Check out the AES if you want reports of scientists and researchers. I'm sure you have many satisfied customers whose systems you wired up with Cat5. Do any of them require deep powerful bass? I don't sell my customers systems where the speaker wites are Cat5 and tell them I've taken care of them, that would be selling them snake oil. I'm not out to prove you wrong. I'm quite happy to have competitors out there selling poorly designed systems so I can point out how the customer is being screwed. Maybe you should actually listen to the systems you design. I'm sure all those elevators have great sound.