4th order design

[jdmferio13]

Not sure how to ask? But does anyone here use google sketch to design boxes.I got a design from someone and cant seem to figure it out.It has the cut sheet and all I just want it on google sketch with measurements.It will be much easier for me I think.Here is the design for my dc level 4 xl 18's

Edited November 7, 2010 by jdmferio13

[dwright27]

You get it from 8 0 inches?

Looks like the one he did for me.

[dwright27]

Sealed chamber are too big unless you're not running but 500 - 1000 watts .

What's the amps being used, wired at?

Also what's the port area?

Edited November 7, 2010 by dwright27

[jdmferio13]

yeah got it from 80inches.port area is 120sq of port and not sure on how he has the sealed enclosures though.I figured the subs would be hitting the back walls.

[jdmferio13]

amp is a crescendo 3k at .5ohm

[dwright27]

yeah got it from 80inches.port area is 120sq of port and not sure on how he has the sealed enclosures though.I

figured the subs would be hitting the back walls.

I'd use 71 - 91 square inches at the biggest.

As far as distance from mags to back wall, xls mounting depth is 8.25 iirc, but indont know if your depth is from the inside o the baffle or the outside of it.

[jdmferio13]

I'd use 71 - 91 square inches at the biggest.

As far as distance from mags to back wall, xls mounting depth is 8.25 iirc, but indont know if your depth is from the inside o the baffle or the outside of it.

well either its inside or outside they still aint gonna fit.

[dwright27]

amp is a crescendo 3k at .5ohm

After rise you'll prolly see 1500 total IMO.

But it's a good start.

[dwright27]

well either its inside or outside they still aint gonna fit.

If its inside they will.

If the inside is 8"s you would have 9.5 on the outside. Subs mount in the outside ...

[jdmferio13]

I can prolly invert subs help with cooling right.how do you figure the amp at .5ohm to rise only 1500 watts