Reply to thread

Message

<blockquote data-quote="82 cutlass" data-source="post: 7205954" data-attributes="member: 561239">I came up with this for 4 12&#039;s . It&#039;s 11 cubes I don&#039;t want to go any bigger . I want to save some room for the air ride stuff . If i do 4 12&#039;s it&#039;s going to be a 3 chamber bandpass . Should I separate each woofer in it&#039;s own box or will 2 sharing the same side be ok ? This is my first multiple sub bandpass...wanna make sure i do it right .Number of drivers : 4Box type&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; : 4th Order BandpassBox size&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; : Front chamber 6.000 ft^3Rear Chamber 5.000 ft^3Tuning frequency&nbsp; : 50.00 HzVent&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; : 1 vent(s)&nbsp; -&amp;gt; Front Chamber10.52 in length for each24.00 x 5.00 in rectangleRelativeFreq&nbsp; &nbsp; &nbsp; &nbsp;&nbsp; Gain&nbsp; &nbsp; &nbsp; &nbsp;&nbsp; SPL[Hz]&nbsp; &nbsp; &nbsp; &nbsp;&nbsp; [dB]&nbsp; &nbsp; &nbsp; &nbsp;&nbsp; [dB]20.00&nbsp; &nbsp; &nbsp; &nbsp; -16.28&nbsp; &nbsp; &nbsp;&nbsp; 112.5025.00&nbsp; &nbsp; &nbsp; &nbsp; -10.61&nbsp; &nbsp; &nbsp;&nbsp; 118.1730.00&nbsp; &nbsp; &nbsp; &nbsp; -5.11&nbsp; &nbsp; &nbsp; &nbsp; 123.6735.00&nbsp; &nbsp; &nbsp; &nbsp; -0.09&nbsp; &nbsp; &nbsp; &nbsp; 128.7040.00&nbsp; &nbsp; &nbsp; &nbsp; 2.45&nbsp; &nbsp; &nbsp; &nbsp;&nbsp; 131.2345.00&nbsp; &nbsp; &nbsp; &nbsp; 2.07&nbsp; &nbsp; &nbsp; &nbsp;&nbsp; 130.8550.00&nbsp; &nbsp; &nbsp; &nbsp; 1.11&nbsp; &nbsp; &nbsp; &nbsp;&nbsp; 129.8955.00&nbsp; &nbsp; &nbsp; &nbsp; 0.38&nbsp; &nbsp; &nbsp; &nbsp;&nbsp; 129.1660.00&nbsp; &nbsp; &nbsp; &nbsp; -0.13&nbsp; &nbsp; &nbsp; &nbsp; 128.6565.00&nbsp; &nbsp; &nbsp; &nbsp; -0.57&nbsp; &nbsp; &nbsp; &nbsp; 128.2170.00&nbsp; &nbsp; &nbsp; &nbsp; -1.09&nbsp; &nbsp; &nbsp; &nbsp; 127.7075.00&nbsp; &nbsp; &nbsp; &nbsp; -1.77&nbsp; &nbsp; &nbsp; &nbsp; 127.0180.00&nbsp; &nbsp; &nbsp; &nbsp; -2.66&nbsp; &nbsp; &nbsp; &nbsp; 126.1285.00&nbsp; &nbsp; &nbsp; &nbsp; -3.71&nbsp; &nbsp; &nbsp; &nbsp; 125.0790.00&nbsp; &nbsp; &nbsp; &nbsp; -4.88&nbsp; &nbsp; &nbsp; &nbsp; 123.9195.00&nbsp; &nbsp; &nbsp; &nbsp; -6.08&nbsp; &nbsp; &nbsp; &nbsp; 122.70100.00&nbsp; &nbsp; &nbsp;&nbsp; -7.29&nbsp; &nbsp; &nbsp; &nbsp; 121.50</blockquote>

[QUOTE="82 cutlass, post: 7205954, member: 561239"] I came up with this for 4 12's . It's 11 cubes I don't want to go any bigger . I want to save some room for the air ride stuff . If i do 4 12's it's going to be a 3 chamber bandpass . Should I separate each woofer in it's own box or will 2 sharing the same side be ok ? This is my first multiple sub bandpass...wanna make sure i do it right . Number of drivers : 4 Box type : 4th Order Bandpass Box size : Front chamber 6.000 ft^3 Rear Chamber 5.000 ft^3 Tuning frequency : 50.00 Hz Vent : 1 vent(s) -> Front Chamber 10.52 in length for each 24.00 x 5.00 in rectangle Relative Freq Gain SPL [Hz] [dB] [dB] 20.00 -16.28 112.50 25.00 -10.61 118.17 30.00 -5.11 123.67 35.00 -0.09 128.70 40.00 2.45 131.23 45.00 2.07 130.85 50.00 1.11 129.89 55.00 0.38 129.16 60.00 -0.13 128.65 65.00 -0.57 128.21 70.00 -1.09 127.70 75.00 -1.77 127.01 80.00 -2.66 126.12 85.00 -3.71 125.07 90.00 -4.88 123.91 95.00 -6.08 122.70 100.00 -7.29 121.50 [/QUOTE]

Verification