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<blockquote data-quote="Goldy" data-source="post: 6702000" data-attributes="member: 619858">Hello,I&#039;m new here i had built a few enclosures recently and now i want to build a box specially for Bass races, my car has a resonant frequency of 47Hz and last time&nbsp; with a 700W amp and a Linear response drive around box I got 136dB&#039;s at 47hz. I simulated a box design in WinISD that has a Gain at 47Hz of +12db.. would this mean that in a bassrace in real life im going to get 136dB+12dB?Can anybody help me with this because I really dont want to build the box if its going to be useless for dB races.This was the box i simulated in WinISD + couple of extra details:Driver&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; : Spl dynamics xtr 300d2Vas : 42.7Qts : 0.45Fs : 31.70SPL : 86.60--Number of drivers : 1Box type&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; : 4th Order BandpassBox size&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; : Front chamber 2,82 Ft3Rear Chamber 1,58 Ft3Tuning frequency&nbsp; : 46.50 HzVent&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; : 1 vent(s)&nbsp; -&amp;gt; Front Chamber14,5in length for each6,7 x 6,7 in rectangleBox internal dimensionsW - 16,5 inD - 16,5 inH - 26,8 inL1 - 17 inL2 - 9,6 inCan anybody help me about this problem?Would this enclosure perform well at 47Hz?Or can you suggest any changes to it?Thank you!</blockquote>

[QUOTE="Goldy, post: 6702000, member: 619858"] Hello, I'm new here i had built a few enclosures recently and now i want to build a box specially for Bass races, my car has a resonant frequency of 47Hz and last time with a 700W amp and a Linear response drive around box I got 136dB's at 47hz. I simulated a box design in WinISD that has a Gain at 47Hz of +12db.. would this mean that in a bassrace in real life im going to get 136dB+12dB? Can anybody help me with this because I really dont want to build the box if its going to be useless for dB races. This was the box i simulated in WinISD + couple of extra details: Driver : Spl dynamics xtr 300d2 Vas : 42.7 Qts : 0.45 Fs : 31.70 SPL : 86.60 -- Number of drivers : 1 Box type : 4th Order Bandpass Box size : Front chamber 2,82 Ft3 Rear Chamber 1,58 Ft3 Tuning frequency : 46.50 Hz Vent : 1 vent(s) -> Front Chamber 14,5in length for each 6,7 x 6,7 in rectangle Box internal dimensions W - 16,5 in D - 16,5 in H - 26,8 in L1 - 17 in L2 - 9,6 in Can anybody help me about this problem?Would this enclosure perform well at 47Hz? Or can you suggest any changes to it? Thank you! [/QUOTE]

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