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T Series EQ curve - graphic EQ in FX loop = awesome key click!

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  • Brendon Wright
    It sounds good, Papus!
    The Hammond's the closest keyboard instrument to a rockin' guitar. That's why I love it too.

    Leave a comment:

  • T Series EQ curve - graphic EQ in FX loop = awesome key click!

    My T202 has the first few Carsten Myers & Kon mods, plus a few of my own: remove key click filters, single trigger percussion, fix 16' drawbar volume, lower manual bass foldback.
    I only removed the key click filters in the lower and upper manual preamps, I never progressed to removing the filters and changing the EQ curves in the recovery amp.
    I've installed an effects loop at pin 3 of the recovery amp, the signal is approximately consumer line level.
    Carsten's mods include extensive alterations in the recovery amp to the T's EQ curves to enhance the key click, fatten up the bottom end and match the overall curve to that of a console.
    I realised this could be achieved at least partially by inserting a 10-band graphic EQ into the effects loop, instead of all the tedious soldering and swapping of board components.
    I had an old Genexxa EQ lying around, so I patched one side of it into the effects loop on my T202.
    Holy cow, what a difference!
    In principle you could apply this approach to tame any organ which has strayed from the "ideal" EQ curve.
    I set the EQ curve to match the bypassed volume level.
    If you invert the curve, you can see where the T's horrible anti-key click filter and bass roll-off kicks in. What was Hammond thinking?
    I'll post audio samples when I am able.

    *edit: audio sample added
    T202 with Genexxa 10-band EQ in effects loop, through 2009 Marshall 2061x and 1972 vintage Marshall 2038 cabinet with Pulsonic Greenback speakers.
    I switch the EQ in and out at various points in the recording. The raw T202 is much more mid focused, lacking bottom and high end.
    You can't beat a tonewheel Hammond into a Marshall stack!

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    Warning: I am not a keyboard player, I'm a guitarist who happens to be a fan of Jon Lord.
    Attached Files
    Last edited by Papus; 06-13-2019, 08:26 PM.