mismatched voltage specs - AVS Forum | Home Theater Discussions And Reviews
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post #1 of 1 Old 01-10-2007, 11:28 PM - Thread Starter
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I have a Harman Kardon speaker system for my desktop PC which rarely gets any use. It includes a rather large subwoofer (at least it's large as computer speaker systems go). I'm thinking the subwoofer would make a nice addition to my small home theater system. It's rated at 40 watts.

Although my yamaha amp has an output for a powered subwoofer, the level specs don't match. The subwoofer out on my amp is rated at 4 Volts (1.2k ohms) and the input sensitivity on the subwoofer is only rated 400 mV RMS with an input impedance of > 5k ohms.

Is it ok to just drop the output signal using a properly sized variable potentiometer?

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