Thanks guys. Definitely a subwoofer adds and enhances the soundstsge. I’ll probably set it to 50-60HZ and low gain as possible.
THe subwoofer only works if it’s integrated well, and setting it as low as possible is just proof it’s not integrated well. Don’t walk on eggshells for fear of ruining your main speaker sound. Do it right. Measure, EQ and get your bass to a reasonable level, often 3db higher than your mains with a descening slope from 16Hz to 80 Hz about 1-2 db per octave.
Go for broke and don't stop until it sounds GLORIOUS. Don't settle for a small incremental improvement.