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Technical Details

Brand: Akai

Model:GX-365D

Category:Mid High Fidelity

Application:Consumer

Electronic:Solid State

Country of Manufacture:Japan

Release dates:1970 - 1974

Original Price: $1000

Tracks:1/4 Rec/PB

Speeds: 1 7/8, 3 3/4, 7 1/2, 15

Max Reel Size("): 7"

Number of heads: 3

Dimension: 18.5 x 16.25 x 11.2 (470 x 413 x 283mm)

Head Composition: Ferrite/Glass

Head Configuration: Stereo

# Motors: 3

Auto Reverse?:No

Voltage(s): 110-120v, 220-240v, Multi

Outputs: RCA, DIN

Frequency Response:7½ ips: 30Hz to 28kHz ( 3dB)

Wow and Flutter:0.04% at 7½ ips

Signal-to-Noise Ratio:48 dB at 7½ ips

Sound quality rating:5 / 10

Long-term reliability rating: 7 / 10

Weight: 61 lbs (27.7kg)

Additional Details

Description

The GX-365D (also available with a built in main-amp as the GX-365) was the first Akai to feature
the virtually indestructible Glass & X’tal (GX) ferrite heads. It boasted 3 motors and 3 speeds (four with a capstan sleeve and change-over pinch roller) and had a single reverse playback function. The transport was relay controlled with a pcb sporting no less than 13 relays!
A complex “Magnetic brake control” system, user-selected, was based on tape thickness. Back-tension was less for thinner tapes (0.5mm or 25 microns) than for thicker ones (1.5 mm or 50 micron).
The Reverse-O-Matic feature was controlled by a mechanical device, seen at the top of the deck, featuring two rings. one silver and one black The black ring was set to”0″ at the beginning of the tape, it was connected via a belt to the right reel motor and acted like a tape counter. The scale near the black ring indicated the tape length, up to 2400 ft and the silver ring was then rotated by the user to the desired tape length. While the tape played, the silver ring remained stationary
as the black one revolved. When they met, the recorder went into reverse-play mode. This rather primitive and limited device was discontinued after this model.

The GX-365D also had an auto-shut off, which killed the power at the end of the tape and a ‘Compute-o-Matic’ feature, which was a kind of limiter. Unlike a limiter, however, which compresses the incoming signal, the Compute-o-Matic function was a master recording volume potentiometer, driven by a small motor. This master volume pot was turned back from maximum input by a small motor until distortion-free recording levels were obtained.

A remote control socket (the remote unit was an optional extra) was situated at the back of the machine.

One of the most expensive Akais of its time, this machine didn’t sell in large numbers and therefore is relatively rare these days.

List price when new was US$1000.00 for the GX-365D and $1100.00 for the GX-365.

Additional Info

Price when new (in the USA)
GX-365D – $1000.00; GX-365 – $1100.00 (£382 in the UK)

Heads
three: erase, GX record and GX playback
Motors
1 capstan motor (belt drive)
2 x eddy current outer rotor motors
Tape speeds
17/8 ips, 3¾ ips and 7½ ips (15 ips with adapter)
Frequency response ( 3dB)
7½ ips: 30Hz to 28kHz
3¾ ips: 30Hz to 23kHz
1 7/8 ips: 40Hz to 12kHz
Wow & flutter
less than 0.04% at 7½ ips, 0.07% at 3¾ ips and 0.14% at 17/8 ips
Signal to noise ratio
better than 48 dB at 7½ ips
Rewind speed
75 seconds using a 1,200 ft tape at 50 Hz
Audio output power
15 watts RMS per channel
Speakers
Two 4 x 2″ monitoring (GX 365 only)

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