Rerurn to Romy the Cat's Site
In the Forum: Horn-Loaded Speakers
In the Thread: Macondo’s Midbass Project – the grown up time.
Post Subject: Cost/Benefit of Clean Slate Approach?Posted by Paul S on: 6/15/2010
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Romy, I have not gone back to look at all the pictures you've posted, but more annotated roof/ceiling pictures from the outside/inside, and maybe a couple of attic shots, would be helpful. Did you mention if you presently have typically-webbed trusses up there? Regardless, from what I think I remember, it does look like you could remove the section of roof in question and start over with a simple, "engineered" open triangle with a king post that would give you the clear space you'd need to do Jessie's ideas. I would think that this is where you would want to start, with enough empty space to facilitate straight forward construction and subsequent modification of the horn's walls. For the nonce, I am setting aside rather than ignoring the references to the HVAC, etc. that presently inhabit that space.
Building something like this between and around a forest of truss webs while working in cramped spaces would be quite a chore, to say the least. There remains a possibility that the resultant dead load might exceed the present truss design loads, along with the possibility that having the webs in the horns could interfere with the sound propagation.
If to use that space for real horns, it would sure be nice to start with empty space and a structure rated to support an appropriately damped and/or grounded mass. This even opens the possibility to build the horns and do preliminary tests on the ground and then simply swing them up into place.
No doubt, you have already looked into this...
Best regards,
Paul SRerurn to Romy the Cat's Site