TwinTurbo.NET: Nissan 300ZX forum - OK, not USAC or IASCA sanctioned.
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Subject OK, not USAC or IASCA sanctioned.
     
Posted by Jeff_94 on June 04, 2003 at 9:10 PM
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In Reply To How can you say it wasn't to regulations... posted by zum on June 04, 2003 at 12:25 PM
     
Message IASCA places the mic 4" from the glass at a certain height.(can't remember right now) and I believe USAC places the mic generally where the listener's head would be. I can think of no Sanctioning body that places the mic UNDER the dash. There is no logical reason(other than boosting SPL numbers) for placing the mic down there. Given 2 12's, 400 watts and the interior volume of a Z I would agree with SLOTH saying mid to low 130'sDB. I personally hit 141.1DB with 2 JBL 12's 600watts(rockford fosgate) in an old Nissan Sentra(smaller interior) but that was IASCA and I used Flashdance with an Audio Control SPL meter. The box and car was tuned for SPL and Flashdance "tricks" the Audio Control SPL meter.

     
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