Adcom GFA-4402, GFA-4404, GFA-4302, GFA-4702 User Manual
Specifications and Main Features
- Models: GFA-4302, GFA-4402, GFA-4304, GFA-4404, GFA-4702
- Power Output:
- GFA-4302: 30 W/Ch @ 4Ω Stereos, and 100 W @ 4Ω Mono
- GFA-4402: 30 W/Ch @ 4 Ohms Stereo, 80 W/Ch @ 2 Ohms Stereo and 150 W @ 4 Ohms Mono
- GFA-4304: 30 W/Ch @ 4 Ohms Stereo, and 100 W @ 4 Ohms Mono
- GFA-4404: 30 W/Ch @ 4 Ohms Stereo, 90 W/Ch @ 2 Ohms Stereo, and 150 W @ 4 Ohms Mono
- GFA-4702: 70 W/Ch @ 4 Ohms Stereo, 140W/Ch @ 2 Ohm Stereo: and, 250 Watts @ 4 Ohms Mono
- Total Harmonic Distortion (THD): < 0.1% for both GFA-4302 and GFA 4402; < 0.25% for as well GFA 4304 and GFA4404; < 0.2% for GFA 4702
- Frequency Response:
- GFA-4302, GFA-4402, GFA-4304, GFA-4404, GFA-4702: 0Hz - 50KHz +0dB, -3dB
- Input Impedance: 8.5 KΩ
- Input Sensitivity:
- For GFA-4302, GFA-4402, GFA-4304 & GFA 4406: 400mV - 2V
- 600mV - 2V for GFA 4702
- Separation: >90dB
- S/N Ratio (Signal-to-Noise Ratio): > 100dB
- Damping Factor: GFA-4302: 350.
- Idle Current:
- GFA-4302: 3 Amps
- GFA-4402: 3 Amps
- GFA-4304: 6 Amps
- GFA-4404: 9 Amps
- GFA-4702: 10 Amps
- Weight:
- GFA-4302: 8 lbs (3.7kg)
- GFA-4402: 10 lbs (4.6kg)
- GFA-4304: 12 lbs (5.5kg)
- GFA-4404: 19 lbs (8.7kg)
- GFA-4702: 32 lbs (14.6kg)
- Dimensions:
- GFA-4302: 9.75x10.75x2.3 in (WxLxH)
- GFA-4402: 9.75x12.75x2.3 in
- GFA-4304: 9.75x14.75x2.3 in
- GFA-4404: 9.75x24.25x2.3 in
- GFA-4702: 9.75x15.5x2.3 in
Frequently Asked Questions
Q: What is the simultaneous power output for Stereo 4 Ohm at the GFA-4302?
A: The simultaneous power output for Stereo 4 Ohm at the GFA-4302 is GFA-4302: 30 W/Ch.
Q: Are speakers of total impedance that is lower than 2 Ohms allowed to be connected?
A: Even though ADCOM amplifiers are stable driving loads of impendances less than around two ohms some loads less than that lead to continuous operation causing thermal overload.
Q: Why is it necessary to maintain the right speaker polarity when it comes to wiring up the amplifier?
A: For amplifiers to function correctly, a speaker’s polarity must be set up in such a way that the sound does not get distorted or the amplifier does not get beaten up.
Q: Are power fuses required to be used when installing the amplifier?
A: Yes, a fuse or some kind of protection device has to be installed within 18 inches of the battery’s 12 Volt powered cable for the sake of your vehicle and the amplifier’s wellbeing.
Q: In the event that the preamp volume on the amplifier was set too low, how am I able to increase the input sensitivity?
A: The amplifier sensitivity controls can be found on the end panel of the amplifier. They need to be rotated fully in the clockwise direction for best results.
Q: For what kind of vehicles and engines is ADCOM amplifiers used?
A: The ADCOM amplifiers are to be used with the 12 Volt and negative ground vehicles.
Q: Can I carry out the installation of the amplifier myself?
A: It is highly recommend that you get the work done by an ADCOM Car Audio Dealer that has been authorized by them to ensure that performance is optimal and warranty is intact.
User Manual
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