lol, you think that the logitech Z-5500 5.1 speakers are crap lol. have u ever acctually listened to them. There the best speakers you can buy for under $1500.
you want high end sound for the computer. get studio monitors. you will never get accurate sound with something that is made in a plastic enclosure. for one it have all kind of resonating problems. like the one note boom that americans love. that's not accurate sound. you need something that's dead to sound like mdf and birchwood.
you also will never get accurate sounds from a speaker that place in a square box with the speaker in the middle of it. you will get standing waves like a MF (super boom). the box needs to be rectangular with different lengths for the height, width and depth and the speaker not placed in the middle.
one reason the audio world has went to hello, is because we had a recession that started in 2001. so everybody had to cut corners to survive, even the high end guys. I won't say *cough* alpine *cough* by name. they completely sold out to the low end. they replace high end with super aggressive marketing. these days they are feeding you guys more BS than anything because it's all about the profit margin.
it wasn't like this in the 90's when everybody had a pocket full of money