I have a Sony SA-HE70 receiver. My house came with built in speakers but the sub woofer is passive. The the SA-HE70 has a subwoofer output designed for a powered subwoofer. I currently have the subwoofer connected to the receiver conventionally but the SA-HE70 has a 100hz roll off on the non-subwoofer channels so I don't get full bass. Could I run the subwoofer output through a cheap amp dedicated to powering the subwoofer?
Look at www.partsexpress.com . They have some sub amps with cross over, inputs, etc. If your a DIY guy you could mount one of these in a box, in the wall near the sub, or maybe in the sub cabinet itself.
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