Marantz Surround SR7500 Receiver (don't know if anyone has this model)
Our receiver, on it's own, has changed over from surround sound to 2-channel stereo the last time we turned on our TV. This has happened randomly over the past few months, and I've been able to solve it by pressing random buttons. We have two stereo speakers, a subwoofer, a center channel speaker and two surround speakers, all set on A. We've never had a problem switching over to FM (goes to stereo setting automatically), but sometimes we lose the center channel and subwoofer on the trip back to TV mode. The panel is confusing, and I don't have a manual. I'm not even sure what the question should be --- how do I reprogram my receiver for surround? Why is my center channel pooping out? What happened to my subwoofer and why are my settings changing themselves?
I'm HUGELY frustrated. Ready to toss into the river. Any help is good help- thanks so much.
Strange dramas you are having there. I would suggest first, that you switch the unit off overnight(unplug at the wall) to allow for a fulll hard reset. Then fire it up in the morning again, and see if it behaves itself. I found a user manual for you online here
It is a good amp that you have, and hopefully resetting it will sort it out for you. If not, please do get back to me here and we shall look deeper..
Thanks for using FixYa, a FixYa rating would be great for looking into this for you. Happy to help further :)
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First off you will need to do a little bit of trouble shooting. Is the source (dvd, Blu-ray, cable box, etc...) plugged into the receiver with the standard red and white RCA cord or by an optical (toslink-fiber optic) or digital RCA (orange color code). If you are connected with a standard RCA cord then that it your problem and you need buy digital cord that both the source device and the receiver can accept (toslink - http://www.we-supply.com/browse.cfm/optical:-audio/2,779.html or Digital RCA). If the connection is now correct then you need to make your receiver do a "test-tone" to insure that a signal can be sent to every speaker (this is an internal test that just checks the speaker connections). If the tone tone operates correctly then you know the amplifier is functioning. If both of the mentioned things are now done and still not surround output then you need to check the internal menus on your source device and make sure that it does not require you to manual change a setting in the audio menu to make it work (i.e. change from 2-ch 44KHz to 5.1 or 7.1 or Dolby Digital or AC3 or some other surround sound protocol.) Austin www.we-supply.com
There was a time when I had two bridged-mono Carver Cube atmps (at a real 400 watts) pushing one 901 each but that was big time overkill.
I now use a Carver AV-406 (functionally the same as your MM7055) with the 901 EQ in between the AV Receiver's front pre-outs and two 110-watt channels. Other channels on the AV-406 pull subwoofer and surround back duties. My AVR directly powers only the center and surround speakers.
The dvd player is responsible for reading the surround sound track, and sending it to the receiver. First make sure you are playing the surround sound track on the dvd, many have a stereo track too. Next, try another dvd and see if you can play surround sound on that one. If you can't play surround on ANY dvd I would start looking at the audio connection from dvd to receiver. Are you using an optical cable? Red, white, and yellow RCA cables? Optical will transmit any sound over only one cable, RCA cables need one cable for each channel (LF, C, RF, LR, RR, sub.) If your connections are correct, is the receiver set to play a surround sound track? Is it set in 2 channel mode?
If you are referring to the rear speakers, it is normal. The rear speakers are not supposed to get a signal as loud as the fronts or center.
A surround sound system was originally developed for playing movies and the rear channels are for effects. In most surround modes the center channel will always be the loudest with the widest range of audio signals.
I have been repairing these type of systems since they have been on the market, so I know a lot about them.
This Kenwood you have is like most surround systems and does not have a feature that you would obviously like to have, 5 channel stereo. Only a few surround systems have this feature and they cost much more than the Kenwood systems. Denon and Marantz both make one with that feature. In 5 channel stereo you get a full signal to all the speakers. All the other surround modes you get a much lower signal to the rear speakers.
So in closing, you do not need it fixed, there is nothing wrong with it. You have a common complaint that many people have who buy a surround sound system but are not fully understanding of just what a surround systems is supposed to be capable of
. This is something that the salesman who sold it to you should have explained to you, that way you could have purchased a system that would have better suited your needs.
I would be happy to give you more help if you would like, just let me know. As I already stated, I have many years of experience with surround sounds systems, in fact I own the exact Kenwood model that you have and I like it very much. It is about the best you can get for that price.
I can see by the setup of this device, it can be confusing. So let's make sure you are setting the device to the correct "A" speaker outputs. These would all be on the rear panel, on the right side of the receiver. Is this correctly setup?