REAR PANEL DESCRIPTION
1. MAIN INPUT
This is a female XLR-type connector that accepts a balanced line-level signal from a mixing console or other signal source.
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2. LOOP OUT
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This is a male XLR-type connector that produces exactly the same signal that is connected to the MAIN INPUT jack. Use it to daisy-chain several SR1522z's together off the same signal source.
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7. THERMAL Indicator
There is also a thermal protection circuit that monitors the internal temperature of the amplifiers and heatsink. If the temperature should exceed a safe operating level, this indicator lights and the signal is muted to allow the amplifiers to cool. When the temperature cools to a safe level once again, the thermal protection circuit deactivates and normal operation continues. Note: Activation of the thermal protection circuit is an indication that you should take steps to avoid continued thermal problems. See �Thermal Considerations� on page 6.
3. Level Control
This controls the overall signal level at the input to the built-in power amplifiers. It ranges from �15 dB to +5 dB of gain. The center detent is 0 dB (unity gain).
4. Power ON Indicator
When the POWER switch is turned on, and the linecord is connected to an active AC power supply, this indicator lights green to let you know that you�re ready to rock and roll. The cool blue LED on the front of the cabinet works in the same way.
8. POWER Switch
Use this switch to turn the SR1522z on and off. Make sure the level control is turned down before you turn it on.
5. SIGNAL Present Indicator
This LED illuminates whenever there is a signal present at the MAIN INPUT connector on the rear panel. It senses the signal just after the level control, so if the level control is turned down, the SIGNAL Present indicator turns off.
9. AC Receptacle
This is where you connect the AC linecord to provide AC power to the SR1522z�s built-in power amplifiers. Plug the linecord into an AC socket properly configured for your particular model.
6. LIMIT Indicator
The SR1522z has a built-in limiter that prevents the amplifier outputs from clipping or overdriving the transducers. The LIMIT indicator lights when the limiter is activated. It's okay for the LIMIT indicator to blink occasionally, but if it blinks frequently or lights continuously, turn down the level control until the LIMIT indicator only blinks occasionally.
