2453 & 2384 STRANGE Respone
Quote:
Originally Posted by
Mitchco
Cool, I really like this waveguide. For fun, here are the frequency and phase response and distortion measurements. This was with the mic 1 meter away on axis, in-room, no XO, 83 dB SPL ref and sweep from 600Hz on up:
Attachment 79890Attachment 79891
Personally, I don't think any UHF driver is needed, and depending on one's age, such as myself, likely never to hear it :-) The distortion is quite low, even at 600 Hz. I certainly could mate the driver better to the waveguide as evidenced by the notch at 12.7 kHz. However, I use DSP eq for constant directivity waveguide eq and it smooths it out nicely, with response to -3 dB at 19 kHz relative to a house curve target response. User notnyt got similar measurements to mine:
http://www.avsforum.com/forum/89-spe...l#post42209001
Here is notnyt's measures of the 2452h-BeX4008 combo on the 2384:
http://www.avsforum.com/forum/89-spe...l#post41972249
And JBL 2435HPL:
http://www.avsforum.com/forum/89-spe...l#post42272969
Hi Mitchco
I think the response round 10kHz is not good. May be some kind of strong reflection has happened.
Did You try the same driver with different horn?
I have seen such behaviors with 2441 drivers and some horns too, but with much narrower notch at 10kHz.
regards
ivica