saltyjesus 10+ year member
Senior VIP Member
I recieved two presents for christmas, a HUGE subwoofer box from my dad (that he custom made for two really bad radio shack subs), and two 12" rockford 8 ohm component subwoofers.
The box has two chambers, each being of approximately 4 ft^3.
Here are the subwoofer specs:
8 OHM single Voice Coil
FS (hz) 25
QTS .49
VAS0cu.ft. (liter) 6.10 (172.7)
Xmax-in.(mm) .302 (7.67)
SPL (dB @ 1w/1m) 89
RMS power 150
Peak power 400
they reccommend using a 2 cubic foot ported box with a port of 4"x10.75"
tuned to 35 Hz
My box is twice the cubic volume, so how what port tube should I use?
I really tried to figure this out, but I am not a math person and my dos software and 20 year old books didnt help. I really appreciate your help in advance.
The box has two chambers, each being of approximately 4 ft^3.
Here are the subwoofer specs:
8 OHM single Voice Coil
FS (hz) 25
QTS .49
VAS0cu.ft. (liter) 6.10 (172.7)
Xmax-in.(mm) .302 (7.67)
SPL (dB @ 1w/1m) 89
RMS power 150
Peak power 400
they reccommend using a 2 cubic foot ported box with a port of 4"x10.75"
tuned to 35 Hz
My box is twice the cubic volume, so how what port tube should I use?
I really tried to figure this out, but I am not a math person and my dos software and 20 year old books didnt help. I really appreciate your help in advance.