Hi, simple question.

The 20 mm speaker appears to have a total of 4 pads where a wire would be soldered down. This is my first 20 mm speaker, and I can't seem to find any info regarding whether only a total of 2 or 4 wires are needed. I figure if there are a total of 4 then each side would then be wired in parallel, then soldered down to the circuit board. Any information is appreciated, thanks.