ReVox B791 (1981) | Linatrack

 

Revox introduced it's original Linatrack (Linear tracking/Tangential tonearm) model, the B790 in 1977. The B791 presented here is the updated version that was introduced in 1981. The pivoting REVOX tonearm concept with the tangential short tonearm represents a successful synthesis of technical innovation and constructive perfection. Damage to the record and scanning system as well as strength and resonance problems of conventional tubular tonearms are a thing of the past with this design. An electronically controlled tracking system keeps the pickup exactly in the middle of the record groove so that no playback distortion occurs. The flat motor developed and built by REVOX is quartz-controlled and drives the turntable directly. This ensures the synchronous consistency absolutely necessary for distortion-free playback without the need for readjustment, even when using record cleaning devices. The digitally displayed rotation speed of the turntable on the B791 can be quartz-controlled by ± 9.9% in steps of 0.1%. The sound variations that can be achieved in this way enable record lovers to create an extraordinarily nuanced playback and adapt it to their individual musical sensibilities. In addition, there is also the possibility of tuning the pitch to a musical instrument or audio-visual device in the simplest way possible.

Technical data:

Motor: Quartz Direct Drive

Speed accuracy: +/-0,01%

Platter diameter 313mm, weight 2,1kg

Tonearm: Linatrack with servo-electronic tracking

Dimensions (WxHxD): 449x142x395mm

Weight: 9,1kg

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PIONEER RT-701 (1976)

 

Pioneer's open reel deck, the RT-701 was introduced in 1976. In addition to improving sound quality, the design is made to be compatible with the amplifiers and tuners that are the core of the component system, and it can be mounted in an EIA standard rack. It features a unique design, and is equipped with a direct drive system in which the motor shaft itself acts as a capstan, a newly developed hard permalloy head, and other features that have been thoroughly improved in terms of performance and sound quality. The RT-701 uses hard permalloy material for the recording and playback heads. The surface is precisely polished to a mirror finish, so it changes little over time even with long-term use and maintains excellent recording and playback characteristics. The head amplifier also uses an equalizer amplifier that uses a newly developed IC with high input resistance and low noise. The RT-701 is a high quality 4-track 2-channel stereo recorder that can operate at two speeds: 19cm/s and 9,5cm/s. Original sale price was 1.480 DM in Germany. There was also a RT-701S without the rack mounting front panel ears. Later this model was upgraded as the RT-707, an auto-reverse model. Frequency response 20-28.000Hz (19cm/s) | Wow and Flutter: 0,05% (WRMS) | 3-motor Direct Drive system | Size (WxHxD) 480x230x356mm | Weight: 19,5kg

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PHILIPS F9434 (1983) | Dynamic Response Control

 

The F9434 was introduced by Philips in 1983. Following the trends of the moment this loudspeaker uses flat membrane speakers. These are still cone-type drive units but the cone is coupled to a rigid plane mounted perpendicular to the drive coil. The membrane is coupled to the cone at its nodal radius (the point of zero displacement under any resonant condition) and this ensures that the entire surface of the membrane responds uniformly to the drive at all frequencies and amplitudes. For extended bass performance the F9434 also utilizez a DRM - Dynamic Bass Processor. This passive membrane works in phase with the active woofer and covers the low frequency range between 30 and 100Hz. For brilliant transient reproduction and high power handling the tweeter is a Isophase tweeter. This is a wafer-thin Capton membrane (10x thinner than a human hair) in which the voice coil is incorporated. Power rating is 80 W Nominal/140W Music power | Frequency response: 30-40.000Hz | Impedance 8ohm | Size: 740x270x290mm | Weight: 14,8kg.

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Sansui CR-M7 (1983)

 

In terms of features and performance, the Sansui CR-M7 cassette receiver is an extremely affordable solution. The CR-M7 offers a logic-controlled cassette deck with touch-key operation, AMPS for quickly finding up to three pieces of music in both tape directions and Dolby noise reduction. The device is completed by a digital quartz PLL tuner with fixed station tuning for 5 FM and 5 MW stations. The frequency response of the cassette deck is 30-16.000Hz Metal tape while the amplifier delivers a power of 25W/ch. Size (WxHxD) 440x110x329mm | Weight 7,5kg. Original sale price: 1498 DM in Germany. 

