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The Official Marshall Studio Vintage Thread Sv20h

Discussion in 'Marshall Amps' started by Michael Roe, Jan 26, 2019.

  1. ichocobo

    ichocobo Member

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    Stupid question: why don't you use the high treble low input to jumper to the jubilee instead of the pedal? Are there any side effects using this method?
     
    Last edited: Sep 1, 2021
  2. Biff Maloy

    Biff Maloy Well-Known Member

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    I was just looking to get each amp to be a complimentary tone together. Not for one to influence the other. And, the pedal just happened to be near by.

    Plus, i dont use a jumper that much anyway on the SV.
     
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  3. ichocobo

    ichocobo Member

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    Maybe I'm missing something, I mean chaining both amps a la Hendrix. This way they share the same pedalboard but one doesn't affect the other as far as I know PXL_20210901_170001313-2553.jpg .
     
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  4. Biff Maloy

    Biff Maloy Well-Known Member

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    I understand the chaining part. Wasn't just Hendrix.

    I guess the real answer to your question is i didn't have a reason or serious thought for one way vs the other. A lot of dual amp rigs have been split by a stereo pedal also. I usually use a delay. I hadn't had the matching slant 2x12 cabinets long. Up till then i had used a 2061CX 2x12 and just used one of the heads. So it was more so to hear the amps together than anything.
     
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  5. ichocobo

    ichocobo Member

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    Ok, it was the other way around in fact. I was asking to ensure I was doing it right...!
    I see an advantage with a chorus or delay turned on, but since you had it turned off I was wondering the reason to do it that way besides convenience. Thank you!
     
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  6. Biff Maloy

    Biff Maloy Well-Known Member

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    Amp ABY and pedal switchers that also do that have been on my list. I dont use a lot of effects at one time but i tend to swap a few around. Get those options organized to use if i want along with the amps. Tired of plugging....unplugging....

    I don't see anything wrong with what you're doing. It's just another way to get what you want. It must be working for you.
     
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  7. marshallmellowed

    marshallmellowed Well-Known Member

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    One thing to keep in mind, when you jumper out of the low input to go to another amp, you're probably going to have a slight loss of gain on the SV20. Anytime you plug into both the Hi and Low input, you'll be changing the input impedance slightly (typically results in a slightly lower input level). Using a pedal to split the signal to 2 amps would eliminate that side effect, but also introduces it's own side effects. No wrong or right way to do it.
     
    Last edited: Sep 1, 2021
  8. purpleplexi

    purpleplexi Well-Known Member

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    I always love going to the big M - like you I find the staff will do anything to help. One time I went in and Lemmy's roadie came in with Murder 1 for a service. Another time my six button footswitch had died. I had emailed and told them I was coming. I parked, walked to the door, waved the old switch and the girl just handed me a new one. Got back to the car and my wife said 'are they closed?'. I said 'no I've got the new one'. Took perhaps 25 seconds. She was amazed. Best customer service ever. Even walked into Jim once. 'Are they looking after you?' Didn't matter that I was a nobody....
     
  9. G the wildman

    G the wildman Well-Known Member

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    yeh, that is great. Such a culture comes from the top. Jim must have been a real people person.

    last time I went, I had the factory tour, just a great memory.

    G
     
  10. purpleplexi

    purpleplexi Well-Known Member

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    Yeah the other time I met him was at a product launch. Stood in line to get my signed poster and there was no - OK you've got your poster sod off. Stood chatting away for prob 10-15 mins about all sorts of stuff. In my experience totally nice guy. I know there are others who have a different opinion but I take people as I find them.
     
  11. JAC

    JAC Well-Known Member

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    I've had mine now for a few weeks. I love it so far. I'm waiting for the SV-212 cabinet to get shipped to me. It is on back order but, I'm hoping to get it soon. Right now I'm going through a WGS Green Baret 12 inch 16 ohm through a Raven cab which had a Celestion G12 originally in it.
     
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  12. wntbtw

    wntbtw Well-Known Member

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    What was the problem that you were having with your SV20?
     
  13. G the wildman

    G the wildman Well-Known Member

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    I had a nasty buzz at the end of all power chords or strong notes.

    I rolled and changed all valves. Marshall put another set of finals in, rebiased and changed one pre-amp tube.

    Gave me a guitar to test it. Hey presto. All fixed.

    I wonder how many famous musicians have played that guitar.

    Amp is great now.

    G
     
  14. ken361

    ken361 Well-Known Member

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    rebiased?
     
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  15. Georgiatec

    Georgiatec Well-Known Member VIP Member

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    Looking for something I don't remember what.
    Was it a Yamaha SG? If it was, I've played it....I'm not famous though. :cool:
     
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  16. G the wildman

    G the wildman Well-Known Member

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    The Technician, said he set the bias to factory settings.

    G
     
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  17. G the wildman

    G the wildman Well-Known Member

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    No it was a Gibson Les Paul. Very well used.

    Not famous - there is still time.
    G
     
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  18. purpleplexi

    purpleplexi Well-Known Member

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    The brown norlin? I've played that. I'm sort of famous. In Kettering....
    SVs are cathode biased. AFAIK it can't be adjusted.
     
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  19. purpleplexi

    purpleplexi Well-Known Member

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    Out of curiosity did they plug your amp into a variac? Every time I've tested an amp there it's been on a variac. Don't know whether it's because they love variacs or because there's huge changes in the available current due to the fact that it's a factory with loads of electrical stuff going on and off all the time.
     
  20. G the wildman

    G the wildman Well-Known Member

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    I know very little about electronics but I was told that SV20s are cathode biased.

    However, I am looking at the invoice right now and it says. "Faulty output valves replaced and Bias set to factory specification."
     
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