Or carve it out of glued up blocks of XPS, seal it with glue/epoxy, and add a block of plywood at the throat to give mounting screws for the CD to bite into.
I can get bulk epoxy pretty cheap, so I could make a mold, and encase the back of the foam horn in epoxy to give it some weight.
Still all 3 drivers on OB.
I put the speaker 2m away from the wall on one side, 5m to the other side, and there was about 4m behind the speaker... back reflection was pretty far away!
Mic was about 1m in front of the speaker, I tried to keep that distance at all angles.
It looks mighty flat indeed.... I re-did all measurements just in case, same results.
Probably why the sweet spot is so wide.
On a side note, it's the first horn I ever liked! Probably the open back makes it more airy. I never liked horns that shot the music at me. The radiating back wave makes it a lot better, to my ears anyway.
I put the speaker 2m away from the wall on one side, 5m to the other side, and there was about 4m behind the speaker... back reflection was pretty far away!
Mic was about 1m in front of the speaker, I tried to keep that distance at all angles.
It looks mighty flat indeed.... I re-did all measurements just in case, same results.
Probably why the sweet spot is so wide.
On a side note, it's the first horn I ever liked! Probably the open back makes it more airy. I never liked horns that shot the music at me. The radiating back wave makes it a lot better, to my ears anyway.
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How about trying a horn on the back too?
It doesn't have a horn, but it does have "wings" at the back. The thinking was to not disturb the back wave from the SB65 with the back wave of the woofers. Wishful thinking? maybe....
I don't like the square corners, so, I want to round out the corners.
Your problems with phase measurements may be caused by the very nature of a racetrack design when used horizontal as you have done.
Think of the racetrack as minor horns.
This is also why you have a very large sweetspot.
If you can, try a quick version with the racetracks vertical. Yes, your c-c is huge but then you can avoid that problem, you already have ... by crossing low as you have done!
Try it ... you may be surprised.
P
Think of the racetrack as minor horns.
This is also why you have a very large sweetspot.
If you can, try a quick version with the racetracks vertical. Yes, your c-c is huge but then you can avoid that problem, you already have ... by crossing low as you have done!
Try it ... you may be surprised.
P
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