Greg Timbers Interview

[Mr. Widget]

Very nice! The redesigned Everest speakers were interesting.
I'd like to know what the ceiling drivers were that he refers to with the dual 5" drivers and "toy horns" (mylar-like but not mylar diaphragms) ...

Here ya go... take a look at the wave guide. It is a mini original Everest/S3100 type wave guide.

https://www.jblsynthesis.com/product...d=loudspeakers


Widget
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[hjames]

Here ya go... take a look at the wave guide. It is a mini original Everest/S3100 type wave guide.

https://www.jblsynthesis.com/product...d=loudspeakers

Widget

Thank you!
Looks like it may be related to the JBL HDI-1600, which is available in a walnut finish
https://www.jbl.com/bookshelf/HDI-1600.html

and also uses that 2410H-2 1" compression driver. (Greg said it had mylar-like but not mylar diaphragms)
At $990 a pop, price is approaching the $1,100 InWall Synthesis SCL-7s ...

[BMWCCA]

Looks like it may be related to the JBL HDI-1600, which is available in a walnut finish
https://www.jbl.com/bookshelf/HDI-1600.html

Wow! Those little suckers are nearly a thousand-dollars each.

[DS-21]

Here ya go... take a look at the wave guide. It is a mini original Everest/S3100 type wave guide.

https://www.jblsynthesis.com/product...d=loudspeakers


Widget
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Are you sure? He said they were from Pro and used the same compression driver as his 5-series.

[Mr. Widget]

Are you sure? He said they were from Pro and used the same compression driver as his 5-series.

Nope, not sure… but I am fairly certain it is the correct model.


Widget

[Ian Mackenzie]

From the spec sheet

High Frequency Driver
1" (25 mm) 2410H-2 Teonex annular ring-diaphragm compression driver- mini compression driver

Not Mylar but used for the same reasons

[DS-21]

Nope, not sure… but I am fairly certain it is the correct model.


Widget

I'm pretty sure that's not the model.

Going back to the video the speakers are under square grilles, not rectangular grilles. See at 4:58 in Erin's video.



Maybe they're SCL-3's, and he's simply mistaken about the horn pattern.

[srm51555]

Thanks Champster for posting this and thanks Ian for posting it in the other thread as well. I thought it was super cool he took the time to meet and answer all of those questions off the cuff. It seems like he is a humble person even though he has designed all of these great systems.

1. The "shopping mall live piano" demonstration of the importance of dynamics.
2. How power compression in testing will affect measurements.
3. His mention of the difference of opinion between the "Sean and Floyd guys" and his personal take on the importance of dynamics versus directivity.

Also agree. His take on dynamics versus directivity makes total sense. I also didn't know constant directivity and how lively a room sounds played together. I assumed the opposite was true.

One of the neat parts about LHF is that you can lurk undetected, but still see all of the content. I did this for years while in college until finally signing up, so if you happen to take a look at this thread Greg, thanks for taking the time to do the interview and many other years of answering questions through other members. Glad to see you still have the passion of building and I hope all is well.

Thanks,
Scott

[Ian Mackenzie]

I have a follow up on Greg’s system below for you guys. Greg now spends most of his time on his house boat enjoying his retirement. So snippets about his system are few and far between.

Hi Ian,

“For your amusement, I have attached pictures of my system below. I have 2 15”s and a 4” compression driver per channel. My Sub is a DCD 18” mounted in my fireplace (blocked off). Everything is sealed, neither 15 is rolled off on the low end. The 18, and both 15’s all extent from the room cutoff at 13 Hz up to their respective roll of points of 80 Hz, 150 Hz and 750 Hz. The system uses linear phase crossovers and has no group delay. The Impulse response shows the alignment. The only reason there is a lift before the main spike is that the Sub has a much wider impulse: and that is what you see preceding the main spike.”

The thing is Greg’s system is a constant work in progress. On each occasion l’ve heard it the system has become progressively more complex.

I don’t know the reason for the new enclosures or details of the horn. It was made in Greg’s impressive workshop using a 3D printer. Last l heard Greg was Beta Testing the latest DEQX software which Greg said was a big improvement. No idea where DEQX is with that.

If l can glean any more on Greg’s system l will.

Ian

PS. I would be surprised if there isn’t a neat active solution for the 4367. I have asked the question.

[grumpy]

Thanks Ian,

Always nice to see what's cooking in the kitchen