supply, installation, testing and commissioning of audio conference system at the conference room of balurghat panchayat samity, balurghat, dakshin dinajpur. , supply, installation, testing & commissioning of audio conference system at the conference room of balurghat panchayat samity, balurghat, dakshin dinajpur. , sitc of table top chairman unit : chairman priority switch; with 15-18 goose neck microphone on / off or request-to-speak button; led indicator for microphone; headphone connectivity; rotary volume controller for headphone volume ( ahuja / bosch / jbl / akg ) , sitc of table top delegate unit with 15-18 goose neck microphone on / off or request-to-speak button; led indicator for microphone; headphone connectivity; rotary volume controller for headphone volume ( ahuja / bosch / jbl / akg ) , sitc of conferencing controller unitwhich should be designed to cater upto ** 50 nosunits, it must also accept one mic. for participation from observes input volts 220-240 ac ( 50hz ) output 24 v dc current rating 3 amps frquency response 60 to 14000 hz. with power consumption 250 va. ( ahuja / bosch / jbl / akg ) , sitc of 120 watt power amplifier : output power 1khz ( thd+n=1%: 3o ) 100w x 2 ( 20ms burst ) ; 1khz ( thd+n=1%:4o ) 120w x 2 ( 20ms burst ) ; 1khz ( thd+n=1%: 8o ) 100w x 2 ( 20ms burst ) ; high impedance: 100v line 120w x 2 or 200w x 1 ; high impedance: 70v line 120w x 2 or 200w x 1 ; total harmonic distortion=0.2% ( line in to speaker out, half power @1khz, 3o / 4o / 8o ) , =0.2% ( line in to speaker out, half power @1khz, 70v / 100v, 120w / 200w ) mains voltage: 230v ac, 50 hz. ( make:-ahuja / crown / bi-amp / studio master / bosch ) , s & f of speacial typecoxial cable connector for connecting chairman unit and delegate unit each other. with 10 mtrs 6 core felxible cable with necessary all arrangement. , s & installation of compact, light weight, dual channel, vhf wireless microphone system ( jbl / bosch / ahuja ) , supply, testing & installation of 20 / 16 watt wall mounthigh fidelity 2 way, 100 v multi purpose speaker ( ahuja / bosch / jbl / apart ) , cost of supply and fixing of wardrope type in size 4 x 3 x 18 by wooden / iron with glass door in 2 racks with lock & key arrangement. , sitc of xlr, ts, trs, 3.5mm connectors as required approved make- neutrik, swisscraft, amphenol , sitc of 230 volt 1 kva line interactive ups with minimum battery back up of 15 min ( make:-apc / numeric / delta / vertiv / micotek ) , supply and laying 2 core 1.5 sq mmspeaker cable through suitable size polythene pipe.