sub

I know my posts have been bad but I am new to this whole thing. I am buying Klipsch synergy s-10, polk audio TSiCS10, Polk TSi300, Yamaha RX-V573 receiver. I need help finding a reasonably priced sub. This is costing $350. I want to stay under $500 total. I have $150 for a sub. I want it to...

I am buying Klipsch synergy s-10, polk audio TSiCS10, Polk TSi300, Yamaha RX-V573 receiver. I need help finding a reasonably priced sub. https://stlouis.craigslist.org/ele/5939267554.html https://stlouis.craigslist.org/ele/5990574074.html https://stlouis.craigslist.org/ele/5951179333.html...