Avalon PM 1 loudspeakers

Precision Monitor 1

 is a high-efficiency floor-standing reference monitor, designed specifically for generating maximum dynamic contrast and effective sound pressure levels from a compact chassis. Ease of driveability through a non- reactive impedance load presents low powered tube or solid-state electronics with an ideal interface for generating maximum SPL per watt of power applied.

 

Features:

Proprietary Silent Inert Cabinet material/process

Advanced light weight driver diaphragm materials minimize energy storage and    time-domain distortion

Each driver individually tested and matched for optimum performance

Smooth, wide polar response for superlative imaging capabilities

Exceptional impedance characteristic allows for ideal interface with any amplifier

Crossover circuitry is hard-wired with surface-only conductors, eliminating deleterious  sonic effects of printed-circuit boards

Maximum energy transfer from low power amplification

Careful crossover control of all magnetic field interaction

Proprietary magnetics technology increases energy transfer and reduces noise floor

Constrained-mode damping system absorbs cabinet vibrations

Three and one-quarter inch thick front panel supplies acoustically inert wave-launch    platform

Proprietary phase-linear filter and damping networks

Distinctive faceted cabinet design provides optimal polar characteristics

 

Specifications:

Driver Complement:

HF :  1" Neodymium Phase Aligned Tweeter

LF :  2 x 7.5” Nomex Kevlar Composite Cone Woofers

Sensitivity:   93 dB

Impedance:  4  Ohms Nominal

Frequency Response:  28 Hz to 25 kHz

Recommended Amplifier Power:  15 to 200 Watts

Wiring Methods:  Two position Binding Post

Dimensions (H x W x D):  940 x 250 x 430 mm (37" x 10" x 17")

Weight:  25 kg (54 Pounds) each

 

Mission 767 loudspeakers

It has been a long standing dream of many loudspeaker manufactures to design a system large enough to produce the full bandwidth of a music program. Such a system, however, needed to maintain the accuracy, transparency, and imaging precision of a physically smaller transducers. Most attempts to date have been relatively unsuccessful due to the complex parameters involved in the loudspeaker/room interface, and the seemingly contradictory requirements of bandwidth against sheer perceived accuracy of the loudspeaker in its environment.

Mission's engineers were intrigued by this dilemma. Research and development work cantered on drive unit and cabinet technology in order to resolve the conflicting requirements of low distortion and coloration, optimum dispersion characteristics, and high power handling.

 

Mission and Cyrus loudspeakers possess an unusually wide frequency bandwidth capability for their physical sizes. To bring the realism of live music into the home environment, the bandwidth must extend down to 20 Hz. This requirement has become even more relevant with the advent of digital recordings

In addition to the fundamental requirement of being able to physically move more air, Mission's research showed certain phase characteristics should be maintained to reduce the amount of phase distortion and perceived group delay in the listening room environment.

 

The ensure correct low frequency reproduction, it was necessary to use dedicated transducers for frequencies below 80 Hz. As well as obvious limitations in using passive cross-over networks at very low frequencies, no phase or group delay alignment is within engineering parameters in an affordable consumer home system. To eliminate these problems, Mission's engineers have implemented an active Low Frequency Alignment Unit (LFAU).

 

Two 6,5 inch mid-range units utilized in conjunction with the Super Elliptical Impedance Transformed high frequency unit produce the full bandwidth of 80 Hz to 20 kHz. The simple, high quality crossover network allows bi-wiring or bi-amping configurations. The lower two octaves of the frequency range are covered by two 8,25 inch drive units powered by a Cyrus based stereo amplifier and an active filter designed to integrate the low frequency and the mid-range units. This active network was designed to drive the LF units down to their free-air resonance frequency of 18 Hz, while compensating for the inter-driver phase shifts and group time delays. This system realizes a totally phase coherent, minimal group delay low frequency energy propagated in "time" with the full spectrum of the music program.

 

Controls are provided for further adjustment of this system to the particular room environment. These adjustments fine-tune the amplitude and roll-off points of the low frequency signal without upsetting the phase characteristic of the system.

