Tube designs: 45 driving 45/2a3/300b?

Veniogenesis · 21st April 2007, 06:23 PM

Hi everyone,

I've been thinking of going all out and building a super expensive low power (SET perhaps?) tube amp with 45 tubes in driver position, powering 45, 2a3, or 300b. I've seen some designs with the 45 as output tubes, but I haven't found one with it in driver position. Does anyone have any ideas?

Cheers and thanks!

Eli Duttman · 21st April 2007, 07:33 PM

Quote:

Does anyone have any ideas?

45s are scarce and expensive. Also, there is the issue of controlling residual hum levels. Check out the curves for triode wired 6V6s. They give away NOTHING in the linearity dept. to the revered 6SN7. Use a triode strapped 6V6 to drive the DHT "final".

BTW, the 6AQ5 is essentially a 6V6 in a 7 pin mini bottle. It would kick butt as your driver.

JoshK · 21st April 2007, 08:40 PM

Lynn Olson's Karna uses the 45 as a driver. Tubelab's 845 amps use the 45 as a driver.

cotdt · 23rd April 2007, 12:59 AM

Quote:

Originally posted by Eli Duttman

45s are scarce and expensive.

They are worth it!

audiodesign · 23rd April 2007, 07:59 PM

look this my new 845 simple amp.

http://www.audiodesignguide.com/New845/New845.html

21st April 2007, 06:23 PM	#1
Veniogenesis diyAudio Member Join Date: Feb 2007 Location: United States	Tube designs: 45 driving 45/2a3/300b? Hi everyone, I've been thinking of going all out and building a super expensive low power (SET perhaps?) tube amp with 45 tubes in driver position, powering 45, 2a3, or 300b. I've seen some designs with the 45 as output tubes, but I haven't found one with it in driver position. Does anyone have any ideas? Cheers and thanks!

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21st April 2007, 08:40 PM	#3
JoshK diyAudio Member Join Date: May 2004 Location: Toronto, ON	Lynn Olson's Karna uses the 45 as a driver. Tubelab's 845 amps use the 45 as a driver.

23rd April 2007, 07:59 PM	#5
audiodesign diyAudio Member Join Date: Sep 2005	look this my new 845 simple amp. http://www.audiodesignguide.com/New845/New845.html

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