PDA

View Full Version : question about fiberglass enclosure.



carfreak5312
01-13-2008, 11:48 AM
Im planning on making a fiberglass box for two 10's and two 12's. I was wondering about how the fiberglass is actual attached to the wooden bottom and back. what stops it from just pulling off. I hope this doesnt sound stupid. I know that you staple the first sheet of material to the box after stretching it over everything, but is that all or does the resin bond with the wood.

Thx ALOT for any help at all.

Trixter
01-14-2008, 01:52 PM
Im planning on making a fiberglass box for two 10's and two 12's. I was wondering about how the fiberglass is actual attached to the wooden bottom and back. what stops it from just pulling off. I hope this doesnt sound stupid. I know that you staple the first sheet of material to the box after stretching it over everything, but is that all or does the resin bond with the wood.

Thx ALOT for any help at all.

the resin will bond....kinda like the screws for a wood box are only there to hold it together until the glue dries.

carfreak5312
01-14-2008, 04:15 PM
the resin will bond....kinda like the screws for a wood box are only there to hold it together until the glue dries.

so the resin will bond with the wood. I guess what im trying to say is that the bottom and back are wood. do i need to cover that in fiberglass too? or will the bottom be uncovered, like if you were to look under??

Frijoles24
01-14-2008, 04:17 PM
2 10s n 2 12s?i thought thatt was a bad idea.. what makes it bad anyways.. i was always thnking of like. 2 8s and 2 15s or somehting

Trixter
01-14-2008, 04:24 PM
so the resin will bond with the wood. I guess what im trying to say is that the bottom and back are wood. do i need to cover that in fiberglass too? or will the bottom be uncovered, like if you were to look under??

it should just bond to the wood....no need to wrap all the way around.

Trixter
01-14-2008, 04:26 PM
2 10s n 2 12s?i thought thatt was a bad idea.. what makes it bad anyways.. i was always thnking of like. 2 8s and 2 15s or somehting

yes, generally speaking, it is a bad idea if you plan on sending the same freq. through both....if your really good with x-over points and can make them work with each other, then you the man.

jellyfish420
01-14-2008, 04:26 PM
i use kitty hair on the inside where the glass and the wood meet.
but on another note. don't mix sub sizes.

skateboardkid
01-14-2008, 04:55 PM
you can leave big area of wood uncovered, just make sure there is plenty of overlap of the glass material and the mdf.

Definitely do not mix sub sizes, 4 10" or 4 12" depending on how much room and power you have.

carfreak5312
01-14-2008, 08:02 PM
Would it be fine to seperate the two with the MDF. like make a barrier, or will i just be getting into more than it is worth. I really would like to keep the speakers that i have now if its possible. Thanks for all of your help. BIG help. ill have plenty of pics. can you mix two different brands?

carfreak5312
01-14-2008, 08:07 PM
One more question, what would be a good resin to use? Ive been looking around and ive seen some boat resin that is really cheap( $38) for a gallon and some well over $100. Does it matter if it has wax in it?

Trixter
01-15-2008, 01:20 PM
Would it be fine to seperate the two with the MDF. like make a barrier, or will i just be getting into more than it is worth. I really would like to keep the speakers that i have now if its possible. Thanks for all of your help. BIG help. ill have plenty of pics. can you mix two different brands?

realistically, you can do whatever you want. however, mixing sub sizes without properly corssing them over will result in very poor sound quality at best. it has nothing to do with seperating them internally....seperate them by putting them in different cars would work.

as for mixing brands, i wouldn't do that either. every brand does not perform the same. i wouldn't take a 12 road gear and a 12 DD and say i'm running 2 12's....there are too many variables to consider.

bets bet, pick the sub you like best out of what you have. sell the others and buy another to match what you kept and build from there. you cant just throw different brands of different sizes together and expect something good to come out of it.

carfreak5312
01-16-2008, 09:55 PM
this might be a newb question, but i am going to have someone cut the wooden rings for the subs in my fiberglass box im making, what is the inner diameter of a 12" sub.

dwman
01-17-2008, 03:42 AM
i get all my glass material from home depot it works great!!

if you have never did glass workbefore get ready!! its not going to be some day job! and if you plan on painting the finished product you better have some body work/body shop exsperiance if you plan on making it look nice.But hey you live and learn just go ahead there is a ton of do it yourself glass online.

and miss matching subs are a crazy idea i would never ever do! nor mixing 2 different size subs unless it 12 and 8's or 15's and 8's imo i would never run 10's and 12's or 10's and 8's i like running 8's with 15s for good mid bass.

everyone has opinions but thats just mine.

dwman
01-17-2008, 03:45 AM
i get all my glass material from home depot it works great!!

if you have never did glass workbefore get ready!! its not going to be some day job! and if you plan on painting the finished product you better have some body work/body shop exsperiance if you plan on making it look nice.But hey you live and learn just go ahead there is a ton of do it yourself glass online.

and miss matching subs are a crazy idea i would never ever do! nor mixing 2 different size subs unless it 12 and 8's or 15's and 8's imo i would never run 10's and 12's or 10's and 8's i like running 8's with 15s for good mid bass.

everyone has opinions but thats just mine.

StupidLoud727
01-17-2008, 08:33 PM
this might be a newb question, but i am going to have someone cut the wooden rings for the subs in my fiberglass box im making, what is the inner diameter of a 12" sub.

If you are talking about the mounting diameter, my alpine 12 is 10.9".

carfreak5312
01-17-2008, 09:45 PM
i got may rings cut with an inner diameter of 11 1/4". im getting 4 ma audio compitition 12"s.(120XE) i think!! and on maaudio's website, that speaker's mounting diameter is 11.4". my thinking was that if it was 11.5", that would be 11 1/2" so i figured i could always remove alot easier than add material to the rings. Does this make any sence at all?? i will have pics on tomarrow (friday).

carfreak5312
01-17-2008, 09:47 PM
If you are talking about the mounting diameter, my alpine 12 is 10.9".

do you think that 1/8" on each side would mess up the mounting of the sub. mine are 11 1/4"