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View Full Version : Sa 8" build, opinions wanted!



Qexler
10-13-2012, 11:50 PM
I wanted it tuned a tad low so I went with 32hz, box is .75ft^3.
port specs are as follows, 1.5" wide, 8" tall, and 39" long.
Don't triple check yourself, the box isn't made from 3/4" mdf, instead I am using 1/2" because I wanted to play with the fiberglass and bedliner and with the two I seen no need for 3/4" wood.
Input on box design please!

Spooney
10-14-2012, 12:20 AM
Is this a v.2? Even if its v.1 go ahead and tune it a little higher and save yourself some room and some port length. There is no need to tune that low with these subs. They will have no problems getting low at a 35hz tuning. Hell I had one still sounding decent in a 40 hz tuned box.

TitoThePirate
10-14-2012, 12:24 AM
personally due to lack of cone area i'd tune lower for da lowz.

Qexler
10-14-2012, 12:27 AM
Exactly, I had a good friend once explain to me... Tuning lower will make you feel it more. Rather than have it really loud and do good on a meter. And I am going for an 8 that hits some nasty lows ;] Me and my friend actually have a bet that an 8 cant hit low nor can it hit harder than a jl audio wov3 12" lol... So I'm gonna try and prove him wrong. Very wrong, But the sizing and port area seems pretty optimal?

EDIT: v2 model

Qexler
10-14-2012, 01:03 PM
Any input is greatly appreciated! I always like to know where I can improve.

ThatChevyGuy
10-14-2012, 01:36 PM
aero port should get you louder

kushy_dreams
10-14-2012, 02:34 PM
I metered a sa8v2 in .75 tuned to 34hz and it had no prob getting low, it played near flat, within +/-1db from about 27hz to the mid 50s in a newer Subaru Legacy. Its ok to tune higher, you can still reach the lows.

Qexler
10-14-2012, 02:41 PM
thanks kushy will think about that, and chevy... what port area did you believe was optimal.

kushy_dreams
10-14-2012, 02:45 PM
3inch aero would work best, but you still need 18 1/2 inches of length to get a 35hz tune in .75cu/ft

kushy_dreams
10-14-2012, 02:47 PM
And I would highly advise against 1/2mdf, that stuff splits extremely easy, even when you predrill the screw holes.

Qexler
10-14-2012, 02:48 PM
i may build a secondary aero box currently the box is slot. 1.5" wide, 8" tall, and 39 long. does this seem well in your opinion?

kushy_dreams
10-14-2012, 02:53 PM
Looks good for .75 @ 32hz with 12 sq in of area

Qexler
10-14-2012, 03:09 PM
naw, i already built this enclosure. that 1/2" w
orked fine.

Qexler
10-14-2012, 08:13 PM
My main concern was if my port area was optimal.