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View Full Version : SDC2.5 12" x2 (Sketchup box model)



ascitiesburn69
04-21-2009, 04:09 PM
Ok I've been working on a model in sketchup for a little while and i think i got it right but someone wanna check my port length etc? Heres the pic: [img=http://img13.imageshack.us/img13/4936/audioquesdc2.th.jpg] (http://img13.imageshack.us/my.php?image=audioquesdc2.jpg). I want it to be tuned to 38hz and i'm 99% sure the port length is a little small. 5.3" wide port. and port length is 19.2"ish. Front is double baffled. Box is 5.84cuft net before any displacements and the port plus the wood used to make the port takes up .94 leaving me with 4.9cuft. I am using 2x sdc2.5's which displace .1 each, leaving me at 4.7cuft net after all displacements. Which, in my calculations makes me need a ~21" port length? Is this correct?
Ive also uploaded the skp file so you can have a look around the entire thing if you wish. http://www.mediafire.com/?u2wi4edxzml
Thanks alot guys.

stangman67
04-21-2009, 04:10 PM
Too big, SDC 12's will perform best in about 4.0 after displacements

ascitiesburn69
04-21-2009, 04:12 PM
~2.3cuft is really too much per sub?

stangman67
04-21-2009, 04:27 PM
yep, PM DJ, he will tell you so as well

DonH
04-21-2009, 04:30 PM
yeah it is bro 2.3 is to much

ascitiesburn69
04-21-2009, 04:33 PM
He gave me the dimensions for the box lol wth...

ascitiesburn69
04-21-2009, 06:39 PM
Anyone wanna refine my design or tell me what to do to fix it?

fasfocus00
04-21-2009, 06:42 PM
everything looks good to me.

moo_awn
04-21-2009, 06:48 PM
http://www.audioque.com/aq/whatSubs.htm

ascitiesburn69
04-21-2009, 06:52 PM
Wow i read that page numerous time and never remember seeing the "These volumes include the driver displacement and port volume. You do not need to subtract any occupied volumes." But then again my box would be fairly oversized with current specifications

ascitiesburn69
04-21-2009, 07:09 PM
Does this look good to everyone? or do i need to do a t port?