Showing posts with label Reel to Reel. Show all posts
Showing posts with label Reel to Reel. Show all posts

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




14 August 2021

PHILIPS N4520 (1979) - Truly Professional Results

 

reel to reel

King of PHILIPS tape recorders, this is the PHILIPS N4520 reel to reel tape recorder introduced to the market at the end of 1978 begining of 1979. This high quality 3 motor 3 head tape recorder was available both as a 4 track recorder (N4520) and 2 track recorder (N4522) both featuring 38, 19 and 9.5 cm/s tape speeds. The reel drives were using direct drive motors while the capstan drive was using a belt drive PLL Quartz controlled motor. A high precision digital display was used to measure tape length in meter and decimeter. The use of FSX/Ferrite heads and a continuosly variable BIAS made possible to achive high quality recordings with speeds up to 38 cm/s. There is provision for separate microphone/DIN and line level input that can be mixed together while the sound on sound function could be used by home musicians to record their multi instrumental (vocal) recordings. Accurate recording levels can be achieved with the use of two needle type selectable VU/Peak level meters with Peak LED level. For fast winding there is a variable speed control while for headphone output there is a separate headphone amplifier. Technical data for N4520: Frequency response 30-26,000 Hz (38 cm/s) 30-20,000 Hz (19 cm/s) Signal to noise: 64 dB (38/19 cm/s) Dimensions: 530 W x 527 H x 230 D mm Weight: 25 kg.

reel to reel

reel to reel

reel to reel

reel to reel

reel to reel

reel to reel



31 July 2021

Technics RS-1500/1506 (1976) - Professional in Every Sense

 

reel to reel

Both performance and operational advantages of the "Isolated Loop" tape path introduced in the Technics RS-1500US and RS-1506US qualify these professional units not only state-of-the-art, but as the begining of a new technological generation. To realize the full potential possible with this design, there was no choice but to employ an all direct-drive tape transport system, with quartz-controlled, phase-locked servo control. Electronically as well, these units were built as an uncompromising challenge to tape decks now available. Separate microphone amplifier, recording amplifier, mixing amplifier and three-way bias and equalization controls all serve to help assure flawless recording and playback under any circumstances. Unique in tape recorder technology, the capstan of the RS-1500US is 34 mm in diameter, for increased tape contact and less possibility of slippage. 

By means of two pinch rollers in contact with the same capstan, an isolated, closed-loop system is formed. The direct-drive oncept was originally introduced by Technics in 1969, for use in high-grade turntables, and was adopted in the Technics RS-275US cassette deck in 1970. In 1976 with the introduction of the the RS-1500US, direct-drive is applied to a tape transport system (the capstan, flywheel and motor all rotate as a uniform entity) ​The direct-drive principle extends to the reel motors, also. Brushless DC motors of very high torque, with electronic commutation, are unitized with the diecast reel tables. The RS-1500US is designed for 2-track recording and playback as well as 4-track playback of tapes made on other decks. The RS-1506US is designed for 4-track recording and playback as well as 2-track playback of tapes made on other decks. Technical data: Tape speed: 38 cm/s, 19 cm/s, and 9.5 cm/s Frequency response: 30-30,000 Hz (38 cm/s) 20-25,000 Hz (19 cm/s) 20-15,000 Hz (9.5 cm/s) Dimensions 45.6 x 44.6 x 25,8 cm Weight 25 kg.


reel to reel

reel to reel

reel to reel

reel to reel

reel to reel

reel to reel

24 July 2021

FIDELA by Nakamichi - The Origin of Nakamichi

 

reel to reel

Nakamichi was founded by Etsuro Nakamichi in 1948 as Daiichi Onkyo Co. Ltd. which in 1958 became Nakamichi Research Corporation Ltd. and it was later headed by the founder's younger brother Niro Nakamichi. The company specialised in manufacturing portable radios, tonearms, speakers, microphones (Primo Dynamic) and communications equipment but it was only after 1972 that they started using the Nakamichi brand name. 

In 1951 they have developed one of the first open reel tape recorders in Japan under the Magic Tone brand, these were initially sold as a kit. In 1957 they developed and manufactured proprietary magnetic tape heads and started manufacturing reel to reel recorders, for US distribution as OKI 555 (1962), and under the FIDELA brand name. In 1965 they have launched the Fidela 807 3-head Open Reel Stereo Tape Deck, also rebadged as harman/kardon TD-3 and KLH Model 41. They also made one of their first cassette recorders as Fidela NR-11 in 1967. Because of its experience in manufacturing magnetic tape heads and equipment, in 1967 the company started making tape decks for a number of foreign manufacturers including Harman Kardon, KLH, Advent, Fisher, ELAC, Sylvania, Concord, Ampex and Motorola. (Fidela model range: 11, 22, 33, 55, Studio 77, Studio 77D, 300D, 300DS, 720, 780, 807, 860, 920, 960)

reel to reel
Magic Tone (1951) 2-Head | 4.5kg






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Fidela 11 2-Head | 40Hz-15Khz | 6w mono



