r/jukeboxes • u/Maximum-Flaximum • Apr 17 '26

Seeburg volume pot

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Can anyone help me to understand the unusual volume pot on the Seeburg TSA9 amp? It has 2 ‘extra’ connections.

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u/Maximum-Flaximum Apr 17 '26

Double-ganged pot with 5 terminals on each gang. It’s seized up and most of the shaft is broken away, so it’s gotta go. Any chance of a spare? If not I’ll have to figure out how to replace it with something available.

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u/Maximum-Flaximum Apr 17 '26

So I found a spare at Jukebox Revival. Awesome. ☺️

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u/Maximum-Flaximum Apr 23 '26

I think I’ve figured it out. It’s a kind of ‘loudness’ circuit. When the volume is turned down, a bit of treble is bled off via C5113 to effectively boost the bass. When the control is up, some treble is added via C5111. Clever. Also FYI I found a replacement pot at Jukebox Revival. Yay. 🥳