Hello
The subwoofer is 13 1/4"W X 13"H X 18"D.
It weighs in at 34 lbs. 188 watts RMS.
I mention this because there may be other people that may want to use these specs in making a choice.
I think a good sub alone with all of these ingredients makes this worth $300. Anything else out there that's available in this country that I'm aware of, including home speaker systems are generally bigger and certainly a lot heavier and costs more money.
All of these factors are at the top of my list for choosing equipment.
Right now, at this stage in the game, if I choose to keep it, I may use the powered JBL 10G2's along with the sub. You can plug the sub right into the headphone jack on the keyboard. No mixer would be needed unless I would want to hook up both the JBL's and the complete Logitech system. I don't think I would care to do that however at this time.
The Z5500 is a good value for $300, and would enhance anyone's built in speakers.
I'm sure some will find it good for their uses playing out as a 5.1. So far, I wouldn't personally use the Z5500's alone.
I am continuing to experiment, but at this time, I would say the Z5500 sattelites are no match for the JBL's.
Together all 8 speakers sound real nice in my living room, but the sattelites and sub alone seems to lack a lot of mid range which I like. And yes, I've tweaked and retweaked the Tyros mixer.
The piano sound seems to suffer the most. A good share of other voices sounds rather nice.
I would say, IMHO, someone using a lot of guitar sounds for country etc, will find this quite usable.
This is the best unbiased analysis I feel I can make at this time.
One would need to try it out for themselves to see if it would meet their requirement. I'm sure a lot of people will love it just the way it comes in the box.
Best
Scott