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In the Forum: Horn-Loaded Speakers
In the Thread: Midrange driver suggestions
Post Subject: 1201Posted by Scott L on: 1/21/2018
Operating a driver in an open baffle will cause front-to-back sound wave cancellation, aka the acoustical short circuit. In addition to this, a plane board baffle offers zero air load to the drivers cone. This is not good. That's why it sounded like crap.

I actually owned a pair of these 1201's for quite a while. They are excellent drivers, but they are also specialized mid range drivers. They don't sound like 12 inch woofers at all. The reason that I bought the pair that I had, was for a couple of reasons. They were highly recommended to mate with my Stage Accompany SA-8535 ribbon drivers, and I knew a guy locally, who had a pristine pair and willing to sell to me for a very fair price.

Tapping the cone resulted in a neutral sound. Having said that, they are still a 12 inch cone being used for mid range.  I found that the higher I used them in the their recommended frequency range, the more "cone cry" they exhibited. 2500Hz was still a compromise, as it was suggested to me to cross them at 1.2K, but I use an active crossover system, and decided to pursue another avenue all together, rather than to re-configure my unit for the crossover frequency change.

There is also quite a bit of discussion on the merit of this driver as being used as a mid-bass horn driver, but I never did try it.

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