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what driver tube to use when running PP Triode 6AQ5s?

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Posted on January 11, 2017 at 11:35:42
bcguitar
Audiophile

Posts: 1308
Location: Maryland
Joined: March 2, 2005
I know a lot of people like triode connected 6V6 so I am doing 6AQ5s but what cheap driver would be good?

 

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RE: what driver tube to use when running PP Triode 6AQ5s?, posted on January 11, 2017 at 12:58:42
sony6060
Audiophile

Posts: 623
Location: SE MI
Joined: August 8, 2014
I like USA manufactured Raytheon 6CG7, but that lower gain tube needs a preamp. I use 1/2 a section of another Raytheon 6CG7 as a preamp. If using just one driver/phase splitter only, I would use a 12AT7. It has enough gain.

 

RE: what driver tube to use when running PP Triode 6AQ5s?, posted on January 11, 2017 at 13:06:16
bcguitar
Audiophile

Posts: 1308
Location: Maryland
Joined: March 2, 2005
yea, I plan to use a preamp as the 6aq5 amp would just be a power amp

 

RE: what driver tube to use when running PP Triode 6AQ5s?, posted on January 11, 2017 at 13:34:38
sony6060
Audiophile

Posts: 623
Location: SE MI
Joined: August 8, 2014
You cannot beat USA manufactured Raytheon 6CG7 black plate, but are rare & almost all used are unbalanced due to hard use in TV sets. An alternate are Sylvania 6SN7GTA. The Sylvania have a hotter high frequency response, but extremely clear sounding vs other 6SN7s.

Only 12AT7s I recommend are Sylvania 12AT7 triple mica grey plate or for a more neutral sound are Tung Sol 12AT7 black plate. Some are noisy, but quiet Tung Sol stay quiet.

 

RE: what driver tube to use when running PP Triode 6AQ5s?, posted on January 11, 2017 at 15:30:45
sony6060
Audiophile

Posts: 623
Location: SE MI
Joined: August 8, 2014



Here is a triode PPP 6V6 I am building.

 

RE: what driver tube to use when running PP Triode 6AQ5s?, posted on January 11, 2017 at 17:18:52
Eli Duttman
Audiophile

Posts: 9316
Location: Monroe Township, NJ
Joined: March 31, 2000



The key difference between the 'AQ5 and 6V6 is g2 fragility. Use a higher value resistance in connecting g2 to the plate and all will be well.

I used the 12AT7 in "El Cheapo" as the driver and it is FINE. :>D

Eli D.

 

Thanks to you and Eli D! NT, posted on January 11, 2017 at 17:46:23
bcguitar
Audiophile

Posts: 1308
Location: Maryland
Joined: March 2, 2005
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