robrob's Recent Activity

  1. robrob liked jhundt's post in the thread Tube amp Ohm Mismatch - Settle this for me once and for all.

    I spent 90% of my life playing into mismatched cabinets. I had a beautiful blackface Super Reverb; the speakers were blown when I got...

    Aug 21, 2019 at 4:52 PM
  2. robrob liked NSB_Chris's post in the thread JCM800 6V6/6L6/EL34 in a Princeton Reverb Chassis.

    More progress, but still a long way to go! [ATTACH] [ATTACH]

    IMG_3465.jpg IMG_3466.jpg Aug 21, 2019 at 4:45 PM
  3. robrob liked NSB_Chris's post in the thread JCM800 6V6/6L6/EL34 in a Princeton Reverb Chassis.

    My build has started. [ATTACH] I have a gutted silver face twin reverb cabinet. I purchased an undrilled steel chassis with a right...

    IMG_3462.jpg Aug 21, 2019 at 4:42 PM
  4. robrob liked corliss1's post in the thread Why need to separate cathode for RobRob's cascade switch mod?.

    Correct - since the cathodes are no longer in parallel you'd double the resistor value.

    Aug 21, 2019 at 4:40 PM
  5. robrob replied to the thread Why need to separate cathode for RobRob's cascade switch mod?.

    A common cathode resistor for two gain stages in series can cause interaction and oscillation. My "must be separated" statement is a...

    Aug 21, 2019 at 5:40 AM
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