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Thread: Greg Timbers & DIY

  1. #16
    Senior Member JuniorJBL's Avatar
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    Lexicon would be Harmon as well
    Always fun learning more.......

  2. #17
    Senior Member briang's Avatar
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    Very nice!

    Many thanks to Giskard for the photo and to Greg Timbers for the graciousness to allow us a photo of his living room.
    Paying debt to Karma...

  3. #18
    Senior Member spkrman57's Avatar
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    Just goes to show...

    Horn systems are not dead!

    Thank God for us horn fans!

    Ron


  4. #19
    Senior Member northwood's Avatar
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    Oh my god


    Fantastic
    looks like array so much.

    He is a JBl master now.
    A government big enough to give you everything you want is big enought to take away everything from you

  5. #20
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    Quote Originally Posted by northwood

    Fantastic
    looks like array so much.

    He is a JBl master now.
    It is actually the inspiration for the Array Series. This is what started it all. This is DIY at its very best. The Array Series wasn't elicited by Marketing or Sales at JBL. The system concept and implementation are by Greg Timbers.

    Oh! By the way - please don't get the impression that he's done.

  6. #21
    Senior Member Don C's Avatar
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    His system and mine actually have one component in common. OK it's just the Dish Network 811.

  7. #22
    Senior Member JBLnsince1959's Avatar
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    A big thank you to Mr. Timbers and Giskard for sharing the photos and info.

    Nice to know GT's interest in 4-ways is still there. So when are the DIY plans going to be listed

  8. #23
    Senior Member northwood's Avatar
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    Quote Originally Posted by Giskard
    It is actually the inspiration for the Array Series. This is what started it all. This is DIY at its very best. The Array Series wasn't elicited by Marketing or Sales at JBL. The system concept and implementation are by Greg Timbers.

    Oh! By the way - please don't get the impression that he's done.
    I'm crazy for his work
    A government big enough to give you everything you want is big enought to take away everything from you

  9. #24
    Senior Member JBLnsince1959's Avatar
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    Quote Originally Posted by Titanium Dome
    Maybe it's time to sell the Performance Series
    NEVER, but they can be improved upon with different boxes and CC crossovers.

    That GT System really looks like something to have...

    Hey Giskard what were the crossover points, did he say?

  10. #25
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    Quote Originally Posted by JBLnsince1959
    Hey Giskard what were the crossover points, did he say?
    There aren't any.






    ~ 80 Hz, ~ 800 Hz, ~ 10 kHz
    I'm not real sure about the 1200FE to 435BE frequency. That crossover is handled by the DX-1 with cards custom made for this specific system. I think the low pass is something like 24 dB/octave and the high pass is 6 dB/octave and very likely charge coupled based on past conversations. Greg had to manipulate the card to get 24 dB/octave on the low pass. My guess would be maybe as low as 650 Hz. It depends on where that particular prototype horn shuts off. Maybe 750 Hz.

  11. #26
    qxlxp
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    i think the aesthetics are better in the GT system than in the commercial version. the "heavier" base better offsets the tall vertical horn.

  12. #27
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    Hi Giskard,

    Thanks very much for your insights & personal impression of this prototype system .

    As much as anything, I'm intrigued by the usage of the 1200Fe .
    As a fan of just about any high power 10" made by JBL, I was somewhat taken aback to see their exculsion in favour of a 12" ( but then you offered up your speculation on the crossover points & it then made sense ).

    Thanks again <.

  13. #28
    Senior Member DavidF's Avatar
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    Quote Originally Posted by Earl K
    Hi Giskard,

    Thanks very much for your insights & personal impression of this prototype system .

    As much as anything, I'm intrigued by the usage of the 1200Fe .
    As a fan of just about any high power 10" made by JBL, I was somewhat taken aback to see their exculsion in favour of a 12" ( but then you offered up your speculation on the crossover points & it then made sense ).

    Thanks again <.
    Could it be, Earl, that the thought is a 12" would be a better FR dispersion match to the horns in the range of cutoff points used in the crossovers? Smoother overall power response. Also, some additional weight and margin for high levels in the low-end power range to match with the not-quite-sub woofer.

    DavidF

  14. #29
    Senior Member JBLnsince1959's Avatar
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    Quote Originally Posted by Giskard

    There aren't any.


    Thanks for the info.. I figured he had it around 10,000 and then somewhere around 700 to 800, it was the lower one that had me wondering...doing it around 80 would really be a nice place for that 12" to work. I'll bet the mid-bass on that puppy is smooth and full. I was wondering if he had it around 80 to 100 or around 250

    I personaly like 12"ers better than the 10"ers in the 250-300 to 700 range ...just more there...

    anyway thanks

    I quess we can only dream.......dream hell..I'm saving my money up. "hey Hon...would it be OK if we didn't travel for 2 years?"

  15. #30
    Senior Member JBLnsince1959's Avatar
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    Quote Originally Posted by qxlxp
    i think the aesthetics are better in the GT system than in the commercial version. the "heavier" base better offsets the tall vertical horn.
    I agree with that..

    What really makes me weak in the knees is that I just like the 4 way with the 12" mid-bass plus it has the beryllium horns........Can you imagine how much that would be retail????

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