
REAR PANEL DESCRIPTION
POWER Switch
Use this switch to turn the SWA1501 on and off. Make sure the signal source’s level control is turned down before you turn it on.
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.
AC Receptacle
This is where you connect the AC line- cord to provide AC power to the SWA1501’s
LIMIT Indicator
The SWA1501 has a
SIGNAL Present Indicator
This LED illuminates whenever there is a signal present at the FULL RANGE INPUT connector on the rear panel.
THERMAL Indicator
The SWA1501 has a thermal protection circuit that monitors the internal temperature of the amplifiers and heatsink. If the internal temperature should exceed a safe operating level, this indicator lights and the signal is muted to allow the amplifier 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 7.
FULL RANGE INPUT
These are female
THRU (FULL RANGE OUTPUT)
These are male
HIGH PASS (MID/HIGH FREQ) OUTPUT
These are male
SUBWOOFER LEVEL Control
This adjusts the subwoofer level. The center detent position provides 15 dB of headroom with a nominal +4 dBu input signal. Use this as a starting point for setting the balance between the subwoofer and the main speakers.
PHASE
This switch reverses the polarity of the system. Depending on the placement of the SWA1501 subwoofer relative to the full- range speakers, you may get a better
POWER Indicator
When the POWER switch is turned on and the linecord is connected to an active
| LIMIT | SIGNAL |
| THERMAL | POWER |
| PARALLEL |
| SUBWOOFER | HIGH PASS | |
| THRU | FULL RANGE |
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| CONTROL | (MID/HIGH FREQ) | ||
| (FULL RANGE OUTPUT) | INPUT |
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| OUTPUT |
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| NORMAL | 120Hz |
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| L |
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POWER | ON |
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| SUBWOOFER |
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| IN |
| LEVEL | OUT |
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SWA1501 |
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| R | NORMAL | R |
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ACTIVE SUBWOOFER |
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| REV 180 |
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| PHASE |
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CONCEIVED AND DESIGNED BY MACKIE DESIGNS INC, WOODINVILLE, WA, USA AND MACKIE EUROPE |
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• MADE IN ITALY • COPYRIGHT ©2000 • THE FOLLOWING ARE TRADEMARKS OR REGISTERED |
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TRADEMARKS OF MACKIE DESIGNS INC.: "MACKIE", AND THE "RUNNING MAN" FIGURE • PATENT PENDING |
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