@realfun784
Connect Two speakers to the single channel amp connectors with identifying the + and - terminals.Connect woofer to + channel of one and - channel of other output connector Or simply on the connectors marked bridged.Reduce players settings to default.reduce gain of amp to minimum.Increase volume of player to 80% of total(e.g 35 then 26).Select bass to mid range.now start increasing the total gain until the sound matches the sound output of front speakers.Afterwards change player setting if required.
NOTE:-Properly tape and install all wires.Loose wires can lead to serious electrical damage due to shortening.