Originally Posted by Smigro
Thanks for the info. I did not know that the the PEQ controls were used to cut instead in boost...good to know.
Two more questions though. What mic would you suggest and where can I get his Stereophile test-tone CD? Is this a CD that you burn or one that you buy at a store? Also, if I get a measuring mic would I also need a program like REW to do this? I only ask because I do not have a laptop ATM (hoping to get one with tax return money) so if one is needed this may be something I put off until I get a laptop. Would I be able to do just a basic spl meter to do this or are they not accurate enough for this kind of work.
You can boost a sub SLIGHTLY with PEQ (I was exaggerating for effect!), but not if the dip in the curve is caused by a null. Boosting a room null costs you enormous amounts of amp power and driver excursion, and buys you nothing (the null eats all the power you throw at it, as the driver valiantly tries to reproduce that which the room will not allow---at least not in it's position in that room, and perhaps not at all, depending on the room). To understand acoustics better than we have space for here, get a book on the subject (Harry F. Olson wrote a good one).
The Stereophile CD is available on their website, and SPL meters are available at any good electronics store (even Guitar Center sells 'em!). For a measuring mic, look at the DSP website. They have a great Sub-EQ that measures and corrects for frequency and time-domain problems; the mic that comes with their EQ is available separately.
By the way, if you really want to EQ your sub (or your whole system), Behringer has a few different Parametric Equalizers that allow one to have a lot of PEQ frequencies, not just the one or two that are available on some of the better subs. Like yours!Edited by BDP24 - 1/21/13 at 8:09am