I have a 2000 BMW Z3 which just recieved a 6.5" kicker sub in each kick panel (in the actual sheet metal). The enclosures are sealed up, dynamatted, etc. The speakers are facing directly at each other (nevermind the dash, console and trans hump being in between the two) and I'm wondering if I'm getting some cancellation. I tested the system with 1 sub and it had some good thump to it. But when I added #2, it didn't really increase the output of the bass... maybe even went down.
I have a calibration mic and I'm going to setup a recording session that travels the low frequencies with a sine wav to see where my peaks and valleys in the frequency spectrum are but I won't be able to get to that for some time. Does anyone have experience with a similar setup? I know they are 'in phase' with each other as far as polarity goes but I'm wondering if I am getting some kind of comb filtering... Thoughts? Suggestions? How could I fix this? Is there an add on unit with a phase sweep or atleast 0, 90, 180, 270 that I could apply to one sub?
Lastly, the specs: Profile AP400 (I know, pretty crappy, but fine for now) running 2 Kicker CVT6.5" 2-ohm subs in parallel (4 ohm load on the amp).
I have a calibration mic and I'm going to setup a recording session that travels the low frequencies with a sine wav to see where my peaks and valleys in the frequency spectrum are but I won't be able to get to that for some time. Does anyone have experience with a similar setup? I know they are 'in phase' with each other as far as polarity goes but I'm wondering if I am getting some kind of comb filtering... Thoughts? Suggestions? How could I fix this? Is there an add on unit with a phase sweep or atleast 0, 90, 180, 270 that I could apply to one sub?
Lastly, the specs: Profile AP400 (I know, pretty crappy, but fine for now) running 2 Kicker CVT6.5" 2-ohm subs in parallel (4 ohm load on the amp).