Pioneer PL-L33 turntable

Pioneer PL-L33 (L30)

Fully Automatic Linear Tracking Turntable

Features

Tone arm with Pioneer-exclusive Dynamic Resonance Absorber (DRA)

A result of computer vibration analyses, this complex resonator fitted on the arm eliminates resonance-induced vibration, adding clarity to sound.

Linear tracking

Reduces tracking error for better definition and lower distortion

Automatic disc size/speed selector

Record size and speed are automatically chosen by an optical sensor

Touch Controls

Positioned outside dust cover for easy operation

Manual cueing controls

Permit precise cueing of tone arm to any position, left or right

Repeat

For repeat playback of a record up to 8 times

Specifications

Drive System:  Belt-drive

Motor:  DC servo motor

Wow and Flutter :  0,045% (WRMS)

Signal-to-Noise-Ratio:  72 dB (DIN-B)

Dimensions (W x H x D):  16-9/16" x 4-1/4" x 14-3/8"

Weight:  9 lbs 15 oz

 

Philips Spectron SP50 loudspeakers

 High and Mid-Range Continuous Control Rheostats

Acoustical properties vary widely from one listening room to the next. As the acoustical properties Vary, the greatest impact is felt on the mid-range and high frequency responses.

The SP50 may be modified to suit different listening room locations. Two front-mounted continuous control Rheostats allow the treble and mid-range to be increased or decreased from 0 to 3 dB. Highly absorbent acoustical conditions would require the maximum emphasis from both controls. Highly reflective acoustical conditions would require the maximum de-emphasis from both controls.

Furniture Quality Construction

There's more to the SP50's cabinet construction than meets the eye. Like solid 3/4" chipboard core that ends unwanted resonances. And an acoustically transparent jersey cloth grille covering that allows 99% of all sound to flow through, exceeding the performance of any other type of grille covering.

What does meet the eye is equally impressive. Cabinet construction is utterly seamless. The finish is of fine furniture-quality hand-rubbed walnut veneers.  And the dark brown jersey cloth grille covering is strikingly contrasted by the polished aluminum trim.

For sound that fits the finest surroundings , a cabinet to match.

As with the SP40 model, the same technologies have been adopted for:

Rugged Deep Response Woofer

Wide-Dispersion Midrange

Special Acoustically Isolated Tweeter

Specifications

Drivers

Woofer 12" cone-type

Mid-range 2" wide-dispersion dome-type

Tweeter  2 x  1" dome-type

Power Handling Capacity:  70 watts (RMS); 

Impedance :  8 Ω 

Efficiency:  96 dB at 4 watts 1 metre (THD 1.0%)

Frequency Response:  30 - 20,000 Hz

Crossover Frequencies:  500 Hz, 4500 Hz

Crossover Network:  3-way 12 dB/octave parallel type

Fuse Type:  Fast blow protection

Dimensions (H x W x D):  27" x 13-3/8" x 16-1/2"

Weight:  60 lbs

Philips Spectron SP40 loudspeakers

 Philips SP40

Rugged Deep Response Woofer

To meet the specifications for the SP40, Philips engineers were obliged to design a woofer which could meet four rigid acoustic requirements; deep bass response, high efficiency, impeccable fidelity, and rugged durability. The newly designed 10" cone woofer offers all these features.

In any system, a woofer must provide rich, satisfying bass. The Sp40's woofer exceeds even the goals of fine speakers, however, reaching down to 30 Hz for full bottom. With a fundamental resonance frequency of 20 Hz, however, the driver also avoids the hollow, boxy  tones so often found in speakers of this size.

Construction of the cone is from fibre-filled pulp selected for its combination of strength and exceptional resistance to distortion. The driver itself is seated in a new high-compliance suspension.

At the heart of the woofer is Philips patented Feroxdure ferrite magnet and an all-aluminum voice coil. Feroxdure eliminates the need for massive unwieldy magnets which were formely required to create deep bass response. One light-weight Feroxdure magnets provides more strength than orthodox magnet of considerably greater size. At the same time, the aluminum wire-wound voice coil, which minimum mass, offers significantly less resistance to movement than the standard voice coil. And the all-aluminum bobbin radiates heat efficiently, one reason why this driver is so resistant to over-load; even at 60 watts (RMS) of power input, this woofer will stand up to stress.

The efficiency of the SP40 's woofer makes the unit a valuable addition to even moderately=powered system which normally cannot drive acoustic suspension speakers. Because of the new high-compliance suspension, the unit is able to deliver a sound pressure level of a full 96 dB at 1 m with acoustic distortion of less than 1.0% from power input of only 4 watts RMS.

Wide-Dispersion Midrange

The same design features which characterize the SP40's woofer have bean incorporated in the new 2" dome mid-range driver.

The same patented Feroxdure ferrite magnet and the all-aluminum voice coil ensure high efficiency and faithful reproduction along with surprisingly light weight. The power of this new driver is comparable to that of orthodox drivers much larger and heavier.

Normal speaker system force the mid-range driver and woofer to share the same baffle. This design allows interaction between the woofer and mid-range driver which can result in severe distortion. The new Philips mid-range driver is acoustically isolated in its own enclosure. The mid-range driver is capable of operating at full efficiency even outside the speaker cabinet.

Because of the directional nature of mid-range frequencies, the driver has been designed for wide dispersion. The total angle of dispersion is a full 120(o).

Special Acoustically Isolated Tweeter

The same design principles found in the woofer and mid-range driver have been utilized in the design of the new tweeter, a driver which ranks with the world's best.

A 1" dome design, the driver features a 1" copper wire-wound voice coil and the patented Philips Feroxdure magnet. The Feroxdure ferrite magnet packs considerably more power into the same size than orthodox magnets can offer strength means faster response and cleaner sound.

Like the mid-range driver, the tweeter is sealed in its own enclosure, isolating the driver from the woofer which could cause distortion. The tweeter is capable of operating at full efficiency even outside the speaker cabinet.

