In Reply to: Capacitor or transformer coupling? posted by Tube Tourist on January 22, 2012 at 02:57:52:
For builders, the Hammond 126C interstage is way better than the name "Hammond" implies. Bifilar wound, 106H inductance and sounds great. I abandoned capacitors a while ago except for using high inductance plate chokes with preamp tubes like the 26, where I use Russian teflons. And certainly plate resistors are a big no.
But biasing is an issue here. If you direct couple you usually have a large cathode resistor which then needs to be bypassed. I dislike cathode bypass caps - polypropylenes are worse than no cap and electrolytics suck all the life out of the music. I use the 126C with a 46 tube and no cathode bypass (2.1K resistor) - that's the cleanest solution I've found and the combination works.
andy
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Follow Ups
- Hammond 126C - simple solution - andy evans 01:42:22 03/14/12 (0)