Started Speaker Box
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Joined: May 2001
Posts: 525
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From: Ames, Iowa, USA
Car: 1989 Pontiac Firebird Formula 350
Engine: 350 TPI
Transmission: 700r4
Started Speaker Box
I finally got around to building my speaker box. So far it is just the bottom part of the box. The top part is going to be fiberglass and I need to get the speakers home to make the speaker rings and install them so I know the angles they will be sitting inside the box so I can lay the fabric over and start fiberglassing but that might have to wait until spring since it is starting to get a little cold here. Here are the pics of the box so far.


Thread Starter
Senior Member
Joined: May 2001
Posts: 525
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From: Ames, Iowa, USA
Car: 1989 Pontiac Firebird Formula 350
Engine: 350 TPI
Transmission: 700r4
I really shouldn't have too much trouble seeing out the rear window since it doesn't sit up to high and with the subs it will be a bit higher but not enough to block my view. Even if it does, I do have a rear camera installed to help with this as well
Here are the subs that will be going into the box once I get the top done. They need to be cleaned up a bit since they have been inside my other car for quite a while.


Now that I have these I can start to figure out the angle to have them in the box before I can start fiberglassing it all.
Here are the subs that will be going into the box once I get the top done. They need to be cleaned up a bit since they have been inside my other car for quite a while.


Now that I have these I can start to figure out the angle to have them in the box before I can start fiberglassing it all.
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Joined: Dec 2003
Posts: 722
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From: abbotsford, bc
Car: 83 z28
Engine: 300hp 355
Transmission: T5
magnet size doesnt mean too much as far as sub performance unless they're abnormally small.
for 15s those are pretty small magnets though. are those mtx 4000s?
for 15s those are pretty small magnets though. are those mtx 4000s?
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Thread Starter
Senior Member
Joined: May 2001
Posts: 525
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From: Ames, Iowa, USA
Car: 1989 Pontiac Firebird Formula 350
Engine: 350 TPI
Transmission: 700r4
No they are 6000 series. I had 9 of these in my daytona and hit 154.1 dp in competition. The magnet might be small but the subs still sound good to me.
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Joined: Oct 2002
Posts: 437
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From: Huntington beach, CA
Car: Camaro
Engine: 5.slow
Transmission: 5 speed manual
Thats kinda how my curent box looks and it doest make it hard to see out the back suprisingly, but it does make it hard to store anything large back there if you need the space
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Joined: Dec 2003
Posts: 722
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From: abbotsford, bc
Car: 83 z28
Engine: 300hp 355
Transmission: T5
ive got two mtx 8000 15s in my cutlass. 500 rms subs have been taking 1250 rms each for about 3 months now.
sound half decent and get fairly loud...there are better subs out there but these are decent. Traded some shorty headers and exhaust for them in a box that i designed. 6.7 cubes tuned to 28 hz for the pair
sound half decent and get fairly loud...there are better subs out there but these are decent. Traded some shorty headers and exhaust for them in a box that i designed. 6.7 cubes tuned to 28 hz for the pair
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From: Long Neck, De
Car: 2002 SS
Engine: Ls1
Transmission: T56
Axle/Gears: 3:42 posi
thats pretty nice box.. not my choice of subs tho..i'm gunna be doing what ur doing except a wall all the way up to the window flush 2 15"S ported
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