K&K Audio / Lundahl Transformers

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Hi voltage regulator kit

141.239.172.61
Posted on May 2, 2017 at 13:21:06
DAK
Audiophile

Posts: 2712
Location: PACIFIC
Joined: August 8, 2010
 I am wanting to try regulated G2 voltage for kt120 and kt150 tubes. And it would be nice if i could also use the regulator to power the 2 6sn7 driver tubes. would your hi voltage regulator be up to the task? I have read that if you regulate the driver tube in SE circuit one should also regulate the B+ for the power tube? Is this true? thanks for the help.
ps, i wanted to read the manual about the hi voltage reg but my computer doesnt have word.

 

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RE: Hi voltage regulator kit, posted on May 2, 2017 at 17:46:18
KevinC
Manufacturer

Posts: 2984
Location: NC
Joined: April 19, 2001
 The regulator is capable of delivering up to 100mA to the load + the shunt element.I have built many tube amps with regulated input stages and no amplifiers with regulated output stages. Many of these amps were very good sounding, so I can't agree with the authors of your reading material.

Send an e-mail to kevin@kandkaudio.com and I will send you a pdf of the instructions.

Kevin Carter
K&K Audio
www.kandkaudio.com

 

RE: Hi voltage regulator kit, posted on May 3, 2017 at 11:07:18
DAK
Audiophile

Posts: 2712
Location: PACIFIC
Joined: August 8, 2010
 Ok. My plan is to get your hi voltage regulator and power the screens for a pair of kt150 in a SE stereo amp. Then tap off the voltage via suitable Resistor and cap combo for the B+ of 2 6sn7. Would there be any problems doing this. The issue that you may not be familiar with is that the plate of the 6sn7 is connected to the plate of the kt150 for anode to anode feedback. cheers, Dak

 

RE: Hi voltage regulator kit, posted on June 13, 2017 at 11:22:26
Palustris
Audiophile

Posts: 2408
Location: Cape Cod
Joined: September 12, 2008
 "I have read that if you regulate the driver tube in SE circuit one should also regulate the B+ for the power tube?"

If you regulate the B+ you need to regulate the BIAS so that the bias and output tube plate voltage track one another when there is a change in line voltage.

 

RE: Hi voltage regulator kit, posted on June 13, 2017 at 12:42:15
DAK
Audiophile

Posts: 2712
Location: PACIFIC
Joined: August 8, 2010
 Well, i mostly wanted to know if what i read about the need to regulate B+ if one is regulating the driver tube B+. I am thinking of getting a high voltage regulator for the G2 supply and also for the driver tube B+.

 

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