17 October 2021

Technics RS-1800 (U-76) (1978) - Professional in Every Sense of the Word

reel to reel

After the introduction of the initial 3 "Isolated Loop" models (RS-1500/1506/1700) Technics decided to create the Ultimate Isolated Loop model, this was the RS-1800 (U-76 in Japan). With this new model Technics added a new tape speed - 76 cm/s (30 ips). The RS-1800 has 3-speed operation capability: 76 cm/s. 38 cm/s and 19 cm/s and can be used for 2-track recording/playback and for 4-track playback. The faster tape speed is also beneficial from the point of view of tape transport stability: wow and flutter of less than 0.010% WRMS (0.02% DIN) and tape speed deviation of less than +/-0.08% at 76 cm/s. Such high performance specifications as these are, quite naturally, supported by the 3-motor Direct Drive system used since the RS-1500, a Quartz-Locked capstan motor and dual reel motors with a tape tension control system. The RS-1800 also features pitch control with quartz-locked accuracy at all setting that are Digitally displayed by LED's, together with, at the same time, rated speed setting. The same display will also show elapsed tape transport time indicated in hours, minutes and seconds. The "Auto-Play" function is especially convenient to playback a master tape, which is usually wound up when it "tails out". In order to obtain the maximum potential from the extended high-frequency response of the 76 cm/s tape speed, the 2-track recording head, the 2-track playback head and the 4-track playback head of the RS-1800 use the SX (Sendust Extra) type of head. 

The RS-1800 is a two box unit where the upper section contains the tape transport while the lower box is the amplifier unit. The unique feature of the amplifier unit, and the most practical feature as well, is this capability for automatic adjustment of bias and equalization. If the bias/equalization selector is set to "auto" position during tape movement in recording mode, the LED lamp illuminates in red, a 1 kHz test tone is generated and the automatic adjustment of the bias begins. After about 15 seconds the equalization is then automatically adjusted, and the lamp flickers during this period. When both of these adjustments have been completed, the color of the LED will change to green. This setting will be retained in the memory, even if the power is turned off, until the selector is set to the "manual" position. An oscillator is also provided separately for manual adjustments which can be made in 4 steps. The playback equalizer is adjusted to conform to NAB standards, but there is also a 2-position selector on the rear panel of the transport unit for IEC standards. Technical specifications: Wow and flutter: 0.01% WRMS at 76 cm/s | Frequency response: 30-35.000 Hz (+/-3 dB 76 cm/s) - 30-30.000 Hz (38 cm/s) - 30-25.000 Hz (19 cm/s) | Signal-to-noise ratio 62 db at 76 cm/s | Transport: 500x443x347 mm / 36kg | Amplifier: 500x223x389 / 16.6kg. | Original sale Price: 15.000 DM in Germany, 950.000 Yen in Japan. (Optional RP-070 infrared remot control.)

reel to reel

reel to reel

reel to reel

reel to reel

reel to reel

reel to reel

reel to reel

reel to reel
Technics 10000 Series




10 October 2021

Bang & Olufsen Beocord 9000 (1982) - World's Most Advanced Cassette Deck

cassette deck

To hear music reproduced accurately on cassette in your home is one pleasure serious listeners have always been denied until the introduction of the Beocord 9000 in 1982. With the Bang & Olufsen Beocord 9000 you can faithfully reproduce the wide dynamic range of a live performance. So much that it's impossible to pick the difference between the record and recording. The Beodord 9000 incorporates a unique Computer Controlled Calibration system, the Bang & Olufsen HX Professional Recording System and single touch operation. The Beocord 9000 calibrates to any cassette before recording in just nine seconds. Bang & Olufsen have developed a Computer Controlled Calibration system which optimises the performance of any tape. Simply insert any tape and the Beocord 9000 proceeds to set the appropiate bias, sensitivity and equalisation. The specifications for types of tape you use frequently can beplaced in the memory and recalled instantly making future calibration unnecessary. And that's not all, in the calibration process the Beocord 9000 also measures distortion and sets its record level meters according to the characteristics of the particular tape you are using, assuring you of a recording free of audible distortion. 

