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Yamaha RX-A700 loss of pre-out output

There has been a sudden loss of output to the main/front speakers which are driven by an external amp the signal of which comes from the Pre-Out. The external amp is fine, and the receiver is otherwise OK. If have the receiver set itself up automatically using the microphone, it has to increase the output to the main/front speakers by the max (10db) and decrease the surround and center speakers by the max (10 db) but then the mains are bass-heavy and muddy and still the output is low. Previously everything worked fine and all speakers balanced out to within 2 db of each other. I cannot correct this with any of the settings. Is this a setup issue or does this represent a component failure?

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6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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SOURCE: Loud distortion on Front Channels

Well, the nice thing about the newer amps is that the actual amp circuitry is all contained in a module and you don't have to do much troubleshooting. Just replace the module for that pair of channels. Bad news of course is the modules can be pricey. Should say right on it the part number, order it from mcminone.com or whoever, solder it in, use new conductive grease (many times I think these modules fail because the grease gets old, the module overheats and toasts) and you should be fixya'd

Posted on Jan 12, 2008

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SOURCE: Technics SH-AC300 Connection to Power Amp & Pre-Amp

Hi!
The problem is, that your SH-AC300 needs an amp with 5.1 input (but no decoder). For this purpose technics delivered SA-AX710.
So if you'd like to use your current equipment it would be impossible.
The only option is for you to buy 2 more Power Amps (SE-A900S), so that each of 3 amps would take care for one part of music. (one for FL, FR; one for RL, RR; and one for sub and center).
Another option is for you to buy SA-AX710. Then all the problems would be solved with it.

Posted on Feb 24, 2008

  • 92 Answers

SOURCE: no output to subwoofer per-amp

you may have to go into the onscreen menu and enable it,that shuld work

Posted on May 20, 2009

  • 1 Answer

SOURCE: Speaker output

Yes, there are relay type switches associated with those outputs. Your RX-V1 is not dying.
Just plug a pin plug in and out of the dead channel to bump the switch. You will hear the speaker
come on. If it doesn't come on,do the plug jack in an out of the pre out again. It will come on.
You can use the test tone to check all channels and rebalance volume levels. You are making the
pre out connect to its power amp. It seems the problem got better when activating those switches. Most likely a cleaning issue. You can also jump the mains and center, and there is also
a modification to jump all channels. I bought my RX-V1 very cheap because of this and love it.
Of course outboard power amp would solve all, but getting this reciever to connect to it's own
power amp has been thrilling as far as bang for the buck. I do use the front effects also, and like
them. It may seem like a pain, but it is worth it to get those channels going.

Posted on May 31, 2009

mlapres
  • 757 Answers

SOURCE: Pioneer audio receiver pre-amp output

It is possible then that the root cause may not be electrical, but acoustic if you're noticing the issue from your listening position.
If you can run a channel test signal identically one channel at a time by positioning your meter less than a foot away and exactly the same distance with each speaker and the level differs by more than 1/2dB, then it's not the acoustics.


Posted on Dec 24, 2009

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I want to run from my rxv2600 to a eq to an external amp to a pair speakers? yamaha online said run out of L/Rfront preamp to eq but i get no sound? Help plz am i missing something?


Must be connected to an audio OUTPUT.
There are probably preamp inputs and outputs.
Sounds a little strange, but signal (sound) must travel OUT of the Yamaha, IN to the EQ to be processed, OUT of the EQ, IN to the external amp to make it big enough to drive speakers, and OUT of the amp to the speakers.

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NAD C320. Only one channel sounds. Problem with the volume control?


Did you try to switch the loudspeakers? Before changing anything always lover the volume and switch off the amplifier.
Assuming you tested already different inputs, you can be sure no cable from signal source is out or defect. (or did you nit check that first?).
When the amp is switched off, disconnect the speakers and switch left to right and right to the left output.. If the other speaker is quiet now, you are sure it is in the amp. Still his can be anything.
You can check the connections between the pre and main amplifier on the back side. When you have an extra set of interlink cables, perhaps you can cross the in and output there too. Take care every time you change something, lower the voltage and switch off the amplifier. Sudden clicks when switching on or changing anything can damage the amp and or the speakers.

