I currently have a PSA XS15 (sealed) and a ED A2-300 (ported). I was going to get rid of the A2-300, but I decided to try and add it to the system since I'm able to localize the XS15 at times. I think this is because I sit about 8' away from the sub and my display. I was hoping the A2-300 would help diminish some of the localization. I currently have an Onkyo TX-NR818 with a crossover set to 80 Hz. My mains are Ascend Acoustic CMT-340 SEs.
My issue: I can still localize each sub at times.
Here is how I've set everything up:
1. Gain matched the subs (middle of room using SPL meter. Both subs and mic in the same place).
2. Used REW to place the XS15
3. Added in the A2-300 and used REW to find the spot with the smoothest response (every place had some kind of null).
4. Set phase on the A2-300 to approximately 160 degrees (this gave me the smoothest response)
5. Run Audyssey XT 32 (NO SUB EQ HT on my Onkyo)
I'm guessing my issue has to do with messing with the phase on the A2-300. The XS15 actually has a smoother overall response in my room. Adding the A2-300 created a decent null around 30Hz and 50Hz. Adjusting the phase got rid of both nulls, but I'm afraid it is causing my localization problem again.
Audyssey states that I should leave the phase at 0 on both subs, but the null at 30Hz is so big that I don't think XT32 can fix it. I've read that Audyssey can adjust smaller drops and spikes, but not a null like the one created by the A2-300.
Am I fighting a losing battle trying to integrate the A2-300? I know integrating a non matching sub is a challenge, but I thought I may be able to get things good enough for my listening tastes. Am I improperly adjusting the phase?
Any help is extremely appreciated. I've read and researched a ton. Ultimately, I realize another XS15 may be my best option, but I'm not ready to go there just yet.