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Location: Redondo Beach, CA
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The denon x4000 has a 7 channel amp with 5.1+mono zone2+mono zone3 selectable. 5.1+2+1 internal impossible.
But you are already using all 7 as 7.1 in main zone and 5 channel external amp only for the other 2 zones?
So what you really need is the zone3 preamp outputs to switch to mono. I don't think the receiver has that switch.
Try connecting a rca Y cable (double male to single female) at receiver and combine signal to one mono rca cable and then
another Y at the amp to share the signal over two channels (dual mono speakers). Otherwise try just one y cable combining signal and connect
both speakers to one amp output if only 3 channels work. You might as well connect stereo to both zones and use 4 channels of the amp
if they all work. Or repost original question in x4000 receiver thread here with the receiver, speakers and amp models included.
The 'Official' 2013 Denon "E Series" / "X Series" AVR Model Owner's Thread & FAQ
Last edited by kikkenit2; 08-24-2014 at 10:34 AM.