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He already has that one

The horn you are talking about is the SM-60M. That was the horn I almost pulled the trigger on all those years ago.

It's a coaxial 5" driver in a Constant Directivity horn. It's 3db down at 270hz and goes up to 15khz, but it's only 100db efficient.

So this new horn Tom is talking about trades directivity and increased size for an additional 10db of efficiency. That may not be worth it to you, but two choices are better than one.

I read the phrase 10db efficiency gain, and I think; ooh, a 90% reduction in the power requirement!

It seems that the fundamental difference between waveguides and horns is; directivity vs acoustic gain.

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Big speakers and little amps blew my mind!

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