Specifications

Drivers

Woofer 10" cone-type

Mid-range 2" wide-dispersion dome-type

Tweeter 1" dome-type

Power Handling Capacity:  60 watts (RMS); 100 watts peak power

Impedance :  8 Ω 

Efficiency:  96 dB at 4 watts 1 metre (THD 1.0%)

Frequency Response:  30 - 20,000 Hz

Crossover Frequencies:  500 Hz, 4500 Hz

Crossover Network:  3-way 12 dB/octave parallel type

Fuse Type:  Fast blow protection

Dimensions (H x W x D):  22" x 13" x 10,5"

Weight:  45 lbs

Panasonic SA-5800 receiver

Panasonic SA-5800

From a highly sensitive FM/AM stereo receiver housing powerful direct-coupled ITL-OTL-OCL amplifier and 2-FETs, 1-ics stereo tuner.

Designed to faithfully entertain your ears, you, the discriminating audiophile. This new FM/AM Stereo Receiver highlights all of the exclusive national Panasonic Features: Direct-Coupled ITL-OTL-OCL amplification circuitry and newly developed Differential amplifier circuits reward you with exciting distortion-free audio power. Two highly sensitive 4-pole (MOS) Field Effect Transistors, a Linearly Variable 4-gang FM capacitor, and a costly Monolithic IC in the specially built MPX circuit will gratify your growing need fro selectivity in today's crowded FM world.

Wider frequency response, higher damping factor with lower distortion and noise level, and superb, clear output signal all add up to incomparable stereo enjoyment. The skilfully designed station targeting system, bolstered by highly sensitive tuning circuitry, makes the SA-5800 the most advanced stereo receiver available today. The well-bred child of a close-knit family of electronics wizards, this sensitive instrument effortlessly meets your highest standards.

Powerful 100W Music Power

Lend an Ear & Listen with Care. No sound has ever been so pure and so powerful as that of the SA-5800. These 100 watts of output power are more than sufficient to engulf your whole house in a sea of crystal-pure sound. Whether you want to lose yourself in the driving rhythms of Jazz or the New Rock, or slide into that warm, classical world, let the SA-5800 be your magic Carpet. Its vibrant power will set a crowd swinging to the throbbing beat, or gently soothe the meditative individual.

Reliable, Stable Amplification

Apart from the unique Direct-coupled circuitry, this receiver also features newly developed differential amplifier circuits. No matter how weak the input signal, the amplifier section will magnify it faithfully, in no way impairing its tonal colors. Furthermore, it assures you of rock-stable performance with clean, linear response to all audible frequencies.

Exclusive ITL-OTL-OCL Circuitry

The Tremendous power of the SA-5800 is channelled through a totally new concept in circuit construction. By eliminating the need for the input and output transformers, and the output capacitor, the very source of noise and signal distortion has been eradicated. this new direct-coupled circuitry greatly widens the range of frequency response and  boosts the damping factor to new higher levels. it also reduces the signal distortion to the range of imperceptibility.

Clean Full-Bodied Sound

Even the transistors at the heart of this unique circuitry are totally new. Specially selected high performance transistors have been liberally employed throughout, enabling your to fully perceive the richness and grandeur of any musical sound.

The full complement of tone controls gives you the greatest possible range of Bass and Treble selection allowing you to tailor the sound to your most demanding needs and tastes. The volume control will help you to fill your ears with full concert hall stereo reality

Totally Noise-Free Pre-Amplifier

The SA-5800 offers your ears crisp-clear sound rich, in all the perceptible tonal colors. ALL the thanks go to the extremely low-noise transitory (2SA666) and the honestly built 2-stages PNP-NPN directly coupled equalizer incorporated in the pre-amplifier.

Whatever the strength of the signal you feed into theSA-5800, it will respond faithfully, keeping the amplified signal free from any distortion or noise.

Regulated Power Supply

Have no worries. Be assured that the power output of the SA-5800 as in all National Panasonic's top quality audio in its, is perfectly regulated for reliable sure performance. For producing electrifying Symphonic climaxes, heavy Rock, cool Gypsy violins or soft Mood Music, The power supplied to the different component circuits is maintained at the same stable level allowing precisely balanced stereo reproduction and tonal richness.

Two Highly Selective MOS FETs

The SA-5800 features an entirely new FM frontend design. Completely shielded in a subchassis from distortion producing interference and trouble power hum , it houses two highly selective Field Effect Transistors (4-pole MOS type) in both the first and the second RF stages which are perfectly co-ordinated with a linearly variable 4-gang Tuning Capacitor and 4 tuned circuits. This flawlessly engineered design, assures you of unrivalled sensitivity and peak selectivity for collecting any FM station, near or far.

Stage IF Amplification Circuit

Complementing the highly effective FM frontend, is a specially designed 6-stage IF Amplification Circuit employing 5 Differential Amplifiers and a unique 6-element Ceramic Filter. The highly refined selectivity characteristics offered by this advanced 6-stage IF Circuit are unparalleled by any receiver or tuner of this price range. Alternate Channel Selectivity is as much as 80 dB and capture ratio is far better than 1,5 dB

Noise-Eliminating Muting Switch

The SA-5800 is an absolute joy to operate. You'll find that its performance is as clear and smooth as the cool, distinctive lines of its solid teak cabinet. Its pure tones should never be marred by interstation static shocks, hisses or hums. However, if it happens that such noise does interfere with your listening pleasure, just switch on the Muting Circuit. This feature rids the signal of unwanted noise for uninterrupted musical enjoyment.

Other Features:

Two Tape Monitors,

Efficient Loudness Control,

High Cut-off Filter,

Unique Station Targeting System,

Monolithic IC in the MPX circuit,

Versatile FM Antenna Circuit and Sensitive Ferrite-bar antenna,

Superb Selectivity, and Unmatched Sensitivity of AM sound,

Signal Strength Meter for AM,

Center Tuning meter for FM,

Reverse Automatic Gain Control,

Functional Slide Rule Tuning Panel.

