What is stereo?




There are now two system of high fidelity, monophonic (monaural) and stereophonic. Monophonic is a system that starts from one microphone and is fed through a single high fidelity set. Stereophonic is a double system. Two separate microphones are placed at different sides of the orchestra and two different systems are used to keep the two signals or channels separated. Two separate speakers are used, placed on different sides of you room. Stereo is much like 3-D photography, two slightly different sound reach your ears giving you a new dimension in sound.




H.H. Scott '59





Kenwood KR-9600 receiver

AM/FM Stereo Receiver

The KR-9600 Receiver puts independent power supplies behind each channel, so demanding musical passages in one channel won't cause distortion in the other. At 160 watts per channel minimum RMS power at 8 , from 20 to 20,000 Hz, with no more than 0,08% Total Harmonic Distortion. The KR-9600 is the most powerful receiver we have ever made. What's more the KR-9600 is loaded with special features. A mid-range presence control, MIC mixing and source fading a deviation meter for source fading, a deviation meter for perfect off-air recording and 2 big power meters, to mention a few.

 


Kenwood's finest KR-9600 incredible power, advanced new circuitry and full complement of controls for unsurpassed performance. Features:

Dual power supplies end crosstalk distortion

Two selectable-range Power meters

Separate equalizer amplifiers for Phono 1 and Phono 2

FM front end couples a dual-gate MOS FET with 5-gang tuning capacitor for the theoretical limit in FM sensitivity (1,5 µV)

Low-distortion, 8-element linear phase IF filter

PLL in FM Multiplex for improved stereo separation

FM Dolby deemphasis switch

Dual function Signal/Deviation Meter

Microphone input for overdub on tape and Public Address

 wo tape deck capability with bi-directional dubbing and tape-through circuit

Triple tone controls with Defeat switch

Optional CB-15 walnut veneer cabinet available

 


Specifications

FM Tuner Section

Usable Sensitivity:  8,7 dBf (1,5 µV)

50 dB Quieting Sensitivity:

Mono :  14,1 dBf (2,8 µV)

Stereo :  36,1 dBf (35 µV)

Signal-to-Noise Ratio

Mono :  75 dB

Stereo :  70 dB

Total Harmonic Distortion

Mono :  0,15%

Stereo :  0,2%

Frequency Response:  20 Hz to 15,000 Hz +0 dB, -1,5 dB

Capture ratio:  1,3 dB

Alternate Channel Selectivity:  83 dB

Spurious Response Ratio:  115 dB

Image Response Ratio:  100 dB

IF Response Ratio (Balanced):  115 dB

AM Suppression Ratio:  60 dB

Stereo Separation:  45 dB at 1,000 Hz ; 35 dB from 50 Hz to 10,000 Hz

Subcarrier Product Ratio:  65 dB

Antenna Impedance

Balanced :  300

Unbalanced :  75

AM Tuner Section

Usable Sensitivity:  10 µV

Signal-to-Noise Ratio:  50 dB

Image Rejection:  70 dB

Selectivity (IHF):  35 dB

IF Rejection:  75 dB

Power Amplifier Section

Power Output (20 to 20,000 Hz with no more than 0,08% T.H.D.):

160 W per channel minimum RMS at 8  

200 W per channel minimum RMS at 4  

Dynamic Power Output:  750 W (at 4 )

Total Harmonic Distortion

0,08% at rated power into 8

0,05% at 1 W power into 8

Intermodulation Distortion (60 Hz : 7 kHz = 4 : 1)

0,08% at rated power into 8

0,05% at 1 W power into 8

Power Bandwidth:  5 Hz to 50,000 Hz

Damping Factor:  55 at 8

Input Sensitivity/Impedance: 1 V/50 k

Speaker Impedance:  4  to 16

Pre Amplifier Section

Input Sensitivity/Impedance

Phono 1 :  2,5 /50 k

Phono 2 :  5,0 mV / 50 k

Aux :  150 mV/50 k

Tape :  150 mV/50 k

Mic :  1,5 mV/50 k

Signal-to-Noise Ratio

Phono 1 :  76 dB

Phono 2 :  80 dB

Aux :  95 dB

Tape :  95 dB

Mic :  65 dB

Maximum Input Level

Phono 1 :  500 mV (RMS) T.H.D. 0,08% at 1,000 Hz

Output Level/Impedance

Tape Rec Pin :  150 mV/100

Tape Rec DIN :  30 mV/80 k

Pre Out :  1 V/5,3 k

Frequency Response;