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Fidela 33 (1964) 2-Head | wow&flutter 0.12% | 30Hz-18kHz | s/n 50dB | 2x3W


reel to reel
OKI 555 / Fidela 55 (1964) 2-Head | wow&flutter 0.12% | 30Hz-18kHz | s/n 50dB | 2x7W

reel to reel
Fidela Studio 77 (1964) 2-Head | wow&flutter 0.12% | 20Hz-22kHz | s/n 50dB | 2x6W

reel to reel
Fidela Studio 300D (1960) 2-Head | wow&flutter 0.15% | 50Hz-15kHz | s/n 50dB

reel to reel
Fidela 720 (1966) 2-Head | wow&flutter 0.15% | 40Hz-18kHz | s/n 50dB

reel to reel
Fidela GemSonic 807 (1965) 3-Head | 3-speed | 30Hz-20kHz | wow&flutter 0.15% | s/n 50dB | 300x150x210 mm | 7kg

reel to reel

reel to reel
Fidela 920 (1967) 4-Head | wow&flutter 0.15% | 40Hz-18kHz | s/n 50dB

cassette deck
Fidela NR-11 (1967)




06 June 2020

Sansui SD-7000 (1973) - Grade Up Your Stereo


Sansui SD-7000

As a result of three years of intensive research and development work and ten prototype models, in 1973 Sansui introduced the SD-7000, the ultimate answer to just what a true high fidelity stereo tape deck should be. A wide dynamic range, wide frequency response range, high signal-to-noise ratio, low distortion and automatic reverse, repeat, rewind and shut-off operations are just af the many outstanding features of the SD-7000. The SD-7000 is a 3-motor, 4-head Auto-Reverse, 4-track 2-channel stereo/mono recorder. Automatic repeat, reverse and rewind operations can be triggered either by fixing strips of sensing foils at the end of a tape or recording the 20Hz reverse signal the deck is equipped with. Unlike other tape recorders where the capstan pulls the tape across the heads and the supply reel provides back tension, the SD-7000 capstan is located before the head assembly and tape tension is provided by the take-up reel. Specifications: Reel size 7" maximum - Tape speed 19cm/s and 9,5cm/s - Heads: Erase, Record, Forward playback, Reverse playback (4-track 2-channel) - Frequency response 15-25,000 Hz @ 19cm/s - S/N ratio Better than 60db - Dimensions: 435 (W) x 535 (H) x 260 (D) mm - Weight: 27 kg.

Sansui SD-7000

Sansui SD-7000

Sansui SD-7000

Sansui SD-7000

Sansui SD-7000

Sansui SD-7000

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18 October 2019

PHILIPS N4450 (1972) - 6 Head 3 Motor 3 Speed

reel to reel

Top of the line reel to reel recorder from the 1972 PHILIPS line-up. This is a 3 motor 3 speed electronically controlled 4 track 2 channel tape recorder that can handle tapes up to 26.5 cm diameter. The recorder is capable of both way recording and playback using 6 heads in a typical 3 head configuration, bothways. The recorder has a built in 20W/ch amplifier, clock/timer for programmed reording in a 24 hour interval, multiplay and echo recording and illuminated tape control keypad. A four digit tape counter with counter adress search system enables quick program finding while the N6719 (sold as accesory) allows remote operation of the tape recorder. Technical data: Frequency response 40-20.000 Hz (19 cm/s) Dimensions 520 (W) x 500 (H) x 210 (D) mm Weight 22 kg.

reel to reel

reel to reel

reel to reel

reel to reel

reel to reel

06 September 2019

Technics RS-1030US (1975) - The Unknown Classic

reel to reel


The Technics RS-1030US was introduced in 1975 as a semi-professional tape recorder. It was situated below the RS-1080U studio recorder in the Technics model range while the RS-715U (a more popular model) was intended for home users. The RS-1030US is a 2-track master recorder running at 38 cm/s speed but is also fitted with a 4-track playback only head for compatibility with tapes recorded at 19 cm/s. The RS-1030 mechanism features a 8/4 poles dual speed hysteresis synchronous motor for belt driven capstan and two 6-pole induction motors for fast winding. Specified frequency response was 30-27,000 Hz (+/- 3 dB, 38 cm/s) while wow & flutter was 0.08 % (38 cm/s). The HPF (high pressure ferrite) heads had a 10 year guaranty offering a 58 dB signal-to-noise ratio at 38 cm/s. The deck could also be operated via the optional RP-9103 wired remote-control.


reel to reel

reel to reel


reel to reel

reel to reel

reel to reel

reel to reel