• WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
    Building, troubleshooting and testing of these amplifiers should only be
    performed by someone who is thoroughly familiar with
    the safety precautions around high voltages.

Potentiometers - USA

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Brit01 said:
guys, there are 3 types of RK27 also.:

Snap-In Potentiometers 2-GANG 100K AUDIO

Potentiometers Flat 20mm 100k

Potentiometers Slotted 20mm 100k

What is the difference here?


Look at the datasheet (there is a link on Mouser)

One has a slotted shaft (for a knob or to use a screwdriver for turning)

There other has a flat on the shaft to aid in keeping the knob from rotating independently of the shaft when the knob is fastened with a setscrew or a knob with a D-shaped hole.
 
Lots of noise

Question regarding a 10K alps I already have.

Lats night I put it into one of my linestage/headphone amps.

I'm getting huge amounts of noise when I go anywhere near the metal volume knob and hell breaks loose when I touch it.

Do I need to ground the outer casing or what am I doing wrong?

I have the third prong attached to the star grounding system.
 
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