custom box help

[Jerm1400]

I built a box for two American Bass TNT 12's tuned to 33hz @ 4 cubic feet with .75 MDF. I have them on a little pioneer gm d8604.They probably are getting about 300 each. When I turn it up full tilt the box flexes at the top towards the center and I hear noise inside the box. I braced the box with 1.5 inch wood front to back & top to bottom. Can some tell me what's going on? I

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[Jerm1400]

Re: (no subject)

 

[Tantricz]

Add pics of the box

 

[Jerm1400]

Can't right now I'm on my phone but i will once i get home

 

[snyderd758 10+ year member]

is it slot ported or aeroport either way that is what I would suspect. either the wood comprising your slot port is vibrating or the aeroport is.

 

[Jeffdachef 5,000+ posts]

you add any center bracings? Glued screw/nailed and C Clamped?

 

[Jerm1400]

https://mail.google.com/mail/?ui=2&ik=e1f7f42f92&view=att&th=146de6d815ea7325&attid=0.1&disp=emb&zw&atsh=1

 

[Jerm1400]

I braced it from front to back and top to bottom with 1.5 wood and I used spax screws

 

[snyderd758 10+ year member]

none of your links are working. do you have photobucket?

 

[Jerm1400]

 

[Jerm1400]

is it slot ported or aeroport either way that is what I would suspect. either the wood comprising your slot port is vibrating or the aeroport is.

it's a slot port 4 cubic feet tuned to 33hz with 16 cubic feet of port area

 

[Jerm1400]

none of your links are working. do you have photobucket?

No I don't

 

[snyderd758 10+ year member]

I still cant see the links maybe its me? 1.5 inch wood shouldn't flex only instance I can think is maybe you split the wood when driving the screw?

 

[bluemarvin3030]

I built a box for two American Bass TNT 12's tuned to 33hz @ 4 cubic feet with .75 MDF. I have them on a little pioneer gm d8604.They probably are getting about 300 each. When I turn it up full tilt the box flexes at the top towards the center and I hear noise inside the box. I braced the box with 1.5 inch wood front to back & top to bottom. Can some tell me what's going on? I

Hey dude, I wanna see this box. I got my second TNT and I about ready to build my ported box. Don't forget to make a YouTube vid.

 

[Jerm1400]

I still cant see the links maybe its me? 1.5 inch wood shouldn't flex only instance I can think is maybe you split the wood when driving the screw?

one of them did split the wood but only a small piece it has two other screws holding it down. The caulk around looks cracked and when I pull on it it really doesn't move.

 

[Jerm1400]

Can you see it now?

 

[Jerm1400]

 

[iLL Ridge 10+ year member]

Box dont look half bad. Not sure why you're flexing.

How does the top panel of mdf fit?? Is it tight and even?

 

[Jerm1400]

Box dont look half bad. Not sure why you're flexing.How does the top panel of mdf fit?? Is it tight and even?

Thanks //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif my first time. And it's tight but slightly uneven I cut the wood with a skill saw. But I'm confused //content.invisioncic.com/y282845/emoticons/confused.gif.e820e0216602db4765798ac39d28caa9.gif because it only flexes where the bracing is

 

[Jerm1400]