Troubleshooting, Specifications, No Sound

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-1090, refer to the suggestions for the following con- ditions:

Front Panel Power Indicator Is Not Lit

No main power to the RB-1090. 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.

No Sound

If the amp is getting AC power, but is pro- ducing no sound, check the PROTECTION IN- DICATORS on the front panel. If lit, see below. If not, check all of your connections and con- trol settings on associated components. Check

the INPUT SELECTOR SWITCH on the RB-1090

back panel to be sure that its setting matches the type of input you are using.

Protection Indicator Is Lit

The front panel PROTECTION INDICATORS light

when the RB-1090 protection circuits have shut off the amplifier. Typically, this occurs only when the ventilation openings are blocked, when there is faulty speaker wir- ing, 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 ampli- fier itself.

English

Specifications

Continuous Power Output

(20-20 kHz, < 0.03%):

380 watts/ch into 8 ohms

700 watts/ch into 4 ohms

Total Harmonic Distortion (20Hz-20kHz, 8 ohms): < 0.03%

Intermodulation Distortion

(60 Hz : 7 kHz, 4:1): < 0.03%

Frequency Response (±1 dB): 10Hz-100kHz

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

1000

Speaker Impedance (combined load):

4 ohms minimum

Signal to Noise Ratio (IHF A network):

125 dB

Input Impedance/Sensitivity:

33 k Ohms/1.8volt

Power Requirements:

115 Volts, 60 Hz (USA)

230 Volts, 50 Hz (EC)

Power Consumption:

800 Watts

Dimensions (W x H x D):

440 x 240 x 398 mm

173/8 x 91/2 x 153/4 in

Weight (net): 38 kg, 83.6 lb.

All specifications are accurate at the time of printing.

Rotel reserves the right to make improvements without notice.