Stringmaster Tone cap Replacement

Gary Meixner · From: New York, USA

Hey All,

I have 1956 Stringmaster, the tone control operates, but only has a minor effect on the tone. When turned down it acts more like a volume control. I am guessing the tone cap is the culprit and needs to be replaced. Does that make sense or should I consider replacing the pot as well? Any thoughts on what value and type of tone cap to use.

Best regards.
G. Elwyn

John Limbach · From: Billings, Montana, USA

Here's the wiring diagram for the 1957 two neck. Original cap value was .05 mfd. Modern equivalent is .047 mfd. If the original paper/wax capacitor is still in there, then it should be replaced on general principles. A paper cap that old is almost certainly leaky and is functioning as a resistor rather than a capacitor. Any type other than a ceramic disc, mica or electrolytic is OK. Audiophiles will argue for days about the tonal response of various capacitor types. My take is that you may be able to measure a minute difference with some sophisticated and sensitive lab equipment but you and I (especially me after flying as a crew member on noisy military transports for the past 55 years) will never hear it.

There are quite a few YouTube videos on the subject but you can just throw a Sprague Orange Drop in it and be happy for years.

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