Effects loop problem on Marshall JCM2000 DSL 100 Head

Discussion in 'Amps/Cabs Tech Corner: Amplifier, Cab & Speakers' started by annostyle, Feb 27, 2012.

  1. annostyle

    annostyle Member

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    I recently bought a 2005 Marshall DSL100 head off eBay. Everything sounds killer on the amp, but when I run some pedals in the effects loop (delay, noise suppressor), the tone becomes very thin and noisy. Even with the pedals turned off. This doesn't happen when I don't have anything plugged in to the effects loop. Any insight as to what causes this? Hopefully a reasonable solution?
     
  2. phsyconoodler

    phsyconoodler Member

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    pedals don't belong in effects loops.That's the easy answer.The reason is they don't have sufficient buffering to bring the signal strength up high enough to use in an un-buffered effects loop.
    Effects loops on most amps work best with rack-mount effects that are specifically designed to buffer or boost the signal to overcome the losses.
    The Marshall effects loop obviously doesn't have a level buffer to boost the input or output signal,or at least you aren't using it.
     
  3. ghost driver

    ghost driver Member

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    I believe the Marshall DSL100 loop has a fx boost as well as most Marshalls. Be sure to push it in.
     

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