Tascam 234 Syncaset cassette tape recorder

Syncaset - 4-Channel Multitrack Recorder

The Tascam 234 Syncaset 4-channel Multitrack Recorder is essentially a campact cassette version of 4-track oper-reel recorders/reproducers with a buit-in 4x2 mixer. And as such it offers some of the same features that put our open-reel machines at the top of their class. The 234 Syncaset even offers a few features its bigger brothers don''t have.

Simul-Sync Recording

The 234 Syncaset gives you Simul-Sync recording, for professional mutitrack recording capability. This unique Tascam functions lets you build up rich, complex recordings - you can add one or more tracks as a time, playing all the parts yourself, until you've created exactly the sound you want. Tracks can be "ping-ponged" back and forth, combining them to open up more tracks. In fact, you can record up to 10 separate tracks with each being transferred to a new track no more than once, so there is no degradation in the quality of the final recording.

 

Sophisticated Features

One extremely important features the 234 Syncaset has in common with Tascam open-reel multitrack machines is our unique Record Function and Output Select switching matrix. This time-saving system makes setting up record and sync channel assignments easier and faster than ever. The Record Function switches assign the channel sync or record modes, while the Output Select switches select monitoring of either the input source signals or playback from the sync/repro head. A meter switch selects monitoring of the four track on the four respective meters,, or switches meters 1 and 2 to display the levels on the 234's built-in cue mixer output busses. And a Cue selector selects mono or stereo mixer output modes.

The built-in mixer is something that is unique to the 234 Syncaset. In addition to providing a stereo or mono cue mix with full panning on each channel in the stereo mode, it can be used to actually mix down your multitrack tape to stereo format until you're ready to invest in a separate mixer.

There are even a number of locator functions including zero stop and zero play that can make finding the desired spot for recording, overdubbing or mixdown fast and easy - letting you concentrate on creating rather than button pushing.

 

 

If the 234 Syncaset is combined in the right way with the right peripheral equipment, it can provide extensive versatility and flexibility for creative multitrack recording. A 234 Syncaset and an M-2A 6-in /4-out mixer, for example, form a system that is capable of creating recordings that you would never have thought possible with "cassette Multitrack". And the 234 is ideal for audio-visual production as well as music recording.

In terms of sound quality the 234 Syncaset has been designed to deliver the best possible. It has a top-performance 2-motor transport that ensures superb tape travel stability and optimum tape-to-head contact. The tape passes the heads a 9,5 cm/s - twice the speed of conventional cassette - so you still get frequency response and Signal-to-Noise Ratio that's on a par with some of the finest stereo cassette decks. And, of course, logic control makes operation smooth, sure, silent and safe.

For even better Signal-to-Noise Ratio and exceptionally broad dynamic range reproduction capability the 234 Syncaset has a built-in, switchable dbx noise reduction system. And it has been designed exclusively to provide optimum performance with chrome tape formulations.

The 234 Syncaset will accept just about any source with no need for any other equipment.  Each channel has a line input as well as a phone-jack type microphone input. The microphone inputs have independent trim controls to perfectly match the sensitivity of the respective input for different mikes or even electric guitars and other electric instruments.

A Tascam 234 Syncaset can be used alone, or as the nucleus of a more sophisticated multitrack recording system that is capable of producing some very surprising results.

 

Specifications

Electrical Parts

Mixer Section

Mic/Inst Input (x 4)

Input Impedance:  100 k Ω , unbalanced

Nominal Input Level:  60 dBV (1 mV) to -10 dBV (0,3 V)

Min. Input Level:  -70 dBV (0,3 mV) at TRIM max.

Max. Input Level:  +15 dBV (5,6 V), at TRIM min.

Line IN (x 4)

Input Impedance:  22 k Ω , unbalanced

Nominal Input Level:  -10 dBV (0,3 mV)

Min. Input Level:  -20 dBV (0,1 mV) at Input max.

