Only two speakers work on playback

This commonly happens based on the source. For example, if your receiver looks at the source that is analog, it will use two channels, the two front left and right speakers. However, some receivers, such as a Denon, have a 5 channel stereo feature that will utilize all 5 speakers (L&R Front, Center, L&R Rear). If you are connecting a DVD player, often you need to configure the source appropriately. If you are connecting using the RCA cables, it will be stereo. If you are using Optical or Coaxial connection, you can enjoy Dolby Digital, but may need to specify in the receivers setup to use these audio source inputs. If you are connecting via HDMI, early versions only supported Dolby Prologic, but you occasionally hear mono sound from rear speakers. Without knowing more about your equipment, what source you are hoping to hear and how you are connected, it will be difficult to pinpoint your cause, but hopefully this helps your understanding to enable you look for the appropriate cause.

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This could be from faulty speaker or incorect wiring for the speakers ! Unistall also drivers for audio - restart - reinstall - restart. Check

If you're saying the auto setup produced sound then the sub and its amp are fine.

So we need to examine the source electronics for actual playback settings. Give a hint of what that might be.

Modern computers have various speaker options, much like amps. What you need to do is to find your actual speaker setup, and then place that as the default rather than the windows default.
Instructions for Windows 7, although others should be similar - Click on the windows start button (Lower left hand corner) - Control Panel - Sound (If you change your 'view by' option to small/large icon, you'll find this easier) - Playback tab
Here you will notice a color meter beside different speaker output options. One will be active when you play music, but no sound will come out as your speakers aren't actually connected physically to that device. You have two options here.
1) Easiest, but may cause problems in future if you change your speakers - Double click on the speaker, and disable it.
2) This option requires a bit more work, but will leave everything else enabled. - Double click on a speaker that doesn't have the meter moving - Advanced Tab - click the test button. If you hear sound, then this is the speaker setup you want. If not, try the next one. - close that pop-up window for the individual speaker, and go back to the main sound menu (Playback Tab) - single click on the speaker that works, and towards the bottom of the playback tab is an option to set it to default. Click on that.

Hi, these instructions will help you with the Audio problem. These are the steps to setup and 'restore' the “Audio Drivers” Part (1) Click on the "Start" button, go to and click in the (right, pane) Control Panel.
Scroll to find, "Ease of Access (or) Speech Recognition Options. Click, on" Replace sound with visual cues."
In the See also: (Category), click, on “Audio Devices, and Sound Themes” click, “Playback” Next, click on the Active "Speakers.” Click “Configure” to "Audio channels" The (Speaker Setup) "wizard,” appear! Select (Test) click, Next! Follow the instructions. Part (2) Click 'Properties' change the "sound"(Level). Click on Enhancements, "Apply" changes. “The (Advanced),“not recommended!” In, the Controller Information (block), click on, Properties to "update" Drivers. Check to see if Device usage: (enable) if not? "Change it." *Note: Click "OK" to all change; 'Save' and Apply!, before exiting. “Did this solution help?”

If you would like to bypass the auto setup which is apparently the root cause, use a test cd/dvd for your test tones. The auto setup while convenient is not the optimal way to get the best result as the test tones it uses are bandwidth limited pink noise. If you would like to use the auto calibrate however, it's likely needing repair to do so.

Solution to having no sound coming from certain speakers in a 7.1 speaker setup for TX-SR606 receiver when playing a DVD.

Review the cable setup for the DVD player since it was identified as the source of the problem. Best to unplug and plug in the cables to ensure they contact the back of the receiver's RCA jacks. Redo the microphone setup for Audyssey 2EQ calibration. A good chance that it is the cable that may have caused the malfunction and loss of sound from the speakers. The cables can come loose during setup and not plugged all the way to the back of the RCA jacks or a defective cable causing signal loss.

Check that you set it to Pro logic and check the speaker set-up. Set it to 5.1 Sounds like somthing is in the wrong setting.

Hello,
Please consider installing sound and movie codecs.
Please go to http://www.free-codecs.org
and download latest xp-codec-pack.
Thank you for choosing agadycom.