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can I run 2 subs in my surround setp? any quality loss?

post #1 of 4
Thread Starter 
I currently have a nice entire set of Infinity Alpha speakers including their nice 500w subwoofer which I LOVE! I have been toying with the idea of buying a 2nd sub to put behind to couch to "feel" the bass a little more because my new apartment setup I found has lessened the large impact my sub used to make in the smaller bedroom it used to be in. I thought I read before that having 2 subs is fine (use a y-splitter cable from sub out on receiver). But my second question is, if I buy a cheaper sub for behind the couch, is it going to lessen the quality of sound by competing with my nice Infinity sub?

There is an auction on ebay right now from a guy selling the sub that comes with the Polk Audio RM9600 ( or is it 6900?) series speakers for pretty cheap. It is very thin (similar to the size of a bose acoustimass sub) which would fit nicely behind the couch.

Any thoughts?
post #2 of 4
Have you calibrated your current set-up? If not, I would suggest you do that first before considering whether to add another sub (and it's cheaper).

Adding a second sub can be a good thing, but with some caveats. One is that you're dealing with good subs in the first place (I'm not familiar with the specific models you described). A single good performing sub (and sized adequately for your room) is going outperform two lesser subs. Combining subs can help smooth out the frequency response in your room, but that typically entails calibrating both subs - which can be very difficult with two different subs, vs. two identical subs. Based only on your description of the subs (nice Infinity sub, cheap Polk sub), if you're set on buying another sub, I would consider another Infinity first (assuming you've done the calibration on your current set-up and know you've got issues that might be solved with another sub). Hope that helps.

Ross
post #3 of 4
Most knowledgeable techs recommend not mixing dissimilar subs. IMO you need to find out exactly what accounts for the "lessened impact". You might find that there was a resonance in the smaller room that is not present in the larger one.

You can try increasing the level of the sub or repositioning the sub or both to get more "impact". Try that before investing in a 2nd sub. If you decide to go for a second sub my recommendation is to by an identical one to the one you have and collocate them.
post #4 of 4
Quote:
Originally Posted by BrianEK View Post

I have been toying with the idea of buying a 2nd sub to put behind to couch to "feel" the bass a little more

Maybe you should consider a buttkicker LFE instead to really "feel" the bass kicking and thumping instead of a 2nd sub.

Buttkicker kit on Amazon
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