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Can you power a passive subwoofer?

413 Views 4 Replies 4 Participants Last post by b curry, Jan 18, 2004

shawn67

Discussion Starter · Jan 18, 2004

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?

Thanks for your advice

Shawn

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fredsal2

· #2 · Jan 18, 2004

Yes. Make sure you use an amp with sufficient power, subwoofers tend to be hungry.

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shawn67

Discussion Starter · #3 · Jan 18, 2004

Thanks for the quick response...what kind of wattage do you recommend?

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hometheaterguy

· #4 · Jan 18, 2004

The top dog SVS subs are passive and require a Crown, or QSC power amp that is 4000 watts bridged mono. You do need much more power than the receiver as Fred mentioned.

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b curry

· #5 · Jan 18, 2004

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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