 

The 767 is constructed throughout in 25 mm  MDF. It is visco-elastically damped on all surfaces and braced at strategically sensitive points to produce a cabinet free of any coloration or measurable resonances. Modal analysis technique was utilized to develop a cabinet design with a fast energy dissipation, non-resonant enclosure.

 

The transducers used in the 767 are Mission's state-of-the-art. Drive units utilized in the top of the line Mission and Cyrus loudspeakers. The drive units are placed symmetrically in a vertical array to produce a dispersion characteristic designed to minimize floor and ceiling reflections (these two reflection sources are partly responsible for corruption of stereo imaging), while giving a frequency coherent wide lateral dispersion. This configuration was used successfully in the Argonauts for many years, and more recently in the Cyrus 782 loudspeaker. These drive units were developed through many years of research in materials and electromagnetic technologies, as well as ongoing refinements in construction and close tolerance engineering.

 

Specifications

Frequency Range:  20 Hz to 20 kHz

Frequency Response:  30 Hz - 20 kHz ±1,25 dB

Phase Response:  20 Hz to 20 kHz ±28 degrees

Sensitivity:  91 dB SPL (1 m/2,83 V)

Minimum Impedance:  8 Ω

Recommended Amplifier Power:  25 Watts to 250 Watts per channel

Maximum Sound Pressure Level:  114 dB SPL

Dimensions (H x W x D):  1400 x 270 x 430 mm (55" x 10" x 17")

Finish:  Black Ash, Rosewood, Mahogany, Black Piano finish

Aiwa RC-R300 remote control

Infrared Wireless Remote Control System

Designed as an optional accessory for M-501, M-606, M-505 and M502 mini series, this remote control transmitter/receiver set provides great value in an outboard system. The compact hand-held transmitter from up to 6 meters )approx. 20 feet) away from the main components. It's a surefire way to enjoy the outstanding capability of Aiwa mini systems from the comfort of your easy chair.

Some of the many possible wireless operations:

Function selection (Aux, Tuner, Phono)

Tape monitor On/Off switching

Remote ststion selection, including one-touch tuning of up to 6 preset stations on ST-R50, 10 stations on AX-S50

Cassette deck transport modes (SD-L50, SD-L60)

Up/Down amplifier volume adjustment

Power On/Off switching

-20 dB muting On/off

Turntable start/cut )AP-D50, AP-D60)

 

Tuner controls operations

Because the ST-R50 and AX-S50 utilize an electronic synthesizer tuning system, remote control can be employed to select or change stations by manual Up/Down tuning or by pressing the selector button corresponding to the preset station on the tuner.

Preamplifier control operations

Besides raising and lowering of amplifier volume, the remote transmitter can be used to switch modes from Tuner to Tape, Aux to Phono, etc. Another remote function sure to come in handy at times is the -20 dB muting facility.

Other controls

Cassette deck transport modes and turntable start/cut operation can also be performed. As a useful feature to prevent misoperation of the remote unit ahile the system is making a recording for example, the transmitter unit can be independently switched off.

 

Specifications

Dimensions (W x H x D):  250 x 71 x 253,5 mm (9-7/8" x 2-13/16" x 10")

Weight:  2,3 kg (5,1 lbs)

Aiwa AP-D50 turntable

Direct-Drive Turntable

A completely new concept in hi-fi component design; the world's first automatic front-loading turntable. Whether you're aiming for convenience or performance, the ingenuity of the AP-D50 is hard to beat.

 

Operation

First set the speed and record size. Then after placing the disc on the loading tray, press the Play/Cut button and the disc is loaded into playing position by the motorized mechanism. Another touch of the Play button and the arm is transported over the record and play begins. As a safety device returns the arm to the armrest before permitting the loading tray to come out, the Eject button may be pressed either during play or after play has completed.

