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Dual Titanic Mk III with 1 kW of power

post #1 of 5
Thread Starter 
I'm building a subwoofer for some friends of mine who own a small art film theater. I'm using two 15 inch Dayton Titanic mark IIIs and two 500 W Bash amps. I was planing on building a box approximately 19-20 ft^3 ported and tuned to 19 Hz.

I noticed on the Q&A section for this driver of Parts Express that a couple people feel that a box this big is too large for the driver. They seem to think that a 5.25 ft^3 per driver ported box is good for this particular woofer. I don't honestly understand why. As far as I can tell the performance looks worse in a box that small. With a smaller box the f3 would be higher and the group delay is higher above 23 Hz. Excursion is higher in the larger box but well within reasonable limits with the 1 kW of power that I'm using. Am I missing something or are these guys up in the night?
post #2 of 5
10 ft3, 500 watt, 20hz tune per driver is actually ideal. How big is this theater? You might want something with more output capability.
post #3 of 5
Thread Starter 
about 450-500 square feet. It's a very small art film theater.
post #4 of 5
Thread Starter 
Thank you Jay, that's what I thought. I have no idea why they thought 5.25 ft^3 was better.
post #5 of 5
Quote:
Originally Posted by Gibby Travis View Post

Thank you Jay, that's what I thought. I have no idea why they thought 5.25 ft^3 was better.
One reason could be if you took cabin gain and boundary loading into account that could allow you to use a smaller box without giving up anything. You'd have to confirm with them what their thoughts were.
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