Picture of Add more bass to your speakerbox/subwoofer encloser on the cheap
If you ever wanted more bass to your sub woofer bandpass box? Now you can on the cheap instead of buying poly fill.

Step 1: What you need

Picture of What you need
Go purchase, pillow stuffing from art supply, wal mart etc.
bhatti17863 months ago

How to make a 6inch woofer box and box size

aarchbold3 years ago
I think my subwoofer`s skeakers are too small. Can I just change them for two bigger ones without damaging the subwoofer ? What detail should I take into account before doing it ?

thank you.. this will help me alot.. including the comments..
Spectrace6 years ago
why do you say "without buying polyfill"
pillow stuffing is polyfill
linuxlifer (author)  Spectrace6 years ago
No it acts like a buffer... it does the same but for the fraction of the price
No, it is the same stuff, just not at the inflated markups that audio shops charge. I found it cheaper to actually buy pre-stuffed pillows and gut them when they were on sale then even getting the pillow stuffing on its own.
gzuckier richms3 years ago
we used to use fiberglass, but you couldn't use the insulation grade stuff, you had to get special long fiber fiberglass so that the fibers wouldn't get into the speaker suspension and make it sound all scrapy. polyfill oughta be a lot easier to work with.
i just stuffed a pillow in mine.
JZ Price6 years ago
how tight should you pack it?
Usually you would pack it about one pound to every cubic foot.
you can   play around with the amount of stuffing too.
Adding stuffing to any subwoofer will slow down the air flow in side of the subwoofer resulting in am bigger box. 
apr16946 years ago
what should be used to stuff it? cotton balls?
 You can use polyester pillow stuffing, which can be found in any craft store.
hoihoi1516 years ago
you could just buy a good sub to begin with.
DIY Dave6 years ago
Is that why people put stuffing in their drums? (to increase the bass)
effectively yes and no. the pillows in kick drums are to help guard against a punchy sound. if a drummer is performing onstage and they need pillows in their drum then the sound tech sucks. pillows in drums are for home use basically
DIY Dave6 years ago
should you stuff it full or just put a little bit in?
any idea on the effects on different wattages? how many watts are you at, what size speaker?