Akai GX 230

The Akai GX-230 is a mid-1970s solid-state reel-to-reel tape deck designed for high-fidelity consumer use, recognized for its auto-reverse operation and robust engineering with Akai’s innovative GX head technology.

Technical Overview

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

• Heads: Three heads:
  1 GX forward playback
  1 GX reverse playback
  1 combination GX recording/erase head

• Motors: Three-motor transport (2 eddy current reel motors, 1 AC servo capstan motor)

• Tape Speeds: 7½ ips (19 cm/s), 3¾ ips (9.5 cm/s)

• Maximum Reel Size: Up to 7 inches

• Frequency Response:
  7½ ips: 30 Hz to 23 kHz (±3 dB, using Akai LN-150-7 tape)
  3¾ ips: 30 Hz to 19 kHz (±3 dB)

• Wow and Flutter:
  0.07% WRMS at 7½ ips

• Signal-to-Noise Ratio:
  60 dB (7½ ips)

• Erase Ratio:
  Better than 70 dB

• Total Harmonic Distortion:
  Less than 1% (1 kHz, 0 VU)

• Fast Forward/Rewind:
  75 seconds for 1,200 ft tape

• Inputs:
  Line: 70 mV
  Mic: 0.3 mV
  DIN: 0.5 V

• Outputs:
  Line: 0.775 V
  Headphones: available
  Output power: 7W x 7W min. at 8Ω (100Hz to 20kHz, ≤3% THD)

• Semiconductors: 41 transistors, 28 diodes

• Power: Multiple voltage options; AC 120V, 220V, 100–240V switchable

• Power Consumption: 90W

• Dimensions: 440 x 395 x 205 mm

• Weight: 15.2–16.7 kg

• Year Released: circa 1975

Notable Features

• Auto-reverse playback and record

• Piano key transport control for easy operation

• Advanced AC servo motor for direct capstan drive, ensuring precise speed and stability

• GX heads are crafted from glass and crystal ferrite, renowned for their wear resistance and excellent high-frequency response

• Symmetrical head block layout plus impedance roller and tension arms for consistent tape travel and tension in both directions

Summary

The Akai GX-230 offers impressive reliability, low wow and flutter, robust three-motor transport, and superior head technology for long life and accurate analog sound. Its maximum frequency response (23 kHz at 7½ ips) and stable tape handling make it a standout choice among vintage consumer decks, with auto-reverse convenience and solid build quality.