 

High performance direct-drive motor

For accurate rotation speed completely free from cogging or other undesirable effects, the AP-D50 employs a 4-phase 8 -pole linear torque motor with a frequency generator type speed detector. This compares the motor rotation speed to a standard rotation frequency and makes needed connections virtually instantaneously. A heavy 1,3 kg aluminum diecast platter contributes to the very low 0,028% (WRMS) wow and flutter, and rumble, another result of improved motor design, is a superb 75 dB (DIN-B).

 

Low resonance concrete resin sheet material

Even if a turntable chassis material has a high degree of resistance to acoustical feedback, its effectiveness can be drastically lowered by overlooking the section of the platter which actually contacts the record itself, the rubber mat. At the AP-D50's turntable sheet is a part of the auto-loading mechanism, Aiwa engineers were able to take advantage of the need for rigidity to develop a new material. This "concrete resin", a formulation of CaCO₃ and glass fiber in a polyester base, is able to offer superior resistance to low frequency resonance, enabling the AP-D50 to absorb larger doses of acoustical feedback with no detrimental effects on tone quality.

 

Adjustable Pitch Control

When singing or playing along with a musical instrument, some variation in playback speed may be desired to raise or lower the record's pitch. The pitch control knobs on the AP-D50 enables the unit's speed to be varied by as much as ±3%. The 4 rows or stroboscopic speed indicators at the platter edge are useful in setting speed to precisely 33 or 45 rpm.

 

Full manual operation

It's difficult to conceive of a turntable which can be operated manually without raising the dust cover, but the AP-D50 can do just that. An arm carrier lever located on the front panel permits manual, positioning or the arm when raise off the record surface. Naturally, hydraulic arm cueing is controllable from the front panel in both manual and auto modes of play.

 

Photoelectric auto return mechanism

Most turntables employ a mechanical device which activates auto return operation by detecting a buildup of stress on the arm; this stress unfortunately has the side effect of increasing distortion. The AP-D50 employs a sophisticated non-contact photoelectric system coupled to the arm's own motor, thus assuring uncompromised high performance.

 

Sensitive J-shaped arm with removable headshell

Designed for accurate tracking in the record groove with minimal tracking error and distortion, the low mass aluminum pipe arm takes a universal headshell for easy cartridge conversion. A high compliance MM cartridge with diamond stylus is included as standard equipment.

 

Repeat operation

With this button pressed in, record play will be repeated continuously until halted manually. An LED indicator has been provided to show that the repeat switch is set to on.

 

Exclusive rec-sync feature

When connected by cable supplied with most Aiwa cassette deck and portable stereo models, disc-to-cassette dubbing will commence automatically with the lowering of the AP-D50's arm on the record. Ask for a demonstration of this convenient feature at your Aiwa dealer's showroom

 

Specifications

Drive System:  FG Direct-drive system

Motors: 

1 x 4-phase 8-pole linear torque DD hall motor

2 x DC motor

Turntable Platter:  Aluminum alloy diecast

Diameter:  300 mm

Weight:  1,3 kg

Moment of Inertia:  220 kg/cm² (with turntable sheet)

Speeds:  33-⅓ and 45 rpm

Wow and Flutter:  0,028% (WRMS)

Signal-to-Noise Ratio:  75 dB (DIN-B)

Tonearm Type:  Static balanced type

Effective Arm Length:  215 mm

Overhang:  15 mm

Usable Cartridge Weight:  3,5 - 8,5 g

Maximum Weight:  18,5 g (with headshell)

Cartridge Type:  Moving magnet type

Frequency Response:  20 - 20,000 Hz

Output Voltage:  2,5 mV

Stylus Pressure:  2,5 g

Dimensions (W x H x D):  450 x 106,5 x 375 mm (17-3/4" x 4-3/16" x 14-13/16")

Weight:  7,2 kg (15,9 lbs)

 

Aiwa SD-L50 cassette deck

 Stereo Cassette Deck

A front-loading model with all the features of full-sized units, the SD-L50 nonetheless is an incredibly compact 25 cm wide by 10,7 cm high, making it one of the most compact cassette decks currently available.

