Summary: OK first these speakers are great for music and gaming. When you listen to music you hear clean crisp sound with great bass (DEEP BASS)!!! And when using these for movies and games it can fill the room with sound and it sounds fantastic. These sound better for gaming and movies than they do with music (in my opinion). Only downside is the sub-woofer is a pain to position in the room in order for you to hear clean full bass.
Summary: To start, I am very happy with this speaker system in the six months that I've owned it. Im a little new to logitech speakers so i don't know how great the past speaker systems were (counting the z-2300 system). With that being said I'm not sure what to expect performance wise but i am very happy with the 623 as well as my old 313s. Appearance- Most of the logitech systems i have seen usually have a sleek design.
Summary: I have had this unit for a while now. Compact with great, clear sound from the satellites and monster bass from a small sub. Great for small areas. I have been happy with this unit but have noticed for a while a constant buzz in the background both during playback and whilst not playing. All in all has served me well though.
Summary: The speakers a very loud and have a great range of bass. I am not super serious about sound but I can tell you that it gets really loud and still sounds perfectly clear. I use these in my room on my computer to watch movies and tv shows.
Summary: I completely agree with "Jordan" the previous reviewer. We currently have the Logitech Z-2300 speaker set which we love and when we saw this newer model come out of these were more than pleased to purchase. We expected some improvements on the overall set up and the sound quality to stay just as great if not better. However, in the end we still love our older model better.
Summary: This set sounds great, but home entertainment use can be severely limited without a remote. I hooked these up to my TV and they sound great, but constantly getting up to mute or adjust the volume would be a drag if I planned to use these constantly. You also need to plan on having extra room for the subwoofer, which is a 12'' x 11'' box.