Single source to multiple amplifiers around the house
Long time lurker and posted a few times as "BillJ" back in the Aughts.
I wanted to see if anyone had an opinion on what I am going to try:
Take the left and right surround speaker outputs from my Denon receiver which will be operating in Multi-channel Stereo mode,
and distribute that signal in a parallel manner to 3 additional amplifiers (receivers) in different rooms. I was going to run something like 12/4 cable for the Denon to surround speakers, while tapping off of that connection in 3 places using speaker level to line level converters
(Metra IBLOC01 40W High To Low Adapter with Female RCA from Parts Express), and make the connection to an input on the additional receivers in other rooms.
I am figuring that if I take an 8 ohm speaker load and put it in parallel with 3 high impedance loads such as the additional receivers' line level inputs, the Denon source will not see any impedance problems. Say 8 ohms in parallel with three 10K ohm inputs presents 7.98 ohms to the receiver's output stage. I haven't seen a spec for the impedance presented by the Metra speaker-to-line level converters but I assume it has to be much higher than 8 ohms.
This way I run one set of cables that feed the surround speakers and the three additional amps, instead of distributing line level signals which would require another set of cables to be run.
Any thoughts? Many thanks.