Sub-Woofer?

Mattmiller (others feel free to chime on). The seller of the T5 says 'no power supply or other accessories included'. What accessories do I need? Is this just the Neutrik Cable (or Signalcable), or does it have a separate outboard power supply too?

Please advise. Thanks!

So I left it too late to pick up the REL  T5. I'm wondering about just getting  SVS that mattmiller recommended,or a Rel T Zero. I'm not interested in home theater; just music.

Any thoughts on relative merits of  these?

Thanks for your input!

Gasbose

Thanks Astewart! But I'm planning around a slightly lower budget; this is my first try at a sub-woofer and it's kid of experimental. But thanks for the suggestion!

Tutetblimperes, I'm sure you're right. But I'm not really looking for floor-shaking sound; just a bit more bass than I get from my Cabasse Galiote bookshelf speakers.

Appreciate your input!

Gasbose

Thanks, guys! 

Bigkidz, I actually had all the capacitors in my preamp, amp and speaker cross-overs replaced. I don't know what brand he used, but he tells me they all had upgraded capacitance.

Chazzy and Wolf, I am keeping my eyes open for  used REL on ebay. I had actually bought a T3, but it showed up badly damaged, so I returned it. There a 201E and a 150E for sale, at
https://www.ebay.com/itm/REL-Acoustics-Q201E-Subwoofer-Sub-Bass-System-Home-Theater-Made-in-UK/39199...
and
https://www.ebay.com/itm/REL-Acoustics-Subwoofer-Q150E-Sub-Woofer-Speaker/253514671915?epid=17245186...

Neither seems to be in great condition, but they say they work well. What do you guys think?

Gasbose