Perhaps when you checked this you can locate where the problem is? Speaker, speaker cable, power amp, pre amp, (only a part of the pre amp.

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How can I connect Senheiser wireless headphone to Yamaha RX773 without using front headphone jack as this mutes speakers, I have hearing problems, my wife doesn't, I tried both av audio outs in the back...


Your receiver has Zone-2 functionality. For Zone-2, it has both speaker (powered) output and pre-out line outputs. According to Yamaha FAQ, these pre-out outputs are independent on the main volume settings. So if your wireless headphones have their own volume settings, you can change the volume independent on speakers volume.

If you want same volume for speakers and headpohones, use the PRE-OUT FRONT outputs on the back. If you want different volumes (and listen to headphones even with speakers muted), use ZONE-2 OUT outputs on the back.

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Hi Jay, Check the cables connecting the speakers. The head phones are usually driven by the pre-amp and as such won't be affected by a problem with the main amplifier. If the cable continuity is good you have a problem with the output of the amplifier. This can happen if the amp has been over loaded or with a sudden surge of power. The usual problem is with the output power transistors. Regards John

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I have a Denon PMA 500V amplifier. all of the output fuses were blown so I replaced them but the unit still doesn't work. Any suggestions?


hi.
Did you checked balanced impedance?load speaker impedance vs PA output?or PA might over driven,causing a trouble on the pre-amp to power amp circuits and components damage,
need to recheck related components on the pre-driver up to main output section,

Note: That,blowing of fuses with the same rating is an indication of trouble/shorted in a circuits that driven on it,

Thanks and good luck

microhit

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If you get a second amp for the 901's you can have your cake and eat it in front of the TV too.

http://www.retrevo.com/support/Yamaha-RX-V850-Receivers-manual/id/320bh027/t/2/

Two solutions:

ONE: dedicated 901-RX-V850 stereo-analog-audio only:

If you want to have the Yamaha also support non-901's as the second set of Front Speakers, put the Active Eq in one of the three selectable Tape Loops. That way you can dial the 901 EQ out of the equation and select the 'normal' speakers for your Dolby Surround video experience.

Now imagine this:

TWO: 901's for the Front on a 100wpc stereo amp, your RX-V850 or a nice digital AVR driving center and rear, maybe 'normal' fronts, too

Get a nice 100wpc amp with its own volume control on eBay and slave it off the Yam. Remove the Front Pre-Main jumpers and place RCA Y-splitters in there so the pre-main connection out is maintained but shared with the Active EQ, which is in series with the 901's dedicated amp. Use the new amp's volume to match the 901's to everything else and you just have to turn it on or off to enjoy the 901's along with or instead of the 'normal' front speakers. You could even just disable them at the Yam.

Now for some boilerplate I created to get your creative juices flowing ij case you have a digital AVR in mind for the future:

Having a 901-based multichannel setup myself, I would highly recommend getting the Full Monte for video listening (below)...

In that case a separate stereo amp for the 901's would work. I run a Carver AV-406 (5-channel amp) for my 901's in Front, 2 Subwoofers and the Rear Surround channel, with the Active EQ between the receiver Front L&R Outputs and the 901's amp channels. My receiver controls everything and just drives the Center and Surround speakers.

You could get by with just a stereo amp for the 901's. A Carver M-200 is a good efficient amplifier that would have you cooking just fine (2x100W). Run it with the Active EQ between the receiver Front L&R Pre-Outputs ** and the 901's amp channels.

** Front Pre Out (or one of your analog Tape Outs) >>> Bose EQ Amplifer IN, then
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1 Answer

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