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View Full Version : What happens when you stick polyfill in a ported enclosure?



goku87
03-07-2009, 11:53 AM
Just curious. :)

thorshammer1
03-07-2009, 12:29 PM
It gets Blown!!:laugh:

JayRich
03-07-2009, 12:33 PM
i think you would have to glue it to the box I guess with the spray adhesive

dragnix
03-07-2009, 12:33 PM
Just curious. :)
it makes the sub acts as if it's in a slightly bigger box...

It gets Blown!!:laugh:

The polyfill or the enclosure? :p:

JayRich
03-07-2009, 12:33 PM
good question though as I was just thinking about the same thing

KHARPS
03-07-2009, 12:41 PM
It will work the same as if it was in a sealed box, as long it isn't blocking your port.

goku87
03-07-2009, 01:28 PM
It will work the same as if it was in a sealed box, as long it isn't blocking your port.

alrighty. thanks for the info. i was just wondering because i want a ported box, but am extremely short on trunk space. (yaris w00t):D

TwoEggCustoms
03-07-2009, 06:14 PM
i just gt rid of my 12 l7 in a prefab kicker box that had polyfill in it it had 1 areo so the fill didnt mess with port flow but that box sounded **** good and it was prolly 2.5cf maximum i neve measured it but it wasnt very big but made alot of noise

ThatChevyGuy
03-07-2009, 06:17 PM
so if were to line the rest of the inside of the box besides the port with an adhesive and polyfill, it has the same benefits as doing the same with sealed?

Awesome.

RogerKline
03-07-2009, 06:20 PM
It increases the perceived size of the enclosure while decreasing Fb (vent tuning). The amount of change varies depending upon the size of the enclosure (larger enclosure are less affected by polyfill) and amount of polyfill used.

goku87
03-08-2009, 12:28 AM
It increases the perceived size of the enclosure while decreasing Fb (vent tuning). The amount of change varies depending upon the size of the enclosure (larger enclosure are less affected by polyfill) and amount of polyfill used.

Hmmm... so is there some sort of equation or chart that would say "if your box is X ft^3, add Y amount of polyfill to get an effective size of Z ft^3?"

9BlackN*Black6
03-09-2009, 02:37 PM
so if were to line the rest of the inside of the box besides the port with an adhesive and polyfill, it has the same benefits as doing the same with sealed?

I wouldn't use adhesive. Go to home depot and get a mesh gutter guard, its like chicken wire, screw it down in front of the port and loosely fill your box. If you dont like the way it sounds you can remove/add some, pretty much fine tune it. Never used polyfill personally but thinking about it, not sure it will make too much of a difference tho. This is my first "big" system, so Im all about tryin different things.

I was thinking of doing this with my x.

KHARPS
03-09-2009, 02:43 PM
Hmmm... so is there some sort of equation or chart that would say "if your box is X ft^3, add Y amount of polyfill to get an effective size of Z ft^3?"

http://www.audiojunkies.com/blog/1348/ultimate-polyfill-subwoofer-enclosure-resourcehttp://www.audiojunkies.com/product/1371/audiopipe-txxdmz15-reviews

9BlackN*Black6
03-11-2009, 08:03 AM
Nice article Im soooo doing this.