I can't see in the photos - combo sets like these vary. usually the amp for all three drivers are on the plate amp mounted on the sub, but the wiring can be different - cables running from volume control to amp to speakers, cables running from amp to volume control to speakers, connectors typically 3.5mm, but in the photos there's an unexplained pair of RCA outputs that might be for sending the amplifier's 2.0 output to the satellites. Unconventional, but if it simplifies things as far as Logitech is concerned, it's not impossible they'd do it that way.
It really depends on acoustic issues. Sometimes the desk might interfere and pull the image down, sometimes it doesn't.