8
Troubleshooting
Most difficulties in audio systems are the result of
poor or wrong connections, or improper control
settings. If you encounter problems, isolate the
area of the difficulty, check the control settings,
determine the cause of the fault and make the
necessary changes. If you are unable to get
sound from the RMB-1077, refer to the sug-
gestions for the following conditions:

Front Panel Power Indicator Is

Not Lit

No main power to the RMB-1077. Check AC
power connections at the amplifier and the
AC outlet. Check the front panel power switch.
Make sure that it is set to the ON position. If
using 12V trigger power-on, make sure that
a trigger signal is present at rear panel 12V
TRIG IN jack.

No Sound

If the amp is getting AC power, but is producing
no sound, check the PROTECTION INDICATOR
on the front panel. If lit, see below. If not, check
all of your connections and control settings on
associated components. Make sure that your
input connections and speaker connections
match your system configuration.

Protection Indicator Is Lit

The front panel PROTECTION INDICATOR
light when the RMB-1077 protection circuits
have shut off the amplifier. Typically, this oc-
curs only when the amplifier has overheated,
when there is faulty speaker wiring, or after
a period of extreme use. Turn off the system
and wait for the amp to cool. Then push the
front panel power switch in and out to reset
the protection devices. If the problem is not
corrected or reoccurs, there is a problem with
the system or the amplifier itself.
Specifications
Power Configurations (FTC) 7 x 100 Watts
Watts/Channel 100 watts, all channels driven, with 20KHz filter,
8 ohm load, 20-20 kHz, 0.03% THD
Total Harmonic Distortion (20Hz-20kHz, 8 ohms)
Continuous Rated Power < 0.03%
One-Half Rated Power < 0.03%
One Watt per Channel < 0.03%
Power Output (4 Ohms, 0.09% THD) 200 watts
Intermodulation Distortion 60 Hz:7 kHz, 4:1 < 0.03%
Damping Factor (8 ohms) 400
Amp Gain 27.4dB
Input Sensitivity/Impedance 1.2 V / 8.3 k ohms
Frequency Response 10 - 80 KHz (±3dB)
Signal to Noise Ratio (IHF A) 105 dB
Power Requirements
USA 120 Volts, 60 Hz
Europe 230 Volts, 50 Hz
Power Consumption 400 Watts
70 Watts - Idling
3 Watts - Standby
Dimensions (W x H x D) 432 x 72 x 415 mm
171/8 x 27/8 x 163/8 in
Panel Height (for rack mounting) 60 mm, 23/8 in
Weight (net) 7.8 kg, 17.2 lb.
All specifications are accurate at the time of printing.
Rotel reserves the right to make improvements without notice.
RMB-1077 Seven Channel Power Amplifier