I have an old WA-44C and I was going to use it for one of my science projects. The problem is that when I connected my speaker coil to the line frequency connectors and tried to change the frequency and such, nothing changed. I tried every knob on it and nothing change at all, the only thing that worked was the line frequency power output allowing me to only increase the volume.

I was hoping that some of you might know how i might be able to fix this.

If you are able to please help me. Thank you.