LYD 5s might have less bass but its a difference in philosophy compared to the KH80/8030. Both the 80 and 8030 are permitted to play much deeper than they probably should be.. they are overwhelmed with distortion in the low bass and unusable for music studio use as a result (imo). The 5s roll off early and stay cleaner. That said, they didn't have enough extension for me so I went with LYD 7s and then paired them with a sub.
The -10hz/0/+10hz settings change output. -10hz you get -5dB less output, +10hz you get 5dB more.
I'd like to see the LYD 5 checked with the +10hz setting, that levels off the low bass hump, presumably reduces distortion, and would move it up the chart even further in the preference rating w/subwoofer. The dark/bright switches are interesting too, it's a tilt EQ as opposed to the shelfing EQs common on these types of speaker.
IMD test would have been nice too. Really nice. It's a key concern for studio monitors.