Cool 2397 Smith horn set-up

[Mr. Widget]

Why would you expect cancellations with two identical drivers? Assuming -3dB at crossover, wouldn't they just add normally? I really don't know - is there some phase issue?

John

There will be some cancellations and peaking even in the situation you describe... i.e. using the forked throat as intended, but to use it as essentially a two-way, these issues will be exacerbated. At higher frequencies even slight variations in phase will cause the output to add and cancel more noticeably due to their short wave lengths.

Widget

[Mr. Widget]

1-20k sounds like "all the way up" to me since the 2405 only goes to 21.5K Hmmm, maybe I did my homework.

Not all specs are created equally. Due to the laws of physics, no one yet has made a 1" or larger compression driver that has a frequency response to 20KHz +/- 3 dB without external EQ.

Beyond that in all of my own personal experimenting even once you do add the necessary EQ, the quality of that UHF sound is not as good coming from a large compression driver as it is when produced by a dedicated UHF device. I am speaking in terms of ultra critical monitoring/playback... for PA use, hell yeah, turn up the EQ and let her rip.

Widget

[Mr. Widget]

BTW, isn't there a German manufacturer that makes 2-way large format drivers?

BMS 4590 http://www.bmspro.com/downloads/

[Zilch]

Not the "Siren" reference I'm looking for, but see pages 7-8 here:

http://www.jblpro.com/pub/technote/P...20TechNote.pdf

{Wonders if "destructive interference" could be used to cook stuff....}

[lfh]

BMS 4590 http://www.bmspro.com/downloads/

Thanks for the link - I had forgotten the name of the company.