bids are invited for 98 inch large display panel ---1 sitc of microphone: frequency response: 40hz-16khz; sensitivity: -44 db:2db ; length of gooseneck: 420mm; supports discussion & video; dimension: 130x55x105 ( mm ) ; installation dimension: 105x40 ( mm ) no.s 1 2 sitc of amplifier : power output: 175w max., 130w rms at 10% thd, 110w rms at 5% thd ; output regulation = 2 db, no load to full load at 1khz ; input channels : 5 × mic. 0.65mv / 4.7k ohms , 2 × aux 100mv / 470k ohms ; frequency response : 50-15, 000hz ±3db ; signal to noise ratio : 60db ; tone control : bass ±10db at 100hz, treble±10db at 10khz, ; outputs : line: 200mv / 600 ohms, 1v / 1k ohms ; speaker output : 4 ohms, 8 ohms & 100v ; digital player : mp3 player with usb, sd card & bluetooth ; power supply : ac: 220-240v 50 / 60hz , dc: 12v ; power consumption : ac : 250va dc : 4a ; usb pen drive, sd card plug and play, compatible with radio, bluetooth, eq & recording ; 5 channels microphone inputs, 2 channels aux inputs, 1 channel line output.; 100v constant voltage output and 4ω 8 ω 16 ω resistance output. no.s 1 3 sitc of speaker: should have two-way speaker configuration , power handling: 200w peak ( 50w rms ) or more, 5.25” woofer and ½” titanium-laminate tweeter or better; frequency range ( -10 db ) : 80 hz – 20khz or better ; frequency response ( + / -3 db ) : 100 hz – 18khz or better ; power capacity: 150w or more ; sensitivity: 87 db spl, 1 w 1 m ( 3.3 ft ) or better; maximum spl: 108 db continuous, 114 db peak or more; directivity factor ( q ) : 6.0 or better ;directivity index ( di ) : 7.8 db or better ; nominal impedance: 8 ohms or better ; crossover frequency: 4.2 khz or more ; overload protection lf driver: 135mm ( 5.25 in ) low frequency loudspeaker or better ; hf driver: 19 mm ( .75 in ) polycarbonate dome tweeter or better ; enclosure material: polypropylene structural foam should have all-weather construction for the outdoors; easy setup ; input connectors: spring – loaded terminals total quantity : 6