Grounding issues and hum loops: There is often hum in system, and it is hard to fix it.
Dozens of pieces of gear all plugged into their own circuits, with different ground and safety circuit topologies is a recipe for disaster. You can spend hours troubleshooting, doing “plugfests” and even pulling your precious little hair. But the buzz stays.
Grimani Systems Solution:
We put inordinate effort into maximizing the dynamic range of our systems. Any lick of hum is considered untenable, and it keeps us up at night. The great majority of audio content today is stored on digital media. Hum is a common issue with complex analog systems, so the best thing to do is to keep audio signals in the digital domain all the way. We take the digital stream right out of the surround decoder and feed it to our digital speakers over a hum-proof Ethernet network. The speaker feeds are all purely symmetrical/differential AES-EBU signals – just like they use in professional studios – and they never touch a ground reference. If you need to run analog feeds to the speakers, that’s OK, too. We offer balanced XLR analog inputs – which are insensitive to ground loops – to make your life easier. If you like vinyl, you can plug the balanced analog output of your pre-amplifier directly into our speakers. How sweet is that?