I Give Up... Please Help

[Slo_Ride 5,000+ posts]

I've been trying to design a box for my Blazer for the last three days and I'm struggling. I mean I can't even think straight anymore. So I'm asking if anyone wants to help? I want a box 32" wide, 19" tall, and however deep, tuned to 35hz. I'm having the most difficulty with facing the sub up with the port firing to the rear. I just can't seem to get it right, I don't know. The sub is a 15" with 14mm of xmax and .21cuft displacement. If you need any more information feel free to ask. Thanks.

Daniel

Sorry forgot to say 3.5cuft @ 35hz

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[traksta15 10+ year member]

have u checked moe's box plans sticky??

 

[Slo_Ride 5,000+ posts]

have u checked moe's box plans sticky??

Yeah I did but there's only one for 3.5 @35hz and I also want the sub firing up with the port towards the back.

 

[Slo_Ride 5,000+ posts]

Anybody, I'd like to get this built in the morning?

 

[xluben 10+ year member]

http://www.subwoofertools.com/forum/ported-box.asp?Ew=32&Eh=19&Dia=9&Xmax=14&Vd=.21&NumW=1&Vb=3.5&Fb=35&Qts=&Vas=&Fs=&CE=0

just put it in the blazer with the port rear firing and the driver anywhere on top.

 

[Slo_Ride 5,000+ posts]

http://www.subwoofertools.com/forum/ported-box.asp?Ew=32&Eh=19&Dia=9&Xmax=14&Vd=.21&NumW=1&Vb=3.5&Fb=35&Qts=&Vas=&Fs=&CE=0
just put it in the blazer with the port rear firing and the driver anywhere on top.

Thanks, I did that exact same thing but the port is only 2.5 " wide. Won't there be a lot of port noise with it being so narrow?

 

[2loud4u 10+ year member]

What kind of sub?

 

[Slo_Ride 5,000+ posts]

What kind of sub?

Soundstream T4 15"

 

[xluben 10+ year member]

it uses xmax, driver size, and tuning frequency/box volume to determine what the port velocity will be and makes the port large enough that there shouldn't be any port noise.

if you think you need more port area just change the xmax number. here's an example of how to get plans for a similar box with a 4" wide port:

http://www.subwoofertools.com/forum/ported-box.asp?Ew=32&Eh=19&Dia=9&Xmax=22&Vd=.21&NumW=1&Vb=3.5&Fb=35&Qts=&Vas=&Fs=&CE=0