apxx 18 wall

[tymoto21]

box is 16cf internal after displacements, port has 252sq in, tuned to 37hz, front is 3" thick, port is 1.5" thick rest of box is .75" think, any input?

[mlstrass]

Looks good. Plan on adding some external 2x4 bracing to a box that size. Looking forward to hearing this when it's done...

This for 1 sub or 2?

[tymoto21]

1 18
ive been talking to a guy on termpro who has been using apxx's for a long time and this is what he said works best for the 18 in a wall, i hope its tuned low enough for my liking, should hit hella high though being so big efficiency should be way up.
yeah i will do alot of bracing.

[DDbump]

1 18
ive been talking to a guy on termpro who has been using apxx's for a long time and this is what he said works best for the 18 in a wall, i hope its tuned low enough for my liking, should hit hella high though being so big efficiency should be way up.
yeah i will do alot of bracing.

good luck going lower without ur door falling off

[audioatg]

Is that guy on termpro named Mr Stany. Somthin like that. Id look him up if its not on termpro. He knows his APX subs.


Id say make that box a bit thicker. I have mine. My face plate is five layers thick. And everything else is 1.5 thick. Back is at least 2 inches thick. Do allthread for bracing.

Note Same guy helped me with the design of my box.

[tymoto21]

stany yes thats him. he told me 4" front baffle but i think i can get by with only 3, he said he used the 4" front for his burp frequency but i think i will make one port for db drag/bass race tuned to like 55 and then make this one for daily.
and jake look whos talking about doors falling off, 4 12 off like 7krms tuned to 33hz... :hairtrick:

[audioatg]

Well only thing is when you start going up in power that sub is going to wang as they say. I would make the box as thick as possible now. Rather then redoing it later trying to add thickness.

[DonH]

nice and huge port! also i would add bracing to the walls that are going to be only 3/4". also resin on the inside and fiberglass the corners man!

[iamamp3pimp]

at least 1.5" thick

[tymoto21]

^ well it looks like everyone is telling me to go 2 layers thick all the way around.... soooo i will have to do a little redesigning and get the walls a little thicker.

[audioatg]

^ well it looks like everyone is telling me to go 2 layers thick all the way around.... soooo i will have to do a little redesigning and get the walls a little thicker.

You will be very happy in the long run. Over time with a thin walled box. its going to come apart. When I get time I will send you a pic of my box for the apx I have.

[tymoto21]

very cool. how much power do you have on it? yeah im going to redesign it soon so i can still get the 16cf out of it and have 1.5" all around.