Tube replacements or substitution

[Westernelectric]

Anyone have a question about tubes??
I was a member of the tube design team for Western Electric in KC MO. and a few years with GE in KY. Way back in the day. Since those days. The last 4 decades My passion is tubes. If anyone wants to know the best replacement or substitution for a certain type of tube please let me know. I can also offer advice for what design is the best for the tube of interest.

Semiconductors are cool ,but Tubes are Hot!

 

[nigelwright7557]

What are the best tubes for rock guitar amplifiers ?
I built an 80watt valve amplifier with 12ax7 front end 12au7 splitter and 4 off el34 output stage. It sounds more country and western than rock.

 

[mcandmar]

As above, which tubes are closest to the 12AU7 / E80CC / 6SN7 medium mu triodes?

Also is there anything similar to the WE 421a.

 

[toriversen]

The combination of tubes should be fine for a rock amp, I would take a look at the tone stack if this amp is supposed to be used for rock music. The tone stack determinds a lot of the "sound" of a guitar amp. Also the bias for the tubes, for a rock amp you would, as a "rule of thumb", design for some more distortion than you would for a typical country amp.

 

[toriversen]

12AU7 substitutes could be(among others): ECC82,CV4003(Brimar, Mullard), CV491(Brimar), 6189(philips;Mazda), ECC802S, 6067, 7730, B329, B749, E82CC, 7316 and ECC186.
Some of them might not be pin compatible. There are no russian direct equivalents to this tube, so searching for cheap replacements is difficult.

 

[jpak]

Anyone have a question about tubes??
I was a member of the tube design team for Western Electric in KC MO. and a few years with GE in KY. Way back in the day. Since those days. The last 4 decades My passion is tubes. If anyone wants to know the best replacement or substitution for a certain type of tube please let me know. I can also offer advice for what design is the best for the tube of interest.

Semiconductors are cool ,but Tubes are Hot!

Do you have any WE literature you can share?

 

[HpW]

Anyone have a question about tubes??
I was a member of the tube design team for Western Electric in KC MO. and a few years with GE in KY. Way back in the day. Since those days. The last 4 decades My passion is tubes. If anyone wants to know the best replacement or substitution for a certain type of tube please let me know. I can also offer advice for what design is the best for the tube of interest.

May tell us why the NOS sound that much better than the today's available brands.

While I do not like to pay for quad NOS KT88 about 2000 bugs.

Cheers

Hp

 

[v4lve lover]

Do you have any WE literature you can share?

I second that, Would be absolutely wonderful to read some in house literature on design, or their products. Perhaps some factory photo's as they are hard to come by

 

[hectori]

i have a question... do you have 300b free samples??

 

[Thebrain]

i would really love to hear about the testing methods and about the different materials used.
and ofcourse any literature would be a great read.