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  1. B

    Origin Mods!

    Hi, I've been trying to find a way to tame the brightness of my origin 20h (ice pick cap à la Rob Robinette, increased caps for the tilt, ...) but what finally worked was to add plate bypass caps at V1. I added 1nF's around R64 and R70. If you find your 20h on the shrill side, this will help...
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    Origin 20 elements of schematic

    Hi, Trying to go back to the subject, the first thing I is noticed a mistake in the tilt schematic I did first... Here's the new one. Jason, do you have a possibility to check if I'm correct this time? From the original one the full gain should bypass the tilt, but it's not what I hear. And is...
  3. IMG_20200720_114942

    IMG_20200720_114942

    Origin 20h tilt / gain schematic
    • Bobbonne
    • Media item
    • Comments: 0
    • Category: Marshall Amps
  4. B

    Origin 20 elements of schematic

    Hi, Sorry I changed phone and didn't see your messages. I'll try to take a look at them soon. Cheers, Pierre
  5. B

    Origin 20 elements of schematic

    Unfortunately I think the power section would be too difficult for me with the relays. You're interested in the power reduction? I was really just looking for places to tame the high mids. I ended up putting an ice pick cap, a la Rob Robinette. It's sort of classic, but the tilt thing is a...
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    Origin 20 elements of schematic

    Hi, I traced a some parts of my 20h and I thought some of you might be interested. Sorry for the ugly drawings. And there might of course be mistakes. V1 There's a relay to replace a bypass switch (I guess) that I haven't drawn. And the tilt function seems to really be a mixer between two caps...
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    The Official Marshall Origin 20 Thread...

    Thanks for the advice. Rolling off the presence, the tilt and the treble does help a bit. Rolling the guitar tone too. Though it's a fine line before the saturation losses a little of its bite. Cheers, Pierre.
  8. B

    The Official Marshall Origin 20 Thread...

    Hi, Thanks for the welcoming and the answers! I'll try your suggestions and report if any luck. Thanks! Pierre.
  9. B

    The Official Marshall Origin 20 Thread...

    Hello everyone, First post for me here, great forum with loads of info. I have the 20H and I'm experiencing fizz in the highs when pushing both master and gain. I ruled out the speaker by trying a different amp and I don't think it's either coming from the preamp. I tested pushing the preamp...

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