Installed custom 8" sub box

MX52Z

Jees that's bad a$$!

snowsurfdirtx

im trying to do the same thing, but with an 8" W7. mayyybe two W7s if i have enough cu.ft. for the box without being too massive, and the amp behind the seat. anyone have more pics of stuff like this PLEASE pm me

juld0zer

hey mate, what are the dimensions of the box underneath? There isnt much room without building an odd shaped box.

I have the Bose audio so i'll need to extend the loom and relocate the amp.
My current box is 416 x 185 x 150mm but each JBL 8" requires 8.5 litres of volume.....

Kudos for the neat install

peleincubus

Can the op please update this thread. This is exactly what in looking for. If I could get the information I would HIGHLY appreciate it.

Thanks

juld0zer

you can use my dimensions - they are the inner dimensions. i used 12mm MDF which i know is thin for a woofer box but you really sacrifice box volume with thicker MDF. Using 12mm does require some precision when using screws as it splits easily.

It is the biggest sealed enclosure you can fit in there. In the end, i had to cut a slight slope into the box to allow a perfect fit with the lid attached.

If you decide to drop the box part into the cavity, then screw the lid on inside the vehicle rather than assembling the entire thing outside of the car you might not need to cut the slop but it will be annoying to hold the box up perfectly level and screw the lid on perfectly.

The reason for the slope and the direction of the slope will become apparent when you have a look at the cavity - it's not a straight up and down affair.

Do you have Bose audio? If so, the amp will need to be relocated.

Also, i am running a single Kenwood 8" woofer. The only way i can see dual 8's fitted is if the OP built a free air setup - ie, just what you see in his pictures and nothing underneath. You won't fit dual 8's in my box. In fact, the width of the box barely fits the woofer!

For the lid, use your boot mat as a template then jigsaw it out as a starting point. You'll most likely need to do a few trial and error fitments and trimmings before achieving a perfect, snug fit. Goodluck!

peleincubus

Thanks man. Do you think if you only used one 8" sub that you could use the other area to somehow install the amp? I want on to power the two mid and tweets plus sub.

juld0zer

on the lid? absolutely! depending on the dimensions of your amp it should fit without issue.

but mounting the amp on top would not result in a stealth install... it depends what you're after i guess.

my amps are currently screwed into an old wooden drawer which is inverted and bolted to where the spare tyre would be mounted. it's a temporary thing until i extend the wires for the Bose amp and find a suitable hidden home for both.

you can easily gain 30-40% more cargo space by removing the spare tyre and all the foam. but you run the risk of being stranded - mobility kits are futile for huge punctures so the other option is to fit runflat tyres. the lucky thing is the F10 BMW 5 series can be outfitted with identical sized tyres to our Z (assuming stock Rays 19") so runflats in our size do exist. Only problem is you're limited in choice and the tyres are designed for heavier cars, thus may not offer as much grip as the better non runflats like PSS.

anyway, that's for another topic

wood280

could you take some pic of your sub box, i really like that box. i think i would like to have one. just so i can see what it look like in that space.

JustJayy16

I would like a box of my own preferably the one for the 2 8s anyway we can work a price out and maybe you can send me one pm if interested