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