strykeSite Admin
Joined: 24 Sep 2002
Posts: 476
Location: Green Bay WI
Posted: Mon Jul 11, 2005 5:03 am Post subject:
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The AV12's are not what you'd want for SPL competition. Unfortunately most companies don't have it right when it comes to offering woofers for SPL. Since you are going to burp at or around the tuning frequency, and up higher in frequency, the woofer really doesn't need to move much. It needs to excite the resonance of the port as much as possible. To do this you want lots of motor strength and more cone area. Something like a Lambda TD15H is a great option. The efficiency is in the 94-95dB range at 1W, phase plug gives lots of heatsinking, copper faraday for low distortion, you have more cone area with a smaller surround, etc.
More than anything though you need to know the transfer function of your car. You need to tune to where you have the most cabin gain. A single TD15H with 300W can easily get you in the 155dB range or higher depending on vehicle.
The AV woofers are more just a general everyday use woofer.
John
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