Phono 1 :  RIAA standard curve +0,2 dB, -0,2 dB

Aux , Tape :  20 Hz to 40,000 Hz +0 dB, -1 dB

Mic :  100 Hz to 8 ,000 Hz +0 dB, -3 dB

Controls

Bass :  ±10 dB at 100 Hz

Mid :  ±10 dB at 800 Hz

Treble :  ±8 dB at 10,000 Hz

Loudness Control (-30 dB): +3 dB at 100 Hz; +6 dB at 100 Hz

Low Filter :  -9 dB at 100 Hz

High Filter :  -9 dB at 10 kHz

General

Power Requirements:  AC 110 - 120 V, 220 - 240 V, 50/60 Hz (switchable)

Power Consumption:  820 W at full power

AC Outlet:  1 Switched, 2 Unswitched

Dimensions (W x H x D):  580 x 169 x 420 mm (22-27/32" x 6-21/32" x 16-17/32")

Weight Net:  24 kg (52,9 lbs)


 

Rotel RX-602 receiver

AM/FM Stereo Receiver

Add a high performance, high-sensitivity tuner to advanced PLL MPX circuitry, then add a high-power, low-distortion power amplifier to all the other RX-602 features, and what does it all add up to. An experience in sound that you'll not only want to have around to set the pace of your living room enjoyment, but one you'll also find hard to resist because the price makes the professional quality so readily accessible.

 

A high-performance, high-sensitivity tuner

For truly fantastic sound enjoyment, the high-performance,, high-sensitivity tuner Rotel engineers for the RX-602 gives you super high sensitivity, excellent rejection characteristics, and distortion  so low it's negligible. For a big boost in selectivity along with fasting reliability, ceramic filters and advanced integrated circuitry go snugly into the FM IF section.

 

The Power Amp

It's high-power, low-distortion all the way. With split power supply and 100% directly coupled OCL circuitry (OCL circuitry has low-noise silicon transistors that give 40W/40W continuous music power into 8 ohms at less than 0,5% T.H.D. both channel driven - or 35W/35W RMS continuous power into 8 ohms at less than 0,5% T.H.D. both channel driven from 20 to 30,000 Hz). If that's not superb output, you tell us what is.

Advanced NF and IC equalizer amp

Advanced because of the advanced electronics - low-distortion , 2-stage directly coupled NF (Negative Feedback) circuitry with high-voltage integrated circuitry achieve genuinely outstanding RIAA characteristics. For terrifically transparent reproduction quality, tone control circuitry also features directly coupled negative feedback circuitry.

 

FM and Audio Muting

FM muting effectively removes inter-station noise during tuning. Audio muting instantly lowers the volume level by -20 dB without disturbing the volume setting when temporary lowering of volume is necessary.

 

Extra-wide Linear FM dial scale and large tuning

The extra width of the linear FM Dial scale results in easy , precise tuning. The size of the vernier scale makes it easy to see. Large tuning meters complement this ease all the more with smooth flywheel action knob that get you right-on to a station quickly.

 

PLL MPX section

Utilization of PLL (Phase Loock Loop) integrated circuitry and other improved circuitry in the MPX section allows for effective stereo esparation and excellent frequency response. Distortion never gets in the way of stereo enjoyment.

 

The performance and the advanced electronics that make RX-602 enjoyment possible are enclosed in a cabinet that stands out in any system; hair-line brushed extruded aluminum front with luxury  metal knobs. Cabinet itself has a beautiful simulated walnut finish. This long, lean look is human-engineered up, down, and all-around to be a great looker and an equally great performer.

 


Specifications

Amplifier Section

Music Power Output (IHF) :  170 W (4 )

Continuous Power Output (RMS, each Channel Driven) :  60 W / 60 W (4 ); 45 W / 45 W (8 )

Continuous Power Output (RMS, both Channels Driven) :  48 W / 48 W (4 ); 40 W / 40 W (8 ); 35 W / 35 W (8 , from 20 to 20,000 Hz at less than 0,5% T.H.D.)

