Was initially a bit worried that I bought too small a sub but I am very satisfied. Actually so happy that I bought another one! Actually believe that it has become overkill if I bought RELS size larger. So now I have two subs to my bookshelf speaker. They play perfectly with the speakers. Troubled stylish in white high gloss! Can not give more than full pot.
Linked for the first time a sub to bookshelf speaker (KEF LS50) in 2-channel set. Run with high-level and Neutrik directly to Valve Amplifier. Even added a Auralex babyGramma isolation plate under sub. Gave that little extra I was looking for. Are satisfied.