Manuals and user guide free PDF downloads for Onkyo HT-R540. ONKYO Service Manuals, User Manuals and Instruction Manuals. This page is designed. HT-R540 ( HTR540 ) Service Manual ONKYO HT-R550 ( HTR550 ). Onkyo s Remote App supports wireless audio and remote control functionality. Onkyo s Remote App allows owners to integrate wireless audio stored on an. Find great deals for Onkyo HT R540 7. Watt Receiver. Shop with. This was a good deal but I bought it to use 2 zones. Explore Buying Guides. Just purchased the Onkyo HT-R540 HTiB (all-in-one systems). please read through your manual thoroughly, twice. most people get stuff, don t. getting a roll of 14/2 gauge wire and use that to feed your speakers. they are.