Speaker Placement or Room

I meant to say, the dip is betwen 80hz & 125hz

Most likely you can correct much of this through placement. Sometimes there are rooms that do not support certain wavelengths and without analyzing the dimensions it would be impossible to know, but likely you are getting a cancelation due to placement.

Here is our resource page. On the right side you'll see an article on loudspeaker placement. Hopefully this will help you some.

While it may be obvious, what the hell!

Don't forget that where your listening seat is located can play a huge difference. Especially if you've got it sitting in a null. Play with both speakers and listening position. For example, with your test disc playing, stand at the present listening position and when a 100hz signal (or any signal) plays move the meter back and forward a foot or so and see what happens. You might be surprised. Take your time, make lots of notes and graphs as you go.

BTW, FWIW I find it easier to use a disc with pink noise such as those available thru Stereophile than the Rives disc with its 'constant tone'. I just factor in the corrections for the errors in the RS meter.

FWIW, The Cara program on Rives site is an excellent starting point, it hit my speaker locations perfectly, but missed my listening position by a foot or so.

Newbee-
While I did know to check my seating position, I completely forgot to. I'll have to play around some more later.

Why would pink noise be any different than the constant tone?

Thanks