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 GXC-325D tape deck

Dual Monitoring Cassette Stereo Tape Deck

With taped music, as in five card stud, you'll always get the results you want when you play with a deck that always delivers what you want. Take this deck, one of the new cassette decks from Akai.

The GXC-325D. It comes stacked with features to make your music sound clearer, and richer. It has a three head function, with separate recording and playback heads for wider frequency response. It comes with a closed loop double capstan, which maintains proper back tension, and perfect tapw and head contact.

 

The recording and playback heads of this new 3-head system are Akai's revolutionary GX Heads and are joined for perfect parallelism of recording and playback head gaps. This combined with the Closet Loop Double Capstan system and AC Servo Motor of this model clearly makes it the leader in the field of cassette recording.

Two each capstans and pinch rollers are used, one each of which is positioned in parallel at either side of the head block for stable tape speed and tape tension. This shuts out the adverse influence from outside the "closed" area between capstans so that there is no tape vibration and head-to-tape contact is perfect. Some of the other merits of this system include:

Perfect tracking and the elimination of azimuth alignment adjustment mechanisms, beacons, etc.

Better Signal-to-Noise Ratio and a wider dynamic range

Wow and Flutter reduced to 0,55% WRMS and sound drop-out minimized

3-head system facilitates Dual Monitoring and because of head portioning, there is no time lag between recording and playback signals during monitoring

Intermodulation suppressed for clearer playback

C.P.G. [Center Pole Frequency Generated] system of AC Servo Motor results in greater inertia and increassed output for extremely quiet operation and accurate motor revolutions

Performance not influenced by cassette unevenness

Completely stable operation and incomparably clear recording and playback tone quality

Lasting new machine performance

 

Features:

New 3-Head Cassette System

Individual recording/Playback Glass & X'tal Ferrite Heads

Closed-Loop Double Capstan Drive Mechanism

Amazingly Low 0,055% WRMS Wow and Flutter

Newly Designed C.P.G. AC Servo Motor

Akai's exclusive A.D.R. Plus Double Process Dolby Noise Reduction System

Memory Rewind

Peak Level Indicator

Limiter Circuit Prevents Over-Level Recording

Instantaneous Full Release Automatic Stop

Output Level Control Mic/Line Mixing

Tape Run Indicator

Self-Lock Pause Control

Direct Function Change Control

 

Specifications

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

Tape Speed:  1-7/8 ips

Wow and Flutter:  0,055% WRMS

Frequency Response:

Low Noise Tape :  30 Hz to 15,000 Hz (±3 dB)

CrO₂ Tape :  30 Hz to 16,000 Hz (±3 dB)

Fe-Cr Tape :  30 Hz to 19,000 Hz (±3 dB)

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

Signal-to-Noise Ratio:  better than 51 dB (measured via tape with peak recording level of +5 VU. Dolby switch On, Improves up to 10 dB above 5 kHz)

Erase Ratio:  Better than 70 dB

Bias Frequency:  100 kHz

Heads:  three head system includes One Glass and Crystal Ferrite Rec/Power Bandwidth, combination head, and One Ferrite Erase head

Motors:  AC servo outer rotor motor

Fast Forward and Rewind Time:  75 sec. (C-60 cassette Tape)

Output jacks:

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

Phone :  30 mV/ 8 k Ω

Input Jacks:

Microphone :  0,3 mV/8 k Ω

Line :  70 mV/100 k Ω

DIN Jack:  0,775 V/2 mV

Semiconductors:  60 Transistors; 51 Diodes: 4 FET's; 1 IC.