Harmonic Distortion:  less than 0,1% (32 W/32 W RMS)

Intermodulation DIstortion :  less than 0,15% (32 W/32 W RMS)

Power Bandwidth (IHF):  5 to 50,000 Hz (8 )

Frequency Response:  10 to 100,000 Hz ±3 dB

Damping Factor:  40 (8 , 1 kHz)

Input Sensitivity/Impedance:

Main IN :  820 mV/ 33 k

Tape Monitor :  130 mV / 50 k

Aux 1, 2 :  130 mV / 60 k

Phono 1, 2 :  2,5 mV / 60 k

Tape Output Level:  300 mV/ 3 k

Phono Overaload:  130 mV (1 kHz)

Phono Equalization:  RIAA standard ±0,5 dB

Controls

Bass :  ±10 dB at 100 Hz

Treble :  ±10 dB at 10 kHz

Loudness Contour:  ±8 dB/100 Hz +4 dB/10 kHz

Crosstalk:  50 dB / 10 kHz

Hum and Noise (Continuous Power Output)

Phono :  65 dB

Tape :  80 dB, Residual 0,5 mV

Speaker Impedance:  4 to 16 ohms

FM Tuner Section

Frequency Range:  88 to 108 MHz

Sensitivity (IHF):  1,8 microvolts

Signal-to-Noise Ratio :  67 dB

Harmonic Distortion:  0,2%

Selectivity:  70 dB ±400 kHz

Capture Ratio:  1,5 dB

Stereo Separation:  40 dB at 100 Hz, 40 dB at 1 kHz, 35 dB at 10 kHz

IF Rejection:  100 dB

Image Rejection:  80 dB

Spurious Response Rejection:  100 dB

SCA Suppression:  70 dB

AM Suppression:  55 dB

AM Tuner Section

Frequency Range:  525 to 1650 kHz

Sensitivity:  20 microvolts

Selectivity:  30 dB

IF Rejection:  50 dB

Image Rejection:  50 dB

General

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

Power Consumption:  200  max

Dimensions (W x D x H):  22-1/2" x 13" x 5-3/8"

Weight:  10 kg (22 lbs)


 

Rotel RX-402 receiver

AM/FM Stereo Receiver

The RX-402, if the spirit moves you toward something special. It'll take you there.

You can't beat the big quality advantages the RX-402 AM/FM Stereo Receiver adds to Rotel's existing line-up of performance equipment. It's versatile for sure, you can add it confidently to an existing stereo system, or you can use it for starters and build a living room system around it. Whichever, it's been engineered throughout to take you in the direction of something very special, which we'd like to call a solidly satisfying world of stereo, this is what stereo should be-and this the way we've mixed and matched all the advanced electronics in the RX-402 so it comes out that way.

 


High Performance Sound- Oriented Tuner

We don't mean shallow words when we say high performance sound-oriented tuner. We mean things more substantial like an FM FET front end for outstanding sensitivity with very low distortion and excellent rejection characteristics. We mean ceramic filters and integrated circuitry in the FM IF section for stability and selectivity. We mean the things that mean high performance.

Extra Wide Linear FM Dial Scale

The extra width of the linear FM dial scale is that something extra that's standard on all Rotel receivers. It makes for easy, precise tuning on the easy-to-see vernier scale.

Large Dual Function Tuning Meter and Large Tuning Knob

Clear indication of signal strength, and center tuning make for exacting accuracy, and so does the smooth flywheel action of the over-size tuning knob.

Advanced PLL-MPX for Improved Stereo Separation

Stereo separation isn't an abstract term created to confuse you. It's something very real, and you've got to compare the good with the bad to really get your teeth into it. Rotel makes it good , with PLL integrated circuitry and other improved circuitry in the MPX section. And in addition to effective separation over a wide frequency range, this circuitry also means excellent frequency response with distortion so low it's negligible.

 

High-power low-distortion power amp

The RX-402 gives you a split power supply and all directly coupled OCL circuitry with low-noise silicon transistors used throuhout for superb output; 20 W / 20 W RMS continuous power into 8 ohms at less than 0,5% T.H.D. both channels driven from 20 Hz to 30 kHz.

Electronic Protection Circuit

This is automatic resettable protection circuitry that protects your speaker system from overload. It's also protection for electronic components in DC circuits.

 


Specifications

Amplifier Section

Music Power Output (IHF) :  110 W (4 )

Continuous Power Output (RMS, each Channel Driven) :  36 W / 36 W (4 ); 28 W / 28 W (8 )

Continuous Power Output (RMS, both Channels Driven) :  26 W / 26 W (4 ); 24 W / 24 W (8 ); 20 W / 20 W (8 , from 20 to 20,000 Hz at less than 0,5% T.H.D.)

