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  1. Hi, Not knowing how your signal chain looks...

    Hi,

    Not knowing how your signal chain looks like it is in general a bad idea to introduce "resistors" in the signal chain unless the source is very low impedance and the "reciver" is high...
  2. Thread: Jbl k2 s9500

    by sebackman
    Replies
    4
    Views
    497

    Hi Juergen, It is not advised to change to...

    Hi Juergen,

    It is not advised to change to Beryllium diaphragms in those speakers having a 2Ē 475Nd driver and especially not in a 2-way construction.

    The Beryllium diaphragms will fall off...
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    323

    The days of big woofers is counted... 84138

    The days of big woofers is counted...
    84138
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    323

    Magic of rubber :-)

    This is an interesting observation. I think we all were of the opinion that "HPL" was really a "H" without the rubber magnet protection. In reality the JBL rubber protector does have magical magnetic...
  5. Replies
    103
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    10,632

    Not sure those are original dias.... Looks like...

    Not sure those are original dias.... Looks like someone swapped in something else.

    I have never seen a JBL dia looking like that with leads trough the dome.

    Kind regards
    //Rob
  6. Replies
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    10,632

    That looks really odd. Normally the phase plug...

    That looks really odd.

    Normally the phase plug never rust from what I have seen. It is the steel outer ring that corrodes and that is not uncommon due to leaking back cover or water coming in from...
  7. Greetings, The STX #5006815 is a completely...

    Greetings,

    The STX #5006815 is a completely different animal than the 2332. Not comparable at all. 25 years apart. I like 2332 and have had a bunch of them but nowhere near the STX. Same WG as...
  8. Replies
    635
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    182,061

    Hi POS, Email sent with all data. Share as you...

    Hi POS,

    Email sent with all data. Share as you see fit.

    Kind regards
    //Rob
  9. Replies
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    1,315

    They donít. They did not use the 2234. They did...

    They donít. They did not use the 2234. They did not make them 2.5 way either, both 15 goes all the way. Well, or they donít....
  10. Replies
    1
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    515

    They normally have dual pattern.

    They normally have dual pattern.
  11. Replies
    9
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    1,315

    I have heard them compared to 4367. Not even the...

    I have heard them compared to 4367. Not even the same planet.
  12. Replies
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    2,027

    Here are some pictures. 2453 is a straight fit on...

    Here are some pictures. 2453 is a straight fit on the VTX F12 waveguide.

    Any other JBL driver can be mounted with an adapter. I have posted about this in an earlier thread, including a drawing.
    ...
  13. Replies
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    2,027

    Can check fit tomorrow. Trevlig kvšll

    Can check fit tomorrow.

    Trevlig kvšll
  14. With a little eq it is usable down to 1kHz with...

    With a little eq it is usable down to 1kHz with excellent results. XO 24LR
  15. Replies
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    5,197

    Hi Herve Sorry for that. Didn't know it was...

    Hi Herve

    Sorry for that. Didn't know it was full.

    Now cleaned. :thmbsup: .

    //Rob
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    5,197

    Hi Rodec, Sorry for a lengthy post. This...

    Hi Rodec,

    Sorry for a lengthy post.

    This will lack some spaces between words and I donít know why that is but is a result of being cut and past from Word.

    Itís really that simple. If you...
  17. Replies
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    Hi dubkarma, I have no idea who tested the...

    Hi dubkarma,

    I have no idea who tested the 2430k drivers for you but they are either both faulty or the measurement is wrong. I have done many measurement of many drivers on that horn and there is...
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    3,962

    Hi, You should be fine with a 4" (2447,...

    Hi,

    You should be fine with a 4" (2447, 2450SL, 2451, 2452 or 2453) 1,5" driver with SL diaphragms. No real need for UHF with those diaphragms just some tweaking in the DSP. The 243* drivers do...
  19. Replies
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    5,197

    Hi, You should be fine with a 4" (2447,...

    Hi,

    You should be fine with a 4" (2447, 2450SL, 2451, 2452 or 2453) 1,5" driver with SL diaphragms. No real need for UHF with those diaphragms just some tweaking in the DSP. The 243* drivers do...
  20. Thread: Sac rmx 2450

    by sebackman
    Replies
    2
    Views
    2,401

    Hi Dino, I would say that you CA9 is faulty. I...

    Hi Dino,

    I would say that you CA9 is faulty. I have had both and I hold CA9 as the better amp. It is more powerfull, has better damp factor and lower noise spec.

    If fan noise is a problem you...
  21. Replies
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    182,061

    Hi, Sorry, meant the older 2447 & 2450SL &...

    Hi,

    Sorry, meant the older 2447 & 2450SL & 2451.

    Post corrected

    Kind regards
    //Rob
  22. Replies
    635
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    182,061

    Hi Mitcho, That was encouraging. I have never...

    Hi Mitcho,

    That was encouraging. I have never really found a way to “cure” the dip on the243X drivers. I will try to make an adapter next week and try. I have a pair of 2453 in the shop.

    The...
  23. Replies
    635
    Views
    182,061

    Hi, Yes, the 2453 is nowhere near as deep as...

    Hi,

    Yes, the 2453 is nowhere near as deep as the 2451/2450SL so the phase plug would have to be simplified.

    I have not been able to get the smooth 2447/2451/2450SL/476 curve with 2452, 2453 or...
  24. Replies
    635
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    182,061

    Dear all, POS, totally agree, I did not use...

    Dear all,

    POS, totally agree, I did not use the stock network and hence the impedance would be different in the original M2 system.

    -And the 2451 cores are way easier to mount. The D2’s and the...
  25. Replies
    635
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    182,061

    Hi POS, Please bear in mind that the SL's were...

    Hi POS,

    Please bear in mind that the SL's were new but I don't know the history of the D2's.

    Measurement was done with 68cm flight distance, a bit on the short side but my room is too small....
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