The Beocord is one of the first cassette decks in the world to incorporate HX Professional. Not since the invention of Dolby NR has such a significant inprovement in cassette performance taken place. Even Dolby Laboratories agreed. Overall dynamic range is increased by up to 10dB. Definition of bass frequencies is audibly superior. Frequency response with any tape is +/-1.5dB from 20 to 20000Hz with a S/N ratio up to 80dB with Dolby C NR!. The Beocord 9000 provides an electronically accurate real-time index to all tape locations regardless of type or lenght. To calibrate any cassette to a real-time index, simply press the GO button on the control panel. The most important part of the system is the micro-computer. The micro-computer carries out all calculations and controls the minute and second readings on the display. The computer program contains 3 tables, one for tape thickness compiled on the basis of practical experience. (Large number of cassettes on the market have been carefully measured at the Bang & Olufsen laboratory to ensure accurate time indication). If that's not enough, the Beocord 9000 is furnished with a specially recorded test tape which permits you to verify the accuracy of the tape head's azimuth adjustment. The fabulous design belongs to Jakob Jensen. Technical data: Wow and flutter: 0.045% WRMS | Frequency range: 20-20,000 Hz +/-1.5dB (All Quality Types), Metal 10-25,000 Hz +/-3dB | Dimensions: 53x13x30cm | Weight: 7.8 kg

cassette deck

cassette deck

cassette deck

cassette deck

cassette deck

cassette deck

02 October 2021

TEAC R-999X (1984) - The Super Analog Reverse Master

cassette deck

The R-999X introduced by TEAC in 1984 is a cassette deck format which achieves the convenience of auto reverse without compromising recording and playback quality. The challenge was in finding a way to maintain close-to-identical recording and playback performance in both directions, for both sides of the tape. After exhaustive research and development the unique Acculign Rotating Head System was developped, a system as different from ordinary rotating types as night is from day. Using Teac's own Cobalt Amorphous (CA) Rec/Play heads along with source/tape monitoring in the three-head configuration on a diecast base, the rotating head assembly with ceramic stoppers is mounted on an exteremely precise dual micro-bearing. This high-precision system maintains almost perfectly identical performance in either tape direction. 

In the interest of the best possible mechanical performance the R-999X features a 6-motor mechanism in a Bi-Directional Symmetrical Transport. This auto-reverse model uses two FG servo-controlled brushless DC direct-drive (DD) capstan motors with heavy flywheel for unfailing speed accuracy in either direction. It also uses two tension servo-controlled corelss DC direct-drive (DD) motors for reel tension servo control, and two motors for support functions. TEAC's Manual Calibration System offers considerable level and bias adjustment flexibility, a real advantage to those seeking optimum recording quality. The R-999X is provided with independent controls and a test-tone generator for exact adjustment of bias and level (sensitivity) for both left and right channels. A 4-bit microprocessor-operated CPS (Computomatic Program Search) system is responsible for various memory, search and repeat functions. The R-999X is equipped with double dbx and Dolby B/C noise reduction systems but it also features dbx disc decoding as well (for dbx encoded vinyl records). Technical data: Wow and flutter: 0.025% (WRMS) | Frequency response (-20 dB): 20-22,000/21,000/20,000 Hz (Metal/chrome/normal) | Dimensions: 432x119x350 mm | Weight: 8.5 kg.

cassette deck

cassette deck

cassette deck

cassette deck

cassette deck

cassette deck

cassette deck

cassette deck


25 September 2021

JBL - Promo Video (1979)

The creative energy of a modern recording session can be intense. Here the art of Music and the science of audio technology meet. The goal is nothing less than the finest in recorded sound. .... click play for more.