Specifications

Audio Section

Music Power

2 x 50 W at 4 Ω 

2 x 37,5 W at 8 Ω 

RMS Power Each Channel

37 / 37 W At 4 Ω 

27 / 27 W at 8 Ω 

RMS Power Both Channels

27 / 27 W at 4 Ω 

23 / 23 W at 8 Ω 

Total Harmonic Distortion:  0,5% at 40 - 16,000 Hz (rated power, 4 Ω ); 0,5% at 1,000 Hz (Rated power, 4 Ω )

Intermodulation Distortion: 0,7% at 250/8000 Hz =4:1 (Rated power, 4 Ω )

Power Bandwidth:  5 - 40,000 Hz (-3 dB)

Frequency Response:  15 - 85,000 Hz (-3 dB)

Damping Factor:  70 (8 Ω )

Load Impedance:  4 - 16 Ω 

Signal-to-Noise-Ratio  (at rated power)

Phono :  62 dB

Aux :  77 dB

Input Sensitivity

Phono (mag) :  2 mV/ 50 k Ω 

Aux :  180 mV/ 100 k Ω 

Tape Monitor (DIN)

Input :  300 mV/55 k Ω 

Output :  60 mV/70 k Ω 

Tape Monitor (Pin terminal)

Playback :  180 mV/40 k Ω 

Rec Out :  180 mV/750 Ω 

Tone Controls

Bass :  +13 -14 dB at 50 Hz

Treble :  +10 -10 dB at 10,000 Hz

FM Tuner Section

Antenna Terminals:  300 Ω  (balanced); 75 Ω  (unbalanced)

Frequency Range:  88 - 108 MHz

Sensitivity

Antenna 300 Ω   (at ± 40 kHz deviation)

1,8 µV  (s/n 30 dB)

1,6 µV  (s/n 26 dB)

Antenna 75 Ω   (at ± 40 kHz deviation)

1,2 µV  (s/n 30 dB)

1,0 µV  (s/n 26 dB)

Harmonic DIstortion (at ± 40 kHz deviation)

Mono : 0,2%

Stereo :  0,6%

Signal-to-Noise-Ratio  (at ± 40 kHz deviation)

Mono :  64 dB

Stereo :  63 dB

Selectivity:  80 dB  (at 400 kHz)

IF rejection:  100 dB

Image Rejection:  90 dB

AM Suppression:  45 dB

Capture Ratio:  1,5 dB

Leak Carrier:  38 dB (at 19 kHz); 50 dB  (at 38 kHz)

Stereo Separation:  40 dB at 1,000 Hz

Limiting Point (-3 dB):  1,2 µV 

Deemphasis:  50 µsec

Auto Stereo Operation Level:  6 µV 

Bandwidth

IF Amplifier :  400 kHz

FM-Demodulator :  400 kHz

AM Tuner Section

Frequency Range:  525 - 1605 kHz 

Intermediate Frequency (IF):  455 kHz 

Sensitivity:  15 µV 

Selectivity:  30 dB

Image Rejection:  65 dB

IF Rejection:  70 dB

General

Power Supply:  AC 110/120/220/240 V 50/60 Hz

Power Consumption:  230 W

Dimensions (W x H x D):  406 x 140 x 356 mm (16" x 5-1/2" x 14")

 

Sony ST-V7 tuner

 Sony ST-V7 Remote Controlled AM/FM Tuner

Direct Comparator Quartz Synthesis AM/FM Tuner with Supplied Remote Control

Key Selling Feature : Remote Control

Remote control is one convenience feature that makes an appreciable difference. That's why Sony has included a remote commander as a supplied accessory with the ST-V7. The commander controls the 8 station presets on this tuner. But its capability extends far beyond this . When used with the matching TA-V7 amplifier, it controls function, volume, tape monitor, acoustic memory and muting. Add a compatible Sony turntable and cassette deck, and you have a total remote control system.

Key Demonstration

Be certain to display the tuner with the matching TA-V7 amplifier. make sure to point out the benefits of the supplied remote control. If the customer is a novice, you should let him know that the remote control receiver is built-in. Then, use the remote control and the tuner as a stepping stone to sell the TA-V7 amplifier. Point out the matching cosmetics. Raise the volume by remote. Switch from preset station to preset. Then , as the clincher, show the customer how you can recail precise tonal settings with the acoustic memory button.

Technology Features

Quartz Frequency Synthesis - the most accurate , most convenient tuning system

Sony's Exclusive Direct Comparator - provides exceptionally quiet FM reception

Extraordinary FM S/N Ratio - 84 dB in mono, 78 dB in stereo

Buil-in Lithium Battery - to maintains preset station memory.

Convenience Features

Supplied with RM-V70 remote control capable of the following functions:

AMP - function, volume, tape monitor, acoustic memory, muting

TUNER - 8 station presets

TURNTABLE - Cue, start, and stop

CASSETTE DECK - Forward play, reverse play, fast-forward, rewind, stop, pause and Automatic Music Sensor

Microprocessor tuning with manual "step" tuning up and down

8 station memory presents with random assignment of Am and FM stations

Multiprocess memory stores the frequency, mono/stereo mode, and muting condition of each preset station

Memory scan provides a four second sample of each preset station

Fluorescent multi-function display indicates received frequency, muting mode, FM or AM reception

Three-LED signal-strength meter for optimum antenna positioning

Back-panel Beep Tone switch : beep tones indicate remote command has been received

System power switch can turn on entire music system

"Membrane" style feather-touch switches

14" size and cosmetics complement Sony's other V-series components

Back-panel control cables for other compatible "V" series components

Specifications

FM Tuner Section

Usable Sensitivity (Mono)

10,3 dBf/1,8 µV 

50 dB Quieting Sensitivity:

Mono :  16,1 dBf/3,5 µV 

Stereo  :  37,9 dBf/43 µV 

Signal-to-Noise-Ratio: 

Mono :  84 dB

Stereo:  78 dB

Total Harmonic Distortion: 

Mono :  0,08%

Stereo :  0,15%

Intermodulation Distortion

Mono :  0,08%

Stereo :  0,15%

Frequency Response:  30 Hz - 15 kHz +0,5 dB -2,0 dB

Stereo Separation:  50 dB at 1 kHz

Alternate  Channel Selectivity (at 400 Hz) :  80 dB

Capture ratio:  1,0 dB

AM Suppression:  60 dB

Image Rejection:  80 dB

Spurious Response:  100 dB

IF Response:  90 dB

RF Intermodulation (IHF):  74 dB

Muting/Tuning Threshold:  25 dBf

AM Tuner Section

Quieting Sensitivity:

Built-in antenna :  200 µV /m

External antenna :  30 µV /m

Signal-to-Noise-Ratio:   55 dB at 50 mV/m

Total Harmonic Distortion:  0,3% at 50 mV/m; 400 Hz

Selectivity (10 kHz):  38 dB

Image Rejection:  45 dB

General

Output Level/Impedance:  750 mV/4,7 k Ω 

Power Requirements:  AC 120 Volts, 60 Hz

Power Consumption:  17 Watts

Dimensions (W x H x D):  355 x 55 x 270 mm (14" x 2-4/8" x 10-5/8")

Weight:  3 kg (6 lbs 10 oz)

Supplied Accessories:  RM-V70 remote control

NEC A-10 amplifier

NEC A10

The revolutionary Compact Disc places severe demands ion all equipment in the audio chain, particularly the amplifier. In order to reproduce ultra wide dynamic range music from digital sources with maximum accuracy, an amplifier must be able to reproduce high-energy transients at low distortion levels. The NEC A-10 is just such an amplifier, because it was specifically designed for the digital age.

