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  1. Excellent. :thumbsup: Because just clicking...

    Excellent.
    :thumbsup:
    Because just clicking "Like" didn't seem sufficient.
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    It's also worth noting that, when you grind away...

    It's also worth noting that, when you grind away PCB material, you are generating fine dust composed of epoxy and glass particles so use appropriate protection. For a small job I wear a dust mask and...
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    If you grind away all of the carbonized PCB...

    If you grind away all of the carbonized PCB material then there is no need to apply any sealant. It also does not even matter if you end up with a hole in the PC board.
  4. Thanks Chuck. When time allows I'll respond in...

    Thanks Chuck. When time allows I'll respond in the members only lobby & let you know what's going on with me.



    Juan,
    Did you receive my PMs about the pot? I sent you two PMs. If you ...
  5. Juan, Have part / Can help. Please wait for my...

    Juan,
    Have part / Can help.
    Please wait for my PM.
    Tom
    54723
    PS: Very strange twist of fate that I tripped across this thread during a google part search for another project.
  6. In my case, the problem started with a specific...

    In my case, the problem started with a specific high SPL occurrence to one ear 50 years ago. It evolved (sensitive to different frequencies) and got progressively worse over the years.
  7. Thanks for the info Dude. I'll give them a call....

    Thanks for the info Dude. I'll give them a call.
    I don't understand the technical design approach to providing a linear attenuation across the audio band. It would be interesting to know the physics...
  8. The input from everyone is much appreciated and...

    The input from everyone is much appreciated and it is encouraging that there is a path to solution.
    Dude - I'm confused that you talk about custom molding but the link you provided just offers four...
  9. I'd like to know more about that. I didn't...

    I'd like to know more about that. I didn't realize that custom fitting would make a significant difference regarding the frequency response.
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    I'd also add Digital Processing amps to the "Not...

    I'd also add Digital Processing amps to the "Not Immediate" list. Agreed?
  11. High Fidelity / Musicons / Concert Ear Plugs - Revies & Opinions

    My quest is to acquire a set of ear plugs that approximate equal attenuation across the audio frequency band. The goal is to reduce SPL while avoiding the dull sound quality that results when...
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    I hope it doesn't come to that. It would be a...

    I hope it doesn't come to that. It would be a real shame if posters keep using 3rd party image sites.When the image sites disappear or the user cancels their account then the images in the thread are...
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    My test.50691 Works for me too. The file size...

    My test.50691
    Works for me too.
    The file size is 135kB.
    My PC also uses XpSp3 and Firefox 52.9.0 (32-bit) the same as vintagekiki reported.
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    I am also running firefox 52.9 ESR. But on Win XP...

    I am also running firefox 52.9 ESR. But on Win XP SP3. (The Win XP will not be in use here much longer) I have my security set fairly high. It doesn't save passwords and doesn't open new windows...
  15. If all the facts are correct then, YES, Epiphone...

    If all the facts are correct then, YES, Epiphone totally screwed up. The circuit connects the piezo pickup directly to a passive tone & volume control circuit stage which excessively loads down the...
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    The following was mentioned yesterday in post #7...

    The following was mentioned yesterday in post #7 in the thread at https://music-electronics-forum.com/showthread.php?t=47496
    Could attachment file size have something to do with the problem?
  17. Could be but, if so, wouldn't we expect to find...

    Could be but, if so, wouldn't we expect to find the 465 EIA code printed on the speaker frame?
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    I don't believe that shorting the terminals would...

    I don't believe that shorting the terminals would change the overall sound significantly. Going back to the original idea to reduce the overall acoustic source level, I suggest that you try the amp...
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    As pdf64 pointed out in post #7 that makes no...

    As pdf64 pointed out in post #7 that makes no sense for a Vibro Champ. Either you misinterpreted or GW was...well... "mixed up."
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    OK. That should be no problem for a properly...

    OK. That should be no problem for a properly working amp.
    And just to be clear, since I don't see it mentioned in this thread, you have an export model Fender Super Twin and are powering it with...
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    What is the timing of your On - OFF - ON - etc....

    What is the timing of your On - OFF - ON - etc. switching?
  22. After a dinner break (and I see that nevitslab...

    After a dinner break (and I see that nevitslab has also contributed to the discussion and made a really significant point about the feedback signal path)
    I offer the following:

    Maybe. However,...
  23. A couple of comments. Put the PI in the bottom...

    A couple of comments. Put the PI in the bottom chassis with the power amp. Use a multi conductor cable with 600 volt wire for the power suppy lines or make your own cable with individual wires in a...
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    Thanks for reporting the outcome and I’m glad you...

    Thanks for reporting the outcome and I’m glad you got the amp sorted out. It is interesting that a such a low value (100Ω) grid stopper resistor would make such a significant improvement.

    What...
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    I don't know if this is a fake. But The sales...

    I don't know if this is a fake. But The sales text includes "...As this has been recovered, the tolex is near mint..."
    One of my pet peeves regarding the use of the word "mint" by eBay sellers. ...
  26. May I also suggest that you consider removing the...

    May I also suggest that you consider removing the push/pull switch from the circuit? If the user likes the sound of the distortion when the knob is pulled I would understand why you would want to...
  27. The stories of being asked to fix other stuff...

    The stories of being asked to fix other stuff really sound familiar. There was a related thread on the subject (Customer Calls) back in 2013 at...
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    I agree with Jazz P Bass. Your 15V zeners are bad...

    I agree with Jazz P Bass. Your 15V zeners are bad per your test report.

    As you suspected the Fluke 179's test voltage is too low to test a 15V zener. Unless, of course, the zener is bad as you...
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