So who you think these review people are? gods of audio?

I checked the site and those are bunch of people who post reviews to earn from adsense. You can see around the review tons of ads from adsense. You can't even identify what part is the review and what part is the ad if you are new to internet. hehe
Its so foolish when they are saying "The weakness in your computer audio will be the soundcard after this speaker system is installed" hehe they think this is the perfect speakers on the planet. What fools they are. That statement is enough to know about their sound review capabilities
See how childish they review speakers they say "With the subwoofer and system volume only turned up to half, EVERYTHING in the room was vibrating or shuddering in some way." hehe so if it can shake the things in your room and if you can't turn up the volume more than 25% and everything is wobbling then its the best sound and perfect speakers. What dumb lamers they are.
I think you can buy pair of 12" woofers from pitakotuwa and make something that shake your roof too. Its not quality. Man they are posting all these crap to earn from adsense. They say this is perfect spekers on the planet and put google ads about z5500 and when people click they get $$$

You people trust them and even care to post these lame reviews in Elakiri
Actually if you are interested in that way and wanna play games and decent quality sound reproduction then there is a Korean brand in pitakotuwa which is called Pyramid. Buy the korean one not the fakes okay. Get all 3 drivers high, mid, low(12") from pyramid and the cross over too. Plug it to a Japanese used transistor amp from pitakotuwa. (You can find used amps like Yamaha, Sony etc.. for cheap) they are 110v. And you will be amazed with the sound quality. Its lot more floor shaking than z5500 and even better quality than z5500.
I feel like making a pyramid and send to that Tweak News review team who did that review. They will say oh god the best speakers on the planet is custom assembled brand from srilanka.