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In the Forum: Horn-Loaded Speakers
In the Thread: Adding one more non-spherical to Macondo.

Post Subject: Horn suggestions for 300Hz-1000Hz channelPosted by Rewind on: 11/8/2013

It is a shame that I keep finding threads about a 300Hz compression driver channel, that ends abruptly. I have been trying with a not-so-exact Goto S-150 replica (~1.7m deep, 75cm diameter mouth), and I know of another fellow in Sweden who tried the JMLC-200T. Quite different horns, but similar too. We both thought the sound image was too far ahead and the horn sounded sharp. The sound was "too much", in a way.

I ended up cutting the horn to 1.1 meter and fitting a SABA 8" fullrange as a temporary solution. It just does 180Hz-1000Hz okay, but I push it down to 95Hz-600hz with a big hole in lower midrange as a result. The need for a very large lower midrange horn for the band 70-340Hz is evident, but that is another story.

The guy with the JMLC-200T is selling it now, and he reverted back to his multi-cells. Hence my sudden interest of multicells.

I do not agree that it sounds just fine without a compression driver down to 300Hz. Sometimes I want to play around with the detail this channel would add. What I don't want to live with is the weird artifacts from the large round horn I tried before. And I don't believe another large round horn will solve anything, even if the horn was based on long JMLC Excel calculations.

Suggestions? Experiences?

My plan is:
True ribbons: 10khz-30kHz
Compression driver with small avantgarde trio tweeter horn: 4000-10 000Hz
Compression driver: upper mids horn 700-4000Hz
Compression driver: mids horn multicell/JMLC-200T/IWATA??? 340-700Hz
JBL 12" in a 3 meter x 1.2 meter round horn: 70-340Hz
Subwoofer: 25-70Hz

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