Max. Input Level:  +15 dBV (5,6 V)

Line Out (x 4)

Output Impedance:  100 Ω

Nominal Load Impedance:  10 k Ω 

Min. Load Impedance:  1,7 k Ω 

Nominal Output Level:  -10 dBV (0,3 V)

Max. Output Level:  +15 dBV (5,6 V)

Cue Out (L, R)

Output Impedance:  100 Ω

Nominal Load Impedance:  10 k Ω 

Min. Load Impedance:  1,7 k Ω 

Nominal Output Level:  -10 dBV (0,3 V) PAN fully L/R

Max. Output Level:  +15 dBV (5,6 V)

Phones Output (stereo)

Nominal Load Impedance:  3 Ω 

Min. Load Impedance:  4 Ω 

Max. Output Level: 100 mW (8 Ω )

Frequency Response:  20 Hz - 20 kHz -0/2 dB

Signal-to-Noise Ratio:

One Mic/Inst in to Line Out

88 dB (TRIM max.) / 82 dB (TRIM min.) IHF, A weighted

64 dB (TRIM max.) / 78 dn (TRIM min.), unweighted , 20 - 20,000 Hz

One Line in to Line Out

82 dB (IHF, A weighted)

78 dB (unweighted , 20 - 20,000 Hz)

Total Harmonic Distortion:  0,5% (1 kHz, 0 VU)

Crosstalk:  65 dB (1 kHz)

Peak Level Indicator:  Light up at 8 dB (above 0 VU)

Mechanical Parts

Tape:  Compact CassetTe, C-30 to C-90, Chrome,(cobalt) tape (70 µs EQ)

Track Format:  4-track, 4-channel one direction recording/playback

Heads:  4-channel record/playback (Permalloy head);4-channel erase (Ferritte head)

Motors:  1 FG servo-controlled DC capstan motor; 1 DC reel motor; 1 DC control motor

Tape Speed: 9,5 cm/s (3-3/4 ips) ±1%

Pitch Controls:  ±12% of normal tape speed

Wow and Flutter:  ±0,08% peak (DIN/IEC/ANSI weighted) 0,04% rms (JIS/NAB, weighted)

Fast Wind Time:  approx. 85 sec. For C-60 tape

Recording Time:  15 minutes for C-60 tape

Dimensions (W x H x D):  482 x 147 x 357 mm (19" x 5-13/16" x 14-1/16")

Weight:  9,8 kg net (21-5/8 lbs)

 

Tandberg Series 6000X reel-to-reel

The new tape recorder Series 6000X is designed for the world's most discriminating markets, and is in a class by itself when it comes to quality, precision and sound reproduction. Tandberg Series 6000X Stereo has a modern design. The operational devices are clearly arranged and in spite of its numerous technicalities the tape recorder is simple and easy to operate.

Series 6000X Stereo is a fully transistorized stereo recorder with 3 speeds: 7-1/2, 3-3/4 and 1-7/8 ips. It is intended for use together with separate hi-fi amplifiers and has therefore no built-in power amplifiers. There are separate heads for recording, playback and erase, plus a bias head. Two moving coil meters indicate recording levels. These instruments also indicate the output level at playback.

The recording is based upon the Tandberg Cross-Field technique, giving sensationally good specifications for frequency range and Signal-to-Noise Ratio. Inputs for dynamic microphone, line, radio, magnetic and ceramic pick-up. Limiter prevents excessive input signal levels during recording. Listening during fast wind and rewind if desired, makes it easy to locate a programme on the tape.

Professional tape recorder users will appraise the merits of Series 6000X Stereo. Mixing possibilities in stereo with separate input controls (2 for each channel), microphone with pick-up, line or radio. 4 input controls for mixing in mono. AB-test,  - that is you can listen to a programme during recording (monitoring). And you can also listen to the playback during recording. Possibilities for "Sound-on-Sound" copying of a programme from one track to the other, and mixing in a new programme synchronously with the first one. Possibilities for echo and other trick recordings.

Tandberg 6000X Stereo has one-lever control of tape drive, push-buttons for electrical functions and track selection, illuminated 4-digit revolution counter, automatic end-stop, pause=button and possibilities for remote control of start and stop.

Tandberg Series 6000X Stereo is available in 2- or4-track versions, in teak or rosewood cabinets.

