I have just bought (together with some old records) a Thorens TD 145 MkII turntable with an Ortofon MC 20 element. After connecting it to my amplifier, it truns out that this turntable gives only very little sound and I have to turn the volume of my amplifier fully open to be able to hear something. This does not seem to be correct. Am I doing something wrong or is the turntable broken?

Thanks,

Johan