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Discussion Starter #1
I was going to use my 8 inch Solobaric in the stock subwoofer location but decided it would be easier to just build a box and put it under the pax seat. There is a huge space under there. Many 8 inch subs work well in .25-.33 cubic feet of space. The box to these specs will fit under the pax seat and not take up space for a rear passenger. That's a moot point for me anyway since my babseat is behind the pax front.

I'll give impressions after this weekend. Just need to seal the inside of the box and carpet it.

Obviously an aftermarket amp is required.

Frank
 

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Discussion Starter #4
Mounting depth of this sub is only 3.5 inches. I'm making the depth 4 inches. The box is basically 12 x 12 x 4 internal dimensions using 3/4 MDF. It wont' look pretty 'cause you won't see it. I'll probably just carpet the end that might be seen from the rear seat in black carpt.

I was considering using the CDT EF-8 but had the solobaric 8 sitting in my garage (since 1998 or so!). I could probably do a box under each seat but I don't have the wattage now to do that. I'd be pushing one side of my amp pretty hard.

Frank
 

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BLUE WASABI, (#2 Info Provider)
2008 SG Model D
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9,051 Posts
fmowry said:
Mounting depth of this sub is only 3.5 inches. I'm making the depth 4 inches. The box is basically 12 x 12 x 4 internal dimensions using 3/4 MDF. It wont' look pretty 'cause you won't see it. I'll probably just carpet the end that might be seen from the rear seat in black carpt.

I was considering using the CDT EF-8 but had the solobaric 8 sitting in my garage (since 1998 or so!). I could probably do a box under each seat but I don't have the wattage now to do that. I'd be pushing one side of my amp pretty hard.

Frank
Yeah, I would like to know how you would mount the enclosure...are you just placing it under the seat or do you have actual brackets to hold it secure. I wouldn't want an underseat sub moving around, especially when it could hit some important wiring under there.
 

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scarred from battle
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Is it going to be a sealed box, or ported?

and how are you planning on securing it to the floor?
 

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Discussion Starter #7
Sealed. A ported box of this size wouldn't work well. It would have to be bigger. The solobaric was designed for a small sealed enclosure.

Velcro will hold it. I could make brackets and attach it to the seat mounting points but the hook side of the velcro will grab well on the carpet under the seat. It will be pushed up against the front "bump" under the seat so it can't move forward anyway.

The wiring under the seat is the airbag and the heater. You can bend the tabs up so they are up under the seat. Even if the box slid it would miss the connectors if they are bent up.

Frank
 

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The Sub kit guy
2005 Forester X & XT VF39
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I had a JL Audio 8w6 in a sealed .33 cu ft box under the passenger seat. It didn't stay their long. When I drove and turned up the tunes a bit the wife didn't care for the vibrating seat. However she did liked the sound when she drove. We are moving it into the location of the stock 6x9 sub.

For mounting the box under the seat I used liquid nails and attached a 3/4" piece of MDF under the carpet. I then screwed the box to this board. It was very simple and it held up very well. I ended up screwing my amp into this same board when the sub was removed.
 

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Discussion Starter #9
Nobody is ever my pax seat. If my EWG won't piss my passenger off, I doubt an 8 inch sub will :).

Frank
 

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Harbor Fright
2005 XT
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I ran two 8" Solobarics of the same vintage for years in a previous car- those particular ones insisted that the sealed enclosure be no larger than .33 cu/ft or risk blowing them out...

BTW, they now serve (and well!) as the bottom end of the HT's full-range center channel...awesome subs!
 

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Discussion Starter #12
I finished up the box last night. Just need to mount the speaker in it, carpet the ends, and install. WIll get pics and give impressions this weekend or Monday.

Frank
 

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Discussion Starter #13
I finished it up and it's in. Sounds pretty good. No rattles which is one of the best things. I'll try and get some pics up. Plenty of room under the seat. I'd imagine a passenger would really enjoy it.

Frank
 

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BLUE WASABI, (#2 Info Provider)
2008 SG Model D
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fmowry said:
I finished it up and it's in. Sounds pretty good. No rattles which is one of the best things. I'll try and get some pics up. Plenty of room under the seat. I'd imagine a passenger would really enjoy it.

Frank
Yeah, post some pics;-)
 

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Discussion Starter #15
It looks like a box with a speaker in it :). I'm more motivated to take pics after work than I am during the weekend for some reason. I'm working today so I'll get pics tonite or tomorrow after work. Had to charge the digicamera battery too.

Frank
 

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Discussion Starter #16
Pics of sub.
1) Sub with seat in normal position
2) Sub with seat all the way forward
3) Sub out in the open

Ignore poor carpeting job. I was out of carpet and using scraps. Since it's only visible from the one end if you sit in the back seats, I could have left the rest uncovered.

Frank
 

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Discussion Starter #19
sea-scooby said:
Nice work! It looks good. What do you have pushing it?
An even older amp. :) One side of a vintage 1995 Rockford Fosgate 400X4 Transana (400X4 is the model model number which is actually 4X50 and 2X200 bridged. I'm running it 1X200 for the sub and 2x50 for the rear door speakers).

It's a bit boomy as is. I need to lower the sub level a bit.

Frank
 
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