1. Register NOW and become part of this fantastic knowledge base forum! This message will go away once you have registered.

Radial JCR reamping weirdness - please help

Discussion in 'Pro Audio Equipment' started by sharkfistsound, Apr 17, 2013.

  1. sharkfistsound

    sharkfistsound Active Member

    Hey everyone, I ran into a strange thing with my Radial JCR reamp box.

    My usual chain: 1/4" balanced trs out from my focusrite saffire pro 40 to XLR (male) input on the pedal. Then 1/4" output from the pedal to the input on the amp.

    This always produced alot of noise and an unsuccessful reamp.

    Todays chain: 1/4" out from the saffire pro 40 to XLR input on the pedal. Then ran a cable from the 1/4" INPUT on the pedal to the input on my amp.

    This doesn't seem like it'd be the correct way but I got a way better sound and no noise at all.

    Do you think it's possible my reamp box is wired wrong? Or is there something I'm missing?
  2. Boswell

    Boswell Moderator Distinguished Member

    I'm sorry but I'm having trouble understanding your configuration. You talk about the amplifier and a pedal, but where does the re-amp box come in your chain? What sort of pedal is it that has an input comprising an XLR male T-eed off to a 1/4" jack? XLR-M connectors are usually outputs.

    What do you get if you try something simple: the Radial re-amp box connected using a balanced cable from the analog output of the interface to the Radial JCR balanced input (which is an XLR female in parallel 1/4" jack) and then an unbalanced jack lead from the JCR output to the guitar jack input of the amplifier? Leave the pedal out of it, at least for now.
  3. sharkfistsound

    sharkfistsound Active Member

    Hey Boswell, sorry for being misleading, by "pedal" i did mean the reamp box. And yes, I am running it exactly how you described. Balanced 1/4" trs coming from the output of my Saffire. The XLR end of that cable is plugged into the XLR (f) input on the reamp box. I then run out of the 1/4" output on the box to my amplifier. This is what produces an unpleasant "chhhhhhhhh" type of sound. When i go out of the 1/4" jack marked "input" to the amp, i get a good signal. Im just kind of confused on why the output the manual says to use is sounding horrible, yet the "input" is putting out a clean signal to the amp
  4. Boswell

    Boswell Moderator Distinguished Member

    Assuming you have the Level knob on the Radial JCR fully clockwise, what I suspect is that the output of the Saffire is at too low a level, so that it is sufficient to drive the amp input directly (although unbalanced), but when put through the Radial box step-down transformer, there is insufficient signal to present an adequate level to the amp.

    By way of diagnostic, when you go through the JCR box and the amp is making the "chhhhhh" sound, what happens if you unplug the cable from the output of the interface?
  5. bouldersound

    bouldersound Real guitars are for old people. Well-Known Member

    That bypasses the box's circuitry and sends the line out right to the amp.
  6. Kapt.Krunch

    Kapt.Krunch Well-Known Member

    Assuming Output 1? No attenuation set? All software/hardware levels properly set? If yes:

    XLR/TRS pin configurations of both units match, and cable test good and properly wired? If yes:

    Adjustable output level from Focusrite properly set to match input level of Radial, and adjustable output level of Radial matched to input level of amp (proper gain-stage)?

    Just some ideas.

    From Focusrite:


    Line level 10 x 1/4 inch TRS Jack.

    Software switched attenuation (–20dB) on outputs 1 and 2 (for sensitive active monitors).
    • Hardware and Software Controlled Digital Volume control for all outputs (assignable through control panel).

    Good luck,


Share This Page