Recent content by Mortfly

  1. M

    Better attenuator than Hotplates?

    Make this! It's good
  2. M

    Simple Attenuators - Design And Testing

    It’s a really good sounding unit. And loved by my family!! The -3db increments are perfect I think. What did you reckon about the eq at high attenuation?
  3. M

    Simple Attenuators - Design And Testing

    How new is the 125 unit I wonder? I really appreciate JohnH having all this info and testing available. Bloody good mate!!!! I'm using mine all the time. Thanks
  4. M

    Simple Attenuators - Design And Testing

    Good planning is simply good!
  5. M

    Simple Attenuators - Design And Testing

    The -3dB switch has been replaced and all is well in the world of Design "M" Attenuators. This circuit is definitely worth building - thanks heaps for all your work JohnH and also for making the development of the circuit available to us! Much appreciated. Really. I mean it!.:agreed: tmingle's...
  6. M

    Simple Attenuators - Design And Testing

    Hi tmingle, you’re probably already all over the line out circuit but I’ll post this link anyway. Hope it helps someone http://www.dougcircuits.com/lineout.html
  7. M

    Simple Attenuators - Design And Testing

    Cheers JohnH. I appreciate your kind words. And once again bloody awesome work you’ve done on this. It fills a gap!! I got my resistors from mouser online. Selected for high tolerance and price. Inductors from Speaker Bug. The inductors are listed at 0.33 and 0.52. I didn’t bother to measure...
  8. M

    Simple Attenuators - Design And Testing

    Yep I should have mentioned it’s an 8 ohm build into 8 ohm cabs. I’ll check through my wiring once more - just in case there’s a fluff up somewhere!! Edit***** Yes I do have a error: the -3dB switch is broken .... I'l fix it today or tomorrow and edit the post above. Those old switches are cool...
  9. M

    Simple Attenuators - Design And Testing

    Hi Guys, I finished building this attenuator and I've played it through various amps with both single coil and humbuckers. Here's the build: It works incredibly well at getting loud amps down to low volumes - so absolutely YAY!!! Those resistors stayed very cool - the inductors were warmer but...
  10. M

    Simple Attenuators - Design And Testing

    Got all my bits ..... time to wire it up......give me a while tho!!!!
  11. M

    London Power Scaling Mod???

    Ive got and used VVR/power scaling on a couple of my amps for years and years. Here's my 2cents: as an attenuator it is poor because you can get way better sounds with other methods. However it is amazing if it is viewed as a tone tweak at low SPL especially when using the master volume..... try...
  12. M

    Simple Attenuators - Design And Testing

    Woo Hoo.....very timely schematic JohnH. Thanks
  13. M

    Has anybody here used London Power Scaling?

    Two of my amps with power scaling / vvr. One has fixed biased and the other cathode biased power stage. Been using for years. I reckon It is best as a tone device really rather than sound pressure reduction. To dial in the sound at higher volumes as opposed to attenuation. Well that is in the...
  14. M

    2525h Volume Drops At Gig Volume

    Could check the connections and lead between the amp and the cab/speakers


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