Harmonic Distortion:  less than 0,15% (18 W/18 W RMS)

Intermodulation DIstortion :  less than 0,2% (18 W/18 W RMS)

Power Bandwidth (IHF):  5 to 50,000 Hz (8 )

Frequency Response:  10 to 75,000 Hz ±3 dB

Damping Factor:  30 (8 , 1 kHz)

Input Sensitivity/Impedance:

Main IN :  580 mV/ 35 k

Tape Monitor :  125 mV / 15 k

Aux :  125 mV / 22 k

Phono :  2 mV / 60 k

Tape Output:  340 mV/ 5 k

Phono Overaload:  85 mV (1 kHz)

Phono Equalization:  RIAA standard ±1 dB

Controls

Bass :  ±10 dB at 100 Hz

Treble :  ±10 dB at 10 kHz

Loudness Contour:  ±8 dB/100 Hz =5 dB/10 kHz

Crosstalk:  50 dB

Hum and Noise (Continuous Power Output)

Phono :  65 dB

Tape :  80 dB, Residual 0,5 mV

Speaker Impedance:  4 to 16 ohms

FM Tuner Section

Frequency Range:  88 to 108 MHz

Sensitivity (IHF):  2,0 microvolts

Signal-to-Noise Ratio :  67 dB

Harmonic Distortion:  0,2%

Selectivity:  70 dB ±400 kHz

Capture Ratio:  2 dB

Stereo Separation:  35 dB at 1 kHz, 30 dB at 10 kHz

IF Rejection:  80 dB

Image Rejection:  60 dB

Spurious response rejection:  70 dB

SCA Suppression:  70 dB

AM Suppression:  55 dB

AM Tuner Section

Frequency Range:  525 to 1650 kHz

Sensitivity:  20 microvolts

Selectivity:  30 dB

IF Rejection:  45 dB

Image Rejection:  50 dB

General

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

Power Consumption:  200 W max

Dimensions (W x D x H):  18-5/8" x 13" x 4-1/2"

Weight:  7 kg (15 lbs)


 

JVC XL-Z1010NT CD player

Compact Disc Player - K2Interface. Revealing possibilities at the source

Changing the digital code on a CD into music requires that a digital-to-analog converter choose 1 of 65,536 possibilities every 1/44,100th of a second.

It's commonly assumed that digital signal is composed of 1's and 0's, each represented by the presence or absence of a square-shaped pulse. But the fact of the matter is, a digital signal contains ripple - a type of distortion that changes the shape of a waveform - and jitter, components that move the timing of a pulse forward or behind.

These "non-Code" components can result in a sound that differs from the intent of the digital source. The K2 interface solves this problem by completely regenerating the digital signal. At the heart of the K2 interface is essentially an ultra-high-speed camera with a shutter speed of 20 nanoseconds (20 billionths of a second). Based on these quick snap-shots, it recreates the digital signal as a perfect square wave.

Providing a perfect signal to the D/A converter allows for accurate reproduction of all the nuances such as sound staging and depth. As a matter of fact, in many ways both frequency range and dynamic range are expended. High frequencies sound clearer. There is a heightened sense of the power in the mid-to-low-frequency range.

Music seems to acquire more depth and width, providing clear images of instruments and voices. Overall, sound is smoother and more natural across the audio spectrum.

Precision D/A Converter System Using Four D/A Units.

The XL-Z1010TN features two D/A converter units for each channel - four in all. There is a 16-bit converter for the most significant bits and a 2-bit converter for the two least significant bits. Since the least significant bits have greatest bearing on the sound quality at low level, JVC uses an elaborate discrete D/A converter system for these bits to ensure higher precision. All four converters operate with 18 bits "full Time" whether the level is high or low. Our "quadruple full-time linear 18-bit combination D/A converter" allows you to enjoy digital sound at its most delicate and dynamic.

 


Specifications

Number of Channels:  Two

Converter:  16-bit

Sampling Frequency:  8-fold oversampling, 352,8 kHz

Outputs :
Analog:  2 V
Digital (Coaxial) : 0,5 Vp-p / 75
 

Frequency Response:  2 Hz - 20 kHz

Total Harmonic Distortion :  0,003%

Dynamic Range:  99 dB

Signal-to-Noise Ratio:  better than 108 dB

Distortion Factor:  0,003% (1 kHz)

Channel Separation:  better than 102 dB (1 kHz

Power Requirements: 220 -240 V 50/60 Hz

Dimensions (W x H x D):  435 x 115 x 375 mm

Weight:  7,4 kg


 

JVC AX-Z1010TN amplifier

Digital Pure-A. New possibilities for class-A

There's no doubt an amplifier operating in class-A mode provides lower distortion and cleaner sound than those in popular class-B or class-AB. Their inefficiency, however, makes class-A amplifiers require elaborate heat sinking, and still the amps waste much of their power in the form of heat. This results in inflated cost and relatively low power output. But to enjoy the dynamic sound of digital programs, you need a lot of power.

How to combine the low-distortion sound of class-A with efficiency and power demended by digital audio?

