GoodSoundClub - Romy the Cat's Audio Site

In the Forum: Horn-Loaded Speakers
In the Thread: Replacing 802 G and 811 horns

Post Subject: Extended highs......Posted by rowuk on: 3/8/2016

I think that most of us here consider horns to be decade devices. That means about 3.5 octaves can be optimally covered. 800-8000Hz in your case. Extending the "highs" another octave means a couple of things. If a horn is "too short" you do not get much EQ or benefit for the lower octaves. If it is too long, it acts like a transmissionline, the response gets ragged (also to the ear). That means a horn that does a good job at 1K could (and most likely would) be pretty challenged at 10K. I know that there will be a bunch of Constant Directivity users that will scream that this is not true. If that is what they want to believe, then fine. Coax solutions are maybe great for PA, but the long horn for the mids will screw up the top octave for sure.

If Sound quality is your goal, you need to figure out if the Altec 802 on your tractrix horn has serious Sound from 800Hz to whatever. If yes, then an additional channel above 8-10KHz (not necessarily a horn) could be a solution.
I have experience with the BMS coax. I bought them, broke them in, and they were in my system for 2 days. I sent them back. Coax does not work in my opinion. You can get nice pressure response, but that is not my goal.

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