I have owned many subs in my lifetime, and at your price point, I recommend the RSL 10S MK II. I own the 12S, and it replaced a pair of high quality subs (I will not mention the name here, as I do not want to offend anyone or any brand). My best, MrD.
Subwoofer Suggestions
About 5 years ago, I put together a system for my college-bound son. Started with gifting him my restored Pioneer SX-950 (85wpc) receiver, then purchased B&W 607 bookshelfs and a Rega 1 turntable. Nice little system.
He's been in between job assignments recently, so all his gear is now set up in my listening room. The 607s sound great, but i think they could use the help of a sub. In all my years with this hobby i have never used one....so i need some suggestions, especially where/if they are compatible with a vintage receiver, what wattage is appropriate, etc. Any specific brand/model suggestions will be appreciated. Max budget is $600.
Thanks!