BmanSS Posted July 27, 2005 Report Share Posted July 27, 2005 Under rear seat bass box with down fire 12's ,should you fill ? Link to comment Share on other sites More sharing options...
Dylan06SS Posted July 27, 2005 Report Share Posted July 27, 2005 Under rear seat bass box with down fire 12's ,should you fill ? <{POST_SNAPBACK}> I think it depends entirely on the type of woofer, size of the enclosure, sealed or ported, etc. Link to comment Share on other sites More sharing options...
misterp Posted July 27, 2005 Report Share Posted July 27, 2005 My opinion here - properly stuffing a box can make the woofer 'believe' it is in a 10% larger box; as small as the underseat area is (especially for 12s) yes I would seriously check into it. Mr. P. Link to comment Share on other sites More sharing options...
HOLSTEIN Posted July 27, 2005 Report Share Posted July 27, 2005 Link to comment Share on other sites More sharing options...
Krambo Posted July 27, 2005 Report Share Posted July 27, 2005 It will also change your enclosure tuning frequency downward a bit. Hardly noticeable though. Link to comment Share on other sites More sharing options...
kaotik1 Posted July 28, 2005 Report Share Posted July 28, 2005 I have type R 12's in my truck, under the seat. They fire down twards the floor. My box as most here is part mdf, and part fiberglass. I did not have to raise my seat height but, I did have to add polyfil to the box to get the size. Link to comment Share on other sites More sharing options...
6.0ss Posted July 28, 2005 Report Share Posted July 28, 2005 Filling made a noticable difference in my brothers truck with 2 diamond 12's facing up. It played lower and louder with about 50% fill in it. Link to comment Share on other sites More sharing options...
CraigW Posted October 18, 2005 Report Share Posted October 18, 2005 I added it my boxes and it dropped its peak spl frequency from 58db to 52db and increased my spl from 136.5 to 138.7 Link to comment Share on other sites More sharing options...
BmanSS Posted October 18, 2005 Author Report Share Posted October 18, 2005 thanks guys Link to comment Share on other sites More sharing options...
Corpserodeo666 Posted October 19, 2005 Report Share Posted October 19, 2005 I added it my boxes and it dropped its peak spl frequency from 58db to 52db and increased my spl from 136.5 to 138.7 <{POST_SNAPBACK}> Mics love the higher freq. but since your box is firing into the floor, this will act as a loading wall for the sub, make sure you give the sub lots of room to breath, because sometimes polly fill can me your coils burn out from the stress, but if your not worried about that go ahead and do it, the bass will sound real tight (not "tight!"). My opinion is to load up the box with polly fill it will dampen the notes and make the duration last a little longer. Link to comment Share on other sites More sharing options...
kowboy Posted October 20, 2005 Report Share Posted October 20, 2005 I was wondering about this too. How much polyfill to use? Should it be stuffed in there from the floor to the subs, or just lining the enclosure, or about half, or what? Please help, 'cause my soundshop added some polyfill after I asked about it (seemed like they were just trying to appease me instead of actually having an opinion about whether or not it helps), and it actually sounded WORSE! My lows weren't as low, and it didn't seem to hit as hard. I removed the crap myself, and when I opened up the enclosure, it was SOOOO much in there, that I had a hard time removing it all. I mean, it was just stuffed in there, seemingly "choking" my subs. Is that even possible? I don't know, I'm thinking about adding some of it back in there, but I just don't know how much. Yeah, I guess I could experiment, but I'd like to know what's the right way to do it. Please Help. Thanx! Link to comment Share on other sites More sharing options...
Corpserodeo666 Posted October 20, 2005 Report Share Posted October 20, 2005 I was wondering about this too. How much polyfill to use? Should it be stuffed in there from the floor to the subs, or just lining the enclosure, or about half, or what? Please help, 'cause my soundshop added some polyfill after I asked about it (seemed like they were just trying to appease me instead of actually having an opinion about whether or not it helps), and it actually sounded WORSE! My lows weren't as low, and it didn't seem to hit as hard. I removed the crap myself, and when I opened up the enclosure, it was SOOOO much in there, that I had a hard time removing it all. I mean, it was just stuffed in there, seemingly "choking" my subs. Is that even possible? I don't know, I'm thinking about adding some of it back in there, but I just don't know how much. Yeah, I guess I could experiment, but I'd like to know what's the right way to do it. Please Help. Thanx! <{POST_SNAPBACK}> I would say try not to fill it all the way so the sub has a hard time fiting, leave a little bit so the sub could actually breath, but never use polly fill in a ported box it will defeat the whole point of having a port. Link to comment Share on other sites More sharing options...
mwalls54 Posted October 21, 2005 Report Share Posted October 21, 2005 I have always put a small amout of polly fill in the sub boxes and it makes a big difference imo. Link to comment Share on other sites More sharing options...
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