 

Crossfield Technique

The technique employed by Tandberg introduces a separate bias head which thoroughly magnetizes and reduces the recording zone on the tape as well as wavelength dependability losses in the record function. In turn, the need for equalization in the record amplifier as well as distortion in the ultimate recording is reduced. Consequently, Signal-to-Noise Ratio, Dynamic Range and Record Frequency Response are all vastly improved. The fact that Tandberg designs and manufactures its own heads further crystallizes the ultimate potential of each Tandberg recorder into an optimum range. Therefore, it becomes evident why Tandberg's position as the world 's leading producer of tape recorders remains unmatched in the world today.

 

Specifications:

Tape:  7" max reel size. Low Noise tape should be used for recording

Tape Speeds:  7-1/2, 3-3/4 and 1-7/8 ips

Speed Tolerance:  ±1%

Playing Time (1,200 ft tape)

7-1/2 ips : 2 x 32 min. [stereo]; 4 x 32 min. [mono]

3-3/4 ips : 2 x 64 min. [stereo]; 4 x 64 min. [mono]

1-7/8 ips : 2 x 128 min. [stereo]; 4 x 128 min. [mono]

Playing Time (1,800 ft tape)

7-1/2 ips : 2 x 48 min. [stereo]; 4 x 48 min. [mono]

3-3/4 ips : 2 x 96 min. [stereo]; 4 x 96 min. [mono]

1-7/8 ips : 2 x 192 min. [stereo]; 4 x 192 min. [mono]

Fast Wind and Rewind

1,200 ft Tape :  approx. 1-3/4 min.

1,800 ft Tape :  approx. 2-1/2 min.

Heads:  1 x Erase; 1 x Record; 1 x Playback; 1 x separate Cross-Field bias Head

Erase and Bias:  85,5 kHz, distortion less than 0,5%

Inputs Sensitivity/Impedance

MIC :  70 µV/ 200 - 700 Ω (Max. Input Level 70 mV)

Radio :  5 mV/100 k Ω (Max. Input Level 15 V)

Line :  5 mV/100 K Ω (Max. Input Level 15 V)

Pickup :  1 mV/33 K Ω  (Max. Input Level 3V. With pick-up selector in position C; Impedance adapted for ceramic pick-up. Sensitivity 10 mV. Max. Input Level 30 V)

Limiter: Attack time below 5 ms. Release time approx. 1 s

Outputs Load/Impedance

Radio :  0,75 V/ 11 K Ω 

Line :  160 mV/10 K Ω

Outputs : 1,5 V/200 Ω 

Headphones :  1,5 V/ 200 Ω

Distortion: 

0,5% (From record amplifier at 0 dB recording level)

0,3% (From playback amplifier at 1,5 V output voltage)

3% :  (From tape at 0 dB recording level)

Frequency Response

7-1/2 ips : 40 - 20,000 Hz ±2 dB

3-3/4 ips : 50 - 16,000 Hz ±2 dB

1-7/8 ips :  50 - 9,000 Hz ±2 dB

Measured according to DIN 45511

7-1/2 ips : 40 - 22,000 Hz

3-3/4 ips : 40 - 18,000 Hz

1-7/8 ips :  40 - 10,000 Hz

Wow:  Measured in % according to DIN 45511

7-1/2 ips : better than 0,1%

3-3/4 ips : better than 0,2%

1-7/8 ips :  better than 0,4%

Signal/Hum :  ( Unweighted) peak value measured in % according to DIN 45511 at tape speed 7-1/2 ips and 5% tape distortion

54 dB (4-track)

54 dB (2-track)

Signal-to-Noise Ratio (peak value according to DIN 45511 at tape speed 7-1/2 ips and 5% tape distortion)

56 dB (4-track)

58 dB (2-track)

Signal/Tape Noise: (measured unweighted RMS)

58 dB (4-track)

58 dB (2-track)

Signal/Tape Noise: (measured according to A-curve RMS)

64 dB (4-track)

66 dB (2-track)

Crosstalk: (at 1,000 Hz according to DIN 45511)

Mono:  better than 60 dB

Stereo:  better than 50 dB

Power Requirements:  115/230/240 V, 50/60 Hz

Power Consumption:  45 W

Dimensions (W x H x D):  15-1/2" x 6-1/2" x 12-3/8"

Weight:  21 lbs

 

Akai GX-210D reel-to-reel tape deck

Three Motor Automatic Reverse Stereo Tape Deck

GX-210D features 3-motor drive mechanism includes self-lubricating Hysteresis Synchronous Motor