Circuitry and head design have been reinforced to give superb sound quality from the new high performance metal tapes.  IC logic controls with a stroke of just 0,3 mm contribute to the positive feeling of operation, while the dual motor drive transport holds wow and flutter to below 0,04% (WRMS). The deck can also be set to perform automatic rewind/repeat play of one side of a tape up to 8 times or until halted manually. For accurate record level settings, 2 rows of 12 LEDs display peaks in 3 colors from -20 to -2 dB (green), 0 to +4 dB (yellow) and +6 to +10 dB (red)

By adding the optional MT-50 timer, the unit can be set for unattended recording, and in the timer's Tape Time mode, digital countdown display of the time remaining on the tape facilitates recording operations. The RC-R300 remote control system (another recommended optional) can be utilized for operation of all deck transport functions from up to six meters (20 feet) away.

Features:

Dolby noise reduction system

Smooth oil-damped cassette eject

Rec-sync operation with Aiwa turntable

Front panel mic and headphone inputs

Digital tape counter

 

Specifications

Track Type:  4-track, 2-channel

Tape Speed:  4,8 cm/s ±1,5%

Wow and Flutter

DIN 45500 :  less than 0,1%

WRMS :  less than 0,04%

Automatic Stop System:  Full Auto Stop

Automatic Shut-Off Action Time:  3 ±1 s

Pinch Roller Pressure:  350 ±30 g (3,43 ±0,29N)

Take-up Torque:  50 ±10 g-cm (490 ±98 mN-m)

FF and Rewind Torque:  155 ±65 g-cm (1520 ±637 mN-m)

FF and Rewind Time:  90 s (C-60 cassette)

Playback Output:  0,58 ±0,05V (Line, DIN)

Playback Noise: 

Cr02 Dolby NR Off/On :  less than 2,0/1,5 mV

LH Dolby NR Off/On :  less than 2,5 /1,5 mV

Rec/Pb Distortion: 

Metal :  less than 1,1%

CrO₂ :  less than 2,0 %

LH :  less than 1,2%

Rec/Pb SN Ratio (1 kHz, Unweighted, Dolby NR Off/on) :

Metal :  more than 45/45 dB

CrO₂ :  more than 45/47 dB

LH :  more than 42/43 dB

Channel Separation (1 kHz, 0 VU):  more than 35 dB

Crosstalk (1 kHz, 0 VU):  more than 65 dB

Erasing Ratio (400 Hz, 0 VU, +10 dB ):  more than 60 dB

Bias Frequency:  85 kHz

Frequency Response:

Metal :  25 -17,000 Hz

CrO₂ :  25 - 27,000 Hz

LH :  25 - 15,000 Hz

Motor: 

Capstan :  DC Servo Motor

Reel :  Dc Motor

Inputs Sensitivity/Impedance:

Mic :  0,3mV (max.)/200 Ω  - 10 k Ω  suitable)

Line In :  50 mV (max.)/50 k Ω

DIN :  0,1 mV/2,7 k Ω

Outputs Level/Impedance:

Line Out :  0,41V (0 VU)/50 k Ω

DIN :  0,41 V (0VU)/50 k Ω

Phones Output Impedance:  8 Ω

Semiconductors:  11 ICs; 66-69 Transistors; 39-40 Diodes; 29 LED

Power Requirements:  AC 220 V, 50 Hz or AC 240 V 50 Hz

Power Consumption:  18 W

Dimensions (W x H x D):  250 x 105 x 260 mm

Weight:  4,5 kg

Aiwa ST-R50 tuner

 Quartz Synthesizer Tuner

You won't find a tuning knob on the ST-R50, because there's no more tuning capacitor to be rotated. All tuning is performed automatically and electronically by means of an voltage-sensitive varactor diode that employs a PLL quartz synthesizer for extra accuracy. Up to 10 MW, FM and LW stations may be programmed at random into the memory circuit and recalled instantly at the touch of a button. Manual tuning is also possible by holding in the up or down control until the desired station frequency is displayed. For optimum sound quality, a quadrature detector circuit with 6-element ceramic filters having flat group delay characteristics achieves a high sensitivity.

