"08-30-14: Karavite
FYI, apparently Tannoy has acknowledged and addressed the problem with the hissing/buzzing issue in their Reveal monitors:
http://support.tannoy.com/entries/60922977-Reveal-502-802-My-monitor-emits-a-static-electrical-buzzing-noise-What-do-I-do-"
Out of curiosity, I went out a couple of weeks ago and bought a pair of Tannoy's. Reveal 502 is what it says on the box. If you get the hum, you're not hooking them up properly. Depending on what type of connection options you are going to use, the fix may be different. But if you have a pair of them and want to prove that nothing is wrong with them and the hum can really go away, try this: First, take a stereo 3.5mm to 3.5mm interconnect and go from the output on something like an ipod, pc, or something similar, to the 3.5mm input on one of the speakers. (You need to make sure the cable is stereo, not mono.). Take another cable exactly like it, and connect it to the monitor link input on both speakers. Just to clarify, one cable goes from a source to 1 of the speakers and the other cable goes from one speaker to the other. If you connect everything this way, you shouldn't get a hum.