Difficulty integrating two different subs
Using REW and a miniDSP 2x4, I have been trying to integrate two subs into my system using AustinJerry’s miniDSP guide. The two subs I am using are a PSA V1500 and a Paradigm PW-2200.
So far, I have not been able to produce a frequency response with the two subs running that is better than what I get when running a single sub, with one exception. On one occasion, with the two subs set-up in specific locations, running both at the same time, after setting proper delays using the Audyssey method, I was able to achieve a very smooth frequency response (the best I’ve had – it didn’t have any major valleys). However, when going through the impulse response step in the guide, it indicated that my subs were out of polarity. Which was surprising to me because the frequency response I was getting was very smooth. If the subs were out of polarity, I would have expected to see a few peaks and/or valleys in the frequency response.
After inverting the polarity of the first sub (as per the guide), it now showed my subs in the same polarity. But this ended up vastly worsening the frequency. By a mile. All of a sudden, I had all sorts of valleys (none of which I had in the previous measurement before reversing the first sub’s polarity). I was surprised at this result because I thought this is the type of graph I might get if my subs were running out-of-phase, not in-phase.
One thing to note is that the PSA has a front-facing port, whereas the Paradigm has a rear-facing port. Could this be contributing to the difficulties I’m having integrating these two?