I just bought the pro-ject speed box 2 and running with my MMF 2.2 TT. I have a problem I am troubleshooting. I get a noticeable hum at 33-1/3 RPM that is not present at 45 RPM with 12" LPs. When I switch back to the MMF power supply there is no hum at either speed. The hum is only present when the TT is in motion at 33-1/3, and the stylus is in the groove. When I pick the tone arm up, the hum ceases. When I play a 45 RPM record, there is dead silence in silent passages - no hum.
I have a Shure V15VXMR cartridge on the turntable running through a Kenwood Eleven II solid state receiver. Polk LSI 15 speakers. Any ideas are appreciated. I really would like to make this speed box work to avoid changing belt around.
Thanks
I have a Shure V15VXMR cartridge on the turntable running through a Kenwood Eleven II solid state receiver. Polk LSI 15 speakers. Any ideas are appreciated. I really would like to make this speed box work to avoid changing belt around.
Thanks