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Sansui S-XV1000 (1984) | Cinema Surround

 

The S-XV1000 is designed to totally integrate audio and video systems. It connects, and dubs between, three video components, creates surround or theater effects for video programs, simulates stereo from mono programs, corrects color, and has many more amazing and useful functions. Connections for 3 VCRs with dubbing from VCR-A to B, B to A and C to A/B. Remote control for switching 3 video programs and 4 audio programs, recalling FM/AM presets and adjusting volume. Surround sound with THEATER and QS SURROUND. DC-servo amp with 80 watts per channel for front; a second amp with 8 watts per channel for surround. "Multidimension" for simulated stereo. Joystick color corrector for white-balance compensation or special effects. Random presets for 16 FM and AM stations. RF converter (NTSC) for connection with conventional TV. Independent audio/video faders for tape editing. Audio/video processor terminals for video processor, graphic equalizer, etc. Subharmonic synthesizer for rich bass. Dimensions (WxHxD) 430x133x421mm | Weight 9,8kg

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AKAI GX-F95 (1981) | Auto Computer Tuning

 

Using Akai's unique technologies such as Super-GX 3-head and Quartz Lock 2 Motor DD system (BLM-100) the GX-F95 was introduced as the top model in 1981. The Super-GX head of the GX-F95 is using a separate recording head (4 μ gap) and separate reproducing head (1 μ gap). For the capstan drive, a high-grade original brushless quartz-lock DD motor is used. Strong torque and excellent rotational accuracy are realized by a three phase full-wave drive system with Hall element position detection and FG servo + quartz-lock circuit with high accuracy and quick response.

In addition, in order to stabilize high rotational accuracy, it is equipped with a quartz lock, which is phase control by crystal oscillation, and it is combined with a direct drive mechanism to maintain high accuracy. The recording  amplifier uses a DC amplifier to minimize distortion during recording, and the playback amplifier uses a dual FET. The GX-F95 is also equipped with an auto-tuning computer that has been developed to extract 100% of the characteristics of various tapes and to record and reproduce them under optimum conditions. A microcomputer analyzes the characteristics of each tape and commands the deck for the optimum bias, equalizer and recording sensitivity. Further there is a electronic digital tape counter, illuminated buttons and 2-color 24-segment FL bar meter with peak hold. The peak hold time is approximately one second, and a VU / peak switching switch is installed. Two types of cassette lids are included. In addition to the aluminum type, there is also an acrylic type that allows the tape to be seen. The GX-F95 was available in both silver and black at an original sale price of 2.400 DM in Germany.

Technical Data:

Motors: 2-motor Direct Drive Quartz control capstan

Heads: 3-head Super-GX

Wow & Flutter: 0,028%

Frequency response: 20-21.000 Hz Metal

Size (WxHxD): 440x164x364 mm

Weight: 12,5kg

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DIATONE VS-100F (1986) | Visual Sound

 

The VS-100F was developed by Diatone for home theaters with a focus on the mid-range area where dialogue and instrument sounds are concentrated. The VS-100F is equipped with a 30cm cone  woofer on the back for ultra-low frequencies. On the front there are two 20 cm cone woofers for the low range and four 10 cm cone midrange woofers for the middle range. In addition, two 5-cm cone tweeters are installed in the high range. This is a magnetically shielded bass reflex construction. It was initially available only in black but later a wood grain version was added. The DK-100 speaker stand was sold separately.

