Subwoofer Box Question
- Thread starter mysticsvt
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This was an interesting read. Being that my sub is just over what the box requires a modest amount of poly fill might be beneficial.
https://knowledge.sonicelectronix.c...ccessories-and-installation/what-is-polyfill/
https://knowledge.sonicelectronix.c...ccessories-and-installation/what-is-polyfill/
putting a speaker in a smaller than designed box will make the response roll off slightly faster below Fs. in other words, bottom end will be slightly cut off and it can sometimes make for a boomy sound. the upside to this is that you slightly increase potential power handling capabilities.
adding polyfill can sometimes make a box produce a slightly deeper tone, but its subtle. rue of thumb is 1lb for every cubic foot.
if you already own the sub and the box, add just under a pound of poly and just go with it. EQ the bottom end and pay attention to the 50Hz+area, you may need to cut frequency response above that to stop the boomy sound. itll probably be ok though in all honesty.
adding polyfill can sometimes make a box produce a slightly deeper tone, but its subtle. rue of thumb is 1lb for every cubic foot.
if you already own the sub and the box, add just under a pound of poly and just go with it. EQ the bottom end and pay attention to the 50Hz+area, you may need to cut frequency response above that to stop the boomy sound. itll probably be ok though in all honesty.
It was tuff finding a good sub at .087 to be honest. I can easily buy another if I find one that would compliment the box better. The 1.15 was the lowest so I'm hoping the polyfil will help in that aspect.
Filling the box makes the driver see it as slightly 'larger' than it actually is, so it's likely to help a bit.
-edit- you could try to adapt it to a 10 or 8 inch driver, to get some more wiggle room, it looks to be a 12 inch driver?
-edit- you could try to adapt it to a 10 or 8 inch driver, to get some more wiggle room, it looks to be a 12 inch driver?
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Ran by the stereo shop today. Seems they have to run the 500 rms sub at 2ohms which is 1000 watts. They are not thrilled about that as they said it will not hold. They recommended changing the box up and adding more air or going with a larger sub, an ARC Audio 12" which is 900rms. Going ahead with the install and I can change the box or sub up if I am not happy or blow this one.
12" Kicker Solobaric only requires .88 cubic feet. (It's square though)
Most of those "custom" boxes are for looks only. They don't really care what the internal volume is when they manufacture them. They just want them to look good.
Build your own box, it's much more satisfying.
the problem is that the driver itself is going to take up additional space in the enclosure so that E series or SA sub is not going to see .87cf, its going to be looking at .7cf most likely. now youre nearing half the recommended minimum and at this point, below about 50Hz, its going to roll off pretty hard. that means youre going to have to eq the hell out of it to get it flat sounding again and that means its going to see a lot of unnecessary cone movement for the power.
does the box have to be vehicle specific? if youre buying prefab boxes, id recommend staying with a sealed box as you really need to build a box to compliment the sub for best performance. if if doesnt need to be vehicle specific, then theres tons of prefabs to chose from with more volume for a 12" sub.
heres two non vehicle specific boxes id recommend, in no order:
http://belvaproducts.com/mdfs1215-1-5-cu-ft-single-12-sealed-mdf-subwoofer-enclosure/
3/4" MDF construction
polyfill lined
1.5cf, 1.4cf when loaded
16"L x 17"D x 13-1/2"H
http://www.woofersetc.com/c-60-encl...w7-12-ground-shaker-12-single-sealed-box.html
3/4" mdf construction
double face (overkill on a small box like this imo)
1.3cf, 1.2cf loaded
16.5"L x 18.5"D x 16"H
does the box have to be vehicle specific? if youre buying prefab boxes, id recommend staying with a sealed box as you really need to build a box to compliment the sub for best performance. if if doesnt need to be vehicle specific, then theres tons of prefabs to chose from with more volume for a 12" sub.
heres two non vehicle specific boxes id recommend, in no order:
http://belvaproducts.com/mdfs1215-1-5-cu-ft-single-12-sealed-mdf-subwoofer-enclosure/
3/4" MDF construction
polyfill lined
1.5cf, 1.4cf when loaded
16"L x 17"D x 13-1/2"H
http://www.woofersetc.com/c-60-encl...w7-12-ground-shaker-12-single-sealed-box.html
3/4" mdf construction
double face (overkill on a small box like this imo)
1.3cf, 1.2cf loaded
16.5"L x 18.5"D x 16"H
Yeah, that's a great way to fill up your trunk.
If you're willing to spend that amount, just get the jl stealth box for the trunk. Fits in the right side area of the trunk.
Also, the stealth box contains a 12, what you showed is a 10".
Also, the stealth box contains a 12, what you showed is a 10".
Well the install is done and I have to say I am rather happy. He was rather concerned with sub and where as it's a 500rms DVC it's wired at 2ohms and 1000watts going to it. So when I left I could barely hear the sub but turn it up a bit when I got home and now it pounds. Very happy with the footprint the box and amp have left which clears up room for a 6 channel in the wheel well of the truck for my mids/highs. I may search for a 750rms or higher sub with a mounting depth of 7" or less that is closer to the .87 box than this 1.15 Sundown.
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