To match the lasting performance of the GX Head, the GX-210D is equipped with Akai's unique self-lubricating capstan motor. The installation of two oil circulating mechanisms with cellulose fibres within the interior of the motor provides long lasting, trouble-free operation. Oil circulating speed is adjusted naturally according to motor revolutions and temperature, and because shaft rotation is always smooth and stable, various mechanical troubles resulting from oil circulation suspension do not occur. Further, these unique cellulose fibres also function as filters to keep the oil clean during the circulating process, adding to the motor's epoch-making longevity. Two highly efficient outer-rotor motors for supply and take-up reel drive assure consistent and smooth tape travel and ideal starting torque.

Other features

Automatic and Manual Reverse Playback

Akai's Exclusive Glass and X'tal Ferrite heads

Self-Lubricating Hysteresis Synchronous Capstan Drive Motor

Reel Drive Outer-Rotor Motors

Sturdy 2-Lever Control System

Instant Tape/Source Monitoring

Tape Selector for High Performance Low Noise Tape

Automatic Stop and pause Control

4-Digit Index Counter for Easy Indexing

Built-in Reel Retainers

 

Specifications

Track System:  4-track, 2-channel stereo system

Tape Speeds

7-1/2 ips (19 cm/sec) ±0,8%

3-3/4 ips (9,5 cm/sec) ±1%

Wow and Flutter

7-1/2 ips :  less than 0,08% (*0,12%) RMS

3-3/4 ips :  less than 0,12% (*0,25%) RMS

Total Wow and Flutter:  less than 0,18% RMS at 7-1/2 ips (Scotch #175 tape, 3,000 Hz recording and playback)

Frequency Response

S.R.T. Tape

7-1/2 ips :  30 to 25,000 Hz ±3 dB

3-3/4 ips :  40 to 20,000 Hz ±3 dB

Regular Tape

7-1/2 ips :  30 to 23,000 Hz ±3 dB

3-3/4 ips :  40 to 18,000 Hz ±3 dB

Total Harmonic Distortion:  less than 1,5%

Output Line :

1,228V (4 ±1 dB) at FWD mode, using a 250 Hz 0VU pre-recorded tape

1,228 V (4 ±1,5 dB) at REV mode, using a 250 Hz 0 VU pre-recording tape

Output DIN :  610 mV (-2 dB) using a 250 Hz 0 VU pre-recorded tape

Inputs

Mic :  better than 0,3 mV

Line :  better than 60 mV

DIN :  better than 5 mV (Low); 60 mV (High)

Recording/Playbackl Level: 1,228 V (4 ±1,5 dB ) at 7-1/2 ips 1,000 Hz 0 VU recording

Signal-to-Noise Ratio:  better than 50 dB (7-1/2 ips); better than 47 dB (3-3/4 ips)

Total Signal-to-Noise Ratio:  better than 47 dB at 7-1/2 ips

Crosstalk:  better than 45 dB

Erase Ratio:  better than 70 dB

Recording Bias Frequency:  102 kHz ±5%

Bias Leak:  less than -30 Vu

High Frequency Deviation

Between FED Channels :  within 3 dB

Between REV Channels :  within 4 dB

Between FWD-REV :  within 3,5 dB

Reversing Time :  2 to 3 seconds

Recording Capacity :  45 min. Stereo recording using a 1,800 ft tape at 7-1/2 ips

Fast Forward and Rewind Time:  110/90 sec. Using a 1,800 ft tape at 50/60 Hz

Motors

Capstan Motor :  2 speed Hysteresis Synchronous Motor

Type  :  HM2-16MC (winterized) 4-8 pole

Revolutions :  1,500/1,800 rpm at 50/60 Hz

Reel Motor :  Two 6-pole eddy current outer rotor motor

Type :  24XO-MR

Revolutions :  930/1,120 rpm at 50/60 Hz

Heads

Combo Recording/Erase Head

Type :  RE4-6 GX head

Gap :  3,5 to 5,5 micron (REC); 0,2 mm W Gap (Erase)

Impedance :  1,400 Ω  ±25% at 100 kHz (REC)

130 Ω  ±7% at 100 kHz (Erase)

DC Resistance :  5,5 Ω  (REC); 2,3 Ω  (Erase)

