You certainly aren't getting any speaker going correctly to 17 Hz even for ten times this price.

Stereo speakers are not made to go very low, that's what a subwoofer is for. Not all subwoofers even go that low!

Above $2500 for a good stereo system will get you a better sound, but as always, the more you pay, the less you'll be able to hear the difference. Also, the better the sound is, the more you'll have to be careful about amp pairing and room acoustic.