Fiberglass 10" Subwoofer Cubby Box

[Mr. Spectacular]

Hey Folks,

I posted this in the a/s5 forum as well but it fits the 4's so i figured i'd drop this here too. I built an enclosure for a JL Audio 10w6 which fits in the left cubby in the trunk. The box sounds great and i'm happy with it, however the way i built it, the speaker requires a spacer for mounting. I'm thinking i will build another box to mount without the ring. Would anyone be interested in this one? I am also not opposed to building a few duplicates since i will have the mold if others are interested. Thoughts?

I envision a Nokia faceplate-like cover as a finish so you can still use the stock "snaps" in the trim. Here's a few pics of the box. Fits cleanly and is shaped for the trunk arm to move freely. I can also provide tips for relocating the stock amp/nav unit if needed.








Feel free to pm me offers if any of you are interested.

With trunk liner back in


Below is how it sits in the trunk. Not bad at all, i just want it slightly different. The top of the liner would be about 1/2" further back from what you see below but since I'll be removing it soon I didn't fasten the clips...they are an absolute pain to remove

[EHesh14]

I have the exact same sub and I am looking for a box like this. I would love it if you go into detail about relocating the stock amp. And I"ll be pm'ing you about the box!

[SteveYem]

I'm highly interested. In for more details...

[blackfunk]

Very interested. Had something similar in past cars. Still have the sub so this should be 'plug and play' for me.

[Black_V!per]

Correct me if I'm wrong, but those with B&O wouldn't have space in that cubby right? Since the amp is there? I hope I'm wrong and I can trouble you to make a duplicate, cuz I'd love a little more base with the B&O.

[doug97gxe]

what's the specs? interior volume? mounting depth? diameter of the hole?

[infinkc]

Correct me if I'm wrong, but those with B&O wouldn't have space in that cubby right? Since the amp is there? I hope I'm wrong and I can trouble you to make a duplicate, cuz I'd love a little more base with the B&O.

Yea those with B&O, the amps take up that space.

[robokn]

Why don't you build a box for the parcel shelf, having measured the space there is enough room for TWO JL shallow subs which will give a lot better bass
than being trapped in the boot

[Deckdout2]

Nice build! I had a buddy of mine that owns an audio shop here locally fiberglass me a box for the same spot. Love having all my trunk space!

[Mr. Spectacular]

I have the exact same sub and I am looking for a box like this. I would love it if you go into detail about relocating the stock amp. And I"ll be pm'ing you about the box!

I have B&O, but non-b&o should be less complicated. The pic below shows how i relocated my amp and nav unit. They are currently fastened to a plastic rack so you only need to take out a few screws and you can then position the units "freely."

Very interested. Had something similar in past cars. Still have the sub so this should be 'plug and play' for me.

that's the idea!

Correct me if I'm wrong, but those with B&O wouldn't have space in that cubby right? Since the amp is there? I hope I'm wrong and I can trouble you to make a duplicate, cuz I'd love a little more base with the B&O.

You are correct in that the amp and nav unit are located there currently. luckily, there is enough spare space in that little cubby to reposition them without too much hassle and proceed to enjoy an aftermarket sub (and man does it make the perfect difference)

what's the specs? interior volume? mounting depth? diameter of the hole?

It's roughly .62-.63ft^3 which is right what this speaker or the 10w3 call for. hole diamieter i believe is 9.02 (using the baffle that came with the speaker). Mounting depth is roughly 6 3/4" (about an 1/8" shy of the natural mounting depth needed for the 10w6 hence the use of the spacer ring).

Yea those with B&O, the amps take up that space.

until you move them

Why don't you build a box for the parcel shelf, having measured the space there is enough room for TWO JL shallow subs which will give a lot better bass
than being trapped in the boot

The goal was to keep all the trunk space. Building a box under that shelf (which isn't strong enough to hold the speakers anyways and would require re-enforcement) would really decrease the amount of usable space. The 10w6 is quality speaker that produces sound really nice sound even when "trapped" in the trunk. should you desire more sound to be ported into the cabin, you can remove the stock "subwoofer"...or even just open the pass thru...just a few options

It's cool to see that others were having the same frustrations I was with the stock sound and looking for a clean aftermarket install. EHesh has dibs on the old box. I'm going to make a mold so I can get everyone who is interested a good, quality, and consistent box. Bare with me as I want to do it right for you guys since there's more than just one or two people interested.

[Dragoncub]

Subscribing to this thread. I may be interested as well. Just got the car a couple of weeks ago, so I want to drive it a little bit first to see if I want to upgrade the sub.

[robokn]

I spoke to my installer and he has done a few of these as an upgrade, not much boot space lost TBH and strengthening is not such a major headache. Happy at the mo
got other things to do before that part

[Mr. Spectacular]

what's the specs? interior volume? mounting depth? diameter of the hole?

Let me clarify the mounting depth I quoted is the minimum depth on the left side of the enclosure due to the unique shape required. A 1/4 in that depth expands to about 9 or 10 inches


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[Chandler]

Nice build! I had a buddy of mine that owns an audio shop here locally fiberglass me a box for the same spot. Love having all my trunk space!

Subscribed. I am interested. I don't have B&O and want a better overall sound quality. This box and amp looks sick.


