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  1. I don't think resistor power is a concern here....

    I don't think resistor power is a concern here. 300V across a 10M resistor or 2kV across a 100M resistor can't be a power issue. Rather these are safety limits regarding isolation, creepage and...
  2. Sorry, you're right, only even order harmonics...

    Sorry, you're right, only even order harmonics are octaves. Nevertheless I think that the main reason for dissonance is equal temper tuning and intermodulation as well as the fact that e.g. string...
  3. Completely agree. Real harmonics can't be...

    Completely agree.



    Real harmonics can't be dissonant by definition as they are just octaves of harmonic No.1 = fundamental. Of course intermodulation products of not harmonically related...
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    Single ended amps require better plate and screen...

    Single ended amps require better plate and screen supply filtering than PP amps.
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    Schematic shows a 100 Ohm sag resistor. But it...

    Schematic shows a 100 Ohm sag resistor. But it won't have much dynamic effect with a class A output stage as average power/current consumption is more or less constant.
  6. As others already said, there shouldn't be a...

    As others already said, there shouldn't be a problem with connecting an 8 Ohm speaker to the 4 Ohm min output. It is certainly no OT issue. In fact the 8 Ohm load means lower primary and secondary...
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    Oh boy, so many strange fractional measures. As...

    Oh boy, so many strange fractional measures. As far as I know (and measured) original vintage strat string spacing (55.6mm) never changed (unfortunately the neck/fretboard widths did). Means that the...
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    Well, it was you who introduced the term file...

    Well, it was you who introduced the term file "bite". In posts 50/55 I meant to say that a sharp file has no effect on my '62 and Fender Vintage saddles other than dulling the file - completely...
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    This is exactly why many aftermarket saddles need...

    This is exactly why many aftermarket saddles need to be ground to fit vintage strat fretboards.
  10. The voltage divider R72/73 takes care that with...

    The voltage divider R72/73 takes care that with good caps the DCV across C34 is 50% of the voltage at point Z, i.e. about 240VDC. If it's much lower C34 is leaky and must be replaced. What is the Z...
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    If you still have them, you might try the file...

    If you still have them, you might try the file test.



    May not really matter here, but MIM bridges and saddles have just above/close to vintage string spacings, but I don't like the cast zinc...
  12. What I implied was that "export" PTs used at 50Hz...

    What I implied was that "export" PTs used at 50Hz can can be expected to get warmer than with 60Hz.
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    Then try the Fender Vintage parts. BTW, over...

    Then try the Fender Vintage parts.

    BTW, over the decades I tried and collected many different makes including "Pure Vintage" and KTS titanium saddles. The most annoying problem I find with most...
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    My '62 saddles as well as the contemporary Fender...

    My '62 saddles as well as the contemporary Fender Vintage Replacement saddles do not "bite" at all (I thought I was clear on that). The latter changed over the years (I have samples dating back to...
  15. Thanks for explanation, Enzo. Don't forget we...

    Thanks for explanation, Enzo. Don't forget we have much more line volts in 50Hz countries :)

    Actually there are some advantages of a higher line frequency, e.g. PTs have less core losses and thus...
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    ??? From literature I know about steel...

    ???

    From literature I know about steel hardening methods. Even did a vacation job in spring hardening when at school.
    I assume the harder '62 saddles and the Fender Vintage Replacement saddles...
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    Always experimenting. I prefer to rely on my own...

    Always experimenting. I prefer to rely on my own observations. With saddles I try a small file and/or see how easy they bend, carefully using a vise. Or compare indents from an automatic center...
  18. Thread: Cleaning PCB

    by Helmholtz
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    I am not familiar with water soluble flux and...

    I am not familiar with water soluble flux and just learned that it must be completely washed off because residues are corrosive
    (so I wouldn't use it in electronics):
    ...
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    Saddles don't change "bass" (low frequency...

    Saddles don't change "bass" (low frequency fundamental frequency) response.

    In 2005 I bought 3 complete Callaham vibrato bridges + some extra saddles and hardware. I noticed that the saddles and...
  20. So what's the point?

    So what's the point?
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    To me it seems clear that these speakers are not...

    To me it seems clear that these speakers are not original/ OEM. They don't have the Jensen frame code and everything looks too new. Jensen and Oxford ceramics from the era had black frames and...
  22. In my experience the AC30 humdinger is very...

    In my experience the AC30 humdinger is very effective regarding compensation of 50Hz hum. The position of minimum 50Hz hum may not provide optimum cancellation of more audible higher line harmonics,...
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    How do they sound?

    How do they sound?
  24. How this? What's the difference (language...

    How this? What's the difference (language barrier)? What would be a real hum balance?
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    Have you considered to use ballpoint pen springs...

    Have you considered to use ballpoint pen springs like https://www.thespringstore.com/springs-for-ballpoint-pens.html ?
    Many more vendors on the web.
  26. Thread: Cleaning PCB

    by Helmholtz
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    Careful with nitro thinner or acetone. Might...

    Careful with nitro thinner or acetone. Might dissolve more than you want (like components' coatings and markings, solder mask, many plastics etc.). Quality flux doesn't need to be removed. It...
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    The complete shipping weight of a Fender Vintage...

    The complete shipping weight of a Fender Vintage vibrato (including springs, clamp and mounting screws) is 1.4lbs. Not much difference here.

    Anyway I don't like Floyd Roses, probably because of...
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    Are you sure that a vintage strat vibrato with...

    Are you sure that a vintage strat vibrato with the large steel block is substantially lighter than a Floyd Rose? Vintage type weighs 390g/13.8oz without springs and mounting hardware.
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