Axiom Home Page Forums General Discussion Advice from Axiom Owners Just got the QSC and here's what happened!

Well i think it is more the fact i have never used one before. So setting it up could be a problem, as far as volume matching. Plus may have to do with the source CD's...as i may feel that i need to just jump up and turn it down.

I gather you don't like the Klipsch products. I looked at the Velodyne impact 12 but did not like the speakers connections.
I'm not looking to spend more then $350 for this.
I'm not looking for massive overkill bass. However and for what ever reason, be it the room, of the fact of the 12" front fireing speaker in the Polks, there is a difference in the bass.
I'm just looking to replace what "I" feel is missing, nothing more.

what i would suggest is that you make careful Fr. resp. measurements of your M80s at different positions until you get good (flat) freq. response in the lowest frequencies;
when you move the speakers, try not to move them more than 3 inches at a time, and make logarithmic graphs of the results.

try 3 inches away from the front wall (that will be an effective distance of 19.5 ins. from the speaker's front to the front wall), and for the distance from the side wall, make sure it's not a multiple of the other distances (woofer to floor / woofer to front wall).
always measure distances from the center front of the speaker box.
when you have found the best position, then see if the bass satisfies you. if not, then choose a sub that will supplement the missing frequencies, at least down to 20 Hz.

i would be surprised if you can find a sub that will give you -3dB at 20 Hz (with sufficient SPL capability) for $350.
you also have to look for a sub that sound "musical", and not like a boom box.

hope this helps. :-)

You won't find any sub under at least $1000 min that will put out meaningful output at 20hz. And that "in your chest" punch or "slam" as some call it is well above that, more in the upper bass region.

I would look at those for a start:
http://www.hsuresearch.com/products/stf-2.html
http://www.outlawaudio.com/products/lfmcompact.html
http://www.edesignaudio.com/product_info.php?cPath=2_41&products_id=406
http://www.edesignaudio.com/product_info.php?cPath=2_41&products_id=892
Although, I am not sure that in this price range you'll find a sub that will offer much more that the M80s unless of course you run them a few dB hot and at the volume that you seem to be listening, I am not sure they can even keep up.

I would also check the used market (I use Audiogon.com) for your price range. I did notice a Sunfire sub listed for $400 that might be a place to start.

Well this is a strict 2 channel stereo system, so i have no fr respose meter. I will try them at 3" off the wall, see what that dose. Altho i feel with the back ports the ceiling may be sucking this up somehow. It's a very long room about 28 feet.
There is also an open doorway on the left side...

But i will give it a try..see if that works.

Sorry guys, the M80's are going back. Besides the fact i had to pull all the tweeters and reclamp all the connections, the right speaker has something wrong with one of the bass drivers..It's not an out right pop..but it's there. and only happens with the right speaker. Just too much for me to deal with, on new speakers. I'm not sure whats wrong....but, i'm done.

very rare, but unfortunate.

Good luck to you in finding what you're looking for.

Let us know what you end up going with. We're always on the lookout for stuff that sounds good.