A newly developed IC in the limiter and detector reliability. A PLL IC in the MPX demodulation stage provides stable FM stereo switching unaffected by temperature, humidity or aging. The ST-R50 can also be combined with a couple of Aiwa optionals that make it perhaps the most convenient all-around versatile tuner available. When connected to the optional MT-50 timer unit, two On/Off cycles can be programmed at any time desired, and if the power remains on, preset stations may be changed automatically up to 6 times in a 24 hour period. The RC-R300 wireless remote transmitter/receiver unit (also optional) is capable of performing manual Up/Down tuning or selection of preset stations from up to six meters (20 feet ) away.

Features:

Adjustable synthesizer sensitivity control

3 or 4 digit tuned frequency display

FM muting and Hi-blend switches

5-point LED signal strength indicator

 

Specifications

FM Section

Frequency Range:  87,5 - 108 MHz

Usable Sensitivity:  1,9 µV (10,8 dBf)

50 dB Quieting Sensitivity:

Mono :  4,5 µV (18,2 dBf)

Stereo :  45 µV (38,2 dBf)

Capture Ratio:  1,5 dB

Selectivity:  35 dB (±300 kHz);  65 dB (±400 kHz)

Signal-to-Noise Ratio

Mono :  75 dB

Stereo :  72 dB

Image Rejection Ratio:  80 dB

IF Rejection Ratio:  80 dB

Spurious Rejection Ratio:  90 dB

AM Suppression Ratio:  55 dB

Total Harmonic Distortion

Mono :  0,1% (1 kHz)

Stereo :  0,2% (1 kHz)

Frequency Response: 30 Hz - 15,000 Hz (+0,5 -1,5 dB)

Stereo Separation :  45 dB (1 kHz)

AM Section

Frequency Range:

MW :  525 kHz - 1605 kHz

LW :  150 kHz - 285 kHz

Usable Sensitivity

Bar Antenna:

MW :  250 µV/m

LW :  700 µV/m

External Antenna:

MW :  30 µV

LW :  70 µV/m

Selectivity:  30 dB

Signal-to-Noise Ratio:  50 dB

Image Rejection Ratio:

MW :  45 dB (1,000 kHz)

LW :  40 dB (250 kHz)

IF Rejection Ratio:  35 dB

MW :  1,000 kHz

LW :  250 kHz

Power Source:  240 V 50/60 Hz

Dimensions (W x H x D):  250 x 71 x 280 mm (9-7/8" x 2-13/16" x 11-1/16")

Weight:  2,4 kg (5,3 lbs)

Aiwa SA-C50 pre amp

Stereo Preamplifier

Designed as a capable complement to SA-P50, this preamplifier can boast of adding minimal sound coloration and noise to the original signals.

Low harmonic distortion  - only 0,008% - for Tuner, Aux and Tape In is maintained for Phono as well. Use of a new low noise, low distortion IC and ultra low noise transistors in a differential amplifier configuration has made possible the superb 88 dB Signal-to-Noise Ratio with MM cartridges. RIAA deviation has been held to a close ±0,2 dB (20 - 20,000 Hz) byuse of specially selected polypropylene capacitors and high precision metal film resistor elements.

Moving coil cartridges can be directly connected to the unit without the need for an expensive transformer or head amplifier. Selector button on front panel may be switched to MM or MC, thus permitting quick changeover from one type of cartridge to the other. As connections for two tape deck units (Tape 1, 2) are also provided, in-system dubbing may be performed without changing cable connections. Another important feature is the use of a muting relay circuit which effectively silences On/Off switching during mode selection operation and protects the speakers.

