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Message: <blockquote data-quote="pwatts" data-source="post: 1188356" data-attributes="member: 146">Stab in the dark, especially with not knowing the full history, but to me it sounds like the turn-on of the AVR causes a thump on the sub lineout that's enough to trip the autosense and that your output level during normal operation is too low for it to engage. But if you say it rattles the room etc. it feels unlikely. Autosense often is at the input, before the volume control (not always though, depends on design). You can try raising the output gain in the AVR and reducing the gain on the sub accordingly, then repeat. You can also just to reduce variables test with a physical cable instead of the wireless gadget.</blockquote>