Cathode resistor and IM distortion

[maxkracht]

Are you sure the noise is coming from the power amp? Maybe you are getting partial cancellation of the noise when running PP. Any schematic/pictures of the amp?

[mike-p]

Hmm that's an interesting idea. It is definitely intermodulation distortion. Leaving a low string ringing and then bending notes above it you can hear the low harmonic out of tune bending in the opposite direction.

[mike-p]

Are you sure the noise is coming from the power amp? Maybe you are getting partial cancellation of the noise when running PP. Any schematic/pictures of the amp?

Tried to pm you but its stuck in my outbox?

[maxkracht]

I'm an idiot, share pictures on here so the smart kids can help.

[mike-p]

Is this local negative feedback increasing headroom or that my imagination?

[Phil_S]

Tried to pm you but its stuck in my outbox?

For better or worse, it remains stuck until the recipient reads it. <shrug>

[sluckey]

Tried to pm you but its stuck in my outbox?

For better or worse, it remains stuck until the recipient reads it. <shrug>

It's not really stuck. That's a feature that tells you the message has not been read. I like that feature.

[Colossal]

Tried to pm you but its stuck in my outbox?

For better or worse, it remains stuck until the recipient reads it. <shrug>

It's not really stuck. That's a feature that tells you the message has not been read. I like that feature.

The bummer is that the forum software no longer sends out notifications to one's email account notifying them that they have a PM. Or if it does work, it's a very rare fluke. Our former, intrepid sysop could never make any headway with the site owner to do an upgrade, so, here we are...

[sluckey]

I have never relied on email notifications for PMs. Anytime I send a PM I will be frequently checking on the forum.

[mike-p]

So I still have the unbypassed portion of the cathode resistor installed but I feel I've lost sparkle and drive but maybe my imagination... can I clip a small bypass cap across the unbypassed resistor to compare?

[Stevem]

Yes any value cap you want as long as it’s rated for a high enough voltage.