Onkyo TX-8211 receiver with very low volume through speakers

The manual for the tx-8211 says that the total impedance for when you have both A and B speakers on are 8 ohms before it goes into protection mode. So look on the back of the speakers and read the impedance and add them up for that side of the speakers. You can wire them in series and it should fix them. I know this is a tad bit late by yknow two years but I’m bored and have nothing else to do.

bad soldering joints inside the receiver or faulty speaker relay.

Check all of your speaker wires and speaker turminals. I bet there is a short.

make sure that somehow the wires didn't get loose from the speakers in the back. Protect means that it's overloaded. Did you change the plus wires with minus wires maybe. Check to make sure all the wires are good.

Your tuner will be the limiting factor regarding sound. The Onkyo accepts any stereo analog input via RCA connectors, period.

Those "black/red spring loaded wire inputs" are speaker outputs and if you hook one of those to an innocent audio device's Line In connections you might kiss it all goodbye.

Read the manual...

http://www.retrevo.com/support/Onkyo-TX-8211-Receivers-manual/id/365ci165/t/2/

The fan in those Audio System only turns at about 1/4 to 1/3 of the ride of your volume control.
It had been intentionnaly designed like that, to achive a quiet operation at low hearing volume.
But if the fan don't move by cranking up the volume at 1/2 to 5/8 of the volume control (with speakers on). You need to have the fan or the fan power circuit checked by technician.
Spider Guy

Eliminate the short or overheating problem it thinks exists. Disconnect all speakers first to see if one of them is the culprit. If it's internal, take it to a shop.

sounds like the tape monitor may be turned on. First place to check anyways. If it is not the problem, I am happy to talk more about it with you and do some more diagnoses.

regards
Graeme

Channel level output can be adjusted in the menu if you have the remote. Set the rear channel level volume higher and the fronts lower if need be, and then turn up the volume. Enjoy!

the system protect is usually displayed when a condition of short or shorting is occurring in the speaker wiring or the voice coil of any of your speakers.... thte circuit of you reciever is trying to protect itself and you from a very costly repair,,,so it you have another set of speakers try to use them and see if the condition still exists and if it does the problem is in the output section of the receiver,,,and if the protect no longer exists you have fixed your problem,,,good luck