Balance Pot

[redrooster]

If I was looking to buy a 500k ohm balance pot for an old 1960s radiogram what should I look for? Besides the correct shaft length,diameter etc. Should it be Linear,logarithmic or just a balance potentiometer?

 

[DF96]

Depends on the circuit. Most likely are either a single linear pot, or a dual log-antilog pot.

 

[redrooster]

Depends on the circuit. Most likely are either a single linear pot, or a dual log-antilog pot.

Thanks mate,your right on the ball.You are the only person out of two audio sites that knew that? I found this link,if you scroll down to center weighted balance control it explains it beautifully Potentiometers (Beginners' Guide to Pots).

 

[DF96]

You must be using the wrong audio sites. As this is a DIY site, most people on here actually understand audio circuits (to varying extents). We can be weaker on which commercial gizmo to use with which commercial widget, as we tend to make our own gizmos and widgets.

 

[Calvin]

Hi,

there are specialized Balance Pots made by Alps -and probabely others too.
The specialty beeing the anti-log character just to the middle position and staying constant above (shorted).
That way both channels remain at full volume in the middle position.
Turning the pot-knob attenuates one channel only, while the other stays at full volume.
A dual anti-log pot would attenuate both channels in the middle position and on turning it'd increase one channel while lowering the other.

jauu
Calvin