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In Reply to: RE: SE 6CB5 : @ 23 watts anode triode mode , LSES exp. update posted by drlowmu on December 08, 2016 at 07:39:49
"Even an inexpensive ( under $12.00 ) Triad C-40X ( 320 mHY at 10 Ohms ) will work with no problem, IF implemented as I suggest, for ONE channel's L1 only. A separate B+ filter ( and, for that matter - power transformer / rectifier tube ) will outperform shared parts sonically, in any decent amp."
No Jeff the Triad C-40x will not WORK at 53mA without buzzing!
It WILL work in a cap input supply. I've gone as low as 1uF before the Triad C40x.
Triad C40X will NOT work as "input choke" under any circumstances I've found.
Great choke for $12 though!
Follow Ups:
OK Rage,
In my November 2016 built JJ 2A3-40 amp, using about 55 mA per channel, I Thought I had used 320 mHY / 600 MA. Traid C-40 Xs, and had I had absolutely NO problem. But Rage, I was mistaken.
You MAY have been correct if you have direct experience. But I need to ask, was your Triad C-40X L1 choke just doing duty for one channel , not a shared channel supply, as you seem to indicate ??
I DID have 320 mHY / 600 mA. chokes in my newest build for L1, but instead of Triads, they were the same-rating Stancor C-2708s in there, ( NLA ) and Jeffrey confused the two chokes. My mistake. Thanks for pointing this out to me.
I think Mikey Samra used the C-40X in some duty other than as L1, and he told me how much he liked it.
Jeff
yes I ran the C40x first in my 2a3 amp, one PER channel not shared supply.
so dual LCLC.
input choke was C40x, second choke was your Heyboer 7 ohm model
they feed per channel 2a3 at 43mA and 12ax7 at 1/2mA.
They buzzed pretty good. Had to take them out and replace with Triad .035h and went flywheel.
If C40X worked I would use them for both positions and do the LSES that way rather than acquiring those Stancore chokes.
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