Need help with 7.2 set up

[yellowblanket]

ok so i have an extra subwoofer laying around, i thought why not just hook up 2 subs to one receiver. Now do i need a Y split cable (1male to 2 females)? is that the best way or is there any idea that you would recomended?
Thanks =)

[crackinhedz]

I dont know about your sub, but mine has an "out" on it...no need for y cable, does yours have an out.

[yellowblanket]

i have the Klipsch 12" sub
doesn't have an out it just have left LFE and right

by the way, i still dont know which one should i put the rca in, the left LFE or the right. I got an rca from my receiver to the left LFE right now and it's working fine.

[WickyWoo]

I believe you need to run a seperate subwoofer amp to accomplish this

If I had to guess, you'd plug the RCA into the left mono ins of the amp, and then plug the subs into the headphone out or something, using a splitter off of a stereo 1/4"

Don't take that as gospel though, I really don't know

[MouseRider]

The reason why you have a LEFT/LFE and RIGHT is because your sub is probably designed both for music systems as well as home theaters.

For music systems which doesn't have a dedicated subwoofer out, you would hook the standard stereo outputs for LEFT and RIGHT into the sub and the sub has a low-pass filter on it.

When using with a home theater system or a system with a dedicated sub out, it will most typically be a mono output that you'd connect to the LEFT/LFE port.

It's basically equivalent to some systems which label them as LEFT(MONO) and RIGHT.

If your receiver/pre-amp doesn't specifically support stereo subs, you're not going to get much more except, well, potentially more volume if your subs are self-powered.

You might actually get some interference problems with two subs if your receiver/processor doesn't do bass management for more than one sub.

I have a 7.3 system and a processor that is designed to handle bass management for 3 subs, it basically provides for L/SUB, R/SUB and LFE. The L/SUB and R/SUB provide 80Hz and below coverage for my main L and R which is crossover-ed at 80Hz as they are THX.

[yellowblanket]

^ thanks, yeah i think i'll just leave it at one sub for now.
btw, is it wise to put a sub in the middle of the room? because my sub is firing downward

[MouseRider]

Originally Posted by yellowblanket

^ thanks, yeah i think i'll just leave it at one sub for now.
btw, is it wise to put a sub in the middle of the room? because my sub is firing downward

By "firing downward", I assume that you mean that the cone in the subwoofer is pointing down and it's probably ported out through on one or more sides.

Sub positioning as a lot to do with your room's characteristics (i.e. dimensions). This is mainly because of a problem known as "standing waves" which is a problem associated especially with low frequencies.

It's best to put your sub near to your main speakers. While low frequencies are often considered to be non-localized, actual practice may defer depending on several factors.

If you put it in the middle of the room, you're probably going to get the "weakest" sounding bass as compared to putting it close to a wall where you're going to get a boost from the wall or walls. You'll get the most BOOM if you put your sub in a corner.

This article might be helpful:
http://www.polkaudio.com/education/article.php?id=20