Country of Manufacture:Japan
Release dates:1982 - 1986
Speeds: 3 3/4, 7 1/2
Max Reel Size("): 10.5"
Number of heads: 4
Head Composition: Permalloy
Head Configuration: Stereo
Frequency Response:( 3dB): 7½ ips: 25Hz to 26kHz
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
Sound quality rating:7 / 10
Long-term reliability rating: 8 / 10
The GX-646 was an auto-reverse,
4 track stereo deck with two speeds ( 3¾ & 7½ ips) and
a whole lot of automatic features including timers, tape bias adjustments,
tape position memory and more.
This was the final model from the 600-series. It replaced the GX-636
and had the capability to use Extra Efficiency tapes (EE).
Other improvements over previous 600 series models were:
“hanging” type VU meters, a three mode timer start switch, and
an additional bias adjustment control on the front panel.
Additional images and a user manual for this recorder
are supplied on the Get Reel Contemporary Classics CD-ROM.
Distortion: less than 0.4% at 7½ ips / Rewind speed: 75 seconds for 1200ft / Inputs: Mic: 0.25mV impedance 600 ohms, Line: 70mV 100 ohms / Outputs: Line: .775V at 0 VU – required load impedance more than 20 Kohms / Dimensions: 17½ x 19 x 10″ (440 x 483 x 256mm) / Weight: 46.4lbs (21kg) / quarter-track stereo