View Full Version : Can someone help me with an aero port?>>
06-29-2008, 03:42 PM
I want to use and aero port, but the calculator on PSP is confusing to me, so here I am.
The dimensions of this box I am building are:
32.5W x 15.5H x 21D
These are EXTERNAL DIMENSIONS and I am using 3/4 in. birch
Disp. of sub: 0.31
I want to tune at 30 hz.
How do I go about doing this? I want to keep as little port area as I can, but enough.
06-29-2008, 04:12 PM
What kind of sub? This is the only way to determine how much port area is enough.
Without knowing this I'd say a single 6" port at 16" or dual 4" ports at 15.25" to get you started.
06-29-2008, 04:16 PM
Well it's for an RD Alpha.......here are the T/S specs. and I want the box more for SQ than SPL hence the "less port area need."
15" D2 (double spider)
RE 3.6 ohm
CMS 0.0874 MM/N
BL 19.22 TM
SPL @ 1W 91.55 DB
VAS 98.94 L
XCOIL 53 MM
Cutout 349 MM
Mounting Depth 230 MM
Displacement .31 cu.
06-29-2008, 04:27 PM
How about Le, Xmax and Pe... Do you have these? I'll whip something up on WinISD, if so.
06-29-2008, 04:53 PM
Well....Pe would be 2000.
The Le and xmax I don't have....
06-29-2008, 05:13 PM
Also.....I've run my specs through Box-Port Design and all I need to know is the how, what, where, and so forth for the port.
06-29-2008, 05:18 PM
WinISD isn't jiving with the ts parameters you've provided...
If you have a box building program, doesn't it allow you to figure ports?
Either of the two I listed are tuned correctly, but I'm not able to calculate the Vent mach without WinISD cooperation. That's my only concern.
I guess I can't be of much more help. Good luck.
06-29-2008, 05:22 PM
Thanks for your help BEAV.