Often. My subs came with a remote that controls all the subs Optimization parameters and its six customizable presets..
Slight volume adjustment are used mostly. Possibly one or two presets which embellish some aspects of the recordings low frequency to my taste which lie below the established crossover region (100Hz - 33Hz).
I'd like to second @mijostyn clarity regarding -6dB sub-bass products. Don't you just love it when someone does the math? Nice.
"@akgwhiz Glad to see that not everyone buys into set and forget it" Me too! It's literally the most fun we have with our system. My preset for Rap KILL'S it.