A:Answer If this is an older turntable, you will probably need a phono pre-amp which you would need to have anyway to connect the turntable to one of today's receivers. In the "old" days, receivers had a phono input which had this pre-amp built into it. Cassette decks and CD players do not need these additional pre-amps. I am using one of these devices to get my 1980's Sony turntable to work with a newer receiver I bought a few years ago. The pre-amp is not that expensive and can be found on the radio shack website, and probably on Best Buy's as well. Once you have the pre-amp, it ought enable the turntable to work with the Knomo speakers since the Knomo speakers have an internal amplifier.
Good Luck!