10-17-2023, 09:39 PM
Hello all,
My 46-1213 has a Center tap volume control. It is 2 Meg with the Center tap at 1 Meg. The Center tap goes to the 500K bass control. The bass control is OK ohming it out. The volume control is 0 ohms at minimum, 300k half way, the drops to 30k at 3/4, then up to 900k at full volume.
The problem is as I turn it about half way down the volume control itself squeals, I can't hear it through the speaker, and the stations (FM, AM, and SW) fade out. Turn it down further, and it motorboats through the speaker and the squealing stops. It motor boats at minimum volume.
This is the first Center tap volume control I have worked on. Is this thing acting correctly ohms wise? The radio has other issues with FM hum and low volume, I don't know if that is causing the issues with the volume control.
Thanks.
My 46-1213 has a Center tap volume control. It is 2 Meg with the Center tap at 1 Meg. The Center tap goes to the 500K bass control. The bass control is OK ohming it out. The volume control is 0 ohms at minimum, 300k half way, the drops to 30k at 3/4, then up to 900k at full volume.
The problem is as I turn it about half way down the volume control itself squeals, I can't hear it through the speaker, and the stations (FM, AM, and SW) fade out. Turn it down further, and it motorboats through the speaker and the squealing stops. It motor boats at minimum volume.
This is the first Center tap volume control I have worked on. Is this thing acting correctly ohms wise? The radio has other issues with FM hum and low volume, I don't know if that is causing the issues with the volume control.
Thanks.
