system specifically set for use with included speakers. anyone know of a speaker to upgrade volume and quality? seems 6 ohms but if connecting other speakers vocals very faint as system produces 3 ohms per channel. very odd. no speaker i have tried works. hopefully there is a speaker guru out there somewhere. gutting to return the monitor silver 100s as sounded nice. i need help but also figure may well be a non starter. i can email specs/manual if anyone wants to take a look. cheers. gerald