Dear @brownsfan @au_lait : I never heard the 1290 or other ADS speakers but my L-2030.
I agree that all those switchs makes more harm to the audio signal. Please take a look to what what I posted in this thread:
Even that my 2030 goes really down in the bass I decided to add a pair of powered subwoofers and the high pass filter at around 80hz, so de 2030 frequency range is from 80hz and up and below 80 hz is handled by my Velodyne subs.
The improvement was " day and nigth " because the IMD levels goes really down and everything in the whole frequency range just shines as never before. The 1290 crossover at 500hz when the 2030 crossover at 450hz so I'm totally sure on this specific improvement regards.
R.