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View Full Version : bp box for 2 L7 12's what do u think



tgclark84
11-19-2008, 12:17 PM
First off this will be my first bp box, I 've done my sharre of sealed and ported but I thought what the heck Ill give this a try. Equip is 2 L712's and they will be ran by 2 brutus 2608d's. The vehicle is a 89' s-10 truck. The box will be in the bed with a blow through under the window line. The truck is bagged so I have room only to the knotch cover. 55x15x25 is what I have to work with. This is just going to be a daily box but on occasion it may go to a comp.

Heres what I was thinking of tring.
Sealed 1.25cuft per sub
ported 6.0cuft with 120sqin of port to 50hz
The subs would be on opposite sides of the bed firing at each other.
So what do you guys think? Any input is very much appreciated.

GAM3OVR
11-19-2008, 12:18 PM
too much power?

tgclark84
11-19-2008, 12:51 PM
power can be controlled

lincolntc690
11-19-2008, 12:53 PM
be careful, harder to hear distortion/clipping in a bp set
up

GAM3OVR
11-19-2008, 12:56 PM
wasting 1 amp

One 2608 would wang those with more then enough juice.

tgclark84
11-19-2008, 01:06 PM
[QUOTE=lincolntc690;5448905]be careful, harder to hear distortion/clipping in a bp set
up[/QUOTE

I have an o-scope and I know how to set the gains on an amp so thats not a problem.

What about the box designs?

tgclark84
11-19-2008, 05:34 PM
Anyone have any input?

groundpound4200
11-19-2008, 06:33 PM
TSGP can probably help you. I think he has some experience with 4th orders

80INCHES
11-19-2008, 09:03 PM
do 2.5^ft3 sealed rear and 3.5^ft3 front with 90square inch ported area tuned to 56hz

80

tgclark84
11-19-2008, 11:46 PM
do 2.5^ft3 sealed rear and 3.5^ft3 front with 90square inch ported area tuned to 56hz

80


Since I cant put the subs in the same sealed part of the enclosure they will have to be in seperate sealed enclosures. Should I do them both in 2.5^ft3 each or split what you said and do each in 1.25^ft3 firing into the 3.5^ft3 at each other?