18 September 2021

ONKYO Radian 33 (1982) - Multi Listening Compo

mini hifi system

The Radian System was a dramatic departure from previous pre-matched component systems. All components were beautifully matched using rectangular buttons with built-in pictograph indicators to provide a unified image when stacked that clearly shows this system belongs together. Naturally, the Radian System is also carefully matched electronically to assure excellent sonic performance from all program sources. The Radian-33 was among the first to represent the “New Audio” concept with its stylish two-tone design—a departure from conventional component systems at the time. 

The Radian 33 System componets are: PA-33 Integrated amplifier with output power of 30W/ch (8ohm, with no more than 0.08% THD from 40Hz to 20kHz). Volume is controlled by a rocker-type UP/DOWN selector and a preset volume level button instantly sets the volume to the level determined by a separate preset level control. (Dimensions: 330x101x240mm | 5.0kg) - PT-33 Quartz Synthesized Tuner with 6 FM and 6 AM presets. Tuning is done with a rocker-type UP/DOWN tuning selector while watching a digital frequency display. (Dimensions: 330x66x247mm | 2.2kg) - PC-33 Cassette Tape Deck with 3-Motor Computer Controlled System. An extremely stable tape trvel is assured with a wow&flutter of 0.045% WRMS. It is a Metal tape compatible deck (20-17.000 Hz Metal) with manual record level , Dolby noise reduction and an Automatic Music Control System for various track search modes. (Dimensions: 330x101x232mm | 4kg) - PL-33 Linear Tracking Turntable with zinc-diecast cabinet that assure high tracing precision. Direct platter drive reduces wow & flutter to only 0.027% WRMS. The electrically powered dust cover is raised and lowered automatically. (Dimensions: 330x126x338mm | 6.5kg) - Several loudspeakers were offered for this Radian System. These were the styling matched PS-33 2-way speaker system with 16cm woofer and a horn tweeter and the PS-45 with 20cm woofer and a horn tweeter. Later on some markets the better specified SC-301 was also offered as matching loudspeaker. This model features a 21.5cm Deltaolefin woofer and a dome tweeter for a frequency range of 45-30.000Hz. The PE-33 10 frequency band graphic equalizer and the CB-33A, CB-33P and CB-45A dedicated rack were offered as accesories.

mini hifi system

mini hifi system

mini hifi system

mini hifi system

mini hifi system

mini hifi system

mini hifi system

mini hifi system




10 September 2021

Technics SA-007 (1984) - Ultra Compact Hi-Fi System

Ultra Compact Hi-Fi System

This ultra compact system (only 180 mm wide) from Tehnics was introduced in 1984. It consists of the following full metal construction components: SA-007T Quartz Synthesizer tuner with 6 presets, SA-007C stereo control amplifier, SA-007D front loading full logic controlled cassette deck with Dolby and dbx noise reduction and manual recording level setting for normal/chrome/metal tapes, SA-007P 28W/ch stereo power amlifier with peak power meters. Additional components included the SH-007E 12 band graphic equalizer and a small dedicated rack. In 1987 it received a "Haus Industrieform Essen" design award. A rare silver version also existed. 

