Polyfil

[Compjake 10+ year member]

I was going to build two boxes as 32x11x16 with a slot port being 9.5inch in.. should be tuned to about 37.0636 hz (the measurements I gave earlier where a lil short of the actual size as I need wiggle room to get spare tire out when needed)

 

[pr-festiva 10+ year member]

is that 9.5 inch the area or the length of the port?

 

[Compjake 10+ year member]

9.5inch length. 2.5inch wide.

 

[pr-festiva 10+ year member]

what is the size of the port 2.5X?X9.5 long?

 

[Compjake 10+ year member]

Correct

 

[pr-festiva 10+ year member]

im going to assume the port is 2.5X11X9.5 then,,,so 27.5 SQ inches of port for each pair of subs. try it but 150 is a long shot

 

[Compjake 10+ year member]

its not an L port, its a slot port. I used RE's L-Ported Speaker Box Calculator and just left the L entry as a 0.. it shows a box made of 3/4 MDF measures as 32x11x16 9.5 port height Length 12.75 would be 37.0636127516055 hz lol

I dont think I was too clear in my earlier posts, sorry.. Ive been tired today *yawn*

 

[pr-festiva 10+ year member]

ok sounds like the port is 2.5X9.5 and 12.75 long ,,, if its right thats just shy of a 4" port per sub,, like i said you can give it a shot,just pay attention to the subs so you dont kill them

 

[ARSkemp 10+ year member]

keep in mind that if you use polyfill, it will probably effect the tuning of the box...

 

[Compjake 10+ year member]

I'll probably end up doing that then, I will be pushing 4000RMS off of 2 Soundstream 2000D's so I guess I should start with 1/4 gain and see how they react before pushing them to the limit lol.

 

[saidaudio 10+ year member]

Polyfill lowers the tuning of a vented enclosure a little bit. Also, according to a Kicker installation manual I read once, adding polyfill to a vented box slightly decreases efficiency, but smooooths out the sound.

Also, I don't know if anyone mentioned this but you can get polyfill in sheets, but still loose enough, and glue or staple it to the sides. I did it with my JL 12W6v2 and it sounded so smooth and none of the polyfill came out.