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In the Forum: Melquiades Amplifier
In the Thread: To drive the 6C33C...
Post Subject: Re: To drive the 6C33C...Posted by Thorsten on: 7/11/2005
Hi,
 Romy the Cat wrote: |
| I liked the most when I drove the 6C33 plate with 230V. I run all possible currents and… surprise, surprise I ended up at 150mA. |
|
I find the same true with other power triodes.
When comparing operating conditions near rated power (eg. 300B @ 400V/80mA) I like the sound least, I personally tend to prefer lower currents and voltages TOGETHER with a much higher nominal load impedance. Eg. I generally like the 300B best at 350V/60mA/5K Load, compared to 350V/80mA/3K for WE91 and the often found 400V/80mA/2K5 in commercial Amp's for maximum power.
I generally find that Valves sound better keeping dissipation to no more than 1/2 rated anode dissipation and equally that "low current high load" operation sounds better than "high current low load" operation. If in doubt and more power is needed I tend to prefer to raise the Anode Voltage and the load, not the anode current, but all rules have occasional exceptions.
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