Features:

Low filter with 6 dB/oct (30 Hz ) cut-off

Click-stop tone controls defeatable at center position

-20 dB muting switch

Mode indicator LEDs

Loudness control

 

Specifications

Input Sensitivity/Impedance

Phono MM :  2,5 mV/47 k Ω

Pono MC :  0,25 mV/100 k Ω

Tuner, Aux 1, 2 :  150 mV/47 k Ω

Tape In 1, 2 :  150 mV/47 k Ω

Output Level/Impedance

Tape Out 1, 2 :  150 mV/47 k Ω

Pre Out :  0,9 V/47 k Ω

Total Harmonic Distortion

Tuner, Tape, Aux 1, 2 :  0,008% (20 Hz - 20 kHz)

Phono MM :  0,002% (1 kHz Tape out)

Frequency Response:

Aux, Tape IN :  10 Hz - 100 kHz (+0 -3 dB)

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

Signal-to-Noise Ratio

Phono MM :  88 dB

Phono MC ;  70 dB

Tuner, Tape, Aux 1, 2 :  103 dB

Phono Max. Input

MM:  200 mV (at 1 kHz, T.H.D. 0,1%)

MC :  20 mV (at 1 kHz, T.H.D. 0,1%)

Muting :  -20 dB

Tone Controls:

Bass :  ±10 dB at 50 Hz

Treble :  ±10 dB at 20 kHz

Filter

Low :  30 Hz , 6 dB/oct

Loudness +6 dB (at 100 Hz); +3 dB (at 20 kHz)

Power Requirements:  AC 240 V, 50/60 Hz

Dimensions (W x H x D):  250 x 71 x 257 mm (9-7/8" x 2-13/16" x 10-3/16"

Weight:  2,2 kg (4,9 lbs)

Aiwa SA-P50 power amp

DC Stereo Power Amplifier

A high-efficiency power amplifier capable of unmistakably "full-sized" performance, the SA-P50 puts out a muscular 50 Watts per channel into 8 ohms, form 20 to 20,000 Hz, both channels driven, with no more than 0,03% Total Harmonic Distortion .

Coupling capacitors, a cause of phase distortion in the amplifier's negative feedback loop, have been eliminated. An FET in the first output stage and dual transistors in the second stage combine to form a 2-stage differential configuration having low distortion and superb temperature stability characteristics. Super linear transistors (SLPT) with an ultra high-speed frequency cut-off and ring emitter transistors in the final stage make up a pure complementary SEPP OCL circuit with exciting, low distortion reproduction at any output level. For stable power regulation essential for reproduction of dynamic musical passages, power supply is composed of a high-efficiency toroidal power transformer and two large capacity 15,00 µF electrolytic capacitors. A newly developed IC and relay function to suppress "pop" noises during On/Off switching; the self-resetting protection circuit also protects the power transistors from shorts in the output and speakers are isolated if potentially damaging DC is detected at speaker output terminals.

 

Features:

LED Power On indicator

9-point logarithmic peak power LED indicator (0,1 - 100 Watts)

A/B speaker system selector

Stereo headphone jack

One-touch speaker connection terminals

 

Specifications

Power Output:  50 watts per channel, Min. RMS at 8 Ω , from 20 Hz - 20 kHz, with no more than 0,03% T.H.D.

Total Harmonic Distortion :  0,01% ( 50 W, 8 Ω , 1 kHz)

Intermodulation Distortion:  0,01% (50 W, * Ω , 1 kHz)

Power Bandwidth:  10 Hz - 50 kHz (T.H.D. 0,05%)

Damping Factor:  40 at 1 kHz

Frequency Response:  10 Hz - 100 kHz (-3 dB)

Signal-to-Noise Ratio:  112 dB

Input Sensitivity/Impedance:  800 mV/ 47 k Ω

Output Terminals:

Speaker :  A/B (8 - 16 Ω ); A + B (16 Ω )

Headphone :  1 mW/1W, 8 Ω

Dimensions (W x H x D):  250 x 71 x 247,5 mm (9-7/8" x 2-13/16" x 9-3/4")

Weight:  5,4 kg (11,9 lbs)

 

Pioneer CS-24 speakers

 Versatile Slim Speaker Systems

For reproduction of background music in full fidelity for stereo systems or as tape recorder extension speakers.