The deficiencies of conventional power supplies.

A conventional amplifier power supply uses a capacitor-input filter" in its rectifier circuit in order to smooth out the current going to each of the amplifier circuits. However, in a common rectifier, the current at the filter output is not as smooth and steady as it should be. Instead, it fluctuates. This occurs because as one filter charges, the other discharges in a seesaw fashion. Extra loud musical passages place a massive current drain on the power supply. If this occurs when the current at the output of the filter is on the decline, the power-supply impedance will increase, which, in turn, causes a clipped waveform at the amplifier's output. the result is distortion.

The NEC Reserve Power Supply - more power for more solid bass.

The NEC Reserve Power Supply utilizes a switching circuit which instantly charges one filter the moment the other filter stops charging and starts discharging. Composite filtered current is much smoother and steadler. This keeps power-supply impedance constantly low, so that clipped waveforms do not occur even under heavily loads. The sound you hear is essentially devoid of distortion at all power levels, with bass sounding rich and powerful even during the loudest passages.

Sophisticated power supply design.

The NEC A-10 has a sophisticated power supply design that uses independent supplies for the phono amps (used with moving coil and moving magnet cartridges), buffer, voltage amp, and current amp. Moreover, to supply the power output stages, the Reserve Power Supply provides a big power reservoir for solid performance. NEC's sophisticated power-supply design assures consistently low distortion and solid, powerful bass reproduction at all output levels - the reason why the A-10 sounds far more powerful than its power rating suggests.

High-gain head amp for moving-coil cartridges.

The NEC A-10 features a separate, high-quality head amp for moving-coil cartridges to extract all the delicacy and subtlety MC cardridges are renowned for. Its high equivalent input noise of -154 dBV (at 90 µV /10 Ω ) is a good indication of the high caliber of this pre-preamp.

Simple Design

To ensure that the signal path is as simple and straight as possible, no tone control system is included in the A-10. In instances where tone control is needed or desired, NEC recommends that the A-10 be matched with a separate, high-performance graphic equalizer.

Specifications

Power Amplifier Section

Rated Output (both channels driven at 20 Hz - 20 KHz)

120 W + 120 W into 4 Ω 

60 W + 60 W into 8 Ω 

Total Harmonic Distortion:  0,003% or less (at rated output)

Intermodulation Distortion:  0,003% or less (at rated output)

Power bandwidth:  5 - 300 kHz 

Input Sensitivity:  1,23 V

Preamplifier Section

Input Sensitivity/Impedance

Phono MM :  2,5 mV/47 k Ω 

Phono MC-1 :  80 µV /10 Ω 

Phono MC-2 :  250 µV /100 Ω 

Tuner :  150 mV/30 k Ω 

Tape 1, 2 : 150 mV/30 k Ω 

CD :  150 mV/30 k Ω 

Aux :  150 mV/30 k Ω 

Output Level/Impedance 

Rec Out :  150 mV/100 Ω 

Preamp Out :  1,23 V/600 Ω 

Phono Overload Capability:  300 mV (MM)

Signal-to-Noise-Ratio: 

Phono MM :  90 dB (-142 dBV)

Phono MC-1 :  72 dB/90 µV  (-154 dBV)

Phono MC-2 :  83 dB/250 µV  (-154 dBV)

Tuner :  110 dB (-126 dBV)

Tape 1, 2 :  110 dB (-126 dBV)

CD :  110 dB (-126 dBV)

Aux :  110 dB (-126 dBV)

Subsonic Filter:  15 Hz (-3 dB, 6 dB/oct.)

Power Requirements :  100/ 120/ 220/ 240 V AC, 50/60 Hz

Power Consupmtion:  335 W

Dimensions (W x H x D):  430 x 150 x 430 mm

Weight:  20 kg

 

NEC CD-803 cd player

NEC CD-803 Compact Disc Digital Audio Player

The CD-803 is no ordinary CD player, or it is based on NEC's many years of experience in all major areas of electronics and communications engineering - digital, optical, semiconductor laser, electronics, communications and precision machinery. No other CD player manufacturer has the technological background of NEC, the reason why the CD-803 provides unusually good sound quality and reproduction accuracy. Serious audiophiles and audio critics are now discovering what we already know; the CD-803 is the best executed CD player on the market.

What is a Compact Disc Digital Audio System.

Compact Disc Digital Audio is a system whereby an original analog signal is converted into a digital signal - a series of 0's and 1's in the binary code. This information, stored in the form of microscopic pits on a flat disc, is retrived by an optical (laser) beam, and finally converted back into analog form by a digital-to-analog (D/A) converter. The piece of audio equipment that retrives digital information from a CD and converts it into an analog audio signal is a CD player. The CD system offers tremendous advantages over the conventional analog system. For instance, dynamic range and s/n ratio both exceed 90 dB, and channel separation is better than 70 dB across an audio band extending from 5 Hz to 20 kHz. No wonder audiophiles and serious music lovers throughout the world have been awestruck by this new source of ultimate fidelity music.

Ease of operation

The CD-803 enhances ease of operation every bit as much as it improves sound quality. Advanced computer control means that it takes only minutes to learn every operating feature. Simply insert a disc into the front-panel door and touch the Open/Close button. As the door quietly closes, the disc rotates for a few seconds to enter encoded program data into the memory, and then stops. Now, by just touching the feather-touch operating buttons, you are ready to enter the realm of digital sound.

