But it's not a "ring radiator".Originally Posted by Oldmics
Widget
But it's not a "ring radiator".Originally Posted by Oldmics
Widget
Somewhere I have a design for a notch filter to improve the 2405, that peak below 8000 looks enormous.
Ian
As I recall the 703 on axis has a very broad peaked resonse around 15kHz, something to the tune of 10 dB, that must be addressed. Maybe Widget can enlighten us with off axis scans.
Cyclotronguy
Yeah, the TAD does have a rather un-textbook like on-axis curve. The pair of ET-703s I currently have are stuck in these cabinets and I can't stop listening to them long enough to pull the tweeters out and do some measurements of them. I have ordered veneer samples and will eventually need to pull out the drivers and finish the speakers. I'll post the curves then.
Widget
TAD Et703......Being a diffraction type horn I would like to see off axis poler plots of this tweeter.
Hi Widget,
there is a fifth ring radiator: The 2407H / 2407J which JBL is using from 1200 Hz. Any chance of some measurements for this new ring radiator?
Nice work Widget!
What driver and horn are You using for lows and mids?
Thank You for the measurments!
BR: Jakob
I don't know anything about the 2407, but after doing a quick search on the JBL Pro site, it appears to be a 1.5" light weight compression driver with unique diaphragm. I would assume it is more closely related to the drivers we tested here:Originally Posted by Jan Daugaard
http://audioheritage.org/vbulletin/s...ead.php?t=6050
It does not appear to be a ring radiator.
Widget
The woofer is a JBL 1500AL and the mid driver is TAD TD4003 on a TAD TH4003 horn clone.Originally Posted by Jakob
Widget
How do you like your 1500AL woofers? Can you compare their performance to other JBL woofers like the 2235H or the 1401Nd? What size enclosure are you using? Thanks!
Wow, thats a kick in the butt. So much for adding these 2403's to my Westlakes. I will leave them stock 2405's.
Thanks Widget
Ken
I would still try them....trust your ears..then read the graphs....not visa versa.
The Doctor
I wouldn't be surprised if Mr. Widget used 'em hisself....
[The look alone is compelling....]
I had a feeling the cat eyes would not be much different to the 2405. I mean if it was that much better than the 2405 you would think JBL would not drop it from production. Most likely westlake wanted a ultra hf unit on their top of the line system and figured the cat eye would look a bit more unique than the common 2405???
The lower mass and hence vastly superior transient capabilty is the issue.
You can EQ the crap out of any driver/ horn and it will look flat to the naked eye but that's not how it sounds.
The Doctor
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