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  1. Replies
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    Well that didn't work out! Some of my best...

    Well that didn't work out! Some of my best sounding drivers use paper cones. Go figure?

    Rob:)
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    This is what I would be building mirror imaged...

    This is what I would be building mirror imaged though L240ti Silly starting with a clean slate to not just go for it.

    ...
  3. Thread: Paragon Bass

    by Robh3606
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    524

    Hello Roger Beautiful system! I have no...

    Hello Roger

    Beautiful system!

    I have no first hand experience with a Paragon however I have with Altec 604's. I also run E-145's in my mains which are a direct descendant of your 150's.

    If...
  4. I never knew this happened! Rob:(

    I never knew this happened!

    Rob:(
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    No one mentioned the L240?? ...

    No one mentioned the L240??

    https://manuals.harman.com/JBL/HOM/Technical%20Sheet/240Ti%20ts.pdf

    Rob:)
  6. Thread: JBL 308p Mk2

    by Robh3606
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    8
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    423

    "Iím considering the 708p speakers for my next...

    "Iím considering the 708p speakers for my next small HT."

    Now that could make a nice set-up! So have you heard them?

    Rob:)
  7. Thread: JBL 308p Mk2

    by Robh3606
    Replies
    8
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    423

    Well I must say I am impressed! They are newly up...

    Well I must say I am impressed! They are newly up and still integrating the subwoofer but the imaging and detail are really nice. Very consistent with distance. Have the HF trim at -2 as I am in...
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    You might want to ask Bill if he could send you a...

    You might want to ask Bill if he could send you a couple of the shipping boxes he uses to get your woofers there safely. You never know he would probably be more than happy to give you a hand getting...
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    OK makes sense now! Rob:)

    OK makes sense now!

    Rob:)
  10. Replies
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    I have to ask you have a good pair or Aluminum...

    I have to ask you have a good pair or Aluminum 2440 diaphragms so why are you changing out to 2441's? You have 2405's up top no? The biggest difference between the 2440 vs 2441 is the increased HF...
  11. Sure the 4311/4312 have the woofers running...

    Sure the 4311/4312 have the woofers running fullrange. You could do the battery test. The caps will protect the midrange and the tweeter from DC. They should have standard polarity when wired...
  12. Yes and I suggest you look at it again because...

    Yes and I suggest you look at it again because you got it wrong

    Rob:)
  13. Replies
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    No idea they are on sale for $100 off retail! So...

    No idea they are on sale for $100 off retail! So I bit the bullet. They added a boundary control upgraded the drivers an I guess dropped the price!!??

    Rob:)
  14. What you posted above is not from JBL uses a...

    What you posted above is not from JBL uses a different crossover and is a negative system.

    From the PDF

    Control Monitors; all models are positive: 4312A L/R

    Now look at both techsheets the...
  15. No it's green to the black terminal on the...

    No it's green to the black terminal on the outside speaker terminals and green to the +++ Plus on the woofer. + on the woofer is red.

    Rob:)
  16. No no no! This is exactly why there is so much...

    No no no! This is exactly why there is so much confusion. Forget about driver polarity. We all tend to out smart ourselves. We are talking specially about the wiring diagram that clearly shows the...
  17. RED is always the + terminal on a JBL transducer....

    RED is always the + terminal on a JBL transducer.

    Robh:)
  18. Thread: JBL 308p Mk2

    by Robh3606
    Replies
    8
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    423

    http://www.jblpro.com/pub/obsolete/6210_6211.pdf...

    http://www.jblpro.com/pub/obsolete/6210_6211.pdf

    6211


    Rob:)
  19. Look Here ...

    Look Here

    https://manuals.harman.com/JBL/HOM/Technical%20Sheet/4311B%20ts.pdf

    Rob:)
  20. Thread: JBL 308p Mk2

    by Robh3606
    Replies
    8
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    423

    No LOL its from the Sci-Fi series The Expanse ...

    No LOL its from the Sci-Fi series The Expanse

    Rob:)
  21. Thread: JBL 308p Mk2

    by Robh3606
    Replies
    8
    Views
    423

    JBL 308p Mk2

    Just grabbed a pair to replace my 4208's and Urei 6211 amps in my office at work. Couldn't resist a pair for $298. Can't wait to see how they sound! Anyone have a pair?


    Rob:)
  22. Replies
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    I would run an impedance sweep on them no network...

    I would run an impedance sweep on them no network and also do a low power sine sweep to listen for any issues. Thy should match up pretty close. Just put a big cap in series to protect against DC. I...
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    They sure look right. They are a dull dark grey,...

    They sure look right. They are a dull dark grey, not trusting the picture? The aluminum ones 2431 are a bright silver color. Worth? Check eBay

    Rob:)
  24. Thread: 250ti Top End

    by Robh3606
    Replies
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    3,225

    You should really use a proper measurement system...

    You should really use a proper measurement system if you can to look for suck outs to verify if the drivers are connected improperly. You might be able to tell if you used a tone/band limited noise...
  25. Thread: 250ti Top End

    by Robh3606
    Replies
    34
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    3,225

    You should verify with measurement. But be...

    You should verify with measurement. But be careful with the polarity as in the tech sheets. If you look closely at the TBQ it is actual driver acoustic polarity. Looking at the sheet it looks like...
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