Playback Head

Type :  P4-202 GX Head

Gap :  1,2 to 2,2 micron

Impedance :  1,400 Ω  at 1,000 Hz

DC Resistance :  268 Ω

Semiconductors:  29 Transistors; 15 Diodes; 3 Zener Diodes

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

Power Consumption:  100 W max

Dimensions (W x H x D):  368 x 371 x 227 mm (14,5" x 14,6" x 8,9")

Weight:  15,4 kg (33,9 lbs)

 

Akai 1730D-SS reel-to-reel

4-channel / 2-channel Stereo Tape Deck

An entirely new world of sound has been created by Akai's electronics engineers who have developed a new and sophisticated line of 4-channel surround stereo equipment. Included in this line are the exciting 1730D-SS 4-channel/2-channel Stereo Tape Deck and 1730-SS 4-Channel/2-Channel Stereo Tape recorder.

With either system, you're completely surrounded in sound with four speakers, left and right in front, and left and right in the rear. This system gives you a real "sense of presence", the feeling of being exactly in the middle of a live performance. Both models are designed to be used for not only 4-channel stereo but also 2-channel stereo as well.

The 1730D-SS is perfectly matched with Akai's exclusive AA-6100 amplifier. this amplifier has 80 W music power for dynamic 4-channel stereo sound and accommodates both 4-channel and 2-channel stereo operation.

 

Akai's dependable 2-lever system complements the high grade parts and robust construction of this rugged 4-channel/2-channel stereo model

It is regular practice to employ mechanical control in one-motor tape decks.  Akai has long since employed this 2-lever system in our one-motor decks. When compared to an ordinary 1-lever system, because the Play/Rec and F.Fwd/Rew Levers are independent, the movable range of the levers are shorter, and operation is lighter. Also, because the F. Fwd/Rew Lever is separate, mis-operation is minimized. Further, because of the mechanical structure of this control system, other parts are not unfavourably influenced and mechanism endurance is extended. Rectangular shaped Control Panel with proportionately balanced controls.

4-Head System

Durable 2-Lever Controls for Extra Dependability

Instant tape/Source Monitoring

Newly Designed Slanted Control Panel for Easy Operation

Front and Rear Channel Headphone jacks for Easy Monitoring or Private Headphone Listening

Automatic Stop and Shut-Off

4-Digit Index Counter

Built-in Reel Retainers

Pause Control

 

Specifications

Recording System:  In-line 4-track, 4-channel stereo and 4-track 2-channel stereo recording

Playback System:  In-line 4-track, 4-channel stereo and 4-Track, 2-channel stereo playback

Tape Speed:  3-3/4 and 7-1/2 ips

Speed Deviation:  within ±1,5% at all speeds

Reels:  7", 5"  reels can be used

Wow and Flutter:

7-1/2 ips :  less than 0,15% rms

3-3/4 ips :  less than 0,2% rms

Frequency Response

7-1/2 ips :  30 to 22,000 Hz ±3 dB

4-3/4 ips :  40 to 13,000 Hz ±3 dB

Signal-to-Noise Ratio:  better than 48 dB

Total Harmonic Distortion

Line Output :  within 2% at 1,000 Hz 0 VU recording

Main Output :  within 3% at 1,000 Hz 5W (8 Ω )

Crosstalk: less than -50 dn (track) -40 dB (channel)

Erase Ratio:  less than 70 dB

Insulation Resistance: better than 50 MΩ

Insulation Durability:  1,000 V AC for more than one minute duration

Line Output:  +4 dB ±1,5 dB (1,228 V), at 0 VU indication, 250 Hz 0 VU recorded Tape. Required load impedance more than 25 k Ω

DIN Output:  -6 dB ±1,5 dB when using a 250 Hz recorded tape. Required load impedance more than 50 k Ω

Line Input:  above 40 mV/ 330 k Ω

Mic. Input :  above 0,4 mV/30 k Ω

DIN Input :  above 20 mV/100 k Ω

Fast Forward and Rewind Time: 

90 sec. 1,200 ft. Tape at 50 Hz

70 sec. 1,200 ft. Tape at 60 Hz

Motor:  Hysteresis synchronous 2 speed motor

Horse Power :  1/100 HP

Power Ratio :  85%

Revolutions :  3,000 to 1,800 RPM (at 50 Hz); 3,600 to 1,800 RPM (at 60 Hz)