Specifications:

4-way, 9-speaker, bass reflex

30cm bass x 1

20cm bass x 2

10cm midrange x 4

5cm tweeter x 2

Impedance 6ohm

Frequency range 30Hz to 25kHz

SPL 94dB/W/m

Max input 350W

Dimensions: 400x998x390mm

Weight 47kg

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AKAI FD-7 (1983) | Compo Fusion F7

 

The Akai Compo Fusion 1983. Latest technology and excellent sound quality with a stylish design and with many details that make operation even more pleasant and easier. For example, the front panel integrated and removable infrared remote control, with which all functions can be controlled from the comfort of your armchair. The top model in the Compo-Fusion series from Akai consists of the cassette receiver FD-7 and the fully automatic, direct-drive record player FP-7. Both are connected via a plug connection and can be fully controlled via infrared remote control. The cassette receiver FD-7, with its 2 x 45 watt sinus output power (IHF, 8 ohms, 20-20,000 Hz), is also suitable for larger rooms. The volume, balance and sound are controlled via electronic touch buttons, and the settings are easy to read on the large FLD display panel. You can also easily save your favorite station to one of the 10 station memories. In addition to the quick-reverse technology of the cassette recorder it also offers a music search function that helps you quickly find specific music tracks. It is also equipped with automatic tape type selection, the Dolby-C noise reduction system and a complex timer, to name just a few important details. The FP-7 record player (separate unit) extends at the touch of a button. The vibration-damping roller construction is not only very quiet when extending, it also suppresses annoying resonances. After pressing the phono button, the record player returns to the "rest position" and begins playing. The automatic record size detection make operating the FP-7 even easier. It was available in two versions, one with green-ish and one with blue-ish display, both in silver with some minor differences. 

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McIntosh C33/MC2255 (1982) | The Best Art of Technology

 

Preamplifier Specifications:

2 Phono Input

5-band equalizer

High, Low filter

3 Tape Monitor

2x20W Monitor amplifier (C33)

Size 40,64x13,81x38,10cm

Weight 18kg

Power Amplifier Specifications:

Stereo Output 250W/ch

Mono Operation 500W

Total Harmonic Distortion 0.02%

Output load impedance 1,2,4,8 Ohm

Size 40,64x18,10x36,80cm

Weight 50kg

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BOSE AMS-1 II (2001) | American Sound

 

BOSE AMS-1 II (2001) | American Sound

The AMS-1 II is comprised of a stereo receiver, a CD player, two satellite speakers, one subwoofer, and a system remote control. The speakers are the company's 2.1ch speaker set "AM-5III". It is equipped with a unique "PAP circuit" that realizes the optimal frequency balance according to the volume. It is said to "eliminate the lack of bass at low volumes." In addition, it adopts RAC (Room Acoustic Compensator) that combines tone control and balance control functions, and can perform correction and adjustment according to the viewing situation. The maximum output of the amplifier section is 35W x 2. Other features include a dimmer function that automatically dims the display when the sleep timer is activated, and a resume function that resumes playback from the beginning of the song that was previously being played when playing a CD. The speaker system is composed of small satellite speakers measuring 78 x 104 x 157 mm (width x depth x height) and a subwoofer (Acustimass bass module). "Despite its compact size, it has high sensitivity and excellent low-frequency reproduction capabilities. The "MDA-12" is an add-on MD deck that is unified in design and size with the AMS-1II. When combined with the AMS-1II, it allows for fully synchronized recording and interlocking power ON/OFF. Basic operations can also be performed with the AMS-1II system remote control. It also supports MDLP. The unit is equipped with a jog dial that can be used for song selection and text input. Program playback, random playback, repeat playback, and direct song selection are possible. Also, the recording level can be adjusted not only during analog recording, but also during digital recording.

Technical specification:

Speaker system:

 Sattelite speakers - 100W, 60mm driver

 Acoustimass subwoofer 2x130mm driver

Stereo Receiver (RA-12)

 Power - 35W+35W (1khz, 1% 6ohm)

 FM radio - 76-90MHz

 Size - 230x82x273mm (WxHxD)

CD Player (CDA-12)

 Size - 230x82x256mm (WxHxD)

Mini Disc (MDA-12)

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FISHER MT-Z1 (1989)

The Fisher MT-Z1 is a high-end turntable with belt drive and separate control unit. It has a subchassis made of cast stone, which rests on four springs on a wooden frame. The drive motor uses a newly developed three-phase brushless FG servo motor. The power supply control section, which is responsible for the rectification and operation of the AC power supply, is designed to be separated from the main body. This suppresses interfering vibrations in the rotation system and the adverse effects of the power supply section on the drive mechanism. The tone arm uses a high-precision gimbal support tone arm. While the MT-Z1 was introduced in 1989 under Sanyo ownership it is actually based on the C.E.C. ST-930 from 1989. Made in Japan of course.

