Stuffing materials

[smithy666]

I'm in the final stages of completing a subwoofer using the Scan-Speak 23W subwoofer in an approx 1 cu ft sealed enclosure.
I'm looking to line the inside walls + stuff the enclosure, but there seems to be a lot of different views on what is best. My questions are:

- are 1" thick fibreglass (insulating batts) good to line the walls of the enclosure?
- what additional stuffing should I use if any (some say total of 0.5-1lb per cubic ft) and what is best for a sub?
- Is wool stuffing any good?

[planet10]

Wool is good. Fibreglass is good (but itchy), polyfluff is good...

Stuff to taste.

dave

[Henkjan]

Stuff to taste

yep, but as little as you can get away with... unless you want to cross over rather high, a closed or BR sub genneraly does not need (much) stuffing

[Dr. Ram]

Originally posted by smithy666

- are 1" thick fibreglass (insulating batts) good to line the walls of the enclosure?
- what additional stuffing should I use if any (some say total of 0.5-1lb per cubic ft) and what is best for a sub?
- Is wool stuffing any good?

There are really two questions:
(i) What material you stuff with
(ii) How much you stuff with

Whatever you choose, make sure you understand the implications of (ii) - too little and you have a high system Q where "high" means over 0.7 (heading towards a "Chebychev-aligned response). Too much and you have too little which means under 0.58 which magic number corresponds to a Bessel-aligned response. These extremes sound very different. If you have measuring equipment, use it to good effect. If not, consider some simulation as a next best alternative.

-Ram

[GM]

FWIW: http://web.archive.org/web/200210070...ces/fiberfill/

GM