Rotel RMB-1077: Troubleshooting

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 

17

1

/

8

 x 2

7

/

8

 x 16

3

/

8

 in

Panel Height 

(for rack mounting) 

60 mm, 2

3

/

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