Adcom GFA-7400 User Manual

GFA-7400 SPECIFICATIONS
Power Rating (To FTC Requirements)
100 watts continuous average power into 8 ohms at any frequency between 20Hz to 20kHz with all channels driven at
less than 0.075% THD
150 watts continuous average power into 4 ohms at any frequency between 20Hz to 20kHz with all channels driven at
less than 0.075% THD
IM Distortion (SMPTE)
1 watt to 100 watts into 8 ohms. < 0 075%
1 watt to 150 watts into 4 ohms. < 0.075%
IM Distortion (COIF, Any Combination from 4kHz to 20kHz)
100 watts into 8 ohms. £ 0.025%
150 watts into 4 ohms..^ 0.025%
THD + Noise at 100 watts into 8 ohms (Typical)
20Hz. 0.012%
1kHz.... 0.012%
10kHz. 0.02%
20kHz. 0.025%
THD + Noise at 150 watts into 4 ohms (Typical)
20Hz... 0 025%
1kHz....... 0 025%
10kHz..... 0 035%
20kHz. 0.045%
Frequency Response @ 1 Watt into 8 ohms (10Hz to 20kHz).+0, -0.25dB
Power Bandwidth (-3dB).....1 5Hz to 65kHz
Dynamic Headroom into 4 ohms.2.5 dB
Signal to Noise Ratio, “A” Weighted (100 watts into 8 ohms).> 110dB
Gain. 2 9dB
Input Sensitivity
fori Watt.....0.1 volts
for 100 Watts.....1.0 volts
input Impedance.......... . 5 0 kQ
Damping Factor (20Hz to 20kHz) . . . ~ 400
Rise Time (5kHz, 80V, peak-to-peak square wave, 20% to 80%). 4 . 5 p S
Power Consumption (Continuous, All Channels Driven)
Quiescent........
Maximum.
100 watts into 8 ohms.
Power (Available in 230VAC on special order).
Chassis Dimensions.
Maximum Dimensions...
Weight.......
Weight, Packed.
All specifications are subject to change or improvement without
product may vary slightly.
... 96VA
. 1440VA
... 1165V A
. 115VAC - 50/60Hz
. 5” (127mm) x 17” (432mm) x 14” (355.6mm)
.5%" (146mm) x 17” (432mm) x 15” (381mm)
...... 42 lb. (19.1 kg)
.. 48 lb. (22.8 kg)
notice. Dimensions and weights listed are approximate, actual
17

Adcom GFA-7400 Specifications

Power

continuous power per channel into 8 ohms	100 watts
continuous power per channel into 4 ohms	150 watts
power consumption quiescent	96 VA
maximum power consumption	1440 VA
power consumption at 100 watts into 8 ohms	1165 VA
power supply voltage	115 VAC - 50/60 Hz

Distortion

IM distortion SMPTE at 8 ohms	≤ 0.075%
IM distortion SMPTE at 4 ohms	≤ 0.075%
IM distortion CCIF at 8 ohms	≤ 0.025%
IM distortion CCIF at 4 ohms	≤ 0.025%
THD + noise at 100 watts into 8 ohms at 20Hz	0.0012%
THD + noise at 100 watts into 8 ohms at 1kHz	0.0012%
THD + noise at 100 watts into 8 ohms at 10kHz	0.02%
THD + noise at 100 watts into 8 ohms at 20kHz	0.025%
THD + noise at 150 watts into 4 ohms at 20Hz	0.025%
THD + noise at 150 watts into 4 ohms at 1kHz	0.025%
THD + noise at 150 watts into 4 ohms at 10kHz	0.035%
THD + noise at 150 watts into 4 ohms at 20kHz	0.045%

Performance

frequency response at 1 watt into 8 ohms	+0, -0.25 dB
power bandwidth	1.5 Hz to 65 kHz
dynamic headroom into 4 ohms	2.5 dB
signal to noise ratio	≥ 110 dB
gain	29 dB
input sensitivity for 1 watt	0.1 volts
input sensitivity for 100 watts	1.0 volts
input impedance	50 kΩ
damping factor	≥ 400
rise time	4.5 µS

Weight and Dimensions

chassis dimensions	5” (127mm) x 17” (432mm) x 14” (355.6mm)
maximum dimensions	5 3/4” (146mm) x 17” (432mm) x 15” (381mm)
weight	42 lb. (19.1 kg)
packed weight	48 lb. (22.8 kg)