Enter the Digital Pure-A Type II

JVC has the solution - the Digital Pure-A Type II circuit featured in the Ax-Z1010TN "Digital" Integrated Amplifier. This ingenious design takes the advantage of the fact that digital signals can be stored in memory temporarily without changing their frequency response or phase response.

In the Digital Pure-A Type II, digital signals fed directly from digital equipment are split into two: the main signal and the "prediction" signal.

The main signal is sent to a time base processor where it's stored in memory for a fraction of a second before it goes to the D/A converter. The prediction signal is sent to the bias circuit to optimize bias applied to the power transistors depending on dynamics of the upcoming signal. What you get out of this is low-distortion class-A sound with high efficiency and high power.

The AX-Z1010TN is a "Digital" integrated amplifier incorporating a D/A converter system complete with the K2 interface, 8-times oversampling and quadruple D/A converters.

And the amp features a special design for analog programs too - Opt Super-A, another JVC exclusive combining low distortion and high efficiency.

 


Specifications

Circuitry

Preamplifier:  ICL, MC/MM equalizer with EL-FETs in its initial stage

Power Amplifier: "Digital Pure A Type II", "Dynamic Super-A" with Gm circuit

Output Power

105 watts per channel, min. RMS, both channels driven into 8  from 20 Hz to 20 kHz, with no more than 0,004% Total Harmonic Distortion (USA, Canada)

100 watts per channel, min. RMS, both channels driven into 8  at 1 kHz, with no more than 0,002% Total Harmonic Distortion (Europe, UK, Australia)

100 watts per channel, min. RMS, both channels driven into 8  at 1 kHz, with no more than 0,7% Total Harmonic Distortion DIN  (Europe, UK, Australia)

160 watts 1 kHz, 4 , T.H.D. 0,7% DIN

Total Harmonic Distortion (USA, Canada)

CD IN to SP. OUT :  0,004% (20 Hz - 20 kHz, 8 ) at 100 watts

Phono IN to SP. OUT (Volume -20 dB) :  0,009% (20 Hz - 20 kHz, 8 ) at 100 watts

Total Harmonic Distortion (Europe, UK, Australia)

CD IN to SP. OUT :  0,004% (20 Hz - 20 kHz, 8 ) at 90 watts

Phono IN to SP. OUT (Volume -20 dB) :  0,009% (20 Hz - 20 kHz, 8 ) at 90 watts

Intermodulation DIstortion (USA, Canada)

CD IN to SP. OUT :  0,004% (60 Hz : 7 kHz = 4:1, 8 ) at 100 watts

Intermodulation DIstortion (Europe, UK, Australia)

CD IN to SP. OUT :  0,004% (60 Hz : 7 kHz = 4:1, 8 ) at 90 watts

Power Bandwidth

CD IN to SP OUT :  5 Hz - 60 kHz (IHF, 0,03%, 8  both channels driven)

Frequency Response:  5 Hz - 100 kHz +0 dB -3 dB (8 )

Damping Factor:  200 (1 kHz, 8 )

Input Sensitivity/Impedance

Phono MM :  4 mV/47 k

Phono MC :  300 µV/470

CD, Line1, 2, 3, DAT 1, 2, Tape 1, 2 :  300 mV/30 k

Signal-to-Noise Ratio )'66 IHF/DIN)

Phono MM :  89 dB / 73 dB

Phono MC :  71 dB

CD, Line1, 2, 3, DAT 1, 2, Tape 1, 2 :  112 dB / 73 dB

Signal-to-Noise Ratio )'78 IHF)

Phono MM :  82 dB (Rec Out)

Phono MC :  73 dB (Rec Out)

CD, Line1, 2, 3, DAT 1, 2, Tape 1, 2 :  86 dB / (Speaker Out)

Bass Control:  0 - +5 dB (50 Hz, Master Level -30 dB)

Recording Output

Output Level/Impedance : 

Analog :  300 mV/ 1 k

Digital :  2,0 V/ 1 k

Digital Input/Output

Digital 1 :  -23 - -14 dBm

Digital 2 :  0,5 Vp=p/75

DAT Rec :  0,5 Vp-p/75

DAT Play :  0,5 Vp-p/75

D/A Converter Section

Sampling Frequencies :  32 kHz; 44,1 kHz; 48 kHz (Auto Selection)

Total Harmonic Distortion (1 kHz):  98 dB

Signal-to-Noise Ratio :  107 dB

Equalizer

Phono Overload Capacity

Phono MM :  100 mV (1 kHz, 0,02% T.H.D.)

Phono MC :  7 mV (1 kHz, 0,03%, T.H.D.)

