Plate Resistors on power tubes?

[Dr Tony Balls]

I've done this before! A guy brought me a 1st gen Model T that was hacked up to hell and I brought it back to normal. Here's what it looked like when I got it:

Holy moly! What was going on with those strip boards? Im surprised the 6.3v winding could handle that many extra tubes! You gotta think somebody knew they were doing something wrong when they had to use that many zipties.

Your rebuild is beautiful! Better than stock. Im surprised how quiet the one i'm working on is with the stock wiring. Non-twisted filament lines just mingling anywhere they please. It seems like Sunn just had luck on their side. My concert lead is like a work of madness.

No clue on the strip boards, and there was an extra transformer added but I dont remember what it was for....could have been extra filament supply. And on the topic of twisted filaments...they can help in certain places, and can never hurt, but arent always necessary. Hiwatt only twisted the filaments that ran to the preamp tubes, not the power!

[JMFahey]

IF original amp came with those plate resistors, leave them.
The "power/voltage increase" expected will be *absolutely* inaudible, while even slight instability will ruin your sound big time, why risk it for nothing?

[Kagliostro]

Here there is an answer also from Mr. Merlin

https://el34world.com/Forum/index.php?t ... 220649#top

K

[roberto]

Thanks Franco,

so even Merlin confirms that.
Thanks