please check my schematic

[ArcticBreaze]

hi there could some one please check there arn't any obvious errors in this, copying from my amp build of 3 years ago. which i want to clone but lost the original schematic. also changing from 6sl7 to 5751 so may have to change cathode values, sugestions welcome

 

[turk 182]

sorry the only thnhg that stick's out is the mispispeling of

 

[kevinkr]

Typo in thread title has been corrected. 😀

 

[djgibson51]

Good to see you still building. Any plan for grid or screen stopper resistors?

 

[ArcticBreaze]

thanks for then spelling Corrections, hope its still a C+

first amp I have built in 3 years, been fixing a few. got board during lock down and fixed a Holden 100 reverb, seems I got the bug again. and I have 2 beehive box's sitting there already routed for 5f2 or 5e3. so I thought I'd clone this one from years ago as it sounds so good.
but at full volume it gets a weird "Twak" could grid stoppers fix this any suggestions on what to use.

 

[ArcticBreaze]

a closer look

had a closer look with nice sun comin in the window this is closer to whats there.
note there is a grid stopper on the 6l6 that I forgot to look for on the tube socket and second coupling cap is 0.1 not .02 may change it in the next one to 0.2

 

[Rick PA Stadel]

I'm probably just being OCD, but I like to have a DC path for the 2nd stage grid, that doesn't depend on a pot -- which, given enough time and wear, will ALLways become noisy. Also hate it when the DC operating point can vary with the Volume control setting.

Cheers

 

[JMFahey]

I guess 1M or 2M2 from wiper to ground won´t change sound much, if at all.

 

[ArcticBreaze]

thanks

thank you I will try that in the new build.


just waiting on parts now it seems covid has made the world big again and freight takes it's time getting here now