Polyfill.....will it change tuning

[XDrkmanX 10+ year member]

I currently have a pair of XXX 12's in a box that has become a permanent part of my trunk. Each sub has around 2.5cuft of air space and the port is tuned to about 32hz.

I know that 2.5 is not an ideal airspace for a XXX and with the box not going anywhere. The only thing I can think of doing to try and gain a little more space is polyfill. My question is if I put polyfill in my box (1.5 X the subs enclosure, correct?) my subs will think that they're in a bigger box, so does this mean that the tuning of my box will also change? And how much bigger will the 2.5cuft seem to the sub?

Thanks for your help.

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[Acidburn 5,000+ posts]

yes, it'd be very harde to calculate

 

[GemaRastem 10+ year member]

don't polyfill a ported enclosure, doesn't work

 

[Expy2000]

Just blow it out like ***...

//content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[JimJ 5,000+ posts]

The only time you'd want polyfill in anything but a sealed box is mass loading a quarter-wave TL...

Other than that, forget it.

 

[iagrdshaka 5,000+ posts]

http://forum.sounddomain.com/forum/ultimatebb.cgi?ubb=get_topic&f=11&t=076651#000000 //content.invisioncic.com/y282845/emoticons/rolleyes.gif.c1fef805e9d1464d377451cd5bc18bfb.gif

 

[XDrkmanX 10+ year member]

Thanks everybody

 

[chinny 5,000+ posts]

don't polyfill a ported enclosure, doesn't work

Yes it will you can like attach some chicken wire or some shit to make the polyfill not fly out the port... be creative, like req says, think outside the box. //content.invisioncic.com/y282845/emoticons/eyebrow.gif.fe2c18d8720fe8c7eaed347b21ea05a5.gif

 

[cjjackson85 5,000+ posts]

Superglue it to the *** of the sub...