woodzyspl Posted May 26, 2012 Report Share Posted May 26, 2012 I like the box and the fact that the port is curved. The only thing that bothers me about the subs up and port back, is that from what I've seen on here (on the forum), they don't seem to do well on numbers even when they are noticeably loud and move alot of air. Could it be that there's too much pressure being loss from flexing the roof with all that sound pressure. I'm curious how it would sound if you "mouthed" the top of the box with a port firing towards the front, so that sound only travels towards the front of the vehicle. In a way, when you look at the box from the front of the vehicle, it is like a "Quasi-Sixth Order Series-Tuned Bandpass" (from the12volt.com) with the first port being the space between the back of the box and the rear hatch, and the 2nd port being the spacing from the top of the box to the roof. My only issue is that this "second port being the gap from roof to top of box" is flexing, thus losing sound pressure going towards the front, and that it's distance from the top of the box is different than the spacing of the rear of the box to the back hatch. Correct me if I'm wrong. But keep up the good work, because this system is definitely brutal! mate dose a 50 using subs up port back on music, he got 2 gz 15's and a stetsom 9k with some bad voltage drop...still got all 5 seats and can do hairtricks with a box not buillt to spec lol anything is possible and this thing looks so loud and brutal it not funny..id love see a 4th order wall with what hes got.. AUSTRALIA do i need say more? HU: some crap pionee AMP: dc 9k @ 18v SUB: 4 elevation audio sqx 12" Battery: 2 neuton power 8200d burp setup for fun 152's soon to come: rebuilt soundstream xxx (2 18" OR 3 15" wall) Bunch speakers, more batts and new HU Link to comment Share on other sites More sharing options...
Tech One Posted May 27, 2012 Report Share Posted May 27, 2012 I hate to burst anyone's bubble, but your ear does not perceive AUDIBLE loudness the same way it does PRESSURE. Last I checked, a termlab sensor measured pressure and not the perception of sound. Therefore it is completely possible to have a vehicle that meters crappy SOUND louder than one that meters well.. He built that thing to be a ground pounder that he could bring to competitions for FUN. If he was so focused on throwing big numbers, he'd wall it and tune and burp it at much higher frequencies.. Link to comment Share on other sites More sharing options...
TravisStuchl Posted May 30, 2012 Author Report Share Posted May 30, 2012 trust me i sat in it and its pretty freakin loud . 158 159 at 33 hz is pretty freakin loud for not having a wall...... but ya still suck lenny ...lol just kiddin There is a video I did with you in it Jeff Find me on - YouTube http://www.youtube.c...tu?feature=mhee FaceBook - https://www.facebook.com/travis.stuch 2013 2014 2016 My Ride: 96 Chevy Blazer Adv-3 158 ADV2 157.5 (8k clamped class) 12 Contralto 12s Kaos4 160db Extream-4 147db a foot OUTSIDE the window, 30 sec music avg Adv-3 163s+ 2016 TOP DOG national champion Blazer Build log - http://www.stevemeadedesigns.com/board/topic/203259-96-blazer-12-12s-forth-rebuild/ Old Build log - http://www.stevemeadedesigns.com/board/topic/127877-grand-prix-walled-4-fi-sp4s-2-ia-401s-all-in-pics-last-page/ Link to comment Share on other sites More sharing options...
TravisStuchl Posted May 30, 2012 Author Report Share Posted May 30, 2012 You know its loud when Jeff with 166+ DB musical van said its loud Find me on - YouTube http://www.youtube.c...tu?feature=mhee FaceBook - https://www.facebook.com/travis.stuch 2013 2014 2016 My Ride: 96 Chevy Blazer Adv-3 158 ADV2 157.5 (8k clamped class) 12 Contralto 12s Kaos4 160db Extream-4 147db a foot OUTSIDE the window, 30 sec music avg Adv-3 163s+ 2016 TOP DOG national champion Blazer Build log - http://www.stevemeadedesigns.com/board/topic/203259-96-blazer-12-12s-forth-rebuild/ Old Build log - http://www.stevemeadedesigns.com/board/topic/127877-grand-prix-walled-4-fi-sp4s-2-ia-401s-all-in-pics-last-page/ Link to comment Share on other sites More sharing options...
sprkn_ranger Posted May 30, 2012 Report Share Posted May 30, 2012 That thing is crazy Check out my build log! 4 Havocs in a blowthrough http://www.stevemeadedesigns.com/board/topic/187506-sprkn-rangers-blowthrough-build/ Link to comment Share on other sites More sharing options...
OBI Posted May 30, 2012 Report Share Posted May 30, 2012 honeslty for how many subs he has and allll that power.. he should be a good bit louder.. kinda sad really What numbers you doing? Can you do 51's at 20hz and 56's on music? Didn't think so. Link to comment Share on other sites More sharing options...
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