Building 2 new Cabs!

[Murphys Law]

Hello there!

Since my old, self built Cab just doesn't do it anymore, I decided to gut it out and build two new Cabs from its remains.

Were talking about a set of two Celestion BN12 300 X8 which I put into a 2x12 cab about two years ago.
heres the data sheet: http://professional.celestion.com/ba...BN12-300X8.pdf
On that build I kinda forgot bracing, so the Cab is boomy.

My plan:
Build 2 1x12 Cabs for better sound, better portability, and overall awesomeness.

Construction:
1/2" birch plywood, bracing, about 21.5 x 15 3/4 x 15 3/4 in total size.
internal volume will be about 2.1 cu ft.
vented cabinet, tuned to about 48hz

I ran the math in WinIsd and the simulation showed the -3dB point at about 53hz and a slight bump of under 0.5dB in the 100-120Hz region.

Now a question to the guys with experience:
Will this result in a fair sounding cab?
I know, without a tweeter/midrange driver the high freq response will not be great, but I liked the way my old cab sounded in the high frequency...
Did I forget anything? Any big mistakes?

Planned time for the build is next weekend. WILL show pics of course .

Best,
Karl.

[Murphys Law]

Friday evening bump!

Would be happy if anyone chimed in here

[DukeLeJeune]

Hi Murphy,

Your chosen box size and tuning frequency look good to me. I think you juggled the tradeoffs very well, and can't offer any advice on tweakage.

I don't think your design will result in a fair sounding cab. I think it will result in a very good one. Or two...

With both cabs sharing a square footprint, if you ever need really wide-pattern coverage, you can place one atop the other firing off at 90 degrees relative to one another.

[Murphys Law]

Thanks Duke!

We'll see how it turns out .

I figured if I ever miss some high freq response I could always build a 6" cab with a high pass and place it ontop of this stack.

[Murphys Law]

Hey!

I planned it up in Sketchup, this is what its going to look like.

Please excuse the bright colors, but I like being able to tell parts apart. .

Left is the cab closed, right is the front removed to show some bracing.

[abarth]

Hi, how is it going with the build? I'm about to build two 2x12 with Celestion BN12-300X - here's my build thread on a Swedish bass forum via Google translate: http://translate.google.se/translate...D6%26t%3D63027