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[Mr. Spectacular]

Subscribing to this thread. I may be interested as well. Just got the car a couple of weeks ago, so I want to drive it a little bit first to see if I want to upgrade the sub.

You probably will. It's a nice sounding system but if you've had an aftermarket sub before you will likely miss the bass. I held off for a year but love music too much not to fill it out. Curious to hear your thoughts after a few more weeks in the car. Congrats on the purchase!!


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[EHesh14]

Any tips on how you would go about fitting the panel back in that would go over the sub?

[Mr. Spectacular]

Any tips on how you would go about fitting the panel back in that would go over the sub?

i think you could cut mdf the shape of the opening and the mounting whole accordingly Instead of using just a spacer ring. Cover it with what you want and should be good to go.

[S is for Slow]

That looks amazing

[Dirty Jersey]

Correct me if I'm wrong, but those with B&O wouldn't have space in that cubby right? Since the amp is there? I hope I'm wrong and I can trouble you to make a duplicate, cuz I'd love a little more base with the B&O.

I have the B&O sound system and everything was able to be relocated

[Dirty Jersey]

My box from Germany

[the4siswickid]

Is there a way to do this if you don't want to relocate the equipment? In other words, more shallow box and have it stick out a little further????


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[doug97gxe]

My box from Germany

who did your work and where did you get the box

[blackfunk]

Post up man. Already got my Alpine PDX, wiring kit and 10W6 sub ready to go.

[javinos]

Very nice/clean job

[Mr. Spectacular]

Thanks folks for the patience. I've been traveling for work the last two weeks (currently jet lagged in Amsterdam) but just finished ordering everything for a proper mold and building materials. Once stateside I intend to put a finished version together and go from there for those that would like to fix our bass deficiencies!

[13ttaz]

Interested as well Mr. S.

[SteveYem]

Still following along and interested in one of these boxes.

[B18b1ex]

Interested as well, any chance it could fit a low volume 12"?

[cspcrx]

The slim JL TW3-D4 sub, which comes in a 10 or 12 in version, would work nicely here. Very shallow mounting depth so there would be little need to extend to far inward. On the 10in you only need 0.50 cub ft of air space for a sealed enclosure. This is the sub I am looking at for my car for a deck mount enclosure.

[the4siswickid]

Is there a way to do this box without a need to relocate the equipment? We all know our dealers - movement of the equipment AND tapping in will surely give them reason to void our warranty on the already expensive B&O system. It would be nicer if we could use a low profile sub like the JL TW3 and not have such a deep cabinet, OR have it extend just slightly further into the trunk so it doesn't need to be so deep into the alcove. Thoughts?

[cspcrx]

Thats what i would like to see as well.

[blackfunk]

A 12" is overkill. Honestly an 8" would work just fine in this instance. Even the 10" that he has installed currently is at the bottom end of the required space. A well designed box is better than any 12 could ever be in the space allotted. In cars where I've installed these types of enclosures you could never ever go close to max or it'd be rattle city. These boxes need polyfill and massive amounts of dynamat to keep it civil back there.

[the4siswickid]

A 12" is overkill. Honestly an 8" would work just fine in this instance. Even the 10" that he has installed currently is at the bottom end of the required space. A well designed box is better than any 12 could ever be in the space allotted. In cars where I've installed these types of enclosures you could never ever go close to max or it'd be rattle city. These boxes need polyfill and massive amounts of dynamat to keep it civil back there.

Couldn't agree more, based on past experience, but my brain won't let me go any smaller than 10" (no jokes please). That being said, I don't want to relo any of the equipment. I would rather have a modified box in that location. I have yet to see if that will actually work or if the OP can make a box (that I would happily buy) which would just replace the cover of that cubby, the necessary stability for driving and provide the necessary box space for a 10" sub. He would get a lot of play for that. I don't think a lot of us want to move the equipment nor do I think a lot of audio shops will want to undertake that either, especially the ones that Audi recommends.

[blackfunk]

With these trunks the available options are pretty limited. And you know if you have any electrical issues the dealer is pointing right at the install to deny a claim. I'd guess the only other option being on the opposite side where we'd loose the cubby hole. That would be my preferred method, but who am I to stare a gift horse in the mouth? LOL, I'll take what I can get.

[cspcrx]

I spoke to an installer about adding a sub. He said the best option would be an 8in and 10in at most to sound balanced with everything else. He also said the best placement would be to pull the stock sub out of its enclosure. Then mount a small sealed box under the deck with the sub firing through, just like the stock sub. He said from a sound "timing or phase" standpoint the B&O system was designed and tuned this way.

This is where the TW3 comes in as you can make a very thin box that could tuck under the rear deck in that corner and not suck up a bunch of room.

[Deckdout2]

My 10" Hertz with my Audison amp blows my trunk lid off practically. With the right sub and a quality amp, that's all you will ever need with this setup. I'm all about SQL so that's what I'm tuned for, even still the bass is never insufficient.

[doug97gxe]

a sub on each side would be tits

[the4siswickid]

How do you mount a box to fire up through the old sub hole....


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[cspcrx]

Remove sub from its stock mount. Then you mount a sub in a sealed box under the rear deck with the sub firing into the hole where the stock sub would be.

[SteveYem]

Remove sub from its stock mount. Then you mount a sub in a sealed box under the rear deck with the sub firing into the hole where the stock sub would be.

The box would hang off the bottom of the rear deck then?