sittingheavy Posted June 10, 2015 Report Share Posted June 10, 2015 Hey Guys, I'm trying to build a strictly burp box for a 2011 toyota sienna. I'm currently running a 15-cm15d4 memphis mojo on a hifonics hercules amp. The sub is in a prefab 4ft3 vent, no clue on tuning. I'm hitting 138 on the windshield on a termlab. I have plenty of room in the trunk, like 14ft3. We tested the res frequency with a sealed 12 and seem to be peaking out around 55hz. What should I be tuning the box to? I've mocked up a few boxes in winisd and really have no clue what looks good based off of what I need. Any insight would be appreciated. Thanks Guys Link to comment Share on other sites More sharing options...
NorCal SPL Posted June 12, 2015 Report Share Posted June 12, 2015 if you want a pure burp box, try tuning at around, id say 48. see what happens. keep box small and about 12 inches of port area per cube www.LowHertzCarAudio.com IG: LowHertzCarAudio Facebook: Low Hertz Car Audio www.lowhertzcaraudio.com 2015 Top Dog Champion Limitless Lithium West Coast Warehouse Link to comment Share on other sites More sharing options...
sittingheavy Posted June 16, 2015 Author Report Share Posted June 16, 2015 I can't seem to get a box to mock up properly in winisd. After messing with it the past couple days, trying to get the port area almost equal to sub cone area, this is what came out. Box is measuring 32"x36"x20" with the vent measuring 18.5" long x 10" wide x 11.2" deep. After vent and sub displacement, the box is coming out at 9.67^ft3 and tuned at 47.95hzSub and vent will be on top and at opposite ends of each other. Does this sound reasonable? Link to comment Share on other sites More sharing options...
g2shuck Posted June 16, 2015 Report Share Posted June 16, 2015 Not at all right imho 2000 Toyota Camry With Sealed Off Trunk Sky High OFC Wiring DC Power 270 XP Alt AQ 2200 Sub Amp Two DC Level 4 m2 12s 80 Mil Murdetmat Gathering Parts For Wall Build. Team DC Audio 2014 Member Link to comment Share on other sites More sharing options...
sittingheavy Posted June 16, 2015 Author Report Share Posted June 16, 2015 This is a screen shot of what I have mocked up with the t/s specs of the mojo, what data was input into winisd, and the transfer function graph. Any chance anyone would care to chime in on what is wrong? I appeciate it. Link to comment Share on other sites More sharing options...
g2shuck Posted June 16, 2015 Report Share Posted June 16, 2015 Internal volume and port are both way too big. 10 cubes is enough for two 15s 2000 Toyota Camry With Sealed Off Trunk Sky High OFC Wiring DC Power 270 XP Alt AQ 2200 Sub Amp Two DC Level 4 m2 12s 80 Mil Murdetmat Gathering Parts For Wall Build. Team DC Audio 2014 Member Link to comment Share on other sites More sharing options...
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