ROTEL RMB-1555 - Manual (Page 11)

11
Troubleshooting
Most difficulties in audio systems are the result of incorrect 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
amplifier, refer to the suggestions for the following conditions:
Power Indicator Is Not Illuminated
No main power to the amplifier. Check the front panel power switch. Make
sure that it is set to the on position. Check AC power connections at the
amplifier and the AC outlet.
Fuse Replacement
If another electrical device works when plugged into the power outlet, but the
Power Indicator of the unit does not light when plugged into the same outlet
and the Power Switch is pushed in, it indicates that the internal power fuse
may have blown. If you believe this has happened, contact your authorized
Rotel dealer to get the fuse replaced.
No Sound
If the amp is getting AC power, but is producing no sound, check the
Protection indicator on the front panel. If it is lit, see below. If not, check all
of your connections and control settings on associated components.
Protection Indicator
The front panel POWER indicator is blinking when the amplifier protection
circuits have shut off the amplifier. Typically, this occurs 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.
Specifications
RMB-1555
Continuous Power Output 120 watts/channel,
(20-20kHz, < 0.03%, 8 ohms) 5 channels dirven
Total Harmonic Distortion < 0.03%
(20Hz-20kHz, 8 ohms)
Intermodulation Distortion (60Hz : 7kHz, 4:1)
< 0.03%
Frequency Response (+0.5, –3dB) 10Hz - 100kHz
Damping Factor (20-20kHz, 8 ohms) 180
Speaker Impedance 4 ohms minimum
Signal to Noise Ratio (IHF A network) 116 dB
Input Impedance/Sensitivity 12k Ohms/1.5 volt
Gain 26.5 dB
Power Requirements
U.S. version 120 Volts, 60Hz
European version 230 Volts, 50Hz
Power Consumption 650 Watts
Dimensions
Width x Height x Depth 431 x 188 x 454 mm
17 x 7 1 /
2
x 17 7 /
8
ins.
Front Panel Height 4U / 176.8mm / 7 ins.
Weight (net) 21.8kg / 48.1 lbs.
RMB-1585
Continuous Power Output 200 watts/channel,
(20-20kHz, < 0.03%, 8 ohms) 5 channel driven
Total Harmonic Distortion < 0.03%
(20Hz-20kHz, 8 ohms)
Intermodulation Distortion (60 Hz : 7 kHz, 4:1) < 0.03%
Frequency Response (+0.5, –3dB)
10Hz - 100kHz
Damping Factor (20-20kHz, 8 ohms) 260
Speaker Impedance
4 ohms minimum
Signal to Noise Ratio (IHF A network) 116 dB
Input Impedance/Sensitivity
Unbalanced 12k Ohms/1.9 volt
Balanced 100k Ohms/3.8 volt
Gain 26.5 dB
Power Requirements
U.S. version 120 Volts, 60Hz
European version 230 Volts, 50Hz
Power Consumption 1100 Watts
Dimensions
Width x Height x Depth 431 x 237 x 454 mm
17 x 9 3 /
8
x 17 7 /
8
ins.
Front Panel Height 5U / 221mm / 8 3 / 4 ins.
Weight (net) 36kg / 79.3 lbs.
All specifications are accurate at the time of printing.
Rotel reserves the right to make improvements without notice.
Rotel and the Rotel HiFi logo are registered trademarks of The Rotel Co, Ltd., Tokyo, Japan.