nineball

i don't think the box isn't sturdy and said the opposite, i was more referring the the small amount of mdf left after routing that the subs are mounted to/supported by. that seemed pretty thin. as far as bracing the enclosure itself, for boxes the size of yours i have used left over 2x4 scraps and cut them down to size, then glue and screw between the face and back. cheap, simple, effective.

tareed94

I want to see that when you're done! Don't see many of them on here.

dhmcfadin

I gotcha. Thanks for the suggestion. What do you recommend I do to not affect airspace. I am at a little over 1.5 cu ft which is the minimum airspace for 3 MK V's. If I add anything internally, I will drop below that number which I cant have. That's the only reason I suggested fiberglass.

nineball

i honestly don't think it will be an issue. even if you used six 4" long pieces of 2x4 as supports it would be 126" of total airspace used, and 1cf is 1,728", so they would be using 0.072cf or so small an amount it would be negligible at best. if you are really **** about airspace, and i have been know to be at times as well, you could always add some polyfil to make up for it. i'm relatively certain you are familiar with polyfil but for those that are not when added to a sealed sub enclosure it slows down the back waves and tricks the sub into thinking there is more airspace than actually contained in the enclosure. but again, i don't think you would notice any difference in performance between 1.5cf and 1.427cf

-edit-

you have some router skills. you could always make up something along the lines of this (the middle piece), but given the size of your enclosure i think it would be a waste of time and effort




-second edit-

looking at your box you would only need 4 braces - one between each sub and one on each end - and i think you would be golden. that brings it down to 0.049cf, so you would net 1.451cf.

Boosted2015

If you're concerned that the mount may be too thin you could always route a piece the same as the piece you are mounting the subs in. But then flip it over and sandwich the sub between them. If it's just bracing and external piece on top would effectively thicken up the MDF and provide some protection from seats laying against your subs when they move on their outward excursion. If it's the actual sub mount itself, then a sandwich ring around would help. You could also use a few metal tubes (3 on each sub) to run all they way from the front to back and bolt through them. Keeping the face and rear as one unit. There would be some impact to air volume, but very minimal with something of that size.

Logan245

Replying back to this thread, I never actually got anything done..yet lol. I had blue prints made up by Car audio Fabrication, but no audio shop here has replied to me sending in the request, and haven't heard too many good positive things about shops here. I would build it myself, but do not have the tools or experience to do it lol.

nineball

ask around your friends and family and see if anyone works in construction. it is really pretty simple to build an enclosure but can be daunting ig you have never done it before. if all else fails you could always find a carpenter on CL to have it built, and most likely they won't charge you anywhere near what an audio shop would. they are notoriously overpriced.