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MEG Admiral
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3,112 Posts
Discussion Starter · #1 ·
I have bought a Stealth 500W 12" Sub, Four 6x9's, 1600w 4 channel amp, 250w 2 channel amp and a 1.2f Power cap. I want to put in a pro looking boot install without needing to see my Mondy to pay for it. I know the sub needs 71L of air but I want to use as much of the boot as I can and not sacrifice my spare as I know I will need it 10 minutes after I remove it. I need the angle of the seatsplus make the sub higher and slightly wider so I can make it thinner. Can someone please advise me.
 

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MEG Admiral
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3,112 Posts
Discussion Starter · #2 ·
All I am asking really is the height of the boot on a Mk1 saloon from floor to just under shelf. Also the angle that the seats are at, I might be able to get the measurements if I know that.
 

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MEG Admiral
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Discussion Starter · #4 ·
Thanks for that Jamie
 

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Big Megger
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174 Posts
I've braved the cold and after hunting out all the bits, the boot height is 19 inchs give or take an inch, with a seeback angle of 10 degree's off the vertical.

If your looking info on the design and building of your enclosure, I found the following site a world of good when it came getting your enclosure size correct.

http://www.bcae1.com/spboxnew2.htm
 

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MEG Admiral
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3,112 Posts
Discussion Starter · #7 ·
Thanks for that Billybob. Tried the site and it confused the HELL out of me. All i know by looking at the booklet that came with the sub is that for a ported box i need 47L and for a sealed box i need 71L.

Taking into account the angle of the seat and that i want it thinner and taller so as not to sacrifice the boot or spare wheel. I have come up with measurements which I really need someone to look over. The guy on the site will not accept emails asking for that. Could you or anyone on here have a look and see if I am going ok with it.
 

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Big Megger
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174 Posts
:thumbup: Send them to me and I'll give them the once over and see if your on the right track. :kaffeetrinker_2:
 

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MEG Admiral
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3,112 Posts
Cheers mate.

Measurements i got for a 47L Ported box are 51.25cm Length, 30cm base depth, 5cm top depth and Height from base to top is 40cm. I hope this is right but I would like so assistance with the angle. The Depth and Height are what I would like. It is just the angle and length that might have gone Pete Tong
 

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MEG Admiral
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3,112 Posts
Discussion Starter · #11 ·
Any help gettting it to 47L would be most appreciated
 

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MEG Admiral
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3,112 Posts
Discussion Starter · #13 ·
With the Base depth at 30 and the angle of the seats at 10 degrees. Have i got the top depth of 5cm right. I might be losing some volume there
 

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Beetle Driver
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2,842 Posts
You must be saying that the seat back is 10 degrees off vertical. So you'll have a top depth of 23cm then. That'll give a bit over 50 litres but makes no allowance for the thickness of material. Close enough then.
 

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MEG Admiral
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3,112 Posts
Discussion Starter · #15 ·
If I am using 19mm MDF. Will that bring it down
 

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MEG Admiral
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Discussion Starter · #17 ·
So what will the final measurements be then mate
 

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MEG Admiral
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3,112 Posts
Discussion Starter · #19 ·
Thanks mate, would that be a ported or sealed unit, if ported where would I be putting the hole and how big would it be.

Sorry to keep bugging you mate
 

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Beetle Driver
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2,842 Posts
Per your own posting this is the right size for a ported box.

If the bumf with the sub driver gave you enclosure sizing then it ought to have a recommended port size.

It is possible to calculate but would depend on the Thiele-Small parameters for your driver. Have a look at the manufacturer's recommendation.

I'd have min 3" diameter tube and the length will depend on the frequency you want to tune to. You could position the port at the top. I'd need to dig around and check that as my sub enclosure was a sealed box.
 
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