Weird surround sound speaker behavior with Denon 2105 7.1
Hi, I have the above mentioned amp, and I'm experiencing a couple of
strange problems. I have a 5 speaker arrangement, and when I set the
unit for 5/7 channel stereo, the right rear speaker works, but the left
front does not. When I set it to "virtual", the left front speaker
works, but not the right rear. Right front and center work in both
modes (left rear does not work because of a severed cable - not part of
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Re: Weird surround sound speaker behavior with Denon 2105...
It may sound silly, but can you check all your speaker cables again and confirm whether they are connected to the right connections. please check all cables as also the severed one and please repair it also.
Now please go to the system-set-up and do an auto setup and set up your speakers. Listen to the test tones and confirm that they are coming out of the correct speaker.
Once these are set, then if still there is mismatch of sounds, then we could further trouble shoot.
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Usually don't need one
12v DC to posative (red)
12v Ground to Chassis or body of Amp
Possibly an Ignition Key 12v to hold memory settings
2 Speaker Unit will have 4 wires - 2 to each speaker
one wire of each pair will have a stripe (say negative)
keep striped wire to same speaker terminals to keep the speakers in phase with each other (speaker cones travel in same direction or you get distortion)
4 Speaker Unit - same as above but either Front Pair or Rear Pair.
Get the Amp on a bench & test the unit with a couple of cheap temporary speakers.
Without knowing which receiver etc you have... make sure your "mode" is set to 5 channel, Dolby Pro or similar. And even then, make sure your source is 5 channel. What are you using for an input cable? It needs to be able to provide 5 channel. Standard RCA stereo type cords do not. You need either optical, "coax" or hdmi. Lastly do you actually have a 5 channel program? Many older movies, and standard cable boxes only output stereo, not 5 channel.
There is no crossover arrangement. On the PMP5000 they have a tunable filter INTENDED to do low pass for a subwoofer. When selecting this mode for a subwoofer The frequency of the low pass filter can be set between 30 and 200 Hz. This feature is NOT available on the PMP3000.
There is nothing related to a crossover in these amps other than what is mentioned above.
The MONO out is merely an analog summation of both the L and R channels.
All sound is generated digitally and the pedal doesn't modify the sound, it just sustains the generator. This is a strange problem and best suggestion iis to find another unit and compare... it may be a characteristic of the design. There isn't anything that you can do to change this. It could be there is a bad ground inside the unit or the digital data is corrupt in the processor. The fact that it is on a particular set of notes is strange...I just checked on my Yamaha piano that is essentially the same electronics and I notice that on one octave above the middle when one strikes F# and G they "ring out". Now this MIGHT be due to the characteristics of the speakers. Those particular notes seem to clash more. I don't have other speakers on mine and unfortunately you did not mention what brand model you have attached. Consumer grade speakers like fancy stereo speakers do NOT do well on these instruments. One has touse pro grade speakers AND use proper interconnecting cables. The speakers, powered type, must be powered from the SAME receptacle as the piano to avoid ground loops.
Protect mode will kick in whenever a fault is detected.
You get the unit not powering up, and sometimes you hear a clicking
noise, that is the protection switch that keeps shutting down the unit.
Causes that can start protect mode are:
Electrostatic harges on internal circuits.
Leave the unit unplugged for power for one hour or so, this will allow discharge.
Bad speaker wiring.
Check speaker wiring, try unplugging and plugging back, or start after removing one speaker at the time.
fault is the natural cause for protect mode. If all the above did not
work, then the problem is a blown component or an internal fault. In
this case the unit must be taken apart , tested and repaired by an
If the unit is less than one year old, or if you
want to get service, call Sony at the phone number listed on the
The Pioneer VSX-D814 has a couple of Power Hybrid bricks that do all the power amplification. These are the infamous PAC011A. You should have 2 of those in your receiver. If the amp detects some unusual activities, it may shut down the unit to prevent damage. “Amp Err” usually means some DC in the output. Disconnect all the speakers and turn on the unit; if it acts normal, reconnect speakers one set at a time very carefully. If the unit still shows the error message you can try to reset it. If the reset works, again carefully reconnect the speakers connections. If the reset does not recover the normal operation of the unit, you may have one of the PAC011A damaged, and the unit will need repair. The reset can be done by disconnecting the unit power cord for a few minutes, then plug it in and press “FRONT ENTER key + ADVANCED SURROUND key” continuously for 2sec. Good luck
I do apologize for the problems you are having with your audio unit. The protect mode indicator will appear when the unit detects abnormal resistance in your speaker setup. I recommend removing any additional speaker wire that may be added to the unit to extend the factory speaker lengths. Also, make sure you have all the factory speakers attached, and all non-factory speakers removed. Finally, please unplug you unit from he wall for 1 hour after checking all of the above suggestions to completely reset your unit.
If you are still having issues after doing all of the steps mentioned above, the unit may need to be evaluated by a Sharp Authorized repair center.
You need to provide me the specs of your amp, your speakers. Impedance important. You are experiencing overload, overheating caused by overload. You have a wider frequency range using a mixer and that affects the output stage of your amp and can cause to fail.
I am from Yamaha service before and they have speakers that has 4-6Ohms impedance only. And you have to know your amp if capable of handling such low impedance. you may not have problem with the power but it should be impedance.