Memory play of up to 99 selections.

Up to 99 selections (tracks) on a disc can be programmed for play in any order. Moreover, by pushing the Repeat button, you can replay programmed selections as many times as you want. The average time it takes to locate  a selection, or access track time, is only three seconds. For your convenience, when you've completed initial programming, you can confirm each programmed selection (its track number and order) on the display by just touching the Memo List button.

Digital-domain technology

A Compact Disc contains a sophisticated error correction signal. By extrapolation, it is possible to reconstruct the original digital pulses accurately in instances where some are unreadable. However, severe dropouts, caused by external noise or damage to the disc, may prove too much for the error correction system. This led NEC to develop a three-stage servo for the disc motor which accurately detects and corrects for dropouts. Faithful reproduction is assured.

Digital-analog interface technology

Digital signals are composites of both left and right channel information in alternating sequence. A switching circuit divides the composite signal  into its left channel and right channel components. For this purpose, NEC developed an electronic switch which allows high-speed switching at a rate 10 times faster than commonly used C-MOS devices or analog switches. This significantly lowers high-frequency distortion. With the NEC electronic switching system, the signal runs in parallel with the Circuit rather than in series (as is the case with other switches(, so signal integrity is maintained.

Analog-domain technology

Once digital signals are converted into analog by the D/A converter, the sampling frequency (44,1 kHz) and its harmonic components must be eliminated completely by a low-pass filter. Commonly used active and passive filters suffer phase-related distortion called group delay, which led NEC to develop the ND (Non-Delay) filter. It reduces group delay at 20 kHz to 1/25 the value of other filter designs and significantly reduces unwanted spurious-frequency response.

Specifications

Player Section

System:  Compact Disc digital audio Player

Pickup:  GaAlSi Semiconductor laser

Sampling Frequency:  44,1 kHz

Quantization 16-bits linear/channel

Channels:  2

Frequency Response:  5 Hz - 20,000 Hz (±0,5 dB)

Dynamic Range:  90 dB or more

Signal-to-Noise-Ratio:  90 dB or more

Total Harmonic Distortion:  0,01% or less (5 - 20,000 Hz)

Channel Separation:  70 dB or more (5 - 20,000 Hz)

Wow and Flutter:  Equal to crystal oscillator accuracy

Output Level

Fixed : 1,5 V, 470 Ω 

Variable :  0 - 1,5 V, 2,5 k Ω 

Program Search Function:  program number or sub-number

Memory Functions:  Random memory access to up to 99 programs

Access Time:  3 sec. average

Power Requirements:  100 /120 /220 /240 V AC, 50/60 Hz

Power Consumption:  58 watts

Dimensions (W x H x D):  430 x 150 x 360 mm

Weight:  12 kg

Disc Section

Playing Time (single-sided, 2-channel):  74 minutes 45 seconds maximum

Scanning Velocity (2-channel):  1,2 - 1,4 m/s

Rotation:  Counterclockwise

Track Pitch:  1,6 µm

Diameter of Disc:  120 mm (4,8 inches)

Thickness of disc: 1,2 mm (0,0048 inch)

Diameter of Center Hole:  15 mm (0,6 inch)

Starting Diameter of program Area:  50 mm (2 inches)

 

KLH Model 331 loudspeakers

 KLH Dedicated Loudspeakers - A new standard in sound and styling

KLH has always had the uncanny ability to make graceful loudspeakers that could reproduce a remarkable amount of sound. This, coupled with an unfailing reputation for quality and hand craftsmanship, is the benchmark of the KLH tradition. With the Dedicated Series of KLH loudspeakers, the company adds further to that tradition by setting a new standard in sound and styling. Each of these five superb loudspeakers borrows freely from KLH's classic technology and are of acoustic suspension design.
The tweeters, midranges and cross-over networks are all vastly improved devices of completely new manufacture that represent the industry's most advanced technology (Indeed, the 4-1/2" midrange used in the Model 353 is considered by most experts as the best cone-type ever made and is usually found in only the most costly loudspeakers.)

Each of the five Dedicated Loudspeakers boasts increased efficiency over previous models - with much brighter sound and greater overall musicality. And each of them regardless of size or price, recreates the subtleties and innervoices of the orchestra demonstrably better than past competitive models. Stated simply, they are easily among the best loudspeakers we, or anybody else, has ever made.
They are also unquestionably, the best value we have ever offered. And since we've always offered one heck of a lot of speaker for the money, that's saying quite a lot. Here then, dedicated to you, is the new KLH Dedicated Series - beautiful loudspeakers for people who really care about what they hear.

KLH Model 331

Frequency Response:  50 Hz - 18 kHz

8 ohm two-way, ported cabinet loudspeaker system

One long excursion 8-inch KLH woofer;

One 2-1/4-inch cone tweeter

Minimum Recommended Power per Channel:  8 watts RMS

Maximum Power Handling (can be safely used with amplifiers rated up to): 75 watts RMS per channel

Wood grained vinyl on high density particle board

Removable front grille panel

Dimensions (H x W x D): 530 x 300 x 220 mm (21" x 12" x 8-3/4")

Weight (Shipping carton):  41 lbs (packed one per carton)

KLH Model 317 loudspeakers

KLH Dedicated Loudspeakers - A new standard in sound and styling

KLH has always had the uncanny ability to make graceful loudspeakers that could reproduce a remarkable amount of sound. This, coupled with an unfailing reputation for quality and hand craftsmanship, is the benchmark of the KLH tradition. With the Dedicated Series of KLH loudspeakers, the company adds further to that tradition by setting a new standard in sound and styling. Each of these five superb loudspeakers borrows freely from KLH's classic technology and are of acoustic suspension design.

The tweeters, midranges and cross-over networks are all vastly improved devices of completely new manufacture that represent the industry's most advanced technology (Indeed, the 4-1/2" midrange used in the Model 353 is considered by most experts as the best cone-type ever made and is usually found in only the most costly loudspeakers.)

Each of the five Dedicated Loudspeakers boasts increased efficiency over previous models - with much brighter sound and greater overall musicality. And each of them regardless of size or price, recreates the subtleties and innervoices of the orchestra demonstrably better than past competitive models. Stated simply, they are easily among the best loudspeakers we, or anybody else, has ever made.

