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  1. Replies
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    Good, it's not a Pascalite diaphragm. I did...

    Good, it's not a Pascalite diaphragm.
    I did this, not complicated.

    90542


    https://.casimages.com/img/2022/05/19/Erreur 1
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    90480 My tech did a similar job (N501a)...

    90480

    My tech did a similar job (N501a) recently and he used 2 Lpad 100w ceramic (135$ca) and 4 Solen audio grade fast cap capacitors (285$ca)
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    If you remove the plastic cap you should put felt...

    If you remove the plastic cap you should put felt at the bottom of the lid, I have already replaced that with an 808 to make it an 802 by changing the diaphragm but difficult to say if it is the felt...
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    Good morning Richard, Calculating the volume...

    Good morning Richard,

    Calculating the volume by hand was the last solution considered but I can do it, thanks for the offer but it won't be necessary.
    In fact all this stems from my test with...
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    Thank you, it's a work in progress and I'm very...

    Thank you, it's a work in progress and I'm very happy with it so far



    The 421 refers to info on the Stanley Screamers 1120



    I did not have those of 1984 only those of 1986, thank you
  6. Replies
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    Thank you, I'm not surprised because I searched...

    Thank you, I'm not surprised because I searched quite a bit. I have 817a's that I currently use with 416-16A's and I have those blueprints as well. Information on the 817a or SS-1120 instead...
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    Thanks in advance for research.

    Thanks in advance for research.
  8. Replies
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    Altec 817A interior volume? (SS-1120)

    Hello, I have a question and I can't find the answer....
    Anyone know the interior volume of an Altec 817A or Stanley Screamers SS-1120???
    Thx
  9. Replies
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    Hi, OK thanks for these notes. I understand...

    Hi,

    OK thanks for these notes. I understand my misinterpretation of the 4355 specs now. I had, several years ago, these 2440, 24441 drivers all in 16 ohms, the 2441 was my favorite for a long...
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    Hi Barry, Tell me did I miss something? If I...

    Hi Barry,

    Tell me did I miss something? If I go to the specs for the 4355, the drivers are 8 ohms, no?
  11. Replies
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    A passive crossover is made for specific drivers...

    A passive crossover is made for specific drivers and in addition the impedance does not match, the result will not be optimal. IMHO I would keep the 2450SL which is a great driver and look for a good...
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    Hi, Surely, this is what I did with my 2450, I...

    Hi, Surely, this is what I did with my 2450, I installed the 2451 dia because I much prefer the aquapla's diaphragm.
    JBL2450, 2450SL or 2451 have the same motor.
  13. Good idea, I have Decibel X and Spectrum (all...

    Good idea, I have Decibel X and Spectrum (all free) in my iPhone, you may know better ones but they will always be less precise than a calibrated microphone.
  14. Hi, Difficult doesn't mean impossible, you want...

    Hi,
    Difficult doesn't mean impossible, you want to buy a micro USB with Rew so go ahead, it's not really expensive. In my case this way helped me a lot with the possibilities offered by a DSP for...
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    About surround material, you also have this...

    About surround material, you also have this information in that document, check the image of 1500AL
    And I need sometimes https://translate.google.com/ me too :)
  16. Replies
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    Hello, Answers here:...

    Hello,
    Answers here:
    http://www.audioheritage.org/html/projectmay/technology/1500al.htm
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    Small correction: ALAC is rather Apple Lossless...

    Small correction: ALAC is rather Apple Lossless Audio Codec, therefore without compression. It is AAC which is Advanced Audio Coding with compression.

    With regards :)
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    Hi, I have had several Orbans 674A and never had...

    Hi,
    I have had several Orbans 674A and never had any problems and they are good devices but if you have a little more budget invest in a more modern DSP this is what I did several years ago and I...
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    :) But a question remains, what are these...

    :)
    But a question remains, what are these cylindrical baffle for the 2397?

    Do you refer with this old thread: http://www.audioheritage.org/vbulletin/showthread.php?5042-2397-baffle
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    Hello, Me too after several tests with...

    Hello,
    Me too after several tests with different horns I kept the 2397 then I tried several super-tweeter and I like the result with AMT-1, last year I tinkered with panels following a reading...
  21. Hi, I sold these 846 but I keeped the woofers for...

    Hi, I sold these 846 but I keeped the woofers for my A5 and they are on the older 15 inch frame, I got many 416 16 ohms all on older frame 15" in hammer-tone green, matte finish green and matte...
  22. Hello, with all due respect just a small...

    Hello, with all due respect just a small correction, I had several 846s and I had a pair with black drivers and they were in 16ohms, the color is more related to the year of production.

    Here a...
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    Hello, I currently have 2450/2397s with "SL"...

    Hello, I currently have 2450/2397s with "SL" aquaplas diaphragms from 2451 drivers that I bought to have their diaphragms that I couldn't find either, I interchanged the diaphragms and I I sold the...
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    Find this post useful

    I did it today.
    I did not take measures before or after, just listen it and all sound good.


    See what I did:

    First as you see the foam is in poor shape, dry and fall in little parts when I...
  25. Hi, I also come to the same conclusion as you,...

    Hi,
    I also come to the same conclusion as you, the distorted sound that I have also observed several times comes from Keith's Hammond in my opinion and not from your system because I too can hear it...
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