Phono RIAA deviation:  ±0,2 dB (20 Hz - 20 kHz)

Power Requirements:  AC 120 V , 60 Hz (USA) AC 110, 127, 220, 240 V , 50/60 Hz  (Other areas)

Power Consumption:  550 watts/ 720 VA (USA); 400 watts (other areas)

Dimwnsions (W x H x D):  435 x 173 x 459 mm (17-3/16" x 6-13/16" x 18-1/8")

Weight:  16,8 kg (38 lbs)


 

Philips LHH-1000 CD player

Philips Compact Disc Player LHH U00

The Philips Reference Series LHH 1000 is now the standard by which other compact disc players will be measured. Other companies may claim state-of-the-art technology but the world's most particular audiophiles-Philips engineers- have achieved it, designing a technological masterpiece that is as pure and complete as any Mozart sonata.

A limited edition - and in strictly limited quantities the Philips LHH 1000 says much about the people who designed the system and the discerning buyer. It says only the best will do ...only a level of excellence attained after years of dedication to achieving the finest musical reproduction possible.

 

Every component of the Philips LHH 1000 is hand chosen for maximum performance. At the heart of the separate digital-to-analog converter and digital filter are special Select Grade TDA-1541 "AS -1" chips with four times oversampling that realize a startling 15,75 bits of resolution from the 16 bits available in the compact disc format. The highest resolution yet achieved in compact disc. Linearity error and distortion barely register. In fact, ail specifications are where you would expect them to be-at the top of their class.

The separate transport section features the professional quality, broadcast standard Philips CDM-1 mechanism made of die cast aluminum alloy. An extremely accurate single beam laser pickup floats on a Radialinear swinging arm that improves tracking ability and offers faster track-to- track access times. And, of course, the LHH 1000 has the renowned Philips Favorite Track Selection (FTS) system to program your entire CD collection. Connections between the Reference Compact Disc Player System (DAC and transport) can be made with coaxial or optical fiber cable with diamond polished connectors. This ensures 100 percent error free transmission of digital data, resulting in truly lifelike, distortion -free sound. 

 

The utmost thought and care went into every aspect of the LHH 1000. There are no plastic parts anywhere in the chassis assembly. The elegant looks belie durable and rugged construction that is second to none.

A sophisticated Learning Type Universal remote control is capable of learning 150 functions from other remotes. LCD readouts complements the system to provide complete fingertip control of this state-of-the-art CD player.

There is no question: the Philips LHH 1000 has set the gold standard for CD technology. It is the finest compact disc player currently available, for people with no tolerance for imperfection.

 


Specifications

Frequency Response:  20 - 20,000 Hz ±0,1 dB

Phase Linearity:  ±0,2 degrees

Signal-to-Noise Ratio:  better than 101 dB

Dynamic Range:  better than 96 dB

Channel Separation:  better than 100 dB

Total Harmonic Distortion:  less than 0,015% at 1 kHz

Ultrasonic Noise Rejection:  better than 60 dB

Analog Output level:  2 V rms, typical 1 kHz, all bits on

Dimensions (W x H x D)

Transport LHH-1001 :  17-/8" x 4-1/8" x 13-5/8"

D/A Coverter LHH-1002 :  as above

Weight:  62 lbs (combined)

Remote Control :  RC-5 Compatible


 

Philips CD960 CD player

Philips Compact Disc Player CD 960

A signal-to-noise ratio of 100 dB. Dynamic range of96 dB. Channel separation greater than 100 dB. These are just a few of the superb specifications of the Philips CD 960 compact disc player, a player that offers audiophile -quality sound for the most demanding listener. 


 

From its elegant design to the superior chip architecture of the digital-to-analog converter, the CD 960 is truly world class. Philips, the inventor of the compact disc, has been constantly refining CD technology. The specially -selected high -resolution version of the acclaimed TDA 1541-A dual 16 -bit converter chip incorporated into the CD 960 is the culmination of those efforts. Coupled with a digital filter with four times oversampling that effectively eliminates any unwanted ultra -sonic noise, the CD 960 is a compact disc player that will become the center piece of your audio system.


 

Complementing the sophisticated digital engineering is superior analog circuitry including third -order Bessel filters, "Elna Cerafine" ceramic powder capacitors and four separate power supplies to eliminate unwanted interference. And all circuits are mounted on a massive, 4.4 pound non resonant, die-cast alloy chassis. Even the disc transport is die-cast aluminum alloy guaranteeing the single beam, broadcast -quality CDM-1 laser pick-up will track accurately and quickly with fast track access averaging less than one second!

