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In the Forum: Horn-Loaded Speakers
In the Thread: A right midbass solution for Altec 515G.
Post Subject: Back chamberPosted by Macman on: 4/12/2012
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Jorge,
With the risk of being called a moron, I actually didn´t do any calculations more than using hornresp to get a decent spl-curve.
The driver properties a got from a guy in Denmark who renovates old altec drivers. The numbers probably weren´t accurate back in -75 and even less so today. That was what I had to work with anyway, not having the proper equipment to measure the drivers myself.
This is what the back chambers look like. The obvious way to reduce the volume is of course to put stuff in there and listen to the results. The lid has 16 screws so there will be some work. Maybe I can come up with a different method though. The easiest way to make the chamber acoustically bigger is probably to add stuffing. After reading about Romys midbass horn I hardly think the volume needs to increase, more likely decrease.
I was thinking of bi amping the whole system so i dont think the different sensitivities will be a serious problem.
Regards
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