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death box for spl competition (Read 15689 times)
morph
Ex Member




death box for spl competition
01/22/08 at 19:20:10
 
Hi!, i´m glad i found this forum, i have been working really hard to get my car to the xtreme in spl, so i placed a 1000 wrms amplifier with 2 alpine SW R 1242D subs each one in sealed boxes, last sunday i got in a spl competition and marked 137 db, do you think i could improve this with a death box??, and how would be the right way of placing the 2 subs in, or it would be better to place them in 2 different death boxes?? thanks a lot for helping, and sorry about my bad english.  ;D
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Adrian
Ex Member




Re: death box for spl competition
Reply #1 - 01/23/08 at 09:58:55
 
I would try ported.
It has been used consistently at competitions with great results. Sealed isn't the way to go if you plan on competing...
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morph
Ex Member




Re: death box for spl competition
Reply #2 - 01/23/08 at 20:35:56
 
thanks!!
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aznboi3644
Ex Member




Re: death box for spl competition
Reply #3 - 01/26/08 at 06:34:28
 
Sealed boxes are in no way meant to SPL.

A correct enclosure can get you well into the 140s with the same equipment.

Its all about the enclosure.
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morph
Ex Member




Re: death box for spl competition
Reply #4 - 01/26/08 at 17:58:11
 
bt death box is not sealed, isn´t it???
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Adrian
Ex Member




Re: death box for spl competition
Reply #5 - 01/27/08 at 11:31:54
 
It's a 4th order bandpass, meaning the front of the woofer is in a ported box and the rear is in a sealed box. The ported part acts as a low-pass filter and the box acts rather similar to a sealed box Smiley
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morph
Ex Member




Re: death box for spl competition
Reply #6 - 01/27/08 at 18:56:47
 
mmm...i´m a little confused here, i have heard inverted wedge design was the best until deathbox was developed, i think i´ll have to try both of them, i´m not trying to get the easy answer to the best design for spl, just don´t want to build them both, but i think i´ll have to and give them both a try, i marked 137 db with my system in sealed boxes, i know i can improve this with a ported box, just wanted to buil one instead of start spending a lot of money and time in building 2 boxes, thanks a lot for the post guys, i´ll let you know about the results, thanks!!!
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Adrian
Ex Member




Re: death box for spl competition
Reply #7 - 01/29/08 at 14:23:04
 
Good results in spl and serious competing means a lot of test boxes  :D
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morph
Ex Member




Re: death box for spl competition
Reply #8 - 01/30/08 at 00:53:40
 
thanks.. i know.
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