the L/R surround speakers are mute on all play modes execpt for white noise calibration mode. even in speaker calibration mode the reciever doen not pick them up and auto sets them as 'none' when they are as loud as hell.
i guess there fuse or reset option for the surround perhpas?
also have no switching htmi- but i suspect that culd be due to the TV which is HP
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If they are the rear surround speakers, they will not produce sound at all times, check this with a surround sound movie that will engage the speakers. Check the settings on the reciever to be sure you are in the correct surround sound mode, and check the movie menu to be sure you are playing in correct format. Also check that wires are correctly installed, observing polarity, under terminals at both the speakers and at the reciever. I hope this is useful, but not being onsite these are just a few troubleshooting tips to narrow the problem.
check your speaker wiring, make sure both terminals are connected properly. or could just be left speaker is disconnected. and is set in stereo mode which will only play left and right front and Sub, if you have one. try chaning the surround mode to play in multi channel speaker which will send sound to all speakers. i trust your using a Digital audio cable from your source ( cable box, DVD player) if your using analog audio cable you will only get stereo sound, and nothing will ever come out of the rear speaker unless you change the surround mode to multi- channel speaker. also in the setup menu you should be able to perform a speaker setup, make sure all your speakers are able to produce sound. follow speaker setup mode in menu, make sure you have checked the boxes or Yes to speaker you have in your system. then perform calibration and a test tone will come out of each speaker as you select them.
I am having the exact same problem with my Harmon kardon PC speakers. It is related directly to the speakers (subwoofer). If you plug head phones into the headphone jack on the satellite speaker you will not hear the noise. I am still searching for a solution, I love these speakers!
Did it ever work properly? If not, let's get down to basics and set it up for the simplest configuration it can have: FM source in stereo with front left and right speakers, no Surround Mode, no DSP, no Tape Monitor, no Mute, Volume not turned all the way down. Does that work?
Do you have Surround Speakers defined in System Setup A? If not, only Dolby Surround or Off are valid Surround Modes.
Is T2 Monitor indicator lit? Press the Tape-2 Monitor.
Is there acceptable sound other than during Speaker testing? NO? Is MUTE On?
I had this problem too. Finally, after using the MCACC setup and making sure all the speakers worked, I found I had to set the source to FM, TV or whatever from the remote control and set the mode to advanced surround sound using the front panal button on the upper right. Had to fool with them a lot. Good luck.
I don't know the design of this reciever, and do not have any schematics or engineering information to know the design.
This is a general comment:
In many of these recievers at this level they don't have very good muting designed in to their system. When switching sources, the audio is not being muted.
This is a theory of why the noise is not on the main speakers, but present on the sub woofer. Because the switching noise is of very low frequency, this is why the sub woofer is making noise. The main speakers lack the low frequency sensitivity that the sub woofer has. This is one way of looking at it. It is also possible that there is muting for the main speakers, and none for the sub woofer.
If the reciever does have muting in to its design that is supposed to mute when switching modes, then there is an obvious defect. When a source is switched, or a mode is changed, the output would mute for the duration of the switching interval. This is usually for a period of about 100 ms.
Your best bet is to contact the service rep for nakamichi and ask the question there.
I have serviced many recievers made by other manufactures. The higher end models all had muting in their design. This way, the output was muted when the source was changed, and when the reciever was turned off or on.