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tymoto21
03-17-2009, 05:13 PM
im doing a wall with 2 apxx 18's in my car. how does this look?
http://i293.photobucket.com/albums/mm75/poopy521/wall.jpg
http://i293.photobucket.com/albums/mm75/poopy521/wall2.jpg

port is 31.75 tall X 12 wide X 16 long. should be right about 34hz.
the box in the front is 54wide x 34tall, and tappers back to 38 wide in 15". then it is 38" wide for 25". then the top is 34" tall for 20" and tappers down to 20" tall in 20".... kinda weird wording.... either way it should be about 25cf total. any idea's
would the port work well like this at the angle?

snoopdan
03-17-2009, 05:18 PM
yeah it would work, but I can tell you now that's tuned fairly high. My wall is almost that size and ive got 2x length on the port to tune to 32 hz. And I have pretty much the same subs.

tymoto21
03-17-2009, 05:19 PM
i ran it through some port calc i google i will double check with the formula.

tymoto21
03-17-2009, 05:24 PM
ran it through calc on 12volt.com and i get 36hz. i could lower the port area from 380 to 310" and i get 32hz. any idea's?

tymoto21
03-18-2009, 10:43 AM
anyone else ant input?

FootlongSam
03-18-2009, 11:27 AM
not real good with sketchup

snoopdan
03-18-2009, 11:29 AM
ran it through calc on 12volt.com and i get 36hz. i could lower the port area from 380 to 310" and i get 32hz. any idea's?

uhm, that doesnt sound right...it should go up with shorter port length.

FootlongSam
03-18-2009, 11:31 AM
read that again, he said lower Port Area.

ngsm13
03-18-2009, 12:28 PM
Too big...

nG

tymoto21
03-19-2009, 02:47 PM
^???
too big?
i got one in 13cf right now.... only 100sq" of port.
and yeah when you lower the port area the length will shorten.
16.7" for 34hz with about 340 sq" of port.

slumpin18
03-19-2009, 02:49 PM
Too big...

nG



times 2

by about 10 cubic feet.

Mr. Slate
03-19-2009, 02:51 PM
What type of vehicle?

tymoto21
03-19-2009, 03:11 PM
its a ford excort hatch.
what would a good size be for both 18's walled?

tymoto21
03-19-2009, 09:22 PM
any input on the thing being to big? (thats what she said)
and will this port work fireing toward the drivers door? my doors already flex like a mother fvcker.

tymoto21
03-20-2009, 10:42 AM
any input? i wana get this thing going?

ngsm13
03-20-2009, 01:52 PM
I built a wall for two 18's... before. It was completely over-built and overkill...

It was ~23cubes NET... WAY TOO BIG.

It hit lower than anything, but it was just plain not loud. My 6 10's were noticeably louder...

nG

fearof85
03-20-2009, 04:06 PM
Run them in 14 cubes tuned to 34 hertz w/280 sq. inches of port, call it a day.

Drew

tymoto21
03-20-2009, 05:45 PM
^ do you guys have experience with the apxx's?
and as far as not loud my 18 in 13cf did 142@ 22hz. thats not a bad score at all.
reminder this is a daily ground pounder not a burp car.

jdawg
03-20-2009, 05:51 PM
that looks like a real pain in the *** to build

bball09124
03-20-2009, 05:56 PM
^ do you guys have experience with the apxx's?
and as far as not loud my 18 in 13cf did 142@ 22hz. thats not a bad score at all.
reminder this is a daily ground pounder not a burp car.

142 @ 22 hz was your peak? Apxx's weren't designed to put up good numbers below 30 hz. If you only did a 142 with an 18" a few thousand watts that is a bad score.

fearof85
03-20-2009, 06:06 PM
If you want to pound out the lows and only the lows, then 23 cubes sounds good. Anything over 40 hertz will sound like ***, not to mention want to jump the woofer out of the basket.

Drew

tymoto21
03-21-2009, 12:58 AM
no it wasnt peak, and that was music. i will probably make it 20gross now and do subs bottom port on top, it will be alot easier to fit it in, and wont need all the angles like this one.

ngsm13
03-22-2009, 02:13 AM
That's they way the failure wall was made too...

nG

tymoto21
03-27-2009, 07:17 PM
kk well what would you sugest?
i pmed one of the guys on here and he has his two in 16cf to 33hz. i think that 18cf after displacement will be good for me. subs on bottom port on top. then make interchangable ports for 30hz and like 55hz for burps. opinion ngsm13?

also one other quesion. i will have to build the wall in the car, can i glue all the parts together in the car, and use like 1/8" angle iron and screw that to the joints to give a good hold. or what way would you guys secure your wall together from in the car?

mlstrass
03-28-2009, 01:57 AM
Design it so you can reach the places that need to be screwed together. Might have to pull the seats/console to slide it forward to reach the screws on the side...

tymoto21
03-28-2009, 12:40 PM
ohhhh ok i could just take my front seats out and slide the box forward to get the screws on the side.
well unless someone comments i will prob start building the wall in a couple weeks. i gota wait for my amp, then im gona wait for my apxx recones to get in.