Condenser Capacity:  3 µF (at 50 Hz); 2 µF (at 60 Hz)

Heads

Recording:  In-line 4-track 4-channel stereo (4-track 2-channel stereo)

Impedance :  125 Ω  ±20% at 1,000 Hz

Gap :  4/1,000 mm

Playback :  In-line 4-track 4-channel stereo (4-track 2-channel stereo)

Impedance :  1,200 Ω  ±15% at 1,00 Hz

Gap :  2/1,000 mm

Erase head :  In-line 4-track 2-channel stereo

Impedance :  195 Ω  ±10% at 100 kHz

Erase Head :  In-line Full track

Impedance :  350 Ω  ±10% at 100 kHz

Power Supply:  100 to 240 V AC, 50/60 Hz

Power Consumption:  55 W

Dimensions (W x H x D):  420 x 450 x 240 mm (16,5" x 18" x 9,5")

Weight:  17 kg (37,5 lbs)

 

Akai GX-265D tape deck

Stereo Tape Deck

AC Servo Motor Direct Capstan Drive System

6 Head system Automatic and manual Reverse Recording and Playback

One each GX forward recording, GX reverse recording, GX forward playback, GX reverse playback, forward erase, and reverse erase head make up the superior GX Head reverse recording and Playback system of this model. The quality and special process of the GX Head materials result in a wider dynamic range, better high frequency characteristics and tone quality and longer lasting performance. Manual Reverse Button and Automatic Sensing Tape Reverse completely eliminate the necessity of inverting reels by hand.

 

Symmetrical Head Block Layout for identical performance in both directions.

The arrangement of the head block is completely symmetrical in relation to the center capstan. The short and equi-distant tape path within the head block and between heads and reel tables on both sides assure identical performance in both directions. Tension Arms on both the take-up and supply reel sides provide perfect tape tension, also contributing to operating stability.

AC Servo Motor for capstan drive, Wow and Flutter reduced to 0,06.

The GX-265D employs a 3 motor drive system with a new AC Servo Motor for direct capstan drive, Rubber belts, flywheels, etc. are eliminated for reduced interference. This coupled with the center capstan system of this model reduces wow and flutter to an amazing 0,06%.

 

Microphone/Line Mixing

Individual Microphone and Line Input Level Controls and a built-in mic-line mixing circuit facilitate easy sound mixing from two separate sources.

Quick Pause Control

Depress the pause Switch to immediately suspend reel movement. When Pause mode is effected, the pinch wheel separates from the capstan by only 0,5 mm for a quick and smooth start when released. Especially convenient for editing tape.

Dual Monitoring

Tape/Source Monitor Switch enables comparison of source signals with just records signals for more professional recording results.

Automatic Stop

The Tension Arm/Stop lever drops at the end of the tape, activating an automatic stop mechanism which completely stops reel movement for operating safety.

Individual Track Selectors for Monaural or Stereo Preformance

Recording mode can be effected using individual left or right channel selectors or both channels simultaneously. A Recording indicator Lamp lights to confirm recording mode.

Output Level Control Enables Connection with any Amplifier

An Output Level Control facilitates adjustment of output level to correspond with your amplifier input.

Tape Selector Switch

A Tape Selector Switch facilitates the use of Low Noise or Wide Range tape. While high performance low noise tape is standard for this machine, the ability to use wide range tape further extends high range frequency response.

Feather Touch Controls for Smooth and Easy Mode Selection

VU Meter Scales Extended to +5 VU for Precise level Indication.

 

Specifications

Track System:  4-track, 2-channel stereo/monaural system

Reel Capacity:  up to 7" reel

Tape Speed:  7-1/2 and 3-3/4 ips (±0,7%)

Wow and Flutter:

At 7-1/2 ips :  less than 0,06% RMS

At 3-3/4 ips :  less than 0,09% RMS

Frequency Response (using Akai LN-150-7 Tape)

At 7-1/2 ips :  30 Hz to 25,000 Hz (±3 dB)

At 3-3/4 ips :  30 Hz to 19,000 Hz (±3 dB)

Distortion:  less than 0,5% (1,000 Hz, "0" VU)