They are also unquestionably, the best value we have ever offered. And since we've always offered one heck of a lot of speaker for the money, that's saying quite a lot. Here then, dedicated to you, is the new KLH Dedicated Series - beautiful loudspeakers for people who really care about what they hear.

KLH Model 317

Frequency Response:  45 Hz - 18 kHz

8 ohm two-way, high-efficiency, acoustic suspension loudspeaker system

One 10-inch KLH woofer;

One 2-1/4-inch cone tweeter

Three-position tweeter control switch - toggle

Minimum Recommended Power per Channel:  10 watts RMS

Maximum Power Handling (can be safely used with amplifiers rated up to): 100 watts RMS per channel

Wood grained vinyl on high density particle board

Removable front grille panel

Dimensions (H x W x D): 580 x 300 x 250 mm (23" x 12" x 9-3/4")

Weight (Shipping carton):  29 lbs (packed one per carton)

 

KLH Model 373 loudspeakers

A new standard in sound and styling

KLH has always had the uncanny ability to make graceful loudspeakers that could reproduce a remarkable amount of sound. This, coupled with an unfailing reputation for quality and hand craftsmanship, is the benchmark of the KLH tradition. With the Dedicated Series of KLH loudspeakers, the company adds further to that tradition by setting a new standard in sound and styling. Each of these five superb loudspeakers borrows freely from KLH's classic technology and (except the Model 331) are of acoustic suspension design.

 KLH Model 373
Frequency Response:  45 Hz - 22 kHz
8 ohm three-way, high-efficiency, acoustic suspension loudspeaker system
One 10-inch KLH woofer;
One 3-7/8-inch midrange;
One 2-1/4-inch cone tweeter
Two-position presence control switch - toggle
Minimum Recommended Power per Channel:  10 watts RMS
Maximum Power Handling (can be safely used with amplifiers rated up to): 150 watts RMS per channel
Wood grained vinyl on high density particle board
Removable front grille panel
Dimensions (H x W x D): 610 x 330 x 250 mm (24" x 13" x 9-5/8")
Weight (Shipping carton):  37 lbs (packed one per carton)

KLH Modell 363 loudspeakers

 KLH Dedicated Loudspeakers - A new standard in sound and styling

KLH has always had the uncanny ability to make graceful loudspeakers that could reproduce a remarkable amount of sound. This, coupled with an unfailing reputation for quality and hand craftsmanship, is the benchmark of the KLH tradition. With the Dedicated Series of KLH loudspeakers, the company adds further to that tradition by setting a new standard in sound and styling. Each of these five superb loudspeakers borrows freely from KLH's classic technology and are of acoustic suspension design.

KLH Model 363

Frequency Response:  30 Hz - 22 kHz

8 ohm three-way acoustic suspension loudspeaker system

One 12-inch KLH woofer;

One 5-inch midrange;

One 2-1/4-inch cone tweeter

Two rotary switches - one 2-position midrange control and one 3-position tweeter control

Minimum Recommended Power per Channel:  12 watts RMS

Maximum Power Handling (can be safely used with amplifiers rated up to): 150 watts RMS per channel

Wood grained vinyl on high density particle board

Removable front grille panel

Dimensions (H x W x D): 610 x 330 x 320 mm (24" x 13" x 12-5/8")

Weight (Shipping carton):  46 lbs (packed one per carton)

KLH Model 353 loudspeakers

KLH Dedicated Loudspeakers - A new standard in sound and styling

KLH Model 353

Frequency Response:  25 Hz - 22 kHz

8 ohm three-way acoustic suspension loudspeaker system

One very low resonance,

12-inch KLH woofer;

One 4-1/2-inch midrange;

One 2-1/4-inch cone tweeter

Two rotary switches - one 3-position midrange control and one 3-position tweeter control

Minimum Recommended Power per Channel:  25 watts RMS

Maximum Power Handling (can be safely used with amplifiers rated up to): 175 watts RMS per channel

Wood grained vinyl on high density particle board

Removable front grille panel

Dimensions (H x W x D): 660 x 360 x 320 mm (26" x 14" x 12-5/8")

Weight (Shipping carton):  49 lbs (packed one per carton)

 

Spectro Acoustics 101B preamplifier

Spectro Acoustics Model 101B

Preamplifier/Equalizer

The quality of a stereo component system lies in the audiophil's choice of equipment. The major influence affecting that quality is the interaction and influence of each component on other components and the culmination of those influences on the human ear. This is where the choice is made in selecting "quality" and whether to accept a particular sound as "right"

All things considered, the perfect listening environment is still the concert hall and reproduction of music must remain subjective. However, we want control over what we hear and have the facility to change what it is that reaches our ears. In musical reproduction this function is relegated to the concepts of tonal compensation, balance and volume. The equipment corollary is the modern preamplifier; a device which offers control over the amount of sound reaching our ears and which particular source we will listen to, (whether it be a tape recording, a phonograph record or a radio broadcast). In most cases, there is the ability to change the tonal content at specifically designated frequencies.

Spectro Acoustics, in attempting to obtain maximum performance value, offers the Model 101B preamplifier/equalizer for audiophiles who want the most in flexibility and performance at a reasonable price.

The Spectro Acoustic Model 101B  in order to optimize reliability and serviceability, is designed and constructed to utilize plug-together glass-epoxy circuit boards and 100% monolithic IC circuitry for consistent performance. All controls and connections are human engineered to give simple straight forward operation. The graphic panel of the 101B is a display of exactly what's going on inside of the unit. Control is at the user's finger tips to seek the level and range of sound that achieves personal satisfaction.

The equalizer circuit for the Model 101B is a totally new type based on Spectro Acoustics gyrator synthesis techniques similar to those used in the Model 210 Graphic Equalizer. The design is a hybrid coil/gyrator type which totally eliminates distortion and hum for equalizer circuitry. The filter parameters are optimized for maximum flexibility from a five band design and as an added benefit the highest and lowest frequency bands are "shelving" type to control the response well beyond are "shelving" type to control the response well beyond the extremes of audibility. The usefulness of the equalizer circuitry is further enhanced through its complete availability to line or tape outputs, or total bypass for equalization in/out comparisons.

