So after a struggle, several months of complaining to friends here and online, I think I've sorted out my KEF 105.4 speaker issues. All it took was new Falcon caps and 2 NOS tweeters and I finally understand what I was missing..they sound good now but not awesome because, imo--> the bass is lacking to nonexistent. I get it, the .4 model has two smaller speakers, where the 105.2 only had one larger one and the 107s are more bassful from the git but now that I'm here, with approx $900 into the 105.4s and stubborn..WTD? I'm looking at subwoofers to fill the hole.. have thought about adding other speakers. I saw a guy on the webs, if you can believe it, with a picture too, where he was running 105.4 up front with the 104.2 in back.. probably a sub in there somewhere but..I don't recall. I'm about to say eff it, use the KEFs for jazz.. easy play stuff and get some 70-80s kick out the jams speakers (JBL L, Klipsch Cornwallish, Kappa 8..) for everything else. other-Question- could it be my amp that just doesn't do it for the KEFs? System- PC/ turntable, ModiM, Freya pre, Bose 1800 Series VI (a white labeled carver PM1400- 350wpc into 8ohms).