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effects loop?

Discussion in 'Amps and Cabs [BG]' started by Bassist519, Nov 27, 2003.

  1. Bassist519

    Bassist519 Guest

    Feb 6, 2003
    Albany,New York
    this might sound realy stupid but what is an effect loop. Does that mean it runs good with effects, or it has built in effects or what.
  2. JMX

    JMX Vorsprung durch Technik

    Sep 4, 2000
    Cologne, Germany
    A serial FX loop is just a "gap" in the signal path of a preamp or between preamp and poweramp section of an amp. You put your effects in there.
    With a serial loop, 100% of the signal are routed through the loop - this is for effects like compression etc. You can also "abuse" the FX send as a line/preamp out and the FX return as a line/poweramp in.

    A parallel loop has a mix pot that allows you to mix the original signal (dry) with the effects signal (wet), this is handy for chorus, because it avoids a muddy sound.

    Hope that helps.
  3. erik II

    erik II

    Jul 11, 2000
    Oslo, Norway
    I dunno JMX, but... that was pretty technical, don't you think? I don't mean to under-estimate you Bassist519, but - to be on the safe side - here's a more basic approach (imagine this comes before JMX's post):

    It's when an amp has one FX (effects) "send" and one FX "return" input (they may be named differently on some amps).
    You can then hook up an external effect unit like this:
    Amp "send" -> effect input - effect output -> amp "return". The signal from the effect unit will blend with the original amp signal.

    Now re-read JMX's post for elaboration. :D
  4. kirbywrx

    kirbywrx formerly James Hetfield

    Jul 27, 2000
    Melbourne, Australia.
    the most common way to use effects is method one in this picture:


    the effects 'loop' version is method 2

    i love primitave drawings :D
  5. Primary

    Primary TB Assistant

    Here are some related products that TB members are talking about. Clicking on a product will take you to TB’s partner, Primary, where you can find links to TB discussions about these products.

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