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  1. Replies
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    Chassis and parts... great deal

    Guitar Tube Amplifier Chassis Small Box Marshall Head Style w Sockets Fuseblock | eBay
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    1,768

    I have a new in the box, lacquered, brown thread...

    I have a new in the box, lacquered, brown thread tweed 5E3X2 2x12, cabinet if interested.... I was going to put it on eBay this week.
  3. Need some help in the UK. Near'ish south of London!

    Looking for someone in or around Couldson Surrey UK, south of London who is a bit Tech savvy to look at an amp for a friend of mine.
    Very simple three tube Champ type amp.

    Any takers?
    There...
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    2,195

    Sometimes the actual grid of the preamp tube...

    Sometimes the actual grid of the preamp tube "leaks" DC voltage to the previous stage.... tried a few different preamp tubes?
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    When I do the choke mod I rewire the power tube...

    When I do the choke mod I rewire the power tube sockets like Fender did on their 6L6 amps...
    1500 ohm grid stopper resistor from lug 1 to 5 and the new 470-1000 ohm screen resistor from lug 4 to 6....
  6. During that period, I think Ruby was relabeling...

    During that period, I think Ruby was relabeling inexpensive Chinese 6V6s but they were working with them to come up with a slightly better design that could handle +420vdc.
    As to needing to be...
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    Assuming it does this with the power tubes...

    Assuming it does this with the power tubes installed, try it without the power tubes OUT...uninstalled, to determine if the power tube's screens shorted to the cathode or "ground" internally, ...
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    Ground your power cord's wire all by itself and...

    Ground your power cord's wire all by itself and make it the longest of the three power cord wires so it is the last to come off the chassis if it gets yanked out.
    Your Red/Yellow, high voltage...
  9. It's the dropping resistor of the node in front...

    It's the dropping resistor of the node in front of that new one that will have additional current flowing and drop more voltage... so, you'll be installing two new resistors, with the original...
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    As a hobby of sorts, I just to refurbish vintage...

    As a hobby of sorts, I just to refurbish vintage tube testers and calibrate them.
    Many times this problem is a bad connection on the switching circuit that supplies the different filament voltages...
  11. ***Not saying do this*** But, there was a reason...

    ***Not saying do this***
    But, there was a reason lots of amps made with the on-off switch on the volume pot actually would break the neutral wire instead of the hot lead.
  12. That question was just a bit nebulous so I'll...

    That question was just a bit nebulous so I'll just ask...
    do you have an amp with an unknown OT and speaker combo where you are trying to figure out what speaker load to work with for the best...
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    If you are worried about the stock diodes and you...

    If you are worried about the stock diodes and you want to use the 2Kv diodes, see if you can strap a 5 watt 470 ohm resistor across the speaker jack leads somewhere in the chassis.
    It's pretty...
  14. V1 V2 V3... starting from where? 3 and 8 are...

    V1 V2 V3... starting from where?
    3 and 8 are cathodes of the 12AX7.... unless a phase inverter tube, shouldn't be more then a couple volts there unless the cathode is not grounded through a cathode...
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    I've been forced to use magnetic loops.......

    I've been forced to use magnetic loops.... QRM/QRN kinda sucks around here too.
    From my old shop, I called the FCC once because my neighbors RFI and radiated power line noise was so bad I couldn't...
  16. It might be to develop some kind of low bias...

    It might be to develop some kind of low bias voltage... especially if everything else (common mode) is referenced to that PT side of the resistor... have you drawn out a schematic?
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    Well, I'd keep the Triode OT anyhow... they are...

    Well, I'd keep the Triode OT anyhow... they are very well made and you can use it for another build later.... looks like you are into it anyhow so why not just start stocking some cool stuff on your...
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    By the way... the classic 50's way those Fender...

    By the way... the classic 50's way those Fender transformers were made "IS" with the ground lead soldered right to the OT's channel mount band.
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    Peavey... snookered.... different words, same...

    Peavey... snookered.... different words, same meaning.... have the TEE shirt.
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    Don't feel bad... I get punished and humiliated...

    Don't feel bad... I get punished and humiliated all the time and I've done hundreds and hundreds!!!
  21. Roland has replaced odd TD parts for me at very...

    Roland has replaced odd TD parts for me at very reasonable prices..... so I'd ask and see what happens before trying to figure it out the hard way.
  22. If you want to experiment with that concept, get...

    If you want to experiment with that concept, get a few 5 watt, 1000 to 4700 ohm resistors, same value for each tube, and feed the screens of the 6L6 power tubes with those resistors...
  23. 606 looks like Schumacher or Woodward-Shumacher...

    606 looks like Schumacher or Woodward-Shumacher
    Could be 1961, 1971 any maybe even 1981.... the other numbers look like model # and or
    who the transformer was made for.
  24. Oh yeah!

    Oh yeah!
  25. It sounds like you want to wire the filament...

    It sounds like you want to wire the filament string wired up the old 50"s way... that is the inferior way.
    However, if yes, ...then use one green wire to the sockets and ground one green wire....
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    A proper running 5E3, clone or not, with close to...

    A proper running 5E3, clone or not, with close to "classic corrected voltages" through out the B+ rail, will make around 10-12 watts max.
    Everybody else is lying or not running classic voltages and...
  27. Hey, if everbody here knew everything, this forum...

    Hey, if everbody here knew everything, this forum would be pretty damn boring to be sure!!
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    TEAC 3430

    Anyone have experience with these old Reel to Reel tape machines.
    My brother has one that has a broken belt drive and nobody around here wants to touch it.

    Oops.. sausage fingers, I think it is a...
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