How thick should the fiberglass be? For example when making a wooden box i was told 3/4 mdf.

 

Well that depends on the sub and if its ported or not.

But on average I would make it:

3/8-1/2" think but you can get away with

 

Thanks for the response, darkknight1999. Can you explain what difference porting makes? I'm interested in porting.

Thanks again.

 

It depends on the sub you use. But it changes the the freq. and sound/tone. You can tune the box differently. But again that will depend on the sub.

Some subs sound great ported, some don't, some can sound great either way.

 

Sorry I wasn't clearer. My question was whether a fiberglass box should be thicker for a ported application than for a sealed application.

Thanks.

 

Thicker for a sealed.

 

Needs to be able to support the pressure without flexing or worse cracking from the pressure.

 

Makes sense when I think about it. Some of the back energy wave escapes through the port so there's less pressure on the enclosure (compared to sealed).

Thanks.

 

 

Thanks for the response! I'm making one for a Rockford Punch 1 8"