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  1. Replies
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    3,859

    Hi,Always a matter of taste. I tried the 2360...

    Hi,Always a matter of taste. I tried the 2360 they are majestic but you have to be far away to appreciate them unless you like having the musicians more in your face.My experiments led me to 2397 for...
  2. Replies
    45
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    10,130

    My friends who have listened to these AMTs at...

    My friends who have listened to these AMTs at home have bought them in turn. Even if they can be used up to 800Hz this is not where they are at their best, I have the same opinion as Todalin on this...
  3. Photoshop can fix that easily if the photo is of...

    Photoshop can fix that easily if the photo is of reasonable quality, if you need i can do that..
  4. Replies
    56
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    11,940

    Hello, I tried to integrate the Heils which I...

    Hello,
    I tried to integrate the Heils which I had taken on my ESS AMT-1A Monitor during the reconstruction of their crossovers, tests with a system using 2450/2397, Altecs 817a, I really like the...
  5. Replies
    37
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    9,741

    Yes! I took a quick look at the document and it...

    Yes! I took a quick look at the document and it made me think of the principles of AirMotionTranducer (AMT) but for very low frequencies.
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    9,741

    I am speechless. How do they get that. I built...

    I am speechless.
    How do they get that. I built subs last month and they easily weigh over 150 pounds each.

    Really interesting:hmm:
  7. Replies
    20
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    6,104

    In the past I've tinkered with my Hiraga inspired...

    In the past I've tinkered with my Hiraga inspired A7's and 5's but haven't used a passive crossover for these.
    Last with an active DSP XTA crossover I always cut higher than 500 depending on the...
  8. Replies
    20
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    6,104

    Tell that to my wife ;-) Yes, I have had a...

    Tell that to my wife ;-)
    Yes, I have had a multitude of horns over the years but these remain my favorite with the 2450 equipped with aquapla slides, please note that this only involves me in a...
  9. Replies
    20
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    6,104

    Hi, I recovered the 817 which came from a Club...

    Hi,
    I recovered the 817 which came from a Club in my region, they were equipped with PHL drivers and it is very heavy, I had to restore them but I like the result. For my use the 416s are better...
  10. Replies
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    6,104

    Hi, Mine have 200 mm (+/- 2mm) for the mouth and...

    Hi,
    Mine have 200 mm (+/- 2mm) for the mouth and for the vents 70x350mm x 4.
    They have 416-16As. I believe that the 416A were no longer in production when the 817/816 boxes were introduced, hence...
  11. Replies
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    1,494

    It depends on the horn that is on it. Sorry I do...

    It depends on the horn that is on it.
    Sorry I do not understand the question...
  12. Replies
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    3,442

    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
  13. Replies
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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)
  14. Replies
    8
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    3,442

    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...
  15. Replies
    8
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    3,734

    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...
  16. Replies
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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
  17. 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...
  18. Replies
    8
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    Thanks in advance for research.

    Thanks in advance for research.
  19. Replies
    8
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    3,734

    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
  20. Replies
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    29,639

    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...
  21. Replies
    76
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    29,639

    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?
  22. Replies
    76
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    29,639

    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...
  23. Replies
    76
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    29,639

    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.
  24. 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.
  25. 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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