So recently I have been piecing together a new AV system for my living room (17x15). What I have purchased so far is Yamaha RX-A550 and Ascend Sierra 1 with NrT upgrade. My next purchase will be a sub and then a center, not sure if I will complete the 5.1 any time soon. My budget for the sub is $500-$600, I have no experience with subs in this price range (or any price range) so all I have to go by is the posts I’ve come across on forums. A majority of sub forums mention SVS, I used Merlin and it suggested PB-2000 and PS-2000. Will either of these be too much for the Yamaha RX-A550 to handle or is there a better option. Also the SVS site recommends the Sound Path RCA Subwoofer Audio Cable, is this cable overpriced or on par with other quality cables. Pretty green with all of this but I have received excellent advice from this site. Thanks in advance for any feedback.