Category:Mid High Fidelity (most Japanese recorders fall into this category)
Country of Manufacture:Japan
Release dates:1981 - 1985
Speeds: 3 3/4, 7 1/2
Max Reel Size("): 7"
Number of heads: 6
Dimension: 9.6 x 17.3 x 8.9" (244 x 440 x 227mm)
Head Composition: Permalloy, Ferrite/Glass
Head Configuration: Stereo
# Motors: 3
Voltage(s): 110-120v, 220-240v
Frequency Response:7½ ips: 25Hz to 25kHz (0 VU) ( 3dB)
Wow and Flutter: 0.03% at 7½ ips 0.04% at 3¾ ips
Signal-to-Noise Ratio:63 dB at 7½ ips
Sound quality rating:7 / 10
Long-term reliability rating: 7 / 10
Weight: 37.5 lbs (17 kg)
In an attempt to bolster flagging sales in the by now declining reel to reel marketplace, Akai came up with this striking, small and easy to use machine that would, with its seven inch reel capacity, fit into almost any hi-fi console, much like a cassette deck.
Three DC motors were incorporated but the reel tables were still belt driven, probably the worst design fault Akai made on this deck.
Two capstans were used, but not in a dual capstan drive capacity. The capstans turned in opposite directions to each other with only one engaged at a time, depending on tape direction. This did, however enable a very quick reversing turnaround capability (auto-reverse took only 0.4 seconds).
The tape threading system (left) was quite unique. The tape was taken up between the reels by means of a loading roller. The six heads were positioned in between the reels with the three forward direction heads facing the three reverse direction ones.
Here’s a great review of the GX-77
Rewind speed: 80 seconds using a 1,200 ft tape
Inputs: microphone impedance – 600 ohms
Line: 70mV (Input impedance 47K ohms
Outputs: line: 0.775V at 0 VU, required load impedance: more than 20K ohms
Headphones: 1.3mV 8 ohms at 0 VU