Today thinking people are more interested than ever before in improving the conditions in factories and offices as well as at home in order to make life more enjoyable. These people are particularly enthusiastic about improving the "environment with sound" in bustling modern life since hearing is the most sensitive of all human senses.

Key punchers and technicians in offices and factories, for example, tend to become nervous and irritated because of the monotony of their work and also because of the harsh noise around them. Under these uncomfortable conditions, work efficiency is usually low.

Under these circumstances, background music which might be called "environmental music" helps to cope with this annoying situation. Functioning as a "tranquilizer", background music simply referred to as Back Ground Music - helps lessen this stress.

Proving extremely effective, Back Ground Music is now widely used in stores and restaurants as well as offices and factories to create a comfortable mood.

Designed primarily for Back Ground Music reproduction, the Model CS-24 Speaker System features soft, relaxing sound. The CS-24 houses a 20 cm (8-inch) double-cone hi-fi speaker, which might be a little too luxurious for a speaker system of this kind. Therefore, the CS-24 Speaker System can even be used with superb results in a smaller home stereo set or as an extension speaker for a popular tape recorder.

The CS-24 has a handsome appearance with a metal grille on the front panel and a cabinet built of natural wood. It will look particularly charming on the wall of a restaurant, tea room, etc.

 

Specifications

Enclosure Type:  open Back type

Speaker Mounted:  8-inch (20 cm ) dual-cone 2-way

Impedance:  8 Ω

Frequency Response:  70 - 15,000 Hz

Sensitivity:  99 dB/W

Max. Power Input:  10 watts

Dimensions (H x W x D):  270 x 410 x 120 mm (0-5/8" x 16-1/8" x 4-3/4")

Weight:  2,95 kg (7, 5 lbs)

Akai SW 135 loudspeakers

 New improved L.T.P (Linear Travel Piston) edge woofer and midrange for greater linearity and better amplitude

Distortion free 10" woofer with 4-ply wound voice coil for perfect voice coil balance

Midrange employs oversized magnet for good damping characteristics. Mellow tones free from distortion and annoying paper sound

Aluminium ribbon voice coil tweeter for improved paper. Covers 20,000 Hz high frequencies for clear high-pitched sound playback

Tone Selector for Standard or Soft tones

 

Epicure Eleven loudspeakers

The Epicure Eleven, a step closer to reality 

The Epicure Eleven, the ultimate bookshelf speaker, incorporates superior linearity excellent dispersion and nearly perfect system phasing. The Eleven delivers flat, undistorted linear frequency response from 38 to 20,000 Hz.

To achieve concert hall clarity ina compact speaker, the Eleven combines, in a ported system. Epicure's celebrated 1-inch air-spring tweeter and a specially fabricated controlled-excursion 6-inch low mass woofer. The tweeter provides unparalleled power response in the mid and upper ranges. In fact above 1800 Hz, nothing in the industry is capable of finer performance.

The key to the Eleven's overall superior sound is the unique relationship - a mathematical one, computer-calculated - between its 6-inch woofer and its bass port. It's not difficult to produce superb mid-range power response and dispersion with a driver this size. But to achieve those qualities in a compact speaker, and at the same time reproduce the earthshoking tones of the lowest bass frequencies, has never before been accomplished.

The sophisticated engineering design of the Eleven works in this way. From its crossover frequency at 1800 Hz to as low as 100 Hz, the Eleven's 6-inch woofer produces dynamic sound and dispersion by itself. Below 100 Hz and continuing through to as low as 38 Hz, the bass port - in essence an audio-active tube of air critically aligned within the speaker - serves to augment the power response of the woofer. So that those deep, fundamental tones normally unavailable to a driver this size become available. The total effect is total sound, concert hall realism from a speaker small enough to fit on a bookshelf.

