so i've had an sa 12 in a regular ported box for almost 2 years and its getting to be a bit too boomy for my taste in music now. I was going to just throw it in a sealed box but i'm gonna give this 4th order thing a try.
So far my calculations are 1 cu ft of sealed air space, 2 cu ft of ported air space with 32sqin of port area and tuned just under 50Hz. here's some fun google sketchup pics i made.
oh, and its going to be all birch with biscuit joints. think i'm probably gonna sand it down real smooth and stain it and see how i like it.
vehicle: 00 tahoe/94 honda civic hatch
sub: SA-12 D4
amp: RD 1750.1
1/0 Knu wiring (tahoe)
dc power 230A alt (tahoe)
optima red top (i know. once it dies i'll swap it for an xs d3400) (tahoe)
H/U: alpine 9856 (tahoe)
mainly it stays in the honda. i have an 18" RD alpha in the tahoe that lost a coil and hardly gets used. in the mood to do a little car audio maintenance this season. honda needs some electrical upgrades and i'm thinking about getting a different amp since i just switch the 1750.1 between my two vehicles right now.
pic of rides
ANYWAYS this is my first post as well. Please let me know your comments/suggestions on my box. thanks! -Matt