"No Sound in left speaker" how to configure 2.1 channel in fedora xfce 17

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http://forums.fedoraforum.org – Asslam o Alaikum i am new user and i am using fedora 17 xfce i am happy to use it:) but there is a problem with speaker configuration.. sound is working for right channel and lfe (sub woofer) but there is no sound in left channel i have (mercury sw 1480 ) subwoofer system that consist of 2 channels (Right left ) and one subwoofer. plz help so that i get sound in the left channel.. i have attached the Alsa-info.txt missing missing the sound in left channel help! Attached Files alsa-info.txt (18.7 KB) (HowTos)