whatsepultra Posted August 25, 2011 Author Report Share Posted August 25, 2011 um its because you are trying to pressurize space forward and behind the box. regardless if you think you have it sealed off its obviously not. you proved that by openign the trunk and it getting louder. if you did that and it was actually sealed off you'd notice no output change. I dont know why thats so hard to comprehend at all. If you want to put your woofers there wall it off. you already wasted the space so why not go balls out. I guess he completely disregarded my first post. thats what happends when you tell people something they dont wanna hear even if its the truth fyi sitting a box where the backseat is unless its a wall sux!! I would be able to get way louder with the subs in the trunk Another thing I never got. You build in the backseat (which normally blows...) but dont want to wall? So what, you can see out the rear? ive done a wall before in this vehicle but just had trouble sealing it off and the box just wasnt perfect for the subs im just trying to build the perfect box before i wall it off Quote Link to comment Share on other sites More sharing options...
TheyDontWantMusic Posted August 25, 2011 Report Share Posted August 25, 2011 Most cars are louder with a door(s) open or a window(s) down. Just depends on the vehicle/setup. Mine isn't I gain nothing opening the drivers door, which is kinda nice, because it means the stereo is as loud as it could be sealed on the dash. Quote Link to comment Share on other sites More sharing options...
TRTC360 Posted August 25, 2011 Report Share Posted August 25, 2011 i'm sure you've been told this already but if you really did do everything they have said and done it right maybe you're just one of those people that have a car that simply can't get loud no matter how much you mess with it, unless you do go balls out and wall the sumbitch properly haha. Quote '93 Firebird Formula V8 H/U- Kenwood eXcelon KDC-X395 Mids/Highs Amp- Hifonics ZXI80.4 Wiring-KNU RCA's, Speaker Wire, And Two Runs Of Trystar 1/0 G34 Red Top and a 180amp Ford Alternator www.youtube.com/TRTC360 Link to comment Share on other sites More sharing options...
n8ball2013 Posted August 25, 2011 Report Share Posted August 25, 2011 if im not mistaken its a cavalier or sunfire. Quote THERE IS NO BUILD LOG! 1998 Chevy Silverado ext cab Alpine CDA-9887 4 Team Fi 15s 2 Ampere Audio TFE 8.0 2 Ampere Audio 150.4 3 Digital Designs CS6.5 component sets Dual Mechman 370XP Elite alternators inbound! 8 XS Power d3400 6 XS power d680 Second Skin Stinger Tsunami Wiring Sky High A Real Voltmeter not a piece of shit stinger. Link to comment Share on other sites More sharing options...
whatsepultra Posted August 26, 2011 Author Report Share Posted August 26, 2011 if im not mistaken its a cavalier or sunfire. its a honda prelude Quote Link to comment Share on other sites More sharing options...
n8ball2013 Posted August 26, 2011 Report Share Posted August 26, 2011 if im not mistaken its a cavalier or sunfire. its a honda prelude then i am mistaken. the side window and seat lever reminded me of a cavalier. preludes are tough cars to get loud i believe. but your install is really half assed in there and that doesnt help. Quote THERE IS NO BUILD LOG! 1998 Chevy Silverado ext cab Alpine CDA-9887 4 Team Fi 15s 2 Ampere Audio TFE 8.0 2 Ampere Audio 150.4 3 Digital Designs CS6.5 component sets Dual Mechman 370XP Elite alternators inbound! 8 XS Power d3400 6 XS power d680 Second Skin Stinger Tsunami Wiring Sky High A Real Voltmeter not a piece of shit stinger. Link to comment Share on other sites More sharing options...
89boxchevy Posted August 27, 2011 Report Share Posted August 27, 2011 (edited) your solutions already been told, make a better box and seal it off and you should be good to go. x1000 if ur install sucks it aint gonna sound good at all seal off the trunk. when i did mine i used mdf screwed it my dash and trunk opening with a super heavy bead silicone down first. then went around it again with silicone and dynamat over the edges it has to be air tight or its more than likely gonna sounds like Edited August 27, 2011 by 89boxchevy Quote 89 Chevy Caprice (is under construction) dual alts 4/0 welding cable for wire red top under hood 3 yellow tops behind the front seat ( who needs a back seat anyways lol) big 3 of course Eclipse 3000 interiors are getting rebuilt now 2 crescendo bc2000 2 shocker sig 12s rebuild pics Link to comment Share on other sites More sharing options...
walled01alero Posted August 27, 2011 Report Share Posted August 27, 2011 Heres how i believe it is working. When you open your trunk that extra pressure that you have in your car is escaping. Think of it like your subwoofer box, the bigger the port is, the lower your tuning. Thats pretty much the same thing thats going on here. Now for how to get around it, maybe drop the tuning of your box down a little? Or try to do a sub up/port back or vice versa box. Im not a big box designer so dont take what im saying as the truth, just trying to chime in and maybe help you out. If Ray or RAM_Designs sees this, see what they say about this. The second bolded statement is the only useful portion of your post. Quote Link to comment Share on other sites More sharing options...
whatsepultra Posted August 27, 2011 Author Report Share Posted August 27, 2011 well i dropped my tuning down to 33hz and problem solved!!!! now on to walling it off dam i hate sanding fiberglass. any other ideas of sealing it off???i plan on fiberglassing from the mdf board to the roof floor and sides but like i said sanding all that in the vehicle is gonna suck Quote Link to comment Share on other sites More sharing options...
whatsepultra Posted August 27, 2011 Author Report Share Posted August 27, 2011 if im not mistaken its a cavalier or sunfire. its a honda prelude then i am mistaken. the side window and seat lever reminded me of a cavalier. preludes are tough cars to get loud i believe. but your install is really half assed in there and that doesnt help. how is it half assed in there???? because its not fully walled? Quote Link to comment Share on other sites More sharing options...
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