My BassHorn VS Martin WSX

Model it using offset driver if you're doing it this way. Try to keep compression low as mykey has said when doing this sort of thing. Otherwise you may be victim to flapping cone disease.

I have the latest version of hornresp and have none of the problems you have - will have a go later - newer versions of hornresp have corrected bass response as you may find. It's not wrong, just more accurate - remember what 0.5 is?

And why are you still calculating in 0.5pi?

That is exactly the horn i am going to build 
Mine is with a 18" driver.

mykey wrote: the area in red is to small, this needs to be deeper, the blue marking should be a solid piece across the width of the cabinet

SO mykey, are you saying that a throat like this will put too much stress on the driver?

Amano - Nice design mate.  Always good to see people trying different things 
My ideas - If you intend to use it in a stack of four then model in 0.5 pi if on its own then 2 pi.
I would say that a single version would be more manageable and more importantly, it will fit through doors!

I would tend to agree with other people that the throat is too small.  The start of the horn is the throat area which is the SMALLEST point after the throat chamber.  I.e. the right hand edge of mykey's diagram above (if its a letterbox design).

Anyways, nice work, get a prototype built!

Matt

Quote from mr McBean:

Imagine a loudspeaker positioned in a corner, but not touching the floor or either of the two walls. Now assume that the floor and the walls are three mirrors. Looking into the mirrors you will see seven images of the actual loudspeaker. One loudspeaker has been turned into eight, hence the use of the term "eighth-space" or Pi/2 steradians to describe a corner location. Acoustically, provided that the dimensions of the radiator and the distance from the walls are small compared to the wavelength, then one speaker radiating into eighth-space is the same as eight speakers radiating into free space. Once again, this can be confirmed using Hornresp.

Hope this helps.

Kind regards,

David

http://www.speakerplans.com/forum/forum_posts.asp?TID=11032&PN=12

great development, comrade.

but i'm afraid it's too big bitch to carry. 

i'm selling out my wsx's crap to build a compact rig as my backbone demands!