Dayton Audio B652. Set up with stands or whatever you have available such that the tweeters are level with your ears and pointed inward such that the tweeters converge just behind your head in an equilateral triangle. Tweak from there to your tastes.
Dayton Audio SUB-1200
Craigslist or thrift store surround sound receiver (Denons have been reliable for me, but I've been told that Yamahas are also great). You can pick these up for peanuts and they can be set up as stereo only. They all have proper bass management & subwoofer DSP. Generally speaking, screw-type speaker terminals are a sign of better quality vs springs. If you can't test it before taking it home, pass on it and keep looking.