My center speaker is the only one working and the others are being bypassed somehow. i can hear backround noise but i only hear talking from the center speaker. when i start the movie the system says bypass and when i try using digital prologic i get nothing.
I would get a copy of the manual first. Check the speaker settings in the menu or front panel to deterimune if the "A" channel for the front are turned on. Center speaker will work under Pro logic settings(all). A stero source is required for at least Pro Logic processing. I looked unit up on e-coustics and found some speaker set-up problems related to input level.
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The Center and the subwoofer are on the same cable so most likely it's unplugged or damaged. Replace the audio cable of the two with one of the other 4 speakers' and text again for any sound. If it works then all you need to do is replace that cable.
1) Check cables for dust, or bad connectivity. Clean aprop.
2) Clean carefully the volume control inside, with spray for computer use.(carefully inside the conectors)
3) Finally and sadly, have to change the speakers, may be is something damage inside the board of speakers, or fried. :o(
This is a 5.1 (6 Channel Technology) You should hear only the voice thro the center speaker. If the source you are playing is stereo, however the software splits the source its difficult to seprate the voice track, if the source is a DTS 5.1, then you should hear the voice only thro the center speaker. eg: when you play a DVD movie which is DTS 5.1 then you should hear only the voice track in the center speaker, if the dvd movie is just stereo then you will not hear any audio in the center speaker, while the other four speakers get output, this is the special effect in 5.1 ( 6 channel Output).
If you had the Speakers Set to A (not B) and no headphones connected when you pressed the TEST TONE button on the Onkyo HT-R540 (also known as the HTS-790) remote, and you had no sound from the Center Speaker then try the following steps.
1) Check the Center Speaker wiring at both ends under a bright light and make sure that there is not a strand of wire touching the Receiver Chassis or another speaker post. Check both + and - .
If that looks okay,
2) unscrew the Center Speaker Post connections on the Receiver and verify that the bare stripped wire is making contact. Often, the insulation is too far into the connector. When screwed down, the wire's insulation is crushed and keeps the bare wire from making contact.
If this looks okay and the unit is under Warranty, your last test is to:
3) temporarily swap the wires from the Center Speaker with the Right Front Speaker. Turn the volume down low and try the TEST TONE button again.
If you now hear sound from the Center Speaker box itself and none from the Right Speaker box, then the Receiver is the problem.
If you still do not hear sound from the Center Speaker box, then the Center speaker itself is defective.