FiberGlass Sub Enclosure Build (56k Warning)

Slippy · Apr 6, 2006

Hi All - Been busy this week making a fiberglass boot build i've been on about doing.

Not yet finished - got some sanding, filling and painting to do yet.... That's happen over the next 2 weekends.

Comments and questions welcome!!

I'll post more when it's done.

Bushboy · Apr 6, 2006

ahhh HAAAA

i knew that was the best way to do it but everyone told me I was stupid when i did it in my tipo!

great work mate! cant wait to see it finished!

Slippy · Apr 6, 2006

Bushboy said:
ahhh HAAAA

i knew that was the best way to do it but everyone told me I was stupid when i did it in my tipo!

great work mate! cant wait to see it finished!

Could you Post a pic of the one you did? Definately the best way to do it, bloody strong, doesn't rattle about in the boot and doesn't take up your whole boot either!

thanks for the comments.

Liam · Apr 6, 2006

A work of art, if that tool is called a router then it makes that bit **** easy.

Nice Beemer too.

Liam

Slippy · Apr 6, 2006

bloomfieldliam said:
A work of art, if that tool is called a router then it makes that bit **** easy.

Nice Beemer too.

Liam

The beemer is gorgeous. 328coupe. There was about 3mm of dust all over it when i finished sanding etc. oops.

The tool is called a router, and yes it does make that bit a piece of ****.

Bushboy · Apr 6, 2006

I never actually finished the tipo one as i sold the car to my gfs dad and he wouldnt have wanted it..plus it wasnt finished anyway.

this is as far as I got.

was gonna fibreglass a layer on and then smooth with filler like you have but I was told by a few people that it wont work and should have made a mould to start with and done it that way etc.

Luke · Apr 6, 2006

Looking great!

-However-

Have you calculated the total volume of the box, and checked its correct for the sub? My fears are it will look great, but will be all show no mouth

Bushboy · Apr 6, 2006

if its too big just get a big tub of polyfiller and plaster it inside to reduce the volume

could work

.. how would you calculate a box that doesnt have any measurable sides

chaos · Apr 6, 2006

Does the Sei stink now?

How thick was the material you used over the sub ring?

It looks good

chaos · Apr 6, 2006

Bushboy said:
how would you calculate a box that doesnt have any measurable sides

Fill it with water

Luke · Apr 6, 2006

Bushboy said:
if its too big just get a big tub of polyfiller and plaster it inside to reduce the volume

could work .. how would you calculate a box that doesnt have any measurable sides

Well you can work out the rough area using flat measurable surfaces

Or you can use some akward maths i learn at A-Level which could work it out

or, you can get something pliable like a bag of sand with the correct volume, and see if it fits inside the box

Luke · Apr 6, 2006

chaos said:
Fill it with water

I wouldnt use water

It will cause the MDF to swell

If you lined it first then maybe

Bushboy · Apr 6, 2006

ahh yes sand could work

hmmmm..

chaos · Apr 6, 2006

Luke1985 said:
It will cause the MDF to swell

:chin: Good point............

Bushboy · Apr 6, 2006

cant wait to get started on my planned cinq install now

cheers slippy! great inspiration

Slippy · Apr 6, 2006

Polystyrene balls out of a bean bag were used and it came out at 23.9 litres. The sub (normally) needs 22.6 litres.

But i haven't put sound deadening material in there yet. In the instructions for the sub it says that the box should be 22.6 for normal, 35.7liters for maximum volume.

So given the the box is a little bigger than the recommended size, i don't think its a bad thing.

Slippy · Apr 6, 2006

chaos said:
Does the Sei stink now?

How thick was the material you used over the sub ring?

It looks good

The material was 2mm velvet. It worked well. But wasn't as strong as fleece would have been. so it was overcoated in 8 coats of fine fiberglass mat. now it's strong.

chaos · Apr 6, 2006

Slippy said:
The material was 2mm velvet. It worked well. But wasn't as strong as fleece would have been. so it was overcoated in 8 coats of fine fiberglass mat. now it's strong.

So how thick is it now?

Luke · Apr 6, 2006

Slippy said:
Polystyrene balls out of a bean bag were used and it came out at 23.9 litres. The sub (normally) needs 22.6 litres.

But i haven't put sound deadening material in there yet. In the instructions for the sub it says that the box should be 22.6 for normal, 35.7liters for maximum volume.

So given the the box is a little bigger than the recommended size, i don't think its a bad thing.

Good man

Slippy · Apr 6, 2006

chaos said:
So how thick is it now?

about 6 - 7mm! more with the filler, but that's not structural. the curves make it really strong. you can stand on it (14stone!) with no flex!!!

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