Signal-to-Noise Ratio better than56 dB (measured via tape with peak recording level of +6 VU)

Erase Ratio:  better than 70 dB

Bias Frequency:  100 kHz

Heads :  6 - One each GX forward recording, GX reverse recording, GX forward playback, GX reverse playback, forward erase, and reverse erase head

Motors:  3 - One AC Servo motor for capstan drive, two eddy current motors for reel drive

Fast Forward and Rewind Time:  90 seconds using a 1200 ft tape at 60 Hz

Output Jacks

Line :  2x 0,775 V (0 VU) Required load impedance more than 20 k Ω

Phone : 1x 30 mV/8 Ω

Input Jacks

Microphone :  2x 0,25 mV/5 k Ω

Line :  2x 70 mV/150 k Ω

DIN Jack:  0,5 V/3 mV

Semiconductors:  38 Transistors; 26 Diodes

Power Requirements:  100 V to 240 V 50/60 Hz

Power Consumption:  80 W

Dimensions (W x H x D):  441 x 404 x 207 mm (7,4" x 15,9" x 8,2")

Weight:  16,6 kg (36,5 lbs)

Sony TC756-2 reel-to-reel

The Sony TC756 set new records for performance of home tape decks.

Hirsch-Houck Laboratories further noted. "The dynamic range, distortion, flutter and frequency response performance are so far beyond the limitations of conventional program material that its virtues can hardly be appreciated".

 

The Sony TC756-2 features a closed loop dual capstan tape drive system that reduces wow and flutter to a minimum of 0,03% , logic controlled transport functions that permit the feather-touch control buttons to be operated in any sequence, at any time without spilling or damaging tape: an AC servo control capstan motor and an eight-pole induction motor for each of the two reels; a record equalization selector switch for maximum record and playback characteristics with either normal or special tapes; microphone attenuators that eliminate distortion caused by overdriving the microphone pre-amplifier stage when using sensitive condenser mics; tape/source monitoring switches that allow instantaneous comparison of program source to the actual recording; a mechanical memory capability that allows the machine to turn itself on and off automatically for unattended recording; and a full, two-year guarantee.

In addition, the TC756-2 offers 15 and 7-1/2 ips tape speeds; Ferrite & Ferrite 2-track/2-channel stereo three-head configuration; and symphase recording that allows you to record FM matrix or SQ** 4-channel sources for playback through a decoder-equipped 4-channel amplifier with virtually non-existent phase differences between channels.

The Sony TC756-2 is representative of the prestigious Sony 700 Series - the five best three-motor 10-1/2" reel home tape decks that Sony has ever engineered.

 

Specifications

Track System:  2-track 2-channel stereo (TC756-2); 4-track 2-channel stereo (TC756)

Reels:  270 mm (10-1/2 inches) or smaller

Tape Speed:  19 cm/s (7-1/2 ips), 38 cm/s (15 ips)

Recording Time:  with 1,100 m (3360 ft) tape of 270 mm (10-1/2 inch) reel

3-hours stereo recording at 19 cm/s (7-1/2 ips) :  TC756

1,5 hours stereo recording at 19 cm/s (7-1/2 ips) :  TC756-2

Heads:

TC576 Model

Record :  RF140-2902

Playback :  PF142-4202

TC756-2 Model

Record :  RF142-2202A

Playback :  PF142-2202A

Motors:

Capstan :  IC-624G (AC servo controlled)

Reel :  IC-638R (2)

Frequency Response (with Sony SLH tape):

20 - 35,000 Hz at 38 cm/s (15 ips)

30 - 30,000 Hz ±3 dB at 38 cm/s (15 ips)

20 - 30,000 Hz at 19 cm/s (7-1/2 ips)

30 - 25,000 Hz ±3 dB at 19 cm/s (7-1/2 ips)

Signal-to-Noise Ratio

TC756 Model

Sony SLH Tape :  56 dB

Standard Tape :  53 dB

TC756-2 Model

Sony SLH Tape :  59 dB

Standard Tape :  56 dB

Wow and Flutter

0,04% (RMS) weighted at 38 cm/s (15 ips)

0,06% (RMS) weighted at 19 cm/s (7-1/2 ips)

