W Bin barn doors

Hello all,

re-production wrote: Hello all, I recently bought some court acoustics W bins and what to get a bit more output from them,

Well you would, they're known for not having much output at all

so I want to make some barn door horn extensions. I understand that it would be much easier to get another pair of W bins and probably cheaper but I really like the look of barn doors at the bottom of a dance stack.

Each to their own

To calculate the dimensions the barn doors will have to be do I calculate the rate of expansion of the horn and continue at the same rate?

Pretty much

Would a scaled down Levan horn work? (Even though the folding of the EAW w bin it is intended for has a different way of folding)

You would potentially be creating a compound flare rate so that could have some undesirable effects

Finally how much will a horn extension actually add to the sound?

In theory or in practice?
Realistically you get more output from adding a second bin. The barn doors on the Fk1 dance stacks are more aesthetic than they are acoustic... it LOOKS like it's gonna be louder/deeper and so placebo comes in

Edited by RoadRunnersDust - 16 June 2017 at 2:56pm

They have two vents so if I made a horn extension would it be best to cover those? or I guess it would be a fairly easy thing to play around with.

''I recently bought some court acoustics W bins and what to get a bit more output from them"

What drivers are fitted? Court originally fitted 2x JBL e140's to the 15 inch version,and a JBL 2240 in the single-driver 18inch version.

If you have the 2x15's,then fit PD1550's as a modern replacement for the discontinued JBL's.

jbl_man wrote: ''I recently bought some court acoustics W bins and what to get a bit more output from them" What drivers are fitted? Court originally fitted 2x JBL e140's to the 15 inch version,and a JBL 2240 in the single-driver 18inch version. If you have the 2x15's,then fit PD1550's as a modern replacement for the discontinued JBL's.

Jo bg wrote: hi i recon a horn extension would  be a follow up of the horn pattern, a continuation of the horn mouth that summed to the original horn would create a new horn, needing the right flare rate and expansion for the new lenght.   barn doors don't continue the horn, they expand the frontal surface.  the increased output in front derives from increased frontal area and the aquired directivity. look at those new big danley subs...

If you mean the BC series they actually use a different approach, it's four FLH coupled to a boundary that has a particular relationship to the rest of the box dimensions. Tom explains a fair bit here:
http://www.diyaudio.com/forums/subwoofers/262490-another-hopeless-attempt-reverse-engineering-danley-design.html

Doesn't give the game away totally of course but it isn't the same as building a barn door horn extension.