work related to engagement of agency for sound system hiring, maintenance and projection operation at ccb-1 sound system hiring, maintenance and projection operation at ccb 2 5.1 complete theatre quality sound system with sufficient number of left, right, centre speakers, 12 no. surround speakers along with subwoofer and stereo power amplifiers, audio console with channel mixer etc. with operation & maintanance ( 1 gross ) 3 one personnel all time stay at hall to observe and operate the sound system ( 1 no ) 4 one projection operator all time stay at projection room to observe and operate the projection system ( 1 no )