In phono stage, the Model 101B utilizes an isolated feedback servo op-amp phono stage with ultra-accurate adherence to the RIAA curve. This circuit provides for accurate cartridge response, increased definition of high frequencies and greater dynamic range. Internally accessible cartridge loading components can be adjusted by any qualified and authorized technician to perfectly match the cartridge load for any cartridge.

Specifications

Total Harmonic Distortion:  less than .05% at 2 volts rms output, 20Hz to 10kHz, 10 k Ω  load

Intermodulation Distortion; less than .01% at any output level below clipping, 7kHz and 60 Hz mixed 1 to 4 (SMPTE)

Noise

Phono Stage:  less than 2 mV equivalent input noise, 20Hz to 20kHz, inputs open or shorted (S/N ratio = at least 74 dB below 10 mV reference) Better than 88 dB below full output (ASA standard "A" weighting)

High Level & EQ Stages:  less than 30 mV equivalent input noise, 20Hz to 20kHz, inputs open or shorted (S/N ratio = at least 90 dB below 1 V reference) Better than 100 dB below full output (ASA standard "A" weighting)

Frequency Response: 

Phono Stage : within 0,5 dB of true RIAA equalization, 20Hz to 20kHz, typically within 0,1 dB

High Level Inputs : within 0,1 dB of absolutely flat response, 20Hz to 20kHz, within 3 dB of absolutely flat response, 5Hz to 100kHz

Gain

Phono Stage :  40 dB at 1 kHz, phono stage alone, 50 dB at 1 kHz, phono +line amplifier (main outputs)

High Level Stage :  10 dB with Level controls set to maximum

Equalizer Stage :  Plus or minus 15 dB nominal range of adjustment, within 0,1 dB of unity gain, controls set flat

Dynamic Range

Phono Stage : Overload point is 100 mV at 1 kHz input

High Level Stage :  Overload point is 10 V at 1 khz into 10 k Ω  load

Port Impedances

Phono Units :  47 k Ω  shunted by 220 pF (internally adjustable)

High Level Inputs :  50 k Ω  shunted by 10 pF

Tape Inputs less than 600 Ω , resistive, direct coupled

Main Output :  less than 600 Ω , resistive, direct coupled

Output Capabilities

Rated Output:  2 volts rms into 10 k Ω  load, resistive

Output at Clipping :  Greater than 9 volts rms into 10 k Ω  load, greater than 5 volts rms into 600 Ω  load at 1 kHz

Protection:  Fully protected against short circuits at any output level

Power Requirements:  110 to 125 VAC, 50/60 Hz, 14 watts (Standard unit); 220 to 250 VAC, 50/60 Hz, 14 watts (Export unit)

Physical Data

Dimensions (W x H x D):  381 x 152,4 x 140 mm (15" x 6" x 5-1/2")

Optional Wood Cabinet (W x H x D):  412,8 x 184,2 x 421,3 mm

Weight :  10 pounds shipping

 

Kenwood LS-406 loudspeakers

 Kenwood LS-series

Speaker Systems Way Ahead of Their Time

Introducing the most advanced development in speaker design and technology, with extended dynamic range, well-dispersed sound distribution and well-defined, solid bass.

Featuring:

The Kenwood Daphne Diaphragm, "perfect" diaphragm material for clean, clear sound.

Lumber-Core Baffle Board, to cut vibration and produce distinct, rich sound without distortion.

Bass-Reflex Design, mathematically calculated to deliver optimum bass response.

Low-Frequency Driver, carefully designed for well-defined, solid bass.

Linear Diaphragm Suspension, to keep bass resonance low and permit clean reproduction of the lowest frequencies

High-Frequency Driver, with dome-shaped diaphragm and well-designed dimensional relationships for exceptional presence.

Specifications LS-406

Drivers

Woofer:  10"

Tweeter: 1" dome

Frequency Response:  48 Hz to 20,000 Hz ±5 dB

System Resonance or Tuning:  36 Hz

Nominal/Minimum Impedance:  8 Ω  / 7,1 Ω 

SPL for less than 2% Harmonic Distortion:  103 dB

Typical Distortion Maximum (at any Frequency Above 100 Hz at 100 dB SPL):  1,0%

Average Acoustic Output at 2,73 V (1W/1m):  90 dB

Crossover Type:  LC

Acoustical Crossover Frequency:  3,500 Hz

Electrical Crossover Frequency:  2,000 Hz

Controls:  3 Position

Input Power to produce 90 dB SPL per 1000 Cubic Feet of Room Volume : 1,2

Dimensions (W x H x D):  15" x 25-3/4" x 12-1/2"

Weight:  38 lbs

Kenwood LS-405 loudspeakers

Kenwood LS-series

Speaker Systems Way Ahead of Their Time

Introducing the most advanced development in speaker design and technology, with extended dynamic range, well-dispersed sound distribution and well-defined, solid bass.

Featuring:

The Kenwood Daphne Diaphragm, "perfect" diaphragm material for clean, clear sound.

Lumber-Core Baffle Board, to cut vibration and produce distinct, rich sound without distortion.

Bass-Reflex Design, mathematically calculated to deliver optimum bass response.

Low-Frequency Driver, carefully designed for well-defined, solid bass.

Linear Diaphragm Suspension, to keep bass resonance low and permit clean reproduction of the lowest frequencies

High-Frequency Driver, with dome-shaped diaphragm and well-designed dimensional relationships for exceptional presence.

Specifications LS-405

Drivers

Woofer:  10"

Tweeter: 1" dome

Frequency Response:  58 Hz to 20,000 Hz ±5 dB

System Resonance or Tuning:  43 Hz

Nominal/Minimum Impedance:  8 Ω  / 7,1 Ω 

SPL for less than 2% Harmonic Distortion:  103 dB

Typical Distortion Maximum (at any Frequency Above 100 Hz at 100 dB SPL):  1,5%

Average Acoustic Output at 2,73 V (1W/1m):  90 dB

Crossover Type:  LC

Acoustical Crossover Frequency:  3,500 Hz

Electrical Crossover Frequency:  2,000 Hz

Input Power to produce 90 dB SPL per 1000 Cubic Feet of Room Volume : 1,2

Dimensions (W x H x D):  12-3/4" x 23-1/4" x 11"

Weight:  31 lbs

 

Electro-Voice Sentry 100EL monitor

Electro-Voice Sentry 100EL

Professional Powered Monitor System

Near-field monitor for post production and live sound

Wide, uniform coverage

Extremely smooth frequency response

High power handling

High-Performance, built-in, 50-watt amplifier for remote operation

Description

The Electro-Voice Sentry 100EL powered monitor speaker system combines the advantages of the Sentry 100A monitor with a self-contained, high-Performance power amplifier. It is designed with the broadcast/recording studio engineer in mind, although it is well suited for a wide variety of professional applications. The Sentry 100EL offers uniform frequency response and dispersion across a wide range.

