Adcom GFA 7500 — Tested
For sale is an
Adcom GFA-7500 multichannel power amp. It
is rated at 150 watts x 5 channels. The amp has been tested and adjusted
Specifications
150 watts per
channel continuous average power into 8 ohms
225 watts per channel continuous average power into 4 ohms
Any frequency with all channels driven at less than 0.075% THD
IM Distortion (SMPTE)
1 watt to 150 watts into 8 ohms.......<0.05%
1 watt to 225 watts into 4 ohms.....<0.05%
IM Distortion (CCIF, Any Combination from 4kHz to 20kHz)
150 watts into 8 ohms.....<0.01%
225 watts into 4 ohms.....<0.01%
THD + Noise at 150 watts into 8 ohms (Typical)
20Hz.........0.006%
1 kHz........0.006%
10 kHz......0.02%
20 kHz......0.04%
THD + Noise at 225 watts into 4 ohms (Typical)
20 Hz........0.01%
1khz..........0.01%
10 kHz......0.035%
20 kHz......0.065%
Frequency Response at 1 watt into 8 ohms (10Hz to 20kHz)...........+ 0, -
0.25dB
Power Bandwidth (-3dB)...........1.5Hz to 100kHz
Dynamic Headroom Into 4 ohms...........1.9dB
Signal to Noise Ratio, "A" Weighted (150 watts into 8 ohms)...........>
115B Gain.......29dB
Input Sensitivity
for 1 Watt output..........0.1 volts
for 150 Watts output....1.14 volts
Input Impedance.........50K ohms
Damping Factor ( 20Hz to 20kHz )........>800
Rise Time (5kHz, 90 V, peak-to-peak square wave, 20% to 80%)........2.7
microseconds (uS)
Power Consumption (Continuous, All Channels Driven).....Quiescent.....80VA.....Maximum.....1440VA
General Power.....115VAC - 50/60Hz
Chassis Dimensions.....7.25" x 17" x 15"
Weight.....56 lbs. ( 25.4 kg )
Weight Packed.....64 lbs. ( 29.1 kg )