Sentence:  Inside a belt-driven <WSD>turntable</WSD> is a small motor with a rubber band linking it to the underside of the "deckplatter" (the part you put the record on). ... Direct-driven <WSD>turntables</WSD> are a better option than belt-driven ones. ... [I]n direct-driven <WSD>turntables</WSD> the centre spindle "is" the motor (so it "drives" the motor "directly"). 
Meaning of the word marked with <WSD> tags:  The circular rotating platform of a record player or a disk jockey's console on which the record rests during play; , a record player.