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The Official Marshall Studio Classic Thread Sc20

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

  1. Len

    Len Well-Known Member

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    Read earlier in this and other threads. The pop is not typical for Marshall amps and some people have an issue with it.
     
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  2. FIREpunkMEDIC

    FIREpunkMEDIC Member

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    Upon a 2nd rehearsal I think that the SC20H may go back too. It sounds GREAT, but isnt quite up to par with my '84 Jcm800 2204 vert input era. Cheaper to just attenuate when need be I think...
     
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  3. marshallmellowed

    marshallmellowed Well-Known Member

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    Exactly, although when I did my comparison, I didn't use my attenuator on the 2203x, and it was at fairly low volume.
     
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  4. Tbomb

    Tbomb Member

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    Ok so just got my SC20C today and I too have a very noticeable volume drop and the pop with my reverb pedal in the loop. I know my reverb pedal is true bypass, so I understand the pop; however according to another post in this thread Marshall said the volume drop is normal....so does that means it’s by design? If so why would they design it like that? Btw...I do love the tone of this amp regardless. Never had anything close to an JCM800 before, but always loved the tone.
     
  5. marshallmellowed

    marshallmellowed Well-Known Member

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    I think they mean it's "normal" for that amp. In other words, they're not going to openly admit there's anything wrong with the design. Not sure why they didn't use the same loop circuit they used in the 2203x. Bottom line, each user will have to decide if the design is "good enough" for them, for their needs.
     
    Last edited: Mar 27, 2019
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  6. Tbomb

    Tbomb Member

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    I guess I just don’t understand that when they tested the design they said “yeah the volume drop in the loop is ok and so is the pop with a true bypass pedal”. There’s so many pedals they are true bypass, you would think that they would have tested that before releasing this amp. Maybe I am missing something and if so I apologize for the rambling.
     
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  7. marshallmellowed

    marshallmellowed Well-Known Member

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    It's "normal" just burn your receipt and drink the Koolaid. :)
     
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  8. rich88uk

    rich88uk Well-Known Member

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    I had 2 which both done it. The volume drop doesn't bother me now as it's not something which is switchable anyway, I just leave it on. And the small drop helps me turn the master up a bit more anyway at lower volumes in the house.

    With the pop in the loop to solve it you could either put a buffered pedal before the true bypass one and then there is no pop, or change your reverb pedal to a buffered one. I ended up selling my mini HOF and mini flashback to get the Boss RV6 and Boss waza DM2W anyway. Both buffered and sounds better then the TC in my opinion.
     
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  9. johan.b

    johan.b Well-Known Member

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    The only reason you know there is a drop is because marshall gave you a switch to hard bypass the loop.. most loops don't have this feature, so how would you know? ..
    And true bypass popping .. that problem was solved in the 70's ..
     
  10. Tbomb

    Tbomb Member

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    Love the amp regardless and since I need to have a little reverb flavor in my tone the loop will always be on as well as the pedal, so for me I don’t really consider it an issue. It just has me scratching my head a bit from a design perspective, especially at the price point they are. All is well....Thanks for the replies gents.... Cheers!
     
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  11. Mitchell Pearrow

    Mitchell Pearrow Well-Known Member VIP Member

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    Enjoy your new amp brother! Cheers Mitch
     
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  12. marshallmellowed

    marshallmellowed Well-Known Member

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    For me, the only issue with the volume drop would have been if it limited achieving the full volume of the amp, but it did not. The higher you run the master, the less noticeable it is, and it's pretty much non existent at full volume.
     
  13. rich88uk

    rich88uk Well-Known Member

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    Yeah I agree, I have noticed that as well.
     
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  14. LazyPitufo

    LazyPitufo Member

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    Well guess what guys, my sc20 combo stopped working yesterday:( It turns on and power tubes light up, but no output to the speakers whatsoever, gonna take it back to Strait Music tomorrow, I guess this is what I get for buying an amp that was on display to the public from a vendor... Oh well, at-least it's under warranty .
     
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  15. rich88uk

    rich88uk Well-Known Member

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    Not good, hope you get it sorted soon
     
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  16. LazyPitufo

    LazyPitufo Member

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    It's all good, I specifically checked with the manager. I said "So if I go home with this and the fx loop craps out on me in a week or something along those line, I'm covered right?". He assured me I can bring it in and their techs will fix it. Also if that doesn't fix the problem Marshall has a 5 year warranty when you register your amp on their website, so I should be golden.

    It was a shame too, I literally just got it dialed in the day before, got the mic in the right position and was ready to start recording.
    Get home yesterday and nothing:/

    Felt like a piece of my soul was disintegrated.
     
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  17. Tbomb

    Tbomb Member

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    Hope it’s an easy fix....
     
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  18. johan.b

    johan.b Well-Known Member

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    Probably just a bad tube and a fuse. .
     
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  19. Madfinger

    Madfinger Well-Known Member

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    Imagine if it was shipped to half a dozen people playing through wrong impedence speakers under a return policy.
     
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  20. LazyPitufo

    LazyPitufo Member

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    So it works half the time now guys, yesterday when I got home it started working again...
    Still gonna take it in anyway
    Random

    Anyone know why it wouldn't work and then magically start working again?
     

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