Originally Posted by Blackmambakila
The receiver i got has mcacc but doesnt eq the subs and i didnt realize that until now so im trying to see a simple way of doing it using the same receiver. Its a pioneer elite sc71. Im going to intregate 2 subs so ill be running a 5.2 setup and i wanna make sure the subs are to full potential, also this is my first ht setup so im pretty new to all this but so far i like what ive got until i see other things out there that are better
I too got dual subs and until recently I was using a Pio 1020 -- basically the same as the Elite VSX-30. I too was a bit miffled that MCACC doesn't bother with the subs. However Advanced MCACC does an okay job with the other speakers (in my room, the differences with respect to MultEQ XT32 are small). EQing the subs however does bring very noticeable changes to the table IMHO.
With a Pioneer receiver, the easiest way to do it would be with an automated solution, such as the discontinued Velodyne SMS-1 and SVS AS-EQ1, and the Antimode products. Of course these solutions are the most expensive. Switching to a receiver equipped with Audyssey MultEQ XT or XT32 is also an option, given the price of these devices. Note that the SVS AS-EQ1 actually uses Audyssey MultEQ XT32.
Note that dual subs can be EQed as a pair without any problem. If the subs are not equidistant to the listening position, you can adjust their phase (and levels) first, and then simply treat them as a single sub. Independent phase / distance and level adjustments for dual subs is relatively easy manually, but can be automated in more premium products (Audyssey SubEQ HT-equipped receivers, the aforementioned Antimode 2.0 Dual Core).
The budget solution for EQing subs (single or duals) traditionally was the Behringer DSP1124P "Feedback Destroyer", aka "BFD". This is a relatively cheap piece of equipment (circa $100) that is not meant for home theater usage but can do the job. There are extensive howtos on how to use the BFD as a sub equalizer. However, for marginally more, you can purchase the MiniDSP 2x4, which can basically do the same in a much more user-friendly environment. Both the BFD and MiniDSP, however, require the user to manually set correction filters. The easiest way to generate those is to take a measurement of the frequency response with REW (REW is free, but this requires purchasing a mic and/or SPL meter, also circa $100). REW is able to generate the correction parameters for both the BFD and the MiniDSP, and can directly upload those.
In particular, the MiniDSP can independently adjust distance/delay (and levels) for all its outputs, so it's relatively easy to adjust those for dual subs, given a mean to measure the results.