Adcom GFA-7400 User Manual

GFA-7300 SPECIFICATIONS
Power Rating (To FTC Requirements)
60 watts continuous average power into 8 ohms at any frequency between 20Hz to 20kHz with all channels driven at less
than 0.075% THD
90 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 60 watts into 8 ohms.
1 watt to 90 watts into 4 ohms.
IM Distortion (CCIF, Any Combination from 4kHz to 20kHz)
60 watts into 8 ohms.
90 watts into 4 ohms.
. < 0 07%
. < 0.07%
< 0 025%
< 0.025%
THD + Noise at 60 watts into 8 ohms (Typical)
20Hz.
1kHz.
10kHz.
20kHz.
0.0075%
. 0.007%
0.015%
0 025%
THD + Noise at 90 watts into 4 ohms (Typical)
20Hz.
1kHz.
10kHz.
20kHz.
0.015%
0.010%
0 022 %
0 035%
Frequency Response @ 1 Watt into 8 ohms (10Hz to 20kHz)
+0, -0 25dB
Power Bandwidth (-3dB)
1.5Hz to 100kHz
Dynamic Headroom into 4 ohms.
Signal to Noise Ratio, “A" Weighted (60 watts into 8 ohms)
Gain.
. 1.9 dB
>115dB
29dB
Input Sensitivity
for 1 Watt.
for 60 Watts.
. 0 1 volts
1.14 volts
Input Impedance
50kQ
Damping Factor (20Hz to 20kHz)
>800
Rise Time (5kHz, 90V, peak>to-peak square wave, 20% to 80%)
2 7|iS
Power Consumption (Continuous, All Channels Driven)
Quiescent.
Maximum.
60 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.
. 80VA
. 960VA
. 840V A
. 115VAC - 50/60 Hz
.4V 4 ” (118mm) x 17” (432mm) x 14” (355 6mm)
.5” (127mm) x 17" (432mm) x 14%” (375mm)
. 351b. (15 9 kg)
. 40 lb. (18.2 kg)
notice. Dimensions and weights listed are approximate, actual
18

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)