Ultra Compact Hi-Fi System

Ultra Compact Hi-Fi System

Ultra Compact Hi-Fi System

Ultra Compact Hi-Fi System

Ultra Compact Hi-Fi System



04 September 2021

Aurex PC-4280 (1977) - 3-Head To Go

cassette deck

The Aurex (a Toshiba brand name for Japan) PC-4280 was a compact, portable cassette recorder introduced in 1977. The biggest feature of the PC-4280 is the use of a 3-Head System, a rare feature for a portable deck. This system consists of 3 independent (discrete) heads mounted on a rigid zinc die-cast head block. There is a hyperbolic AS (all-sendust) 1 micron playback head, a ferrite 5 micron recording head and a double gap ferrite erase head which doubles as a tape tensioner. The mechanism is using a high-precision 38 pulse FG servo controlled belt drive mechanism with mechanical tape control. A built-in 6kHz oscillator can be used for record head Azimuth adjustment and a 400Hz oscillator can be used for recording sensitivity adjustment. Settings can be visualized on the VU meters. The deck can be powered within a voltage range of 7-16 V with the help of a built-in DC-DC converter. A clip-on battery box and external 100V AC adapter were also available. Accesories included a shoulder strap and a dust cover that allowed activating the pause function with the lid closed. This portable recorder can be further expanded with the use of the MX-2480 6 channel mixer (microphones and line), the SS-4280W active 10W loudspeaker system or the MA-15 external "adres" noise reduction unit. Technical data: Frequency response: 20-18.000 Hz chrome | Signal to noise: 60dB | Wow and flutter: 0.07% (RMS) | Dimensions: 300x135x85 mm | Weight:  3.4 kg (without batteries) 

cassette deck

cassette deck

cassette deck

cassette deck

cassette deck

cassette deck

cassette deck

cassette deck


28 August 2021

Technics RS-B100 (1983) - The Science of Sound

cassette deck

The RS-B100 cassette recorder from 1983 is a deck that brings together every feature even the most demanding audiophile could desire. The Quartz DD Closed-Loop Double Capstan is an advanced tape transport system designed to maximize speed accuracy and protect tape from outside influences when it is in contact with the heads. There are two capstans, one on either side of the head block. The take-up capstan is an extension of the Technics planar opposed direct drive motor spindle. Employed for the first time in the RS-B100, the innovative Phase Compensation circuitry rectifies high range phase linearity. So you enjoy a dramatic improvement in sound quality. Playback amplifier performance is supplemented by direct coupled construction using dual FETs. Since there are  no coupling capacitors in the signal path, you obtain the full benefits of Phase Compensation circuitry. The RS-B100 has all three of the world's finest noise reduction systems. Equally important, they are all in double circuits so you can enjoy 3-head real-time monitoring with correct NR decoding. dbx provides up to 110dB dynamic range while virtually eliminating noise. An added benefit is the built-in dbx disc decoder for playback of dbx encoded records (vinyl). Dolby C and B noise reduction assure complete compatibility with other decks and prerecorded cassettes. The MPX filter can be switched on to avoid NR mistracking when recording FM broadcasts. 

The RS-B100 features AX (amorphous) combination 3-head system. The noble metal ruthenium (Ru), combined with carefully balanced admixtures, provides higher saturation flux density in the recording head and grater permeability in the playback head. Of course, the wider 2.5 micron recording gap width also contributes to higher MOL while the narrower 0.8 micron playback head gap extends high frequency response. The Technics combination head avoids azimuth adjustment problems since the recording and plyback head gap angles are precisely aligned in a computer controlled manufacturing process. Besides the DD capstan motor, the RS-B100 uses a second, high torque, DC motor for reel drive and one additional motor to move the head block.The RS-B100's advanced metering system uses 18 fluorescent display segments to show the signal level from -40dB to +18dB. This wide range more accurately reflects the higher recording levels possible with dbx. The RS-B100 lets you take advantage of the strong points of particular tapes for specific applications. Left and right channel recording calibration is independent and bias can be adjusted for normal and chrome tapes. As shown in the photo, the meters automatically switch to 1dB-step indication when the test signal (400Hz/12.5kHz) oscillators are used. The 3-way Digital Tape Counter can be switched to show remaining tape time, elapsed rec mute time and a highly accurate 3-digit tape counter. Other features include: music search, output level control, timer capability, black and silver input level knobs included and optional remote control (RP-9645) available. Technical data: Frequency response: Metal 15-25000Hz (20-23000Hz +/-3db), Chrome 15-23000Hz (20-21000Hz +/-3dB), Normal 15-21000Hz (20-19000Hz +/-3dB) | Dynamic range 110dB with dbx | Dimensions: 430x98x273 mm | Weight 5.6kg

cassette deck

cassette deck

cassette deck

cassette deck

cassette deck

cassette deck

cassette deck