Member Summary

Sound Rating: 7 / 10 # Owners: 1
Relaibility Rating: 8 / 10 Views: 223

Member Actions

Improve This Post

Improve Post

We highly appreciate your initiative in improving posts. Please select the category in which you want to contribute. Thank you.

Technical Details

Brand: Akai




Electronic:Solid State

Country of Manufacture:Japan

Release dates:1986-1986

Tracks:1/4 Rec/PB

Speeds: 3 3/4, 7 1/2

Max Reel Size("): 10.5"

Number of heads: 4

Head Composition: Permalloy

Head Configuration: Stereo

# Motors:

Voltage(s): 110-120v

Frequency Response:( 3dB): 7½ ips: 25Hz to 33kHz

Wow and Flutter:less than 0.03% WRMS at 7½ ips, less than 0.04% WRMS at 3¾ ips

Signal-to-Noise Ratio:better than 65 dB at 7½ ips (dbx OFF)

Sound quality rating:7 / 10

Long-term reliability rating: 8 / 10

Additional Details


The GX-747dbx was the successor
to the GX-747 with the addition of a
dbx decode-encode system. Also, instead of the LED bar meters, the GX-747dbx
reverted back to more conventional VU meters. This could have been partly
due to economy. The 747dbx was intended to replace rather than be a more
deluxe version of the 747 and both dbx and LED display may have pushed
the price up too much.
The dbx type I NR widely expanded the dynamic range of the tape. Apart
from this and the VU meters, the 747dbx was almost identical to the 747.
Recording input controls had a memory marker ring (like the GX-646)
and remote control was available as an optional extra.
Like the GX-747, the GX-747dbx was available in either black or silver

Additional Info

Distortion: less than 0.4% at 7½ ips / Dynamic range: 128 dB (dbx switch: ON, 1 kHz, peak recording level) / Rewind speed: 75 seconds for 1200ft / Inputs: mic: 0.25mV impedance 600 ohms, line: 70mV 100 ohms / Outputs: line. 410 mV. headphone: 1.3 mW / Dimensions: 17.3 x 19.4 x 10″ (440 x 493 x 256mm) / Weight: 51.0 lbs (23.2kg) / quarter-track stereo


No reviews yet.

Leave A Review:

Report Errors or Inaccuracies to Akai GX-747dbx Page

You need to be logged in for this feature to work.