Vent for BTL'S

[04yzfr1 0]

2 18in btl's fully loaded

12 cuft

tune 34hz

Port

wide 18.5 in

height 5 in

lenth 10 in

That is 185 sq in

12 x 15.42 = 185.04

right? thanks

[04yzfr1 0]

anybody just looking for input thus is the last of my build

will this port/vent work

[ford302redneck 15]

Length has nothing to do some port area.

It would be 18.5 x 5.

WxH=port area.

[04yzfr1 0]

will have to re think it ..... thanks

what do you think on port...

Edited March 9, 2008 by YZFR1

[shizzzon 461]

if you have calculated all displacements properly including port displacement and wood thickness of port displacement, a port of-

18.5" wide

10" tall

26.4" long

would work for 34hz.

The dimensions are for a slot port(one that shares walls of the enclosure).

It is important to know this because if you make a port where the port doesn't share the walls of the enclosure then the beginning acoustical length will be shorter resulting in a slightly higher tuning, probably no more than 1-2hz though if you are inaccurate.

[04yzfr1 0]

Thanks i dont know if i was going to use a slot port or porting it out just below the subs.

looking for ideas though, what would perform better just getting read to start the port and ideas can be changed, please let me know

[shizzzon 461]

well, the best port would be flanged at both ends and that's typically circular ports.

If this is for daily driver, it really doesnt matter. You apparently have enough space to do a slot port so buying parts for flanged ports may be a waste of money.

[04yzfr1 0]

cool thanks think i will do the slot port, this is a weekend car only , and this is also a wall with one chamber