Rotel Eight Channel Power Amplifier RMB-1048 User Manual download pdf (Page 8)

Troubleshooting

Most difficulties in audio systems are the re-

sult 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-1048, re-

fer to the suggestions for the following con-

ditions:

Front Panel Power Indicator Is

Not Lit

No main power to the RMB-1048. 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 signal sensing auto power-on, make sure

that a signal is present at the inputs. If using

12V trigger power-on, make sure that a trig-

ger signal is present at rear panel screw ter-

minals.

No Sound

If the amp is getting AC power, but is producing

no sound, check the PROTECTION INDICA-

TORS on the front panel. If lit, see below. If

not, check all of your connections and con-

trol settings on associated components. Make

sure that your input connections and speaker

connections match your selected stereo/mono

configuration.

Protection Indicator Is Lit

The front panel PROTECTION INDICATORS

light when the RMB-1048 protection circuits

have shut off the amplifier. Typically, this oc-

curs only when the ventilation openings are

blocked, 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.

RMB-1048 Eight Channel Power Amplifier

Specifications

Continuous Power Output - all channel driven 40 watts/ch into 8 ohms

(20-20 kHz, < 0.05% THD)

Total Harmonic Distortion < 0.05%

(20Hz-20kHz, 8 ohms)

Intermodulation Distortion < 0.03%

(60 Hz : 7 kHz, 4:1)

Frequency Response (± 1 dB) 15Hz–100kHz

Damping Factor (20-20,000 Hz, 8 ohms) 150

Speaker Impedance 4 ohms minimum

Signal to Noise Ratio (IHF A network) 110 dB

Input Impedance 22 k ohms

Input Sensitivity 1.0 volt

Power Requirements

USA: 115 Volts, 60 Hz

Europe: 230 Volts, 50 Hz

Power Consumption 400 Watts

Dimensions (W x H x D) 432 x 121 x 432 mm

17 x 4

/4 x 17 in

Panel Height 109 mm, 4

/32 in

Weight (net) 15.1 kg, 33.3 lb.

All specifications are accurate at the time of printing.

Rotel reserves the right to make improvements without notice.

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Rotel Eight Channel Power Amplifier RMB-1048 User Manual Page 8

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