Some of you may remember me talking of making some sub boxes. Golf is in the bodyshop so got a little time on my hands

Well here is my first effort for my mates MK4 Golf GTi

Made mould of spare wheel.

Mould out of wheel

Hole for cable put through.

Bit of sound insulation to stop vibrations.

Trial fit of top.

Trial fit of sub.

Securing of top to mould.

Bit of good old duck tape to stop it scratching the wheel.

Carpet on top and cut to size.

The finished article.

Will test it at the weekend and see how it sounds

Interesting design, Hopefully big enough for the sub.

Well terry (who owns the car) has a concours GTi aniversary and does all the show and shines. They loose points for having things in the boot so i have hidden everything including the amp.

Sub is a 11" and very shallow with and requires a smaller volume of air than most subs.

:drool: :drool: :drool: :heartbeat :heartbeat :hooray: :hooray:

Brilliant totaly brilliant...!!

Joel

Glad you like it. Got to make another one for a new beetle now

Looks good - would that kinda thing fit in a Furby as well?

Great...

So where does he put his jack etc now?

Great...

So where does he put his jack etc now?

Thats my next job. Going to mould some pull out trays to fit under the front seats for the tool kit and jack.

WW_VRS Should fit the furby VRS the same as it has a 16" steel spare if i remember correctly.

Excellent..

It looks quite trick but I'd be concerned that the volume was too small... I've seen this done before and they used the whole wheel well. A good way to test the volume would be, as soon as you've made the bowl and before you attach the top, fill it with water from a measuring jug, that way however much water you measure into it is the volume of the enclosure

My only other thoughts would be, bearing in mind boxes are usually made from 18mm MDF or similar, the fibreglass looks a bit on the thin side. And a spot of polyfill inside before sealing it up would be a good plan to reduce vibration and make it sound nice and tight.

Oh yeah, after you've bonded the top on, but before you fit the sub, silicone sealant around the speaker cable hole and the join between the wood and fibreglass would be a good idea to ensure it's air-tight.

PS good choice of sub - Focal stuff is excellent. I'm too tight to pay for it myself though, usually stick to MB Quart where possible. They've been bought out by Rockford now though which means price hikes are inevitable :thumbdwn:

The focal sub we used is specific for small enclosures and i did fill the mould with water to check it.

You can get away with smaller walls as it's tight up against the inside of the wheel. Box was sealed using resin around the inside of the mould, speaker cable and top. Should not use silicone near speakers as the vapour it gives off can damage the voice coils.

Tried it yesturday and it sounds mint. No air leaks and no rattles from the enclosure in the wheel just a exhaust heat shield that was soon sorted.

Tnx for feedback on the Furby - looks good

Looks like a really neat solution

Not being an expert on such things can I ask a really dumb question?

You mention that you made one for a concours car and they don't like to see anything in the boot...

So does that mean that when the sub is in place you put the original boot carpet over the top to hide it?

If you do that does it impede the performance? :confused:

I feel an 'I'll get my coat' moment coming on!!!

Looks like a really neat solution

Not being an expert on such things can I ask a really dumb question?

You mention that you made one for a concours car and they don't like to see anything in the boot...

So does that mean that when the sub is in place you put the original boot carpet over the top to hide it?

If you do that does it impede the performance? :confused:

I feel an 'I'll get my coat' moment coming on!!!

If it were me, I'd make a false floor to lie over the top of the boot floor from MDF or similar, I'd cut a hole in it slightly larger than the sub, then cover the hole with sturdy wire mesh fixed down tight so it doesn't rattle. I'd then cover the lot in acoustic carpet through which the sound of the sub could travel cleanly. That way it looks standard, sounds good and if any muppet chucks something on top of the sub, the mesh stops it from getting damaged. That's just me though...

(PS this is what I did with my rear parcel shelf when I fitted speakers to it, so it still looks standard and can have stuff stood on it quite happily...)

How would you feel about doing this kinda thing for someone else (some financial reward is not out of the question there of course )

How would you feel about doing this kinda thing for someone else (some financial reward is not out of the question there of course )

I could be talked into it. JL Audio want

Will be a while yet, still awaiting firmed up delivery date :( - will definitely keep it in mind - you'll see my sig change when I know what the date is gonna be