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2 subs facing one way the other facing the back?

 

intensive care
Unregistered guest
well i have 2 15 ported and i want two more i dont have a back seat now but still have a good 4 somthing feet of trunk if i put another box the same as the first one but firing into the back of the car will it sound rite? will the sub sound rite? or will they be out of phase? becouse the frist one not hiting any thing just firing rite into the cabin and the other will be hiting the back of the car?
 

Gold Member
Username: Glasswolf

Wisteria, Lane USA

Post Number: 7974
Registered: Dec-03
phase can be corrected
cancellation is going to be your bigger issue
 

intensive care
Unregistered guest
how would i go about fixing it?
 

Silver Member
Username: Zacdavis

Beloit, Wi

Post Number: 142
Registered: Dec-03
is it possible to fire all 4 subs "up"?
 

intensive care
Unregistered guest
no room, i like the way the 2 15 ported firing into the cabin i just want to step it up with 2 more.
 

Gold Member
Username: Glasswolf

Wisteria, Lane USA

Post Number: 7989
Registered: Dec-03
if you want to use all 4 and can't fit them firing the same way, consider going isobarik.
 

intensive care
Unregistered guest
isobarik. i dont know that box shape? could you explain.
 

Silver Member
Username: Tbolt

Collipark, GA

Post Number: 189
Registered: Dec-04
Isobarik, is when you have 2 subs facing each other or away from each other in the same box, but it allows you to make a smaller box than with one sub by itself.
 

Silver Member
Username: Tbolt

Collipark, GA

Post Number: 190
Registered: Dec-04
One more thing, the speakers hve to be wired out of phase so you get like a push-pull type movement.
 

intensive care
Unregistered guest
hows it sound? i have two 15 l5 kickers in a 4.5 box and i am runing for spl? and i need 2 more trying to rais the db not lose any.
 

Silver Member
Username: Tbolt

Collipark, GA

Post Number: 191
Registered: Dec-04
I'm not sure how it sounds. I'm sure glass knows though.
 

Gold Member
Username: Glasswolf

Wisteria, Lane USA

Post Number: 7997
Registered: Dec-03
isobarik:

http://www.jlaudio.com/tutorials/isobarik/index.html

 

Gold Member
Username: Glasswolf

Wisteria, Lane USA

Post Number: 7998
Registered: Dec-03
isobarik enclosures sound very nice. I did quite a few in the past. did two 12" subs isobarik, vented, clamshell style in a good friend's accord and it sounded great.
 

intensive care
Unregistered guest
after reading that page i will just try with all my mite to fit 4 15 ported facing the cab ... but thanks alot for ideas.
 

Gold Member
Username: Glasswolf

Wisteria, Lane USA

Post Number: 8009
Registered: Dec-03
why do you need that many 15" subs?
"more is better"?

not always the case.
 

intensive care
Unregistered guest
i have them and the stuff to run them and i dont feel like selling them i know i wont get my money back....so use them ..
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