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  1. Replies
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    I would assume both of those, but since the amp...

    I would assume both of those, but since the amp is now long gone, I cannot confirm.
  2. Same reason they still use IC caps, they're cheap.

    Same reason they still use IC caps, they're cheap.
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    Yes, some of it is more similar, some of it less...

    Yes, some of it is more similar, some of it less so. And I do now see the 10R resistor at the input jacks between the two ground points. I guess in the end, wiring it as it arrived should be safe...
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    SVT power supply question

    SVT-HD limited edition, same as previous thread. I don't find an exact schematic, so I am working from the service manual. Couple of questions, mine has a single 40uF can (represented as C12B)...
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    "Does the tremolo sound any good? I can't believe...

    "Does the tremolo sound any good? I can't believe that circuit would work very well. "

    My '64 Jet's tremolo sounds fantastic, very swampy.
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    It looks like part of the tremolo to me. It's...

    It looks like part of the tremolo to me. It's grid is fed by the plate of the first oscillator triode, and it's output is fed back to the input, modulating it I think. But I don't understand why the...
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    I recapped a SVT before lunch yesterday. Not that...

    I recapped a SVT before lunch yesterday. Not that big of a deal.
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    Not sure, are you asking about recapping the amp,...

    Not sure, are you asking about recapping the amp, or modding the grounding scheme, which you say is working fine, and you want to keep it stock? I don't see how gain pedals would effect ground hum....
  9. Replies
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    What in the dang are these actually for?

    What is the reason Fender puts these cardboard strips in the newer amps? It's not really even fastened in, it's not electrical, so what is it there for? Is this another case of their legal team...
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    "It was an open 100k plate resistor on the PI...

    "It was an open 100k plate resistor on the PI tube !!"

    Pin #1 I'm guessing?
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    In certain cases like this, I insist the customer...

    In certain cases like this, I insist the customer buy tubes and bring them to me to avoid just that.
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    Holy Cow, we have a winner!

    A customer is dropping $1,300 to re-tube a limited edition Ampeg SVT with all NOS American made tubes. That's on top of the $300 to recap and service it. In all my years of doing this, that's the...
  13. Thread: The Lion Tamer

    by Randall
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    I think that is a cool as sh*t idea! I hope he...

    I think that is a cool as sh*t idea! I hope he sells a million of them. Why didn't I think of that? :noob:
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    That bulletin was put out in 2001, I wonder why...

    That bulletin was put out in 2001, I wonder why they didn't include the SVTHD in that list? The layout of this HD is different than the SVTs in the service bulletin, but it has the 22 ohm resistors...
  15. So glad you figured it out, I would have probably...

    So glad you figured it out, I would have probably missed that.

    No need to close a thread, it automatically falls away into the searchable archives as it ages with no additional input. Your good...
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    " That one cap in the top view of the chassis...

    " That one cap in the top view of the chassis threw me for a moment, until I saw the previous tech had used the clamp to mount a snap-in single section cap. "

    Yeah, me too. He used a pretty clever...
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    I just ordered the 33uF 600v axial, and...

    I just ordered the 33uF 600v axial, and 20/20/500v smaller 1" can (for a single 40uF can) from Just Radios at half the price of Fliptops, which was at $54 before shipping.
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    The 30uF 600v is the only one that I can't read...

    The 30uF 600v is the only one that I can't read the value from, so I have to go by the schematic there. Also, this schematic is provided under SVTHD service manual from Ampeg site, so I don't think...
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    Yes, it is the Limited Edition, black version,...

    Yes, it is the Limited Edition, black version, only 500 made. This is number 42. Pics as requested.

    55111
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  20. Thread: Schematics

    by Randall
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    Post #15 ...

    Post #15

    https://music-electronics-forum.com/showthread.php?t=38048

    Shame they didn't see fit to include the PT primary and switches.
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    So, looking at this schematic, where does one get...

    So, looking at this schematic, where does one get the 600v 30uF cap after the big 15 watt resistor? nevetslab?
    ...
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    1987 Ampeg SVT LE tubes

    Comes in as "everything works fine, just hasn't been serviced in 20 years". Once I got the darn heavy thing opened, I found everything covered in a layer of thick dust, including the 6 Sylvania...
  23. He originally posted in Tubes, but that one got...

    He originally posted in Tubes, but that one got moved to Other Amps at about the same time I suggested he might have been better served posting in this board, hence the two threads. And, I believe he...
  24. "The amp does play thru speakers ....so the...

    "The amp does play thru speakers ....so the customer did not know
    the output was so weak. He only brought it to me to replace
    frayed anode wires and a couple of broken RCA jacks at the CD input."
    ...
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    "Yes, yes. I'm sure most of us have all sorts of...

    "Yes, yes.
    I'm sure most of us have all sorts of adapters a cables made up to test every type of input and output Jack's we may encounter."

    I'm guessing the OP doesn't. That is who this was...
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    "Sure, but both sides are RED!!! How will you...

    "Sure, but both sides are RED!!! How will you know if the cable is connected in proper phase"

    I checked it with my meter that is faulty maybe.:surprised:

    But to your point, one side is ribbed...
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    In my shop I keep a 5' speaker extension cord...

    In my shop I keep a 5' speaker extension cord that makes quick work of trying different speaker configurations, or connecting to a cab when the chassis is on the bench.
    55003
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    Have we ruled out the speaker?

    Have we ruled out the speaker?
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