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In Reply to: RE: Hey Dave, tell him why they exist. posted by wazoo on March 29, 2014 at 08:05:07
For those that are interested, this is a good illustration of the tuning dot scheme for MMG's. (Green speaker 1, yellow speaker 2.)
It's easy to see the two panel resonances of the single dot speaker transducer (green) and the four panel resonances of the three dot transducer (yellow.)
Cheers,
Dave.
Follow Ups:
I don't remember seeing that before. If that doesn't convince us of the judiciousness of the asymmetrical tuning dots, I don't know what can! It's even more critical when one considers that most typical rooms have modal issues in the neighborhood of 70Hz.
I got all kinds of 'em.
Here's one that shows woofer element coupling onto the tweeter. The woofer being actively driven but the tweeter being monitored with an analyzer.
A decent indication of the "mechanical" crossover between electrical elements on the same transducer surface. It's sort of like a psuedo IM distortion measurement.
Dave.
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