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Suhr Reactive Load vs React IR vs Real Cabinets as a load

Discussion in 'Backline' started by Machinated, Aug 6, 2021.

  1. Machinated

    Machinated Member

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    So I bought a React IR from St Rock last year, and recently bought a Suhr Reactive Load to compare.

    I figured I'd compare side by side, acting both as a load box, but also as a DI when using an external cab. I was actually quite surprised how different they sound when being used just as a DI - the React IR generally sounds more damped and darker and the Suhr is more loose and squishy. Ideally I'd test with some other dedicated DI boxes but I don't have anything appropriate on hand.

    It's also very interesting to compare how much a different cabinet load affects the output from an amp. Each cabinet makes the amplifier itself sound pretty drastically different, and its important to remember the influence of a guitar cab extends far more than just the speakers.

    I've uploaded a Pro Tools session comparing the different loads and DI Thru Outputs (unfortunately the React IR was being clipped internally on the EVH cab which I missed). If you don't have PT, you can just grab the audio files and load them into your own DAW). These are direct signals from the amp so will need an IR applied to them to sound like a mic'd cab.

    https://www.dropbox.com/s/z3jb8fibbut4ij2/Impedance Loads.zip?dl=0

    I have like 10 different 4x12's at the studio at the moment and about 15 different amps, so I'll try and compare how different amps react with different cabs when I get a chance. Hope this is interesting

    EDIT: Just did some quick tests with a Rev G Dual Rectifier. Here the React IR probably sounds a little closer to the load of the cab but again albiet slightly more dry/damper and a little darker. Suhr sounds more squishy and "smiley face" still. Files here for comparison: https://www.dropbox.com/s/viomhf3p9vmszk1/Dual Rectifier Imepdance Loads.zip?dl=0
     
    #1 Machinated, Aug 6, 2021
    Last edited: Aug 7, 2021
  2. deLuther

    deLuther Member

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    Thanks for comparison.
     
    Machinated likes this.
  3. Machinated

    Machinated Member

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    so I had more time to compare 10 different 4x12's and the Suhr and React IR. All signals are direct from the amplifier, and the connected load is changing between each file

    Files here: https://www.dropbox.com/s/d2pjs97gru5vvwc/Impedance Load Test.zip?dl=0

    DI's from Jeff Dunne. Amp is a 1981 JCM 800 2204

    Cabs were:

    Mesa OS 1999 V30's
    Mesa OS 2002 V30's
    Marshall 1960TV 1991 Greenback m25's
    Orange PPC412 1999 V30's
    EVH 412 2007 G12EVH (Heritage m25's)
    Marshall MF400 2003 K100's
    Marshall 1960B 2003 T75's
    Marshall 1960A 1977 Blackback H30's
    Marshall 425A 2009 G12C Greenbacks
    Marshall (rare sealed back) 4x12 with 2003 K100's

    Plus Suhr Reactive Load and St Rock React IR. Quite an interesting comparison
     

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