supply of digital audio system,supply installation testing and commissioning of digital audio processor for configuring vc syste m with conference system 6 channel digital processor inputs : 4 balanced mic, 2 balanced mic/line,1 stereo un balanced input inputs equipped with low-cut filter, phase inversion and 4-band eq onboard aec processing; 1 s tereo and 2 mono outputs each output channel equipped with adjustable output level, 12-band fully parametric e q with notch filtering, compressor, limiter, and 8-band feedback suppressor. 2- channel usb audio interface 8 x 3 audio routing matrix; maximum gain : 64 db or better dynamic range : 110 db or better; signal-tonoise ratio:9 0 db or better front panel monitoring, controls and led indicators; web remote functionality ip control for third- party ccs administration; cascadable upto 6 units euroblock connectors accessories : rack-mount adapters a cceptable make/brand : biamp / clearone /qsc / audio technical. [ warranty period: 30 months after the date of delivery ] , supply installation testing and commissioning of 4 coaxial ceiling / wall speaker driver size : 1 x 4? lf & 0.79 hf driver rms power : 30 w in-built transformer tap : 100v /70v upto 25w nominal impedanc e: 8 ohm frequency range (-10 db) : 70 hz-20 khz sensitivity: 84db dispersion: 120 degree conical @ 1khz maximum spl : 105db peak or better certification: ul 94v-0, en54-24:2008 certified type a, ul 1480/ul 2043 enclosure: steel backcan aluminum, powder coated grill included accessories: metal grille, cable gland, flex con duit, c-ring, tile-bridge kit, paint mask, cutout template acceptable make : tannoy / martin audio / atlasied /bos e [ warranty period: 30 months after the date of delivery ] , additional wireless microphone compatible with the above portable musical amplifier combo wirel ess uhf microphone system, svx288in/pg-58 (consisting 2 nos. hand held wireless microphones working on a single receiver) . available frequencies: between 794-806 mhz. operating range: lo power mode: 18 m (60 f t.)* hi power mode: 75 m (250 ft.)* * under typical conditions . audio frequency response: 50 hz - 15 khz . tra nsmitter rf output power: lo power mode: 1 mw maximum hi power mode: 10 mw maximum . audio output connector: xlr balanced and 1/4 unbalanced. maximum output level: -19 dbv (xlr), -5 dbv (1/4) regulatio n)(ref. +/-33khz deviation with 1 khz tone) . battery life: up to 10 hours with 2 aa batteries . dynamic range: > 90db, a-weighted . system distortion: acceptable make/brand -shure / equipson /bose/mayersound/ audio foc us/ sennheizer [ warranty period: 30 months after the date of delivery ] , digital wired audio conference system for conference room. (i) supply inst allation testing and commissioning of digital chairman discussion /conference unit with removable microphon e of minimum length 400mm chairman discussion unit with built in digital signal processing unit with priority a nd next-in-line configuration priority button silences all delegate microphones and allows only the chairperson to speak; next-in-line button gives the floor to the next speaker in a waiting list of speakers who requested to speak. user button with feedback; shielded microphone, immune to mobile phone interference, high-quality integrated l oudspeaker; headphone output with volume adjustment loop through, daisy-chain cabling; unit with bi color bar indicator compatible screw lock microphone of length 400mm different led signalling for mic on/off or requ est-to-speak push button or better audio quality 16bit digital; frequency response: 25 hz-15,000 hz (3 db) or be tter microphone with 400 gooseneck length; polar pattern: unidirectional, cardioid max spl@ 1khz: 110 db s pl (1% thd+n) or better s/n ratio: > 67 db(a); sensitivity: (-40.5?2) dbv @ 1pa, 1khz or better microphone w ith ring indicator to light up red when active and green when in request connection: screw lock material: bras s; certification: ce need to submit; 2m cat5e cable from the same oem acceptable make/brand : televic / ba yerdynamic, marcony technology / audix. [ warranty period: 30 months after the date of delivery ] , supply installation testing and commissioning of digital delegate discussion / conference unit wit h removable microphone of minimum length 400mm delegate discussion unit with built-in digital signal proce ssing unit with microphone on / off button; user button with feedback shielded microphone, immune to mobile phone interference high-quality integrated loudspeaker; headphone output with volume adjustment loop-through , daisy-chain cabling; unit with bi color bar indicator compatible screw lock microphone of length 400mm differ ent led signalling for mic on/off or request-to-speak push button connectivity: 2 digital bus connections (in/ out interchangeable) headphone connection. audio quality 16bit digital; frequency response: 25 hz-15,000 h z ( 3 db) or better microphone with 400 gooseneck length; polar pattern: unidirectional, cardioid max spl @ 1 khz: 110 db spl (1% thd+n) or better s/n ratio: > 67 db(a);sensitivity: (-40.5?2) dbv @ 1pa, 1khz or better connection: screw lock microphone with ring indicator to light up red when active and green when in request material: brass; certification: ce need to submit; 2m cat5e cable from the same oem acceptable make/brand : televic / bayerdynamic / marcony technology / audix [ warranty period: 30 months after the date of delivery ] , supply installation testing and commissioning of conference connection cable, 10m, black and ot her interconnecting cables, jacks. [ warranty period: 30 months after the date of delivery ] , supply installation testing and commissioning of digital central conference controller with recor ding & web server, conference controller with built-in digital signal processing control upto minimum 50 discu ssion unit and expandable upto 150 discussion unit by configuring multiple controller unit,controller unit with 4 bus connections (4 branches or 2 closed loops) for redundancy mechanism; 16 channel, frequency response-2 0hzto 20khz, snr - greater than85db(a); dynamic rage greater than 80db, thd - less than0.05% , audio inpu t line in x 2, audio output - line output x 2; output load - greater than1ko; lan interface - 1x rj45; reco rding usb x 1; amplifier output - 2x25w/4o control port - rs232, rj45; ptz camera control shall support co ntrol & configure the controller via the integrated web server; two usb connections to connect usb storage d evice for direct recording of the meeting. the second usb storage device will take over automatically in-scena ro the first usb storage get full; camera control integration capability, controller with lcd display to implement several conference mode: direct access, request, push to talk, fifo, vox control; selectable voice activation, volume control 0 db to -46 db + off; digital acoustic feedback reductionwith audio input & output for connec tivity with external system like amplifier, wireless microphone & audio/video conference system, audio quality 1 6bit digital with power saving mode allows the controller to sleep state if it has been left on. [ warranty period: 30 months after the date of delivery ] , stranger wireless portable musical amplifier or similar specifications: 20 watts r ms output with 8 dual cone speaker. effects: digital vocal echo. (mic. 1) built in cordless receiver & microp hone. 3 mic. low impedance / 1 aux. / mp3 player with recording. line out & external speaker out (switchabl e) compact size, moulded grill & plywood rexine finish. power supply: ac 220v 50 hz /12v dc built in mainte nance free lithium battery with auto changeover & rechargeable type. [ warranty period: 30 months after the date of delivery ] , supply installation testing and commissioning of 4 channel 300 watt power amplifier class d po wer handling : 4 *75 w @ 4 ohms, 4 * 50 w @ 8 ohms rms power bridged mode : 150 w @ 8 o thd 20hz-2 0khz at 1 w