0dBfs on a properly calibrated subwoofer should theoretically equal 115dB, I generally watch movies very close to or at reference level. I'm currently using a Dayton sub 1500 in a 20x14 room. At a distance of 12', the maximum spl I've measured is 105dB. It seems I'm limited by xmax rather than power since attempting to exceed 105dB causes the vc to hit the pole piece. I'm considering getting a second sub and stacking it on top or placing it directly beside it, however this will only give me an extra 6dB. Corner placement might yield another 6dB, but that'd also mess up the in room response, which is flat +-5dB at the MLP with some mild equalization.
The other, more. Complicated option, would be to replace the driver with one with more xmax. The cabinet is approximately 3 cubic feet with a port tuning frequency of 23hz, so I could simply find a driver that would play well with the existing dimensions.
Spending several grand on a large, powerful sub is out of the question as it's way out of my budget. The dayton is probably the biggest and most powerful sub out there for under $500, and I really have no complaints about it.
Should I just add a few more subs or does anyone have another suggestion?
I have also considered using pro audio subs, however the majority of those begin rolling off at 40hz if you're lucky. The dayton is -3dB at 23hz and extends -6dB to 19hz.
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