Hi there, I’m a 57 year old professor (architecture) and have been somewhat of an ‘audiophile’ since I was a teenager- I shoveled snow and mowed lawns in order to buy a Rotel receiver, Dual turntable and set of New Advent speakers, c. 1978 (I still have them, reformed twice, new caps etc in crossover, and they still sound great). They’re now in my second stereo system, powered by an NAD 7600 integrated amp. My primary system consists of a Marantz pre-processor, second-gen Beolad 8000 speakers, B&O Beolad 3s for surrounds, a gorgeous B&O 8500 linear-tracking TT with a Soundsmith cartridge, Marantz Blu-ray, Music Hall Maverick SACD player, and a 1000watt SVS subwoofer. Covid-boredom has me getting back into my old hifi hobby. What brought me here was a google search for how to upgrade a pair of Beovox cx100 speakers that I re-foamed about 10 years ago and replaced some of the crossover components. I have a third system, NAD 3020 circa 1982 integrated amp and a pair of beolab 4000 desktop speakers. I’m very disappointed in their sound quality- I actually hope there’s something wrong with them, otherwise, they live up to the image of B&O as all about aesthetics and not sound quality. Sadly, I’m afraid my high frequency hearing is starting to deteriorate!