Love Kitten Article from Valve

[xcortes]

Does someone has the love kitten article from Valve?

Keto and I have been experimenting with attenuators after transformers -with much success methinks-  and would love to have a copy of the article. If someone could scan the article and send it to me I would really appreciate it.

Thanks

ps I don't know who wrote it!

 

[Paul Joppa]

The link is long dead, and I can't find the article among my old files. But Shawn Micheal's referenced post reminded me of what it was. Very very simple - just a B7 15K:500 transformer, followed by a 500 ohm potentiometer. It's only useful if you have way too much gain, but many systems do have way too much gain. Running the volume control at a low impedance of 500 ohms gives it much more drive. Many observers have found low-impedance level controls to sound better, though except for the drive current available there are no really plausible theories as to why.

 

[xcortes]

Thanks Paul and Shawn,

That's what I'm running right now, a 15K:600 Cobalt B7 with a 680 ohm resistor across the secondaries. It sound's really nice and gives me more than enough gain (or ungain!) in my system. I'm about to order a 1K Penny and Giles pot -no 600 available-. My idea is to use this transformer/pot combination as part of an active preamp but since it sounds so good I'll include a switch to bypass the active circuit and go directly from the pot to the output.