Specifications; Power Amplifier Bias Adjustment - Rotel RA-980BX Technical Manual

Specifications
RA-980BX
Continuous
Power
Output.. .100
watts* per channel, min.
RMS
both channels driven
into
8
ohms
from 20 to 20,000
kHz
with
no
more
than
0.03%
total
harmonic
distortion.
DIN Output
190
watts per channel
(1
kHz,
4
ohms,
1% THD)
Peak Current
80
A
(0.1
ohms, 10 usee,
1
Pulse)
Total
Harmonic
Distortion.
..No
more
than
0.03% (con-
tinuous rated
power
output)
No
more
than
0.03% (continuous
1/2
rated
power
output)
No
more
than
0.05%
(1
watt per
channel
power
output,
8
ohms)
Intermodulation
DistOrtion...No
more than 0.05% (con-
tionuous rated
power
output)
No
more
than 0.05% (con-
tinuous
1/2
rated
power
output)
No
more
than
0.05%
(1
watt per
channel
power
ouptut,
8
ohms)
Output:
SPEAKERS
4
ohms
minimun
HEADPHONE
8
-
2,000
ohms
Damping
Factor:.
1000 (20 to
20,000 Hz, 8
ohms)
Input Sensitivity/
Impedance:
PHONO:
MC
250 uV/
100
ohms
MM
2.5
mV/
47
kohms
CD,
TUNER
150
mV/
33
kohms
AUX,
TAPE
1
,
2
150
mV/
33
kohms
Overload
Level
(THD
0.5%,
1
kHz):
PHONO:
MC
17
mV
MM
160
mV
CD,
TUNER
5
V
AUX,
TAPE
1,2 5
V
Frequency Response:
PHONO
20
to
20,000 Hz,
+/-
0.2
dB
(RIAA
STD)
CD,
TUNER
4
to
100 kHz,
+1.0 dB, -3.0
dB
AUX,
TAPE
1
,2
4
to
100 kHz,
+
1
.0
dB, -3.0
dB
Tone
Control:
BASS +/-
6.0
dB
(100 Hz)
TREBLE +/-
6.0
dB
(10
kHz)
Signal to
Noise Ratio
(IHF,
A
network):
PHONO:
MC
70
dB
MM
75
dB
CD,
TUNER
97
dB
AUX,
TAPE
1,2
97
dB
MISCELLANEOUS
Power
Requirement
120
V/
60
Hz,
220
V/ 50 Hz,
240
V/
50
Hz
(depending
on
destinations)
Power Consumption
400
watts
Dimension
(overall)
440 (W)
x
121 (H)
x347
(D)
mm
1
7-3/8" x
4-1 3/1 6"
x
1
3-1
1/1
6"
Weight
(net)
10.1
kg
/
22.2
lbs
•
Specifications
and
design subject to
possible modifica-
tion
without
notice.
• 'Measured pursuant to the Federal
Trade
Commis-
sion's
Trade
Regulation Rule
or,
Power Claims
for
Amplifiers (applicable to
the U.S.A.
only).
Power
Amplifier Bias
Adjustment
Instruments: DC milli-voltmeter
Notes:
Prior to Bias Adjustment, run about
5
minutes with rated output
(8
ohm) and warm
up Power Transistor and Heat Sink.
Set Volume control to minimum.
Step
Coupling
Adjust Adjust for
Plus Lead
Minus Lead
1
TP3 TP1
VR601
DC milli-voltmeter
reads
10
mV
2
TP4
TP2 VR602