View Full Version : Some more box design questions

07-02-2009, 05:45 PM
Is a 10" port (78.5in^2) large enough for an APXX 18" on 4kW to not have port noise?
With this port, I plan on making it external, and making it use an elbow. Will this elbow create port noise?
What type of lead screws are usually used for bracing? I'm thinking about using some 5/16" or 3/8", or is that not thick enough?

I plan on running 3 across the plane that is not double baffled, and using a plate to connect the ends and support that side. I know that only fixes the box flexing out, but not in. :\


07-02-2009, 05:57 PM
Help? @[email protected]

07-02-2009, 06:05 PM
Bump. :confused:

07-02-2009, 06:14 PM
But why? D:

07-03-2009, 12:14 AM
Some help would be appreciated, guys.

07-04-2009, 02:41 AM

07-04-2009, 02:47 AM
Dont know why anyone hasnt said anything...I'd be shocked if you got port noise. Just roundover/sand down the edges a bit and you'll be good to go.

07-04-2009, 02:58 AM
I hope, because that's the best I can get with the space I have to work with. :P Whoo for 10" PVC and ducting elbows.

I'm surprised, and yet slightly disappointed as well that no one has responded.

07-04-2009, 08:25 AM
I have a 10" PVC port in a 7cube box with 2 RF T1 15's running 2500 watts. I have 0 port noise. I rounded over the outside port opening but the inside edge is just raw. This box was modified from an old 10 cube box and I couldnt do much inside around the port area.