Construction actually went without problems, the rear (almost wireless) LS connect without complications or connection losses with the rest of the system and provide a good backdrop effect. In general, the bass is sufficient, but also not the best.
Film music is well reproduced and also ordinary MP3 or reference CD's are well played.
Unfortunately, these and probably other systems has a disadvantage.
The languages sound too middle-heavy. Clean, clear and bumpered heights dialogues are given far too middle-heavy and without wealth again. All preset programs are almost useless and also the program "Language" the fox not fat even if it is with the 3D Surround button the best at this facility.
I have previously (Z4 and 2 other studio monitors Logitech) with a distributor on the headphones output operated a stereo. The bass of the Z4 is terrific and the dialogues are played cleanly.
Unfortunately, it was not possible for me to connect these speakers to the system, otherwise this would have been an option to keep this 5.1 system. Now I have to give me the stress, and to package them as neatly as somehow possible. Finally, it's always the stupidest am Please return ..
All in all only average