Power Requirements:  110 to 120 V , 220 to 240 V, 50/60 Hz

Power Consumption:  30 W

Dimensions (W x H x D):  442 x 142 x 301 mm (17,4" x 5,6" x 11,9")

Weight:  8,6 kg (18,9 lbs)

 

Akai GX-280D-SS tape deck

4-Head 3-Motor Automatic Reverse Surround Stereo Tape Deck

Akai's GX Head 4-Channel Surround Stereo system eliminates the inability to pick up and reproduce true concert hall sound. Every pitch of sound and reverberation effect is reproduced with all of the exciting "sense of presence" experienced when attending a live concert. Akai's surround stereo supplements conventional stereo's two front speakers with two additional rear speakers to front the "2-2 system". The listener is surrounded by two sets of speakers (left & right front and left & right rear). This arrangement does not mean, however, that simply adding two speakers to a 2-channel stereo system is all that is necessary for 4-channel stereo playback. Four separate recordings are made using four individual channels (four tracks in one direction) of the magnetic recording tape. This 4-channel stereo tape feeds into four pre and main amplifiers to activate a 4-speaker system. Thus, at playback time, sounds from separate channels are emitted from each speaker providing the listener with a feeling that he is listening to concert hall sound from the best seat in the auditorium. Model GX-280D-SS is a compatible 4-channel/2-channel stereo model. For 2-channel stereo operation, only the front channels are utilized. For exciting 4-channel surround stereo, a 4-channel stereo external amplifier or two 2-channel stereo amplifiers can be used to activate a 4-speaker system.

 

GX (Glass & Crystal Ferrite) Head

Akai has equipped this model with its new and amazing Glass & Crystal Ferrite Recording and Playback heads to bring you unequalled open reel high fidelity sound. With the Glass & Crystal Ferrite head, superbly wider frequencies with clear highs can be recorded in all their true fidelity with low noise tape. In other words, with the GX head, a high dynamic range and excellent Signal-to-Noise Ratio are achieved. The secret of this quality head is made of single crystal ferrite and is mounted and set in glass. The superior high range characteristics are contributable to thw structure of the head gap which focused the magnetic field into a sharp oblong radius. This focused field recording system minimizes high frequency loss, eliminating undue equalization and achieving a wider dynamic range.

 

Specifications

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

Reel Capacity:  up to 7" reel

Tape Speed:  7-1/2 and 3-3/4 ips (±0,5%)

Wow and Flutter:

At 7-1/2 ips :  less than 0,10% RMS

At 3-3/4 ips :  less than 0,15% RMS

Frequency Response (using Low Noise Tape)

At 7-1/2 ips :  20 Hz to 25,000 Hz (±3 dB)

At 3-3/4 ips :  30 Hz to 20,000 Hz (±3 dB)

Frequency Response (using Regular Tape)

At 7-1/2 ips :  30 Hz to 23,000 Hz (±3 dB)

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

Distortion:  less than 0,8% (1,000 Hz, "0" VU)

Signal-to-Noise Ratio:  55 dB

Erase Ratio:  better than 70 dB

Bias Frequency:  110 kHz

Heads :  4 - GX recording and playback, full-track erase, 2-channel erase head

Motors:  3 - One Servo motor for direct capstan drive, two 6-pole outer-rotor motors for supply and take-up reel drive

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

Recording Capacity:

2-channel Stereo : 2 hrs (1,200 ft tape, 3-3/4 ips)

4-channel Stereo : 1 hr (1,200 ft tape, 3-3/4 ips)

Output Jacks

Line :  4x 1,23 V (0 VU)/10 k Ω ; Required load impedance more than 25 k Ω

Phone : 2x 40 mV/8 Ω

Input Jacks

Microphone :  4x 0,5 mV/10 k Ω

Line :  4x 0,1 V/150 k Ω

DIN Jack: 2x  0,4 V/60 mV (High) 10 mV (Low)

Semiconductors:  68 Silicon Transistors; 52 Diodes

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

Power Consumption:  140 W

Dimensions (W x H x D):  435 x 505 x 250 mm (17,4" x 20,2" x 10")

Weight:  22,4 kg (49,5 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)

Akai M-10 tape deck

This Three Motors Auto-Reverse Solid State Stereo Tape Recorder offers you perfect stereo hi-fi tape recording and automatic reverse playback with concert hall sound.

