Akai GX-625 Service Manual
Specifications and Main Features
- Model: GX-625 (black panel type also applies)
- Track System: 4 Track 2 Channel Stereo System
- Reel Capacity: Maximum of up to 10-1/2 inch reel
- Heads: Erase head x 1, GX recording head x 1, GX playback head x 1
- Motors: AC servo motor for capstan drive x 1, AC eddy current motors for reel drive x 2
- Tape Speed:
- 19 cm/s + 0.8% (7-1/2 ips)
- 9.5 cm/s + 1.0% (3-3/4 ips)
- Pitch control: over + 6%
- Wow & Flutter:
- At 19 cm/s, less than 0.03% WRMS, 0.08% DIN 45500
- At 9.5 cm/s, less than 0.04% WRMS, 0.10% DIN 45500
- Tape Winding Time: 130 sec. using 2400 ft. 740 m tape
- Frequency Response:
- 30 to 26000 Hz + 3 dB at 19 cm/s
- 30 to 19000 Hz +3dB
- Signal to Noise Ratio: Better than 62 dB at 19 cm/s DIN 45500; better than 60 dB at 9.5 cm/s DIN 45500
- Harmonic Distortion: 0.5% best
- Input:
- MIC: 0.25 mV (input impedance 2.4 kohms), Need microphone impedance: 600 ohms
- Output:
Line: 775 mV at 0 VU, load impedance required: not less than 20 kohms Line: 70 mV (input impedance 100 ohms) - Phone: 100 mV/8 ohms at 0 VU - DIN Input: 2 mV (input impedance: 10 kohms) - Output: 755 mV, load impedance required: not less than 20 ohms.
- Output_Spec: 440 (W) x 446 (H) x 241 (D) mm (17.3 x 17.6 x 9.5")
- Weight: The metric units are 17.6 kg (38.9 lbs)
- Requirements for Power: Power supply for specific regions: For Japan: 100V 50/60 HZ Power supply for US & Canada 120V 60 Hz For Australia/Kenya/Europe; 220v/240V switchable 50HZ - 110/120/220/240V.50/60 HZ for other regions.
- Power Consumption** Allowable Power: Japan: 80W, CSA, AAL: 150 W, U/T: 150 W
Frequently Asked Questions
Q1: What type of tape does the GX-625 use?
A1: A 4 Track 2 Channel stereo system tape compatible with the GX-625 machine which can use reels of size up to 10-1/2 inches.
Q2: How is the tape speed changed?
A2: The tape speed selector allows adjusting the speed to either 19 cm/s (7-1/2 ips) or 9.5 cm/s (3-3/4 ips).
Q3: What is the power rating of the GX-625?
A3: CSAAAL–UT models require 80W, while other versions of the GX-625 require 150W.
Q4: What is the weight of the GX-625?
A4: The weight of the GX-625 is 17.6 kg (38.9 lbs).
Q5: Is it possible to change the voltage in the GX-625?
A5: Yes, the GX-625 has a voltage selector switch for easier use in different countries.
Q6: What is the frequency response characteristics for GX-625?
A6: For GX-625, the frequency response ranges from 30-26000 Hz +3dB when using 19 cm/s, and 30–19000Hz +3 dB when 9.5 cm/s.
Q7: What is the largest size April reel compatible with GX-625?
A7: The maximum reel diameter compatible with the GX-625 is around 10-12 inches.
User Manual
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