SDC2.5 12" x2 (Sketchup box model)

[ascitiesburn69 10+ year member]

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: . 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.

Click to read more...

 

[stangman67 10+ year member]

Too big, SDC 12's will perform best in about 4.0 after displacements

 

[ascitiesburn69 10+ year member]

~2.3cuft is really too much per sub?

 

[stangman67 10+ year member]

yep, PM DJ, he will tell you so as well

 

[DonH 5,000+ posts]

yeah it is bro 2.3 is to much

 

[ascitiesburn69 10+ year member]

He gave me the dimensions for the box lol wth...

 

[ascitiesburn69 10+ year member]

Anyone wanna refine my design or tell me what to do to fix it?

 

[fasfocus00 5,000+ posts]

everything looks good to me.

 

[moo_awn 10+ year member]

http://www.audioque.com/aq/whatSubs.htm

 

[ascitiesburn69 10+ year member]

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 10+ year member]

Does this look good to everyone? or do i need to do a t port?