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Enclosure Design & Construction
4th order builder needs HELP!!
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<blockquote data-quote="Goldy" data-source="post: 6702000" data-attributes="member: 619858"><p>Hello,</p><p></p><p>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?</p><p></p><p>Can anybody help me with this because I really dont want to build the box if its going to be useless for dB races.</p><p></p><p>This was the box i simulated in WinISD + couple of extra details:</p><p></p><p>Driver : Spl dynamics xtr 300d2</p><p></p><p>Vas : 42.7</p><p></p><p>Qts : 0.45</p><p></p><p>Fs : 31.70</p><p></p><p>SPL : 86.60</p><p></p><p>--</p><p></p><p>Number of drivers : 1</p><p></p><p>Box type : 4th Order Bandpass</p><p></p><p>Box size : Front chamber 2,82 Ft3</p><p></p><p>Rear Chamber 1,58 Ft3</p><p></p><p>Tuning frequency : 46.50 Hz</p><p></p><p>Vent : 1 vent(s) -&gt; Front Chamber</p><p></p><p>14,5in length for each</p><p></p><p>6,7 x 6,7 in rectangle</p><p></p><p>Box internal dimensions</p><p></p><p>W - 16,5 in</p><p></p><p>D - 16,5 in</p><p></p><p>H - 26,8 in</p><p></p><p>L1 - 17 in</p><p></p><p>L2 - 9,6 in</p><p></p><p>Can anybody help me about this problem?Would this enclosure perform well at 47Hz?</p><p></p><p>Or can you suggest any changes to it?</p><p></p><p>Thank you!</p></blockquote><p></p>
[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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4th order builder needs HELP!!
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