SC20H effects loop - is it losing volume or tone ?!

Discussion in 'Marshall Amps' started by riffpowers, Nov 17, 2020.

  1. riffpowers

    riffpowers Member

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    i’ve recently got enough to testing the effects loop on my SC20H.
    I’ve noticed that when it’s engaged there’s a drop in volume.
    A quick search in here tells me that they’re all like that.
    But I wondered - is it just a little volume that’s being lost or is it sucking any of the tone as well ??
     
  2. JBA

    JBA Well-Known Member

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    No noticeable tone change on mine. Some folks are upset with this drop and some see it as a bonus due to the “tapered pot” type of effect giving us a more controllable volume. I’m in the second camp and can’t understand how this would be a negative because it’s not a switcher. If it was a switcher, then I’d have my pitch fork out. Marshal seems do be doing lots of dumb shit lately.. but they do exchange the crap ones out when you buy new so not the end of the world. So the odd guy runs into a bad tube or a quality issue.. just getter sorted out because they do sound so dam good once you have YOUR good one!
     
    Last edited: Nov 17, 2020
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  3. tallcoolone

    tallcoolone Well-Known Member

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    All loops suck tone to some degree, I think the SC20 loop is a good one.
     
  4. riffpowers

    riffpowers Member

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    Thanks for the comments !!
    I’m not bothered about a small volume drop , if that’s all it is then It’s easy sorted !!
     
  5. ken361

    ken361 Well-Known Member

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    louder the amp is the better I dont use the loop much anymore
     
  6. riffpowers

    riffpowers Member

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    I was only going to put an eq pedal in the loop for a solo boost
     
  7. JBA

    JBA Well-Known Member

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    Are those two separate statements? This amp can’t get any louder (full tilt) because the the loop is dis-engaged.
     
  8. ken361

    ken361 Well-Known Member

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    at 7 on the master there isnt much volume loss. I feel with the loop off might have a slight more balls
     
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  9. JBA

    JBA Well-Known Member

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    Ok, to be honest I haven’t really listened critically to the difference at that level. Mine seems to go 1:1 a little below yours. I did flip the loop in and out while maintaining the same acoustic level with the volume. (at my typical volume level) and couldn’t detect a noticeable change in tone. I will add that I’m buffered and don’t get any of the reporting switch pop neither.
     
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  10. pedecamp

    pedecamp Well-Known Member

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    Yeah I didnt like the loop on this amp. it dropped volume and I could hear an audible pop when turning unbuffered pedals on/off so I returned it and got an SV20H which doesnt have any of these problems. :yesway:
     
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  11. Biff Maloy

    Biff Maloy Well-Known Member

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    I have the SV20H and 2525H. I haven't noticed anything like that with them but the SC's loop this has been noted quite a bit. But, as I understand it this is way less noticeable as the volume of the amp goes up and cranked it is irrelevant.
     
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  12. JBA

    JBA Well-Known Member

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    Yes, volume thing is not a problem IMO but I can see how if your getting popping noises when switching pedals like Pedecamp experienced this thing would likely go back for exchange if not permanently. However now that I have one, I can’t see going without it and I would certainly get a buffered pedal in there to make that problem go away. ;-) My first sc20 sucked, I gave up for while but I’m glad I picked up another! I’ve also had some time with both your amps and find the whole line to be great.
     
    Last edited: Nov 17, 2020
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  13. Del Rei

    Del Rei Well-Known Member

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    The SC20 have some volume drop when loop in engaged, but only in the "lower" volumes... After Master on 5 it start to match the volumes... But I didn't notice the big difference in tone.

    Recorded this video playing with loop on/off and going from Master 10 to 1:

     
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  14. JBA

    JBA Well-Known Member

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    Did I ever tell you your videos are awesome? :thumb:
    Your videos are AWESOME! :cheers:
     
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  15. riffpowers

    riffpowers Member

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    That was really helpful !!
     
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  16. pedecamp

    pedecamp Well-Known Member

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    This very well could be an undocumented feature in the instruction manual for home players, a built in attenuator for low volume play! :yesway:
     
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  17. Del Rei

    Del Rei Well-Known Member

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    LOL Thanks man! :D

    :cheers:

    For sure.
    It's one way more to control the volume! ;)
     

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