Two Sub-Woofers and one 7.1 Receiver Question - AVS Forum
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post #1 of 4 Old 12-01-2013, 07:33 AM - Thread Starter
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I have Harmon Kardon 3650, which is 7.1 system. I bought a used Polk surround speaker set that included a powered sub-woofer. I already had a powered sub-woofer, but wanted the other speakers to upgrade my system. So now I've got an extra powered sub woofer and I've got a newbie question. Can I hook up my two sub-woofers in parallel so the one signal from my receiver drives both? Should I - does having the second sub-woofer buy me anything in sound quality? FYI, I can separate one sub-woofer toward the front of my room and place the second near the back. FYI, my room is octagonal shaped and it measures 19' from flat wall to t flat wall. Thanks.
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post #2 of 4 Old 12-01-2013, 07:51 AM
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Quote:
Originally Posted by fatcat220 View Post

I have Harmon Kardon 3650, which is 7.1 system. I bought a used Polk surround speaker set that included a powered sub-woofer. I already had a powered sub-woofer, but wanted the other speakers to upgrade my system. So now I've got an extra powered sub woofer and I've got a newbie question. Can I hook up my two sub-woofers in parallel so the one signal from my receiver drives both? Should I - does having the second sub-woofer buy me anything in sound quality? FYI, I can separate one sub-woofer toward the front of my room and place the second near the back. FYI, my room is octagonal shaped and it measures 19' from flat wall to t flat wall. Thanks.

In most circumstances you will reap a benefit from using two subs. If they are relatively similar in capability, you definitely want to use them both. Positioning them for maximum effect is a bit of a complex issue. It'll help if you could post some info about both subs.

Find out more about Mark Henninger at www.imagicdigital.com
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post #3 of 4 Old 12-01-2013, 08:41 AM
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All you need is a Y cable like this. Most 7.2 receivers have an internal Y cable so it wouldn't be any different.
http://www.amazon.com/RCA-AH25-Y-Adaptor-Cable/dp/B00005T3G9/ref=sr_1_15?ie=UTF8&qid=1385915981&sr=8-15&keywords=subwoofer+Y+cable

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post #4 of 4 Old 12-01-2013, 10:35 AM - Thread Starter
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Hi Guys, thanks for the help.

Imagic, I've got one Velodyne 10" VX-10B and one Polk 10" PSW10 sub-woofer. Both have low pass freq. adjustments (Velodyne:n50-200Hz, Polk: 80-160Hz), volume control, and a 0-180 phase toggle switch. Can you give me any guidance on setting the two up so the play nice with each other?

Afrogt, thanks for the Amazon link.
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