Quote:
Originally Posted by W9TR
Buck - not all McIntosh amps have the same output configuration. Your 402 like my 602 has fully floating transformer outputs that aren’t referenced to chassis ground anywhere.
So the REL speaker level hookup just doesn’t work in this case. It’s a REL design defect.
REL needs to use balanced differential inputs for their speaker level connections which would solve the problem completely and simplify user hookup. Other sub manufacturers do exactly this.
You’ve found a pretty high class way around the problem! 
Tom |
I would argue against a design fault. The fault is not including comprehensive grounding instructions in their manual. I'm confident a REL sub can operate correctly with a Mac. 402 using an alternate ground connection.