Help cpillar Top port wall issues

[Rich Schenk]

Installed a couple weeks ago my cpillar slide in wall For 6 ab xfl 1222s on 2 dc 5ks.

3 top on 1 dc5k @1.3 ohms  and 3 bottom on another dc5k @ 1.3 ohms.

Have blown the bottom middle woofer now twice.

First time thing I went to hard on it being that it took months to finish and killed the coil.

2nd one was rushing to get it playing for slammology. Broke it in for 3 hours @ 40 and 30 hz on a dc5k @ 4ohns 900 something watts

Went to install it the next day screwed up poked surround like a idiot. Fixed it with shoe goo

Played fine all weekend till my 4th demo at slammology then that infernal slinky sub sound.

What am I doing wrong?

1. this is my first wall

2. First time running 6 subs

3. First time running this kind of power and running 2 dc5k to 1 enclosure

4. Set amps with dd-1 to older 5k cause seemed to be lower of the 2 amps. Set with -5 db track

5. Gain matched both amps to the older 5k with cc-1

6.slide in wall is top L port 

7. Almost seems like bottom 3 subs move more then top ones ( but not 100 percent on this )

5 broken in subs and one new one as soon as I buy another one from ab.

 

Please help I am pulling my hair out trying to figure this out and can't afford to keep replacing subs.

Now have 5 good and 3 bad subs.

[MrSkippyJ]

is the sub that keeps blowing directly in front of the port opening inside the enclosure?

[Rich Schenk]

Yes bottom middle sub ( newest sub)

[Rich Schenk]

[twizt3dfuc]

the only difference i see is the way the braces set at the bottom set as opposed to the top, surely it wouldnt make a difference but spl makes zero sense. Possibly add a few 45s butted together at the mid way down of the boxes back wall.

>   --- so it looks like that

would leave a little for the bottom subs to load off of but not a ton

 

[Rich Schenk]

Any veterans have any ideas on this?

[Triticum Agricolam]

That's weird.  The first thing you might try is making a could wedge micrometers (all you need is some note cards and some tape), then you can check and see if you are getting different amount of excursion. 

 

[Rich Schenk]

I know this is a old thread but added wood between braces 1 1/2 thick 4in deep by whatever the measurement is between the bracing bottom sub acts fine no more issues. Top left sub (newest sub blew coil) also 3 newer subs 3 older silver subs.

This is what it currently looks like

Now for my question should I or should I not add wood separating woofers top and bottom 1 1/2 thick wood 6in deep x whatever the space is from left to right. ( to separate the subs from each other) or is this unnecessary box builder told me it would only raise tunning by about. 5hz which I'm tunned to 29hz. Just don't want to have issues after mounting 60 pound woofers then have to pull them out again. Please any help on this would be appreciated Ty.