@elliotbnewcombjr.I never pay attention and that your loss needing 16 ohms.
like I said buy a raven they make speakers too!
like I said buy a raven they make speakers too!
TUBE BIAS, socket to me!
BIAS: (I'm starting from zero understanding)
I have never measured/adjusted bias in the 3 tube amps, 3 tube receivers, and 2 tube preamps I have acquired over 47 years. I just switched my current Cayin from 6550's to KT88's. Adjust bias? Adjusters inside, scary electrocution warnings. I could pay someone else to do it, i.e. Steve at VAS 1 hr away in NJ, soooo,
What really counts? (personally I don't care about either heat or life, but would like to understand)
Heat?
Life?
Output stays Matched when adjusted?
Acoustic Performance?
_________?
Over the years, fronts off, bottoms off, I hose em down with contact cleaner/lubricant, compressed air, all controls and switchers, any adjusters, swish full spin back and forth. Kill any spiders, look for, replace the rare burnt resistor.
Then leave any adjusters (whatever they are) in the middle position, button it back up.
Two tube testers, my big hickock always agrees with small portable one, test strength, shorts, matched strength old and newly purchased. Large collection of NOS, used. Often used test essentially same strength as new ones.
When they go, it's usually a short.
I have never measured/adjusted bias in the 3 tube amps, 3 tube receivers, and 2 tube preamps I have acquired over 47 years. I just switched my current Cayin from 6550's to KT88's. Adjust bias? Adjusters inside, scary electrocution warnings. I could pay someone else to do it, i.e. Steve at VAS 1 hr away in NJ, soooo,
What really counts? (personally I don't care about either heat or life, but would like to understand)
Heat?
Life?
Output stays Matched when adjusted?
Acoustic Performance?
_________?
Over the years, fronts off, bottoms off, I hose em down with contact cleaner/lubricant, compressed air, all controls and switchers, any adjusters, swish full spin back and forth. Kill any spiders, look for, replace the rare burnt resistor.
Then leave any adjusters (whatever they are) in the middle position, button it back up.
Two tube testers, my big hickock always agrees with small portable one, test strength, shorts, matched strength old and newly purchased. Large collection of NOS, used. Often used test essentially same strength as new ones.
When they go, it's usually a short.
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- 91 posts total
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skypunk I would like to hear a Raven tube amp. Do you live near central NJ? Trust me, the sound of my 16 ohm speakers is no loss. And, there is less distortion from an amp’s 16 ohm tap. https://forum.audiogon.com/discussions/16-ohm-speakers-any-amp-sounds-better-with-more-resolution-sp... |
tvad thanks for the link, that fine looking unit came up in this related thread https://forum.audiogon.com/discussions/16-ohm-speakers-any-amp-sounds-better-with-more-resolution-sp... I'm gonna stick with this amp, and have Steve from VAS do it while I watch, then I will use my long wooden screwdriver and do it myself. Evidently my very old Multi-meter is a good bit less accurate than a digital one, so I will get one of them. The amp sounds awesome, I just wanted to learn how important people thought proper Bias was. As always I have gotten a lot of help here and learned a lot. |
- 91 posts total