Simple to operate-with a full -function remote-the Philips CD 960 has won accolades from the enthusiast press around the world. The CD 960 is a superior example of the art. of musical engineering, one that could only come from the originator of digital audio.

 


Specifications

Frequency Response:  20 - 20,000 Hz ±0,1 dB

Phase Linearity:  ±0,2 degrees

Signal-to-Noise Ratio:  better than 101 dB

Dynamic Range:  better than 96 dB

Channel Separation:  better than 100 dB

Total Harmonic Distortion:  less than 0,015% at 1 jhz

Ultrasonic Noise Rejection:  better than 60 dB

Analog Output level:  2 V rms, typical 1 kHz, all bits on

Dimensions (W x H x D):  16-3/4" x 4" x 15-1/4"

Weight:  21 lbs


 

Stax CDP Quattro II CD player

Super High Resolution Compact Disc Player

 

Advanced DA conversion and 8-times oversampling/18-bit digital filtering bring to life the full potential of the 44,1 kHz, 16-bit CD format as never before. Its high fidelity and complete lack of coloration or "digital harshness" make this the CD player for analog diehards.

By no mean are all CD players that feature 18-bit processing and 8-times oversampling alike. The Stax technology and know-how that go into the Quattro II mean more polish and overall audio output closer than ever before to the ambience of a live performance.

Terminal facilities like a Direct Out with no analog filter and a buffer-equipped Variable Out represent the absolute state-of-the-art. In digital audio technology.

But more revealing than any discussion of the technical merits of this unit will be a listening test with your favorite CDs played on the Stax Quattro II CD player.

 


Specifications

Frequency Response:  20 - 20,000 Hz

Total Harmonic Distortion

DC - 8 kh :  0,0015%

8 kHz - 20 kHz / 0 dB  :  0,002%

At 1 kHz / -20 dB :  0,015% 

At 1 kHz / -60 dB  :  1,4 % 

Dynamic Range:  104 dB

Signal-to-Noise Ratio :  118 dB

Cross Talk :  -120 dB

Output Voltage:

Fixed Out :  2,2 V

Variable Out :  0 - 2,2 V

Power Supply:  117 V, 50/60 Hz

Dimensions (W x H x D):  440 x 144 x 402 mm

Weight:  10 kg


 

Sugden A28 amplifier

The Sugden A28 once again gives you the unsurpassed quality of pure Class "A"

This is how we regard the Sugden A28 amplifier. Based upon well proven Sugden output circuitry, we now bring you an Amplifier which is second to none in its sound reproducing quality.

Let's start with the input circuitry, accessed via easy to use phono plugs and sockets and selected by four simple push-on, push-off switches. On the disc input not only do we have the facility for an internal plug in Moving Coil Module (the A 28 CTHA) deriving its power from within the Amplifier, but also a brand new "series-shunt" disc Amplifier with precision RIAA equalization and two level gain adjustment. In fac, everything to suit the cartridge of your choice.

Next the Tuner, Auxiliary and Tape inputs. All these three have identical input impedances, allowing a wide range of ancillary equipment to be used without interface problems.

The Tape output signal can, of course be fed from any of the input signals. For those people with 3 head Tape Machines, the Tape button will allow immediate post tape recording/replay through the Amplifier, i.e. Tape Monitor.

 

No tone controls here to marr distortion figures, just volume and balance controls with simple but effective filter circuits for hiss and rumble attenuation. Don't forget the Mono Button. Still essential for much recorded material.

Observe the neat, unfussy and easy to clean case style. Front and rear sections are matt black extrusions, whilst the side and top plates are covered in grey textured "Nextel" paint, giving a very attractive two tone finish.

As to how it sounds, well the specification, amy give you some clue, but we believe you will be delighted at the clear transparent sound.

The very low harmonic distortion of a class "A" Amplifier gives fatigue free listening to please even the most discerning ear. All this and more. Sugden expertise brings you the "S.Q.C" circuitry to give an amazingly compact pure class "A" output stage with up to 35 watts in class "B" allowing all but the most inefficient loudspeakers to be driven. Backed by the Sugden workmanship for life guarantees, we are justifiably proud to present this high quality British product.