Overall Distortion:  1,2%

Record Bias Frequency:  approx 160 kHz

Input Sensitivity/Impedance

Mic :  0,19 mV (-72 dB) / low

Line In :  60 mV (-22 dB) / 100 k Ω

Output Level/Impedance

Line Out :  0,44 V (-5 dB) with 100 k Ω load  / 100 k Ω

Headphone :  8 Ω  Impedance

Rec/Power Bandwidth Connector (AEP, UK)

Input Impedance :  3,9 k Ω

Output Impedance :  8,2 k Ω

Semiconductors:  1 ICs; 2 FETs; 58 Transistors; 46 Diodes

AC Outlet (USA):  Unswitched, 300 W maximum

Power Requirements:  AC 120 V, 60 Hz (USA, Canada); AC 110, 127, 220 0r 240 V 50/60 Hz (AEP, UK)

Power Consumption:  100 W (USA); 110 W (AEP, UK, Canada)

Dimensions (W x H x D):  435 x 451 x 221 mm (17-1/8" x 17-3/4" x 8-3/4")

Weight:  24 kg (52 lb 14 oz)

 

Akai CR-80 SS cartridge tape recorder

8-Track, 4/2-Channel Cartridge Recording /Playback

Model CR-80 SS is equipped with a built-in 4-channel power amplifier and 4 Speaker Jacks for Instant 4-channel or 2-channel operation. This compact unit makes 4-channel stereo recording a "cinch" even where space is a factor. The same Akai robust mechanism for top rate performance and endurance. One Micron Gap Rec/Playback Head for amazing frequency response to 16,000 Hz

 

1-Micron Gap Head

Just what is a one-micron gap head? It's a head with a width of only one astounding micron. Until now two or four micron gap heads have been the standards for comparing tape recorders. However, Akai has pushed ahead and narrowed the head gap; thus narrowing the difference between tape recording results and actual sound.

The Akai perfected one-micron gap head has these distinctive advantages over heads with wider gaps:

A - Excellent Frequency Response even at low tape speed

B - Clear, high pitched sound can be regenerated as a frequency tone and recorded smoothly with a minimum of distortion.

Motor

The motor of model CR-80 SS is a condenser starting two-speed induction motor. The winding characteristics of this 2-8 pole motor provides tape-speed stability and minimizes distortion

 

 

Other features:

Public Address System - this unit can easily be converted into a P.A. System

Automatic Stop/Continuous Play

4/2 Channel Stereo Selector

Inputa and Phone Selector

Program Indicator Lamp

 

Specifications

Track System:  8-track, 4-channel /2-channel compatible stereo

Tape Speed:  3-3/4 ips

Wow and Flutter:  less than 0,25% rms

Equalization:  Correct equalization for playback of tapes recorded to NAB curve

Frequency Response:  30 to 16,000 Hz (±3 dB)

Distortion:  less than 2% (1000 Hz "0" VU)

Output Power:

Total Music Power :  40 W (10 W each channel) at 8 Ω

Continuous Power :  28 W (7 W each channel) at 8 Ω

Signal-to-Noise Ratio:  better than 47 dB

Erase Ratio:  better than 60 dB

Bias Frequency:  60 kHz

Heads:

Rec/Playback :  8-track, 4-channel stereo head

Erase :  8-track, 4-channel erase head

Motor:  2-speed induction motor

Fast Forward Time:  4-channel stereo, 230 seconds using a 300 ft cartridge tape (approx. 15 ips)

Recording Capacity:  30/60 min. 4-ch/2-ch stereo using a 300 ft cartridge tape

Output Jacks

Line (4) :  1,23 V("0" VU) / 100 Ω

Speaker (4) :  10 W / 8 Ω 

Phone (1) :  30 mV / 8 Ω

Input Jacks:

Mic (4) :  0,5 mV/5 k Ω

Line (4) :  50 mV/150 k Ω

DIN Jacks:  2 Input/Output DIN jacks:  0,4 V/10 mV (front/rear channels)

Semiconductors:  19 Transistors; 19 Diodes

Integrated Circuits:  4 Linear IC; 4 Power IC

Power Requirements:  120 V 60 Hz

Power Consumption:  75 W

Dimensions (W x H x D):  485 x 138 x 280 mm (19,4" x 5,5" x 11,2")

Weight:  12 kg (26 lbs)