 

Outstanding Features

4-track stereo/monaural recording and playback

3 speed  (7-1/2; 3-3/4; and 1-7/8 ips)

3 heads - Erase, Playback/Record and bias heads - Crossfield Head System

3 motors -  A hysteresis synchronous 3-speed motor for capstan drive; Two 6-pole eddy current out rotor motors for supply and take-up reel drive.

Wide Cross-Field Frequency Response

40 W music power solid state amplifier with two integrated circuits

Sensing tape continuous reverse (Auto reverse)

Manual reverse

Shield type head for high Signal-to-Noise Ratio

Sound on sound

Automatic stop/shut off; Instant stop control with start button

Automatic pinch wheel release, Automatic lever release

Two lever system ensures dependable and durable operation

Track selector for simple operation between stereo and monaural

Tape lifter in fast forward and rewind operation

100 kHz biased for FM multiplex recording

Tape speed equalizer

Treble and Bass controls

DIN jack with selector switch for High Low input

Two stereo headphone jacks

4-digit index counter with reset button,

Two large VU meters

Vertical or horizontal operation

Fine oil finished wooden cabinet or vinyl leather wooden cabinet

Universal voltage selector ( from 100 V to 240 V, 50/60 Hz)

 

Cross-Field Head

On conventional recorders the signal and bias are applied to the same recording head. Therefore the frequencies recorded, especially the high frequency component of the recorded signal tend to be attenuated or erased by the effect of the bias field.

On the exclusive Akai Cross0Field Head which was developed by Akai for practical use the signal and bias heads are mounted in opposition with their centres slightly off. As the recorded signal is entirely unaffected by the prevailing effect of the entire frequency spectrum with maximum fidelity.

 

Sensing Tape Continuous Reverse

Automatic reverse with metallic sensing tape is used for playback only. Reverse operation will occur when metalic sensing tape on prerecorded tape makes contact with the Sensing PIN. Put metallic sensing tape as the desired reverse point on shiny side of the prerecorded tape and another metallic sensing tape at the desired reverse point  on dull side of the prerecorded tape. So, the M-10 will give continuous playback in both directions between two points

 

Specifications

Tape Speed: 7-1/2; 3-3/4; and 1-7/8 ips

Wow and Flutter

At 7-1/2 ips :  less than 0,08% rms

At 3-3/4 ips :  less than 0,12% rms

At 1-7/8 ips :  less than 0,20% rms

Frequency Response

At 7-1/2 ips :  30 - 26,000 Hz

At 3-3/4 ips :  30 - 19,000 Hz

At 1-7/8 ips :  30 - 9,000 Hz

Distortion: within 2% 1,000 Hz 0VU

Signal-to-Noise Ratio :  better than 50 dB

Input Level

Mic :  better than 0,5 mV

Line :  better than 50 mV

DIN :  better than 5 mV (Low); 50 mV (high)

Power Output: 

15 W maximum per each channel at Undistorted Power, total 30 W

20 W maximum per each channel at Music Power, total 40 W

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

Recording Bias Frequency:  100 kHz

Recording Level Indicator:  2 VU meters

Recording System:  4-track stereo / monarual, Cross-Field bias system

Fast Forward and Rewind Time:  75 seconds using 1,200 foot tape at 50 Hz  (60 seconds at 60 Hz)

Recording Capacity: 

8 hours monaural recording at 1-7/8 ips (1,200 foot tape)

4 hours stereo recording a 1-7/8 ips

Max. Reel Size:  7" reel

Head: 3 heads - Erase, Rec/Pb, Bias

Motor:  3 motors- hysteresis synchronous 3-speed motor ; Two 6-pole eddy current out rotor motors

Speaker:  2 - 4" x 6" speakers

Semiconductors:  22 Transistors; 2 ICs

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

Power Consumption:  165 W

Dimensions:  474 x 350 x 242 mm (18-3/4" x 13-3/4" x 9-1/2")

Weight:  22 kg (48,4 lbs)

 

Akai X-330D reel-to reel

Stereo Tape Deck with Multi-Purpose Program Minder

The X-330D enables to enjoy different music for 24 hours, in addition to selection and repeating your favourite tune forever.

