bids are invited for central amplifier - providing and installation of ahuja make central amplifier cma-5400 for conferencing system, having a built in 50 w pa amplifier, inputs for three microphones and an auxiliary source, with fuction of usb/digital recording etc. including wiring & cost of all material and t&p required for proper completion. , chairman unit - providing and installation of ahuja make chairman unit cma-5100 for conferencing system, having high quality sensitive electret condenser microphone mounted on 18.5 flexible gooseneck with ring led indicator, non-lockable priority switch, built in loudspeaker and recessed volume controls for setting desired sound levels and headphone output with volume control etc. including wiring & cost of all material and t&p required for proper completion. , delegate unit - providing and installation of ahuja make delegate unit cma-5200 for conferencing system, having high quality sensitive electret condenser microphone mounted on 18.5 flexible gooseneck with ring led indicator, built in loudspeaker and recessed volume controls for setting desired sound levels and headphone output with volume control etc. including wiring & cost of all material and t&p required for proper completion. , 8 dual cone full range 15w/100v ceiling speaker - providing and installation of ahuja make 8 dual cone full range 15w/100v ceiling speaker cs-8151t for conferencing system, having high fidelity and excellent frequency response, 100v line operation with easy power tap selection through a terminal block including wiring & cost of all material and t&p required for proper completion. , 160 watts high power pa amplifier - providing and installation of ahuja make 160 watts high power pa amplifier ssa-160em for pa system, having 5 mic & 2 aux inputs. preamplifier and line output for connecting to a booster amplifier and for recording the programme etc. including wiring & cost of all material and t&p required for proper completion. , single c