Qs reg UcD180 or 400 to Bruno or Jan

[Calvin]

Hi,

these digi-amps seem to be very nice devices, but I´m not sure if they meet my demands.
I want to power a two-way system consisting of an array of 8 17cm drivers connected in 16Ohm or 2Ohm. Mid-highs will be supplied by an ESL-panel (see impedance diagram). The amp will see a capacitive load of app 1nF through 1:68 transformer, so ~4,7µF. Impedance max is 70Ohms at 380Hz, minimum at 20kHz with 0,7Ohm (-40° phase shift)
Phase shift is greater than -60° over a range of 800Hz-17kHz!! reaching a max. of ~84° around 3-4kHz. Crossover will be around 250-300Hz 2nd order HP, 4th order LP.

Qs:

1) can the UcDs (especially the 180 and the ESL) handle the loads?
B&O for example states just 470nF as pure capacitive load for theyre Ice-Amps and those modules take the feedback from the speaker-output just like UcD. Test with HiFiAkademie´s amps (250W@4Ohm, feedback before filter) were successful

2) if not, could they handle it with a different output filter? Or which changes would be necessary?

3) 10A maximum current gives 200W at 2 Ohms for the UcD180. Stereophile have measured 300W on the ChannelIsland!!?? 300W@2Ohms maximum power would be sufficient to drive my basses

4) can two or three modules share one powersupply? Or have some precautions to be taken? Or does every module need its own ps?

thanks ahead
Calvin