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  1. Thread: Web Browsers

    by dai h.
    Replies
    21
    Views
    1,215

    this works (as a temporary measure 'til they fix...

    this works (as a temporary measure 'til they fix the issue) but needs to be done each time you shut down and start up firefox again (not that big of a deal unless, say you have a huge number of...
  2. nice datasheet find. KCK (AFAIK) is Mitsubishi...

    nice datasheet find. KCK (AFAIK) is Mitsubishi Materials. I've seen seen "KCK" branded ceramics sold under Mallory brand.

    re: the voltage rating (for the KCK caps) : the datasheet remarks that for...
  3. Replies
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    1,473

    pic/description: ...

    pic/description:

    https://www.dirk-hendrik.com/ibanez.html#Super%20Tube%20Screamer%20ST-9

    schematic:

    https://www.dirk-hendrik.com/temp/ibanez_st9.pdf

    bit of discussion on aron's efx. forum:
  4. hi Chuck (mostly in "quiet mode" here)

    hi Chuck (mostly in "quiet mode" here)
  5. re: Google translated article and the (I'm...

    re: Google translated article and the (I'm presuming) orange floating menu thing that obscures the article, (in Chrome (browser)) I tried "Inspect" (command--right click mouse on the page to see it...
  6. Gregg, thanks for the info on the USSR tube. I...

    Gregg, thanks for the info on the USSR tube. I vaguely recalled that there was some EL34 equivalent info in old datasheets or books (and wasn't aware that they actually made one) so I didn't wonder...
  7. Replies
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    1,259

    unfortunately, NickB's files seem to be missing....

    unfortunately, NickB's files seem to be missing. :(

    (I'm far from expert but from what I vaguely understand) "conventionally good" (as in low distortion, clean ("neutral") performance...
  8. re: moisture sensitivity I've got some old...

    re: moisture sensitivity

    I've got some old packets of Japanese CC (which come sealed--unlike NOS Allen-Bradley CC), and they have small packs of silicon dessicant inside them.
  9. (replying to my own post here... lol :noob:) ...

    (replying to my own post here... lol :noob:)

    was thinking about how a piece of wood would cook and burn, and I'm thinking as long as I solder in a normal manner (i.e. quick) the body will be...
  10. Steve (or anyone), are there any negative effects...

    Steve (or anyone), are there any negative effects on the wood when applying the soldering iron to the copper foil?

    re: the ground loops, since currents are so ultra tiny (in a typical passive...
  11. Replies
    70
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    5,641

    some intonation related videos by David Collins...

    some intonation related videos by David Collins of Ann Arbor Guitars:

    (Guitar Intonation Physics)
    https://www.youtube.com/watch?v=NEjekEOMWmg

    (Temperament for Fretted Instruments)...
  12. Replies
    7
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    1,026

    KOA Speer makes that physical style (radial...

    KOA Speer makes that physical style (radial mount, flat leads, color dots), but in metal film and not (what I'm presuming to be) carbon film (in ye olde Arbiter trem?). (I can't think of any that are...
  13. Replies
    16
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    1,821

    hi, maybe check out R.G. Keen's GEO site (there...

    hi, maybe check out R.G. Keen's GEO site (there was a section on ghosting if memory serves). Also, this is an old ampage thread on ghosting (I remembered this (seemed pertinent and more...
  14. Replies
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    1,821

    hi, the bias circuit filters appear to be...

    hi, the bias circuit filters appear to be unchanged from stock, so that might be a possibility for hum to get in and intermodulate the signal
  15. Replies
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    6,930

    try a ribbon or rope thin enough to get under the...

    try a ribbon or rope thin enough to get under the knob. Tie it into a loop, get it under both sides to help give you leverage and pull up. Worked for me for a slippery knob on a Marshall SE100. (If...
  16. Thread: Tl074 upgrade

    by dai h.
    Replies
    25
    Views
    3,142

    how about the power supply caps? Since it's...

    how about the power supply caps? Since it's apparently a few decades old, the caps may be degraded and be contributing to noise (ripple and maybe from the digital portions) I would guess.

    As I...
  17. I would change all the old caps (oil and alu...

    I would change all the old caps (oil and alu electro). (Judging from the appearance of the parts) the amp (and the apparently stock components) are quite old (60s?). IME, the type of oil caps shown...
  18. Replies
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    5,677

    I agree with the views that say (or suggest) that...

    I agree with the views that say (or suggest) that the machine is simply too old to be useful (unless it's a special situation like Juan's and you know what you are doing technically). Plus, there has...
  19. Thread: Sansamp classic

    by dai h.
    Replies
    2
    Views
    4,953

    some anonymous Japanese guy rev. engineered it...

    some anonymous Japanese guy rev. engineered it (along with an Aussie guy (R.Strand?)) years ago, so the schematic should be on the web. (This one: )
    ...
  20. Replies
    70
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    5,641

    related links: ...

    related links:

    http://music-electronics-forum.com/t1300/

    http://music-electronics-forum.com/t28310/

    (post #164)
    http://music-electronics-forum.com/t29910-5/

    (post #22)
  21. Replies
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    5,641

    FWIW, an article by Simcha Delft I remembered...

    FWIW, an article by Simcha Delft I remembered seeing (plus a couple of links I stumbled into trying to find the article again) :

    Stephen Delft's Compensated Nut

    A Further Look at Guitar...
  22. I'm not much of a science person, but (at least...

    I'm not much of a science person, but (at least on the surface) it would seem that "electromagnetic" relies on electricity to be magnetic, so still "magnetic" but conditional on the electricity flow....
  23. It doesn't seem to me to be a question of...

    It doesn't seem to me to be a question of either/or, mains hum is both (i.e. has both electromagnetic and electrostatic components). So what has been recommended in past threads is to use some sort...
  24. (as I understand it) "buzz" is the higher...

    (as I understand it) "buzz" is the higher harmonics of the line frequency (50/60Hz) hum --higher frequencies that are more audible (since they take place in a range the human ear is typically more...
  25. Thread: Surround Dope

    by dai h.
    Replies
    20
    Views
    3,136

    vaguely remembered discussions about speaker...

    vaguely remembered discussions about speaker repair glue, saw this:

    Jensen Speaker - advice needed

    then this:

    https://www.youtube.com/watch?v=lxGswEB3O_Q

    and FWIW, there is a mention of...
  26. Replies
    41
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    3,257

    well it's not something I've worked out but it...

    well it's not something I've worked out but it just seems a lot more to ask from the power supply as compared to say, adding an extra 12AX7 (if similarly biased as the other ones, maybe 1mA x2, plus...
  27. Replies
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    3,257

    sounds risky (at least from the amp's...

    sounds risky (at least from the amp's perspective)--to be a bit more specific--drawing a lot more current from the B+ winding if it's not designed for it would create excess heat and nudge things...
  28. Replies
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    3,257

    Thanks. That makes sense from what I've read and...

    Thanks. That makes sense from what I've read and seen. Marshall (or their American distributor) apparently biased the 6550s as EL34s (i.e. as 25W plate dissipation tubes not 42W tubes--that the PT...
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