The sub has an amp in it with rca conn. It has 2 ins and one for the sub it has a phase dial and a gain dial plus a dial for b

Jun 23, 2018
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4k samsung 55in smart tv with a pioneer receiver vsxlx302 ,7.2 ch .s.sound speakers by audio line ah2004. Digital 2 way speakers. The sub has 5 rca's. A phase angle dial 0 to 180 plus a bass dial from 30 hz to 250 hz and a gain dial. All the speakers have wire conn. which goes back to the receiver
 
Solution
Connect the sub out of the receiver to the sub in on the woofer. No other connections required.
Set the phase at 0.
Turn the crossover to 250hz.
Turn the gain to half way.
You will adjust these things in the receiver now.