Troubleshooting; Power Indicator Is Not Illuminated; Fuse Replacement 7; No Sound - Rotel RB-1581 Owner's Manual

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
RB-1581, refer to the suggestions for the following conditions:

Power Indicator Is Not Illuminated

No main power to the RB-1581. 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.

Fuse Replacement 7

If everything checks out correctly and you still cannot get the amplifier to turn
on, check for a blown fuse. Disconnect the AC from the wall and remove
7
the fuse holder on the back panel. If the fuse is blown, replace with a
new fuse and try again.
Note: Make sure that the power cord is disconnected from the wall before
checking or replacing the fuse. Replace only with the identical size and type
fuse (3AG 125V 12A for U.S. version or 5ST6.3 for European version).

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.

Protection Indicator Is Illuminated

The front panel PROTECTION INDICATOR lights when the RB-1581
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

Continuous Power Output Continuous Power Output
(20-20k Hz, <0.09%, 8 ohms)
Total Harmonic Distortion (20Hz - 20kHz, 8 ohms) Total Harmonic Distortion
Intermodulation Distortion (60Hz:7kHz, 4:1) Intermodulation Distortion
Damping Factor (20Hz-20kHz, 8ohms) Damping Factor
Input Impedance/Sensitivity Input Impedance/Sensitivity
Unbalanced
Balanced
Amplifier Gain Amplifier Gain
Unbalanced
Balanced
Frequency Response (μ1db) Frequency Response
Speaker Impedance Speaker Impedance
Power Requirements Power Requirements
USA:
Europe:
Power Consumption Power Consumption
Dimensions (W x H x D) Dimensions
Front Panel Height Front Panel Height
Weight (net) Weight
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.
9
500 watts
< 0.03%
< 0.03%
800
12k ohms/ 1.6 volts
100k ohms/ 2.5 volts
32 dB
28 dB
10 Hz - 100k Hz
4 ohms minimum
120 volts, 60 Hz
230 volts, 50 Hz
550 watts
431 x 144 x 407 mm
7
17 x 5 / x 16 ins
8
1
3U/132.6mm/5 / ins
4
17.1 kgs, 37.62 lbs