 

All features:

Program Minder - Automatic Continuous Reverse

Sensing tape continuous reverse. Manual reverse

Cross-field head

3 motors -  A hysteresis synchronous 3-speed motor for capstan drive; Two 6-pole eddy current out rotor motors for supply and take-up reel drive.

3-speed  (7-1/2; 3-3/4; and 1-7/8 ips)

Magnetic brake with tach generator (stoppage occurs within 3seconds from F.F/RWD condition (10-1/2"  reel)

Up to 10-1/2 reel acceptable and back tension control

4-track stereo/monaural recording/playback. For playback the X-330D requires an external power amplifier and speakers

4 heads - Erase, Playback, Record and bias heads

All silicon transistorized pre-amplifier

12 hours continuous hi-fi stereo recording capacity at 1-7/8 ips (7,200 foot tape)

Shield type head for high Signal-to-Noise Ratio

Tape lifter in fast forward and rewind operation

Track selector for simple selection between stereo and monaural

Automatic stop/shut off, Automatic pinch wheel release

Sound on sound, sound with sound, sound over sound

100 kHz biased for FM multiplex recording

Remote controllable, AC outlet with automatic shut off switch

Standard/ low noise tape selector

Tape cleaner, 4-digit index counter with reset button, VU meters

Fine oil finished wooden cabinet

Universal voltage selector ( from 100 V to 240 V, 50/60 Hz)

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)

 

Akai GXC-710D cassette deck

The GXC 710D is another front-load model , and very sophisticated it is, too.

The Double Action" eject and tape loading safety feature is completely foolproof. When you press the Eject button, the cassette envelope moves out from the front panel just like a drawer. The upper part is carefully positioned for easy tape loading and levers at either side of the cassette holder make sure the cassette can't be inserted upside down. It's easy it's simple. And it's safe.

The combination once again of Akai's GX head plus Dolby Noise reduction plus Akai's ADR system plus a new drive system gives the highest of hi-fi performance. Tape speed is perfectly stabilised. Wow/flutter is as low as 0,08% rms. What's more, with the switchable Multiplex Filter circuit to cut out the 19 kHz pilot signal during stereo broadcast recording through an FM receiver, you get a clear and undistorted frequency response range to 17,000 Hz.

The rest of the features you can almost tale for granted. But let's just remind you of them to make sure you know exactly how much the GXC 710D has to offer you.. Memory Rewind Peak Level Indicator. Tape Selector Switches (low noise, CrO₂, ferrichrome) Direct Function Change Controls . Mic/Line Input Selector for improved Signal-to-Noise Ratio . Automatic Stop with tape release. Pause Control Line Output Level Control.

The GXC 710D is, as we said a very sophisticated machine- in its styling , in its features and in its outstanding performance.

 

Specifications

Track System:  4-trak, 2-channel stereo

Tape Speed:  4,8 cm/s (1-7/8 ips

Wow and Flutter:  less than 0,08% WRMS

Frequency Response: 

Low Noise Tape :  30 to 14,000 Hz (±3 dB)

CrO₂ Tape :  30 to 16,000 Hz (±3 dB)

Fe-Cr  Tape :  30 - 17,000 Hz (±3 dB)

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

Signal-to-Noise Ratio:  better than 50 dB (with Dolby; up to 60 dB , above 5 kHz)

Bias Frequency:  100 kHz

Erase Ratio:  better than 70 dB

Heads:  GX recording/playback head and erase head

Motor:  4-pole hysteresis synchronous outer-rotor motor

Fast Forward and Rewind Time:  80 sec C-60 cassette tape

Output Jack: 

Line :  0,775 V (0 VU) required load impedance; more than 10 k Ω

Phone :  30 mV/8 Ω

Input Jack:

Microphone :  0,3 mV/5 k Ω

Line :  70 mV/100 k Ω

DIN Jack : 

Output :  0,55 V

Input :  3 mV

Dimensions (W x H x D):  440 x 142 x 304 mm (17,3" x 5,6" x 12")

Weight:  8,8 kg (19,4 lbs)