Hi I need your comments on this page, providing a good explanation of why wire wound resistors and pontentiometers are better for audio applications.
http://www.aikenamps.com/ResistorNoise.htm
http://www.aikenamps.com/ResistorNoise.htm
High thermal dissipation available.
More tolerant of voltage on the wiper.
Lower noise.
For parts over ~10K ohms inductance not a factor @ audio frequency. Also not a problem in triode plate loads.
Not good choice for grid, plate, cathode stoppers. Here low inductance and short leads are critical.
More tolerant of voltage on the wiper.
Lower noise.
For parts over ~10K ohms inductance not a factor @ audio frequency. Also not a problem in triode plate loads.
Not good choice for grid, plate, cathode stoppers. Here low inductance and short leads are critical.
A bit thread necro.. but I take it that something like this would be usable for initial plate adjustments, prior to replacing with fixed resistances. Voltages ~120-200V.
https://uk.rs-online.com/web/p/potentiometers/1070785/
This would be in series with fixed resistances for larger values. Insulation 500V, capable of 2W. The over spec is simply to allow reuse at a later date with 320V or 400V.
https://uk.rs-online.com/web/p/potentiometers/1070785/
This would be in series with fixed resistances for larger values. Insulation 500V, capable of 2W. The over spec is simply to allow reuse at a later date with 320V or 400V.
Why 10 turn? there is no need.
I would choose 93R1A-R22-A15L | Bourns 1 Gang Rotary Cermet Potentiometer with an 6 mm Dia. Shaft - 10kΩ, +-10%, 2W Power Rating, Linear, Panel Mount | RS Components
A lot less expensive.
I would choose 93R1A-R22-A15L | Bourns 1 Gang Rotary Cermet Potentiometer with an 6 mm Dia. Shaft - 10kΩ, +-10%, 2W Power Rating, Linear, Panel Mount | RS Components
A lot less expensive.