bids are invited for meb 114-s - supply of cardioid pre-polarized condenser on-table boundary layer microphone with 3-pin xlr, programmable microphone button for toggle on/off, ptm, ptt and permanent, bi-color led ring for status indication, ttl logic connector with logic inputs and outputs, frequency response of 40 hz - 20,000 hz or better, sensitivity of 10 mv/pa or better, nominal impedance at 1 khz of 200 o or better, current consumption of 5.3 ma or better, maximum spl of 140 db or better, operating on 48 v phantom power. approved makes: sennheiser, rode, clock audio , meg14-40-b - supply of cardioid pre-polarized condenser on-table boundary layer microphone with 3-pin xlr, programmable microphone button for toggle on/off, ptm, ptt and permanent, bi-color led ring for status indication, ttl logic connector with logic inputs and outputs, frequency response of 40 hz - 20,000 hz or better, sensitivity of 10 mv/pa or better, nominal impedance at 1 khz of 200 o or better, current consumption of 5.3 ma or better, maximum spl of 140 db or better, operating on 48 v phantom power. approved makes: sennheiser, rode, clock audio , mat 133-s-b - supply of table stand for connecting and operating xlr gooseneck microphones with xlr-3f microphone input and an xlr-3m microphone output operating on 48 v phantom power and current consumption of 3.7 ma or better. approved makes: sennheiser, clock audio, rode, , mg16xu - on-board processors spx algorithm: 24 programs, parameter control:1, foot sw:1 (fx rtn ch on/off) ; phantom power +48 v ; digital i/o usb audio class 2.0 compliant, sampling frequency: max 192 khz, bit depth: 24-bit ; mono[mic/line] 8 ; mono/stereo[mic/line] 2 ; stereo[line] 2 ; stereo out 2 ; monitor out 1 ; bus stereo: 1, group: 4, aux: 4 (incl. fx) approved makes: yamaha, soundcraft, allenheath , design max dm3se - supply ,installation, testing and commissioning of ceiling flush music/pa loudspeaker: should have frequency range (-10db) of 75hz to 20khz; power ha