Read JBL ESC 550 Source (serv.man4) Service Manual online
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Powered Subwoofer
BASS550
FEATURES
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The Bass550 powered subwoofer is part of the ESC550
System.
System.
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Amplifiers for five satellite speakers and subwoofer.
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100 watt output.
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Variable level control.
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Line level input exclusivelyfrom the “Source”.
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User friendly“auto on” circuit. Signal sensing
automaticallyturns the subwoofer on so you don't have
to; the subwoofer is meant to be left “on” without
continuallyusing the power switch.
automaticallyturns the subwoofer on so you don't have
to; the subwoofer is meant to be left “on” without
continuallyusing the power switch.
TEST PROCEDURE
Equipment needed:
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The “Source” AM/FM turner/CD player w/ remote control.
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Function/signal generator/sweep generator.
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Multimeter.
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Cable - Phono plugs (RCA) and speaker cables.
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RCA Y-cable
Subwoofer, General Function
1) Connect both right and left phono jack (RCA) inputs
to signal generator and the “Source” Tape/Aux. input
jacks. Use Y-cable if necessaryfrom mono source.
jacks. Use Y-cable if necessaryfrom mono source.
2) Connect Bass550 subwoofer to the “Source” with
supplied 13 pin Din cable.
BASS550 POWERED SUBWOOFER TEST SETUP
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