@kurt soderquist As promised I am now listening on my Event 20/20's driven by my TEAC A-X 5030 amp the tonal balance is fine, bass is nice a clear without dominating., drums have a pleasant presence again with the kick just poking through when it needs to, guitar nice and clear. I suspect you would be wasting you money on a sub.
How do you have your 20/20's mounted?
Mine are on stands that have what they call Axminister spikes sticking through the carpet, then I have cheep brass Isolation Cones which support the monitors themselves. Meaning the Monitors are pretty much isolated from the room, they are two feet from the rear wall a foot in from the side walls which have sound treatment there is also bass traps behind them as well.