 

Features:

20 watts pure Class "A" per channel

Continuous reserve capability of 35 watts per channel

Budget price (top quality sound at a price you can afford)

With additional module, can be used with Moving Coil cartridge

Variable gain disc input

Very low distortion

New precision RIAA equalisation network

Built to Sugdens uncompromising standards

Carries Sugden workmanship "for life" guarantee

 


S.Q.C. is short for Switched quiescent Current

And its development gives new potential to the cless "A" amplifier. We at Sugden have always believed in the class "A" amplifier and , in fact, were the first company in the world to produce the all transistor class "A" amplifier in 1968. it was only the demand for more output power which forced us away from the 12 watt A21 pure class "A" amplifier into the higher power "AB" amplifiers, such as the A48 and the P51 in the majority of casses were music is played through reasonably efficient 8  loudspeakers, the average power used is probably not more that 3 to 4 watts with excursions to higher levels depending upon the dynamic rrange of the recorded material.

Also what is the point of burning off power when it is not required. This then is the philosophy around which the S.Q.C. circuit has evolved. The availability of high speed, low level, switching components enables us to control the "AB" circuit to its very best advantage.

The A28 operates continuously at a quiescent level of 10 watts in Class A, i.e. with a current in the output transistors of about 800 mA. By looking at the incoming signal level, after the potentiometer, we can determine whether the 10 watt output level will be exceeded and should this be the case increase the quiescent current level up to 1,2A or 20 watts. The current will stay at this level for as long as the heavy signal exists and also for a short time afterwards, before reverting back to the lower quiescent level. There is, however, a finite switching time of the S.Q.C. circuit, admittedly it is only about one millionth of a second, but under some very fast transient signal conditions there is just a possibility that if the switch sensing point is set at the same level as the quiescent current level, the Amplifier may slip momentarily into class "B" before reverting back to class "A". This is obviously unacceptable and in order to prevent it, we set the sensing a elactronics to switch at a level of 7 watts allowing a 3 watts reserve, giving time for the output stages to react to the increased demand.

Using this technique we can absolutely guarantee a full 20 watts in class "A" at all times.

The additional overhead level between 20 and 35 watts in class "B" allows for the wide dynamic range of some recorded material and since it is far into the linear range of the devices, there is little increase in distortion right up to 35 watts.

 


Specifications

Disc Input Magnetic

Sensitivity :  Internally Selectable to 1,7 mV or 3,5 mV for 35 watts into 8

Signal-to-Noise Ratio :  better than 65 dB unweighted

Frequency Response:  Equalised to within ±0,5 dB of RIAA characteristics 20 Hz to 20 kHz

Input Impedance:  47 k  in parallel with approx. 50 pF

Overload :  margin better than 35 dB at all frequencies

Moving Coil Amplifier

Provision is made with the A28 to lift the A28-CTHA Moving Coil Amplifier Module.

Inputs sensitivities for this unit are 40 µV, 90 µV, 180 µV depending upon the internal sensitivity switch position in the Module and also in the main Amplifier.

This head amp. Uses a novel input circuitry which obviates the need for impedance matching.

Tuner, Aux, Tape Inputs:

Sensitivity :  100 mV into 180 k  for 35 watts into 8

Tape output

Dependent upon input selected Typically 100 mV from disc Amplifier

Tape Monitor

Allows direct "AB" comparison from Tape Recorder on 3 head Machines

Filters

Low Filter:  is a rumble filter with attenuation of 18 dB /octave below 30 Hz

High Filter :  is a hiss filter with an attenuation of 18 dB/octave above 10 kHz

Mono Button:

Allows the incoming signal to be mixed and applied equally to both channels

Loudspeakers:

The Amplifier is suitable for any 8 to 16  loudspeaker - 4  speakers can be driven with reduced power output.

Connection is via 4 mm "banana" plugs

Headphones

Any headphones of 8  to 2 k  impedance may be operated. Connection is by standard 1/4" stereo jack socket on the front panel. The loudspeakers are automatically muted when headphones are used.

Frequency Response:  20 Hz to 20 kHz ±1 dB referred to 1 kHz

Cross Talk (stereo):  better than -35 dB at all levels

Load Stability:  Unconditional

Damping Factor: better than 35 into 8

Power Output (Both Channel):

20 watts in Class "A" into 8

35 watts in Class "B" into 8

Distortion

Class "A" :  0,04 at 1 kHz (20 watts)

Class "B" :  0,06% at 1 kHz (35 watts)

Power Supplies:  Internally adjustable to 110, 120, 220, 230, and 240 V AC

Mains Supply Frequency:  48 / 60 Hz

Total Power Consumption:  220 watts

Auxiliary Power Output:  a 3 pin IEC socket with mating plug is provided. The output is switched live via the Amplifier power on switch. Max. Load from socket is 250 watts

Power ON Lamp:  indication that the Amplifier is operating is given by a light emitting diode on the front panel adjacent to the power on switch.

Dimensions (W x H x D):  400 x 88 x 267 mm

Weight:  6,5 kg