 

The Epicure Eleven Tweeter

Here is a 1-inch, air-spring tweeter unlike any other in the industry.

There's a balanced, low-mass voice coil assembly. Not centered semi-perfectly, but centered perfectly. And not fixed with the usual silicone, but rather with a vastly superior substance, a space-age fluid that no one else in the business uses. The result is lower distortion in the midrange, particularly noticeable in the voices. And the tweeter produces nearly hemispherical dispersion across most of the audible range.

The Epicure Eleven Woofer

The Epicure Eleven has a specially fabricated controlled-excursion 6-inch low-mass woofer. Its low-vacuum deposit cone is light and stiff.

The woofer often remarkable openness and dispersion. The result is a smoother, more accurate bass without the usual resonance and hooviness of the low notes. This woofer makes it possible to really hear individual bass instruments not just "bass".

Specifications

Frequency Response:  38 to 20,000 Hz ±3 dB

Recommended RMS Power Range:  15 to 80

Dispersion:  Nearly Hemispherical (180 degrees) from all radiating planes.

Crossover Frequency:  1800 Hz, minimum distortion air-cone chake in a two element 12 dB/octave passive crossover

Phase Response:  Drivers geometrically positioned for minimum phase error at crossover.

Drivers:

High-frequency :  1" air spring transducer

Low-frequency :  6" controlled-excursion low frequency transducer

Resonance:  36 Hz, 3 dB down at resonance point

Impedance:  8 Ω

Tweeter Level Control:  Rheastat

Inputs:  Pushbutton terminals

Finish: Hand rubber walnut veneer

Grille:  Dark brown. Acoustically transparent cloth on removeable front panel assembly

Dimensions (W x H x D):  9-1/2 " x 13-1/2" x 21-1/2"

Weight:  36 lbs

Dahlquist M903 loudspeakers

 Dahlquist offers a series of audiophile-quality loudspeaker systems at modest price, making Dahlquist performance available to many more music lovers.

Speaker systems confined to enclosures have essentially been compromises. The designer has had to juggle the speaker's ability to handle the music's dynamics with the equally desirable, qualities of smooth, linear, low-coloration frequency response. Sadly, the latter usually requires a considerable sacrifice of dynamic range.

The Dahlquist Solution

The 'M Series" ends the need for compromise. Originally designed for the stringent demands of recording and broadcast studios, new techniques now make it possible to offer several models for home use. In the Dahlquist tradition, the M Series solves many of the problems that still plague other speaker systems. The Dahlquist M Series loudspeakers are the first fully enclosed systems to reproduce all the of the subtle, quiet details of the music in the midst of extremely loud musical in the midst of extremely loud musical passages. The reproduction of these dynamic shadings makes music come startlingly alive.

 

The Dahlquist M903

The M903 is remarkable compact loudspeaker system. Alone with the other members of the M-Series, it has the Dahlquist Un-Box enclosure and critically matched loudspeaker drivers. The M903's high efficiency and wide dynamic  range let even modestly-powered receivers and amplifiers deliver the startling impact of the newest digital Compact Discs. Yet, unlike many other compact speaker systems, the M903 doesn't sound small. far from it. The key to such remarkable performance is balance. By critically matching the key elements-loudspeaker drivers, crossover network, and enclosure - Dahlquist has achieved a rare combination of small size and superbly balanced sound.

The M903 shares its startlingly precise stereo imaging with the other loudspeakers in the M Series. It's wide, three-dimensional soundstage and stable, precise placements of the musical instruments from side-to-side and front-to-back help to draw the listener into the music.

One of the hallmarks of Dahlquist loudspeakers is the coherency of the total sound. The M903's two drivers blend together seamlessly. As a result, harmonic relationships are accurately preserved. Individual instruments, and especially the human voice, retain their own distinct characters.

As do all Dahlquist loudspeaker systems, the M903 incorporates an advanced and remarkable anti-diffraction technique which enhances accurate stereo imaging and greatly contributes to open, spacious, and accurate sound reproduction.