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  1. Thread: Diaphragm

    by frank23
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    6
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    2,448

    As the 2440 and 2441 diaphragm are both...

    As the 2440 and 2441 diaphragm are both constructed with the dome and the suspension from the same aluminium, the suspension part will eventually harden over time. Titanium does not suffer from this....
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    130,174

    Yeah, I go to a 2123 10" mid at 150Hz that goes...

    Yeah, I go to a 2123 10" mid at 150Hz that goes to the 2344 at 1600Hz and is used to 16kHz compensated. Sounds wonderful.

    On topic:
    Every now and then I check the site that has a pair of new 4365...
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    346
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    130,174

    @JPW Do you have a constant directivity...

    @JPW Do you have a constant directivity compensation in the Marchand crossover? Reason I am asking is that I have considered Marchand a few times instead of my modded M553, but I don't think it has...
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    2,488

    Actually this configuration has to do with the...

    Actually this configuration has to do with the system and driver efficiency as well as radiation patterns. The 2234 from the 4435 is the same as the 2235 without the mass ring. Therefore the...
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    For shock and awe I would put in the 2445...

    For shock and awe I would put in the 2445 diaphragms as titanium can take more than aluminium. For good sound I would put in 2441 diaphragms as aluminium sounds better.

    If the DC offset on your...
  6. You can also improve the crossover for home use...

    You can also improve the crossover for home use and go the Nelson Pass (famous audio guy) way:
    http://www.audioheritage.org/vbulletin/showthread.php?32305-JBL-L300-Modification-by-Nelson-Pass
  7. Replies
    346
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    130,174

    Congratulations on the 4367 speakers. Is this...

    Congratulations on the 4367 speakers. Is this real wood veneer, or wood print? As far as the previous comments go, one was talking about the 4365 which is of course another speaker. The other thing...
  8. I see a new pair of 4365 for sale in neighbouring...

    I see a new pair of 4365 for sale in neighbouring Germany for 13.600 euro... Those look nice and big!

    And how loud is loud? I think most people's systems will definately not play as loud as I...
  9. Hmm, the M2. I'm not sure. I don't like the DSP...

    Hmm, the M2. I'm not sure. I don't like the DSP etc. It took me a while to find the right DAC for me, non-oversampling, and I don't believe in doing all sorts of calculations on the sound. And amps...
  10. Choosing between Array 1400, K2 S9800 or True-extent Beryllium...

    Lately I have been thinking a little about choices I can make for my 'big' system. I am very satisfied with the sound of what I have now: E145 (closed cabinet) +2123+2420/2344/radian-alu-dia's all...
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    Sticky: I only read this now, I'm sorry for Greg Timbers...

    I only read this now, I'm sorry for Greg Timbers to be treated this way. It's incredible to see how American companies mistreat their employees, their biggest assets. I'm glad to be living in Europe....
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    I was actually looking for the rising distortion...

    I was actually looking for the rising distortion with a rising level. The distortion figures for the E145 are at 10W, and I wondered about the figures for 1W. But looking at this graph, I think one...
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    And if the noted voltage is correct, it should...

    And if the noted voltage is correct, it should probably say "10W@1m", not "1 W@1m" as it says now. It looks like the "0" was removed. I have no idea how distortion scales with level though.
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    I have seen the E145 frequency response curve as...

    I have seen the E145 frequency response curve as measured by Greg Timbers many times, but have never seen the version I found here, with the 2nd and 3rd harmonics added in the graph (note: raised by...
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    3,477

    It had to do with changing port tuning and...

    It had to do with changing port tuning and cabinet tuning by lowering the Qts by inserting a resistor. Because I had everything apart because of experimenting with the 1200fe, I have tried a number...
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    65,584

    It may sound strange regarding the T/S data, but...

    It may sound strange regarding the T/S data, but I am now using the E145 in a closed 4507 cabinet. I moved it forward 30cm, and the bass sounds very fast. I probably miss the lowest octave, but the...
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    I found the E145/2123/2420+2344 combination more...

    I found the E145/2123/2420+2344 combination more to my liking than combining the 1200fe/2420+2344 at about 800-1000Hz. And since I decided to remain 3-way, why not go with the full 15" and keep the...
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    I finally tried this today, after having tinkered...

    I finally tried this today, after having tinkered with it on and off over the past few weeks.

    With a measurement microphone and pink noise I measured 40Hz in comparison to 100Hz. With a 4.4Ohm...
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    I have just put my DIY system with the...

    I have just put my DIY system with the 1200FE/2344+2420 together yesterday and was just thinking that this piano recording I'm playing now sounded more lifelike than I have been used to. I went to a...
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    3,477

    I received the 1200fe yesterday. They look...

    I received the 1200fe yesterday. They look fantastic. But they're brand new, so need running in. I have a pair of cherry veneered cabinets from a previous project that I can use for a first try. I'll...
  21. Aha, the 2311? I have got a pair of those,...

    Aha, the 2311? I have got a pair of those, including perfect slants in my pair of Olympus S8R on 375's. Hmm, maybe I should try them out once, they have been in storage since I bought them...
  22. What horns will you be using for the 2441 or 2450?

    What horns will you be using for the 2441 or 2450?
  23. Replies
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    I time aligned my 2123 / 2420+2344. I measured it...

    I time aligned my 2123 / 2420+2344. I measured it using pulses. It took about 11cm that the 2344 needed to be put forward in comparison to the 2123 baffe to get the time alignment right. In the end,...
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    Rock on indeed! :-) But JBL did not sell "a...

    Rock on indeed! :-)

    But JBL did not sell "a million studio monitors just like this" :-) The JBL 4628 with this configuration was meant as sound reinforcement for a band or so. Not for monitoring...
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    In your case, I would close them up, and leave...

    In your case, I would close them up, and leave everything as is. You cannot get to the mesh by just removing the diaphragm. For that you need to demagnetize the driver, something that only...
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