双扬声环绕效果

lighting equipment led screens testing blinders testing lasers testing free d video testing viral tech okay we are about to do a full frequency sweep forty arts fifty arts two hundred hurts four hundred forty hurts one killer hurts two killer hurts five killer hurts ten killer hurts okay subwoofer kick test balance check left channel the sound should now be at the left speaker right channel the sound should now be at the right speaker left channel right channel left channel right channel left channel right channel left channel right channel before proceeding with this show we'll have to do one more test testing it maximum volume starting in ten nine。