Hello Widget
Good point looking to see what's in the "White Paper" if they publish one. Those dual side by side 10" midranges? Curious how that works.
Rob
Hello Widget
Good point looking to see what's in the "White Paper" if they publish one. Those dual side by side 10" midranges? Curious how that works.
Rob
"I could be arguing in my spare time"
The video describes a switch that selects which mid-range driver plays up to the crossover point of the tweeter. The other one presumably plays a narrower frequency band, with lower frequency of the upper filter. Similar to how my SAM3HA center channel speaker works, but switchable. IMO, the second mid-range driver is needed mainly for marketing purposes in both cases.
+1Originally Posted by Don C
It is interesting that for years the story from Northridge was that these high end systems were designed for the Japanese market where a leaner sound was preferred, but here the entire series is obviously tuned to give a much deeper VLF range than any JBL before... the original Everest had the E145 woofer which is awesome but bass shy, the 1500AL series woofers used in more recent times were also awesome drivers but again were quite bass shy (unless goosed with ample DSP). This is quite the departure, but then so is the flashy gold trim and glossy cabinets.
Is it changing with the times, or a change in management? Whatever it is, until JBL proves that they once again care about long term customer support as JBL did 20 years ago and the decades prior, they won't get my endorsement.
Widget
Anyone make Heads or Tails of the crossover frequencies?
270Hz / 550Hz / 850Hz Series MultiCap™ / Acoustically Symmetric 3rd and 4th Order 3.5-way
Talking old school it would be 100/300/1-1.5K.
So are they taking the second woofer up to 270 and crossing the mid at 550 and 850?
Seems like a very narrow bandwidth for the 10?
What do you think?
Rob
"I could be arguing in my spare time"
I assume both 15" woofers go to 270Hz, and both 10" mid bass woofers go to 550Hz, and only one selectable mid bass driver crosses over to the compression drivers at 850 Hz.
Widget
Hello Widget
Ok but where is the .5/ Half way if not in the woofers? The 4435 is a perfect example of a twin 15" as is the Everest these are replacing? Is that 270 really 170 and a typo or?
Just me having a hard time understanding what's going on?
Rob
"I could be arguing in my spare time"
The twin 10" drivers. Both operate 270Hz to 550Hz and then a single (either left or right which is user selectable) 10" runs all the way from 270Hz up to 850Hz... no?
Widget
Hello Widget
Unconventional but possible. Curious how audible was the selection in the Everest 67000 of which woofer went to meet the midrange driver? If you eff it up was it obvious imaging or balance wise?
Rob
"I could be arguing in my spare time"
I didn't experiment with it, but I imagine the difference was fairly subtle... that said, having two drivers playing at 550Hz is bound to be suboptimal.Hello Widget
Unconventional but possible. Curious how audible was the selection in the Everest 67000 of which woofer went to meet the midrange driver? If you eff it up was it obvious imaging or balance wise?
Rob
Widget
That certainly sounded like what they explained in the video as Don mentioned, but it sort of breaks all the rules Harman established about matched dispersion at crossover and good off axis response. The polar plots would look crazy exacerbated by the angled baffles? If Harman doesn't release the Klippel measurements nobody will ever know cause no reviewer will get those beasts on the machine.
It would be .5 if the 10s were allowed to play all the way down and not run through a cap to color their sound..., just like my creation.Hello Widget
Ok but where is the .5/ Half way if not in the woofers? The 4435 is a perfect example of a twin 15" as is the Everest these are replacing? Is that 270 really 170 and a typo or?
Just me having a hard time understanding what's going on?
Rob
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