Specifications - Adcom GFA-565 Service Manual

GFA-565 SPECIFICATIONS
Power
Rating (To
FTC
Requirements)
300
watts
continuous average
power
into
8
ohms, any
frequency
between
20Hz and 20kHz,
@
less
than
0.02% THD.
450
watts
continuous average power
into
4
ohms, any
frequency
between
20Hz and 20kHz,
@
less
than
0.02% THD.
850
watts
continuous average power
into
2
ohms, any frequency
between
20Hz
and 20kHz,
@
less
than
0.02% THD.
*
*
With fan option
installed.
IM
Distortion
(SMPTE)
1
watt
to
300
watts
into
8
Ohms
0.005%
1
watt
to
450
watts
into
4
Ohms
0.007%
1
watt
to
850
watts
into
2
Ohms
0.009%
IM
Distortion
(CCIF,
Any
Combination from
4kHz
to
20kHz)
300
watts
into
8
Ohms
0.002%
350
watts
into
4
ohms
0.003%
850
watts
into
2
ohms
0.004%
THD
+ Noise
@
300
Watts
into 8
Ohms
20Hz
0.002%
1kHz
0.002%
10kHz
0.004%
20kHz
0.010%
THD
+
Noise
@
450
Watts
into
4
Ohms
20Hz
0.003%
1kHz
0.003%
10kHz
0.007%
20kHz
0.015%
THD
+ Noise
@
850
Watts
into
2
Ohms
20Hz
0.003%
1kHz
0.003%
10kHz
0.009%
20kHz
0.018%
Frequency Response
@
1
Watt
into
8
Ohms
10Hz
to
20kHz
+0,-0.5dB
Power
Bandwidth
(-3dB)
0.7Hz
to
80kHz
Dynamic Headroom
into
4
Ohms
1
6dB
Signal-to-Noise Ratio,
"A" Weighted
300
watts
into
8
Ohms
>115dB
Gain
27dB
Input
Impedance
50,000
ohms
Input Sensitivity
300
watts
into
8
Ohms
2.1
5V rms
1
watt
into
8
Ohms
1
30mV
rms
Damping
Factor
20Hz
to
20kHz
>1000
Rise
Time
5kHz,
1
20V peak-to-peak square wave,
20%
to
80%
2.9us
Semiconductor
Complement
47
transistors,
6
zener diodes,
17
diodes,
1
1C,
1
diode bridge
16