Specifications:

Motor: DC Servo

Drive System: Belt

Wow & Flutter: 0.02%

Platter Diameter: 320mm

Platter Weight: 2.3kg

Tonearm Lenght: 222mm (Straight arm)

Dimensions (WxHxD): 485x350x145

Control Unit (WxHxD): 100x220x85mm

Weight: 9.6+1Kg

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AKAI PA-W09 (1980) | Pulse Locked Power Suply

 

The PA-W09 Stereo Power Amplifier was a unique product in the Akai amplifier range from the early 80s. It was unique in a sense that there was no matching pre-amplifier made for this model. While the "04" and "06" models from this range were presented as pre-amplifier/power amplifier combo, the 09 was mostly shown as an individual component. It was only one Akai brochure from 1981 that suggested the PA-W09 to be used as an upgrade to the visually matching AM-U06 stereo integrated amplifier. The PA-W09 is a dual mono construction with pulse power supply and heat pipe cooling system. The original sale price was approx. 1.750 DM in Germany with the first units delivered starting October 1980.

Technical data

Continuous power: 2x120W RMS FTC 8ohm

Total harmonic distortion: 0.005%

Frequency response: 4-100.000Hz

Dimensions (WxHxD): 440x112x367mm

Weight: 9.1kg

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AKAI GX-F90 (1979) | 3-Head 2-Motor Direct Drive

 

The GX-F90 was the top-of-the-line model introduced in 1979 and it was loaded with features. With the 3-head performance of the Super GX Combo Head, High Current Erase Head to accommodate the newly introduced Metal tape, Instant Program Location System, Dual Process Dolby, two-color fluorescent bar meters (24-segment), tape/source monitoring, fine bias adjustment, mic/line mixing, memory rewind and auto-repeat, just to name a few. The GX-F90 was available in both silver and black at an original sale price of 1.398 DM in Germany.

Technical data

Heads: Super GX (3 Head System)

Motors: FG Servo DC motor for capstan - Direct Drive / DC motor reel drive

Wow & Flutter: 0,03% WRMS

Frequency Response: 25-21.000Hz +/-3dB (20 VU) Metal

Dimensions (WxHxD): 440x105x370mm

Weight: 9,8kg

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ILET 110C (1985) | Stereo 4 All

 

ILET

The "Ilet-110-stereo" reel-to-reel recorder has been produced by the Volzhsky Electromechanical Plant since 1985. The model uses a three-motor solenoid logic controlled tape transport with electronic control and automatic tracking of tape tension and Glass Ferrite heads in a 3-head configuration. So far everything seems normal but there are a couple of unusual features for a model introduced in 1985. On a closer inspection one would notice that this model has also a built-in amplifier (2x15W) and would accept reels up to 22cm (a fairly unusual German DIN standard size). The built-in amplifier was actually a characteristic of Soviet made hi-fi components that allowed a radio or turntable to be connected using the 110C as an amplifier for those external sources. Another unusual thing is that as a consequence of the "centralized economical production" the same model was manufactured in various factories across the country with minor aesthetic differences as: Rostov 105 stereo, Soyuz 110 stereo, Snezhet 110 stereo. Apparently the "original" model was the Rostov 105 Stereo and this was exported with both Cyrillic and English front panel inscription. You can see such an export model Rostov 105 in the 1001 Hi-Fi collection here. Frequency response is 31-22.000Hz at 19cm/s with a wow and flutter figure of 0,09%. Size of the unit is 510x417x225mm with a weight of 24kg. Usually a pair of 3-way loudspeakers were offered as standard. 

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