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In Reply to: Lowther voice coil dimensions posted by Datubie on February 1, 2007 at 19:36:35:
Thanks for the help.I was thinking of turning my PM4 magnets into colossal domed tweeters by sticking a compression driver diaphragm on! haha.
Follow Ups:
I can't remember where, but I read somewhere about someone who cut the main cone away from the cone assembly of a Lowther driver and modified the whole thing to work as a tweeter. They reported being pleased with the results. You could do something like that, I'm sure. There are those who would argue that what I just described would be better than any dome tweeter you could make using the same driver. (Some people are dead-set against dome tweeters.)
The only cones I have right now are good ones and I'm not about to butcher those.Actually, my first idea was to turn the thing into a compresson driver!
I know someone who used a Lowther as a compression driver for a bass horn that he built out of concrete in his basement. The cone had to be reinforced to prevent it from collapsing. He got down to 16Hz with it. It was good but too long and he was bothered by the time delay. In the end he shortened the horn (NOT a fun activity with a concrete horn!) and replaced the Lowther with a 15-inch Altec woofer, which (surprise!) gave better results in every way.
I'm certainly not going to be that crazy!! With a 1.5" voice coil, I think a mid range application would be best. Maybe I could invert a small format Altec diaphragm, glue it to a Lowther voice coil and also use the phase plug .... Hmmm.... Machining a housing to take the lot shouldn't be to hard. Hmmmm....
I'm certainly not going to be that crazy!! With a 1.5" voice coil, I think a mid range application would be best. Maybe I could invert a small format Altec diaphragm, glue it to a Lowther voice coil and also use the phase plug .... Hmmm.... Machining a housing to take the lot shouldn't be to hard. Hmmmm....
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