A Super-Dome tweeter is employed to faith-fully reproduce program material at high levels, with response out to 18,000 Hz and uniform dispersion (120(O) at 5,000 Hz) The low-frequency section is an 8-inch direct radiator woofer installed in an optimally vented enclosure with fourth-order Butterworth tuning. The optimally vented design is responsible for the unusual combination of small size, extended bass response and high efficiency. Such performance is simply not available in other enclosures of similar size.

The Sentry 100EL is housed in a utility cabinet wrapped in a special scratch-resistant, matte black vinyl. The cabinet size is intentionally designed fro rack mounting. The steel-reinforced grille is covered with a custom gray cloth. This provides maximum protection and a pleasing, aesthetic quality.

The Sentry 100EL may be driven room any line-level signal source. An XLR-type connector is provided for use with balanced sources, while a 1/4-inch phone jack accommodates unbalanced lines. Uses only the appropriate connector; both should not be connected at the same time. Although both inputs are protected against voltage peaks of up to 100 volts, connection from an external power amplifier is redundant and invariably results in increased noise and distortion.

Most importantly, a sharp cutoff, high-pass filter is included which has been precisely tailored to the Sentry 100EL response. It provides a dramatic reduction of energy-wasting, sub-sonic signals in the amplifier and woofer. By controlling low-frequency cone excursion and amplifier power, program material any often be reproduced at higher levels without distortion and without any reduction in acoustic low-frequency response.

A system level control is located on the front of the enclosure which varies the gain of the amplifier from zero over a useful range of more than 30 dB. Additionally, a red indicator lamp shows when AC power is applied to the Sentry 100EL. A replaceable AC power fuse is located on the rear panel of the system. The rating and type are identified beside the fuse holder. Under normal conditions, even with momentary overloads, the fuse will not blow.

Specifications

Frequency Response:  48 to 18,000 Hz (1m on Axis, Anechoic Environment, Swept One-Third-Octave Pink Noise +_3 dB)

Dispersion Angle Included by 6 dB Down Points, 10 Foot Microphone Distance, Anechoic Environment, One-Third Octave Bands Of Pink Noise

Horizontal

250 - 6,300 Hz (158°  ±32° )

8,000 - 20,000 Hz (55°  ±18° )

Vertical

250 - 6,300 Hz (140°  ±40° )

8,000 - 20,000 Hz (52°  ±13° )

Crossover Frequency:  2,000 Hz

Sound Pressure Level(1m, max. gain, 0 dBu into Balanced Input, Anechoic Environment, 300 - 2,000 Hz Average):  108 dB

Dimensions (H x W x D):  438 x 305 x 292 mm (17,25" x 12,0" x 11,5")

Net Weight:  15 kg (33 lb)

Amplifier Section

Continuous Sine Wave Power (6 ohm load, 120 V line):  50 watts

Dynamic Range:  92 dB minimum

Residual Noise (max. Gain, 600 Ω  source, 20 - 20,000 Hz bandwidth):  400 µV max

Power Bandwidth (-3 dB):  30 - 20,000 Hz

Total Harmonic Distortion:  (1,000 Hz, 50 watts): 0,05% typical

Low Frequency Filter

Slope :  12 dB/octave

-3 dB Point :  28 Hz

Balanced Input, Sensitivity (50 watt output):  0,775 V (0 dBu)

Impedance:  30 k Ω 

Maximum Level:  8,0 V (+20 dBu)

Common Mode Rejection:  40 dB minimum

Connector Type:  3-pin XLR-type female

Polarity (for positive sound pressure):  Pin 2 positive

Unbalanced Input, Sensitivity (50 watt output):  0,39 V (-6 dBu)

Impedance:  10 k Ω 

Maximum Level:  30 V (+32 dBU)

Connector Type:  1/4-inch phone jack

Polarity (for positive sound pressure):  Tip positive

Power Requirement

Domestic Model :  120 watts max. 105 - 130 V, 60 Hz

Fuse :  1-1/2 A slo-Bloe, Type 3AG MDL or MDX

Export Model :  210 - 260 V, 50/60 Hz

Fuse :  800 mA slow acting, type FTT

 

Electro-Voice Sentry 100A loudspeakers

ELECTRO-VOICE Sentry 100A

Sentry Studio Monitors, superb standard of audio reproduction

Sentry 100A for tight spaces

Just because your monitor space is limited, you don't have to compromise on sonic accuracy. The Sentry 100A is a compact, no-frills system that's ideal for restricted environments like mobile recording studios. it's the oldest member of the Sentry family and has become the industry standard of reliability.

The Sentry 100A delivers a flat 45 - 18,000 Hz frequency response with wide 120°  dispersion at 5000 Hz. The Super-Dome tweeter handles a remarkable 25 watts of input power and is matched with an 8" direct radiator woofer in an optimally vented enclosure.

The Sentry 100A is designed for efficient set up and operation. With the optional SRB-7 rack mount kit, the monitor can be installed from the front to a standard EIA 19" rack. The front mounted high frequency control allows quick and easy boost and cut adjustment.

Specifications

Frequency Response:  45 - 18,000 Hz ±3 dB

Dispersion Angle (Included by 6 dB Down Points):  

250 - 6,300 Hz :

Horizontal :  158°  ±32° 

Vertical :  140°  ±40° 

5,000 - 20,000 :

Horizontal :  55°  ±18° 

Vertical :  52°  ±13° 

Sound Pressure Level (at 1 m/1 W) :  91 dB

Power Handing Capacity:  30 W

Power Handing Capacity (10 ms above 40 Hz):  300 W