This is a really great video. Thank you for putting it together. For those that haven’t watched yet, be sure to watch it in full. Very important safety regarding the caps later in the video.
"...for like, a hundred years......" LOL. Love it. I learned to do basic cleaning a tube swaps on radios when I was a little kid in my grandpa's basement. He was one of those 'twice retired' guys that worked 20 yrs 1 place (drafter/machinest), then another almost 20 for the railroad (machinist/metal worker), THEN when he retired retired (and got both watches for it) he was a historical gunsmith, woodworker, photographer, geneologist, and general all around 'that guy' for odd bits of knowledge. Good times. He lived to be a hundred, and passed about 10 yrs ago. Thanks for the fond memory!
Awesome video! Thanks Roy! After about 15 years of off and on playing, i've finally took the plunge into the tube amp world, and i've always heard how deadly tube amps can be if you don't know what you're doing.
Awesome video! Is there a reason why power tubes would be so far apart even if they were supposedly a matched set? I have a Marshall 6100 with EL34s. My plate voltage is 471 and with using the formula I should have around 37.15 MA. I have one tube measuring 39 and another one measuring 43. Does that mean the one tube is bad?
Looking for a bias probe. Noticed the one you recommended is dual. How did you use it for the quad power tubes you were biasing? Also when biasing amps- should the control knobs on the amp be set at noon or max?
@@jad.y I put one of each pair of tubes in the quad setup. It can actually use a single bias probe if you want also. The key is making sure you have a pretty matched quad setup of output tubes.
ROY COX, What is those electrical inspection sticks called for $25? and that T-socket tool you have is called what? I'm not sure what you mean by "Renegade" voltage that tube sockets can still have after the filter caps have been discharge, Renegade voltage I never heard of?
You're right - don't discharge high voltage caps with a screwdriver! Besides being dangerous, the heavy current transient can damage the cap(s). Best to use a purpose-designed discharge tool.
ALWAYS discharge capacitors. Whether the amp has been on recently or has been unplugged for a week. Any time you're in there unplug and discharge. This is a habit you want to have.
This is a really great video. Thank you for putting it together. For those that haven’t watched yet, be sure to watch it in full. Very important safety regarding the caps later in the video.
This is a really great video. Thank you for putting it together.
For those that haven’t watched yet, be sure to watch it in full. Very important safety regarding the caps later in the video.
"...for like, a hundred years......" LOL. Love it. I learned to do basic cleaning a tube swaps on radios when I was a little kid in my grandpa's basement. He was one of those 'twice retired' guys that worked 20 yrs 1 place (drafter/machinest), then another almost 20 for the railroad (machinist/metal worker), THEN when he retired retired (and got both watches for it) he was a historical gunsmith, woodworker, photographer, geneologist, and general all around 'that guy' for odd bits of knowledge. Good times. He lived to be a hundred, and passed about 10 yrs ago. Thanks for the fond memory!
remember the Barn? I think it was in Towson....
I do!
Great video. Thanks much.
thanks so much! glad you enjoyed it!
Awesome video, my friend! Very informative and to the point. Thank you.
Excellent teaching!
Thank you for this. I performed this service on my Carvin X-60, and now it sounds like new. But now I'm curious about trying different tubes🤔
Awesome video! Thanks Roy!
After about 15 years of off and on playing, i've finally took the plunge into the tube amp world, and i've always heard how deadly tube amps can be if you don't know what you're doing.
Awesome video, thanks for posting!
I would love more details on your amplifier chassis stand. It looks like a fantastic design.
Great vid. Thanks for sharing.
SRV would run his amps super hot!!! Awesome video learned a lot.
Awesome video! Is there a reason why power tubes would be so far apart even if they were supposedly a matched set? I have a Marshall 6100 with EL34s. My plate voltage is 471 and with using the formula I should have around 37.15 MA. I have one tube measuring 39 and another one measuring 43. Does that mean the one tube is bad?
Man what a great video!!!!!!
Looking for a bias probe. Noticed the one you recommended is dual. How did you use it for the quad power tubes you were biasing?
Also when biasing amps- should the control knobs on the amp be set at noon or max?
@@jad.y I put one of each pair of tubes in the quad setup. It can actually use a single bias probe if you want also. The key is making sure you have a pretty matched quad setup of output tubes.
Excellent video, just what I was looking for. Thank you
@@paulrimmer5632 thanks so much! So glad it was helpful!
Which bias probe do you use? Does it matter if it measures the plate current or the cathode current?
ROY COX, What is those electrical inspection sticks called for $25? and that T-socket tool you have is called what? I'm not sure what you mean by "Renegade" voltage that tube sockets can still have after the filter caps have been discharge, Renegade voltage I never heard of?
You're right - don't discharge high voltage caps with a screwdriver! Besides being dangerous, the heavy current transient can damage the cap(s). Best to use a purpose-designed discharge tool.
Very helpful thanks
Outstanding ! Thank you !
Any body knows anything about the ( Wang VT-5) Tube amp
You have failed
ALWAYS discharge capacitors. Whether the amp has been on recently or has been unplugged for a week. Any time you're in there unplug and discharge. This is a habit you want to have.
This is a really great video. Thank you for putting it together.
For those that haven’t watched yet, be sure to watch it in full. Very important safety regarding the caps later in the video.