Mackie 24.8Bus Owner's Manual - Page 50

Because Mackie Designs is always trying to improve its products with new components and manufacturing methods, these specifications may change at any time. But you can bet your left monitor speaker that the specs won't be any worse than they are here. ADD-ONS SPECS ETC. APPENDIX C: Specifications 24•8 and 32•8 Specifications Noise.(Measured 20Hz to 20kHz bandwidth, Tape Returns selected, no EQ, Channel Pans alternating L/R, L/R. "Faders up" refers to Unity gain, 0dBu position.) Main L/R Output Noise. Master fader down, -101dBu; master fader up/no ch.'s assigned, -95dBu; master fader up/24 chs. assigned, -90dBu; master fader up/24 chs. assigned, ch. faders up, -86dBu; +4dB operating level S/N ratio, -90dBu Submaster Output Noise. Master fader down, -99dBu; master fader up/no ch.'s assigned, -96dBu; master fader up/24 chs. assigned, -90dBu; master fader up/24 chs. assigned, ch. faders up, -86dBu; +4dB operating level S/N ratio, 90dB Total Harmonic Distortion. (1kHz @14dBu measured 20Hz-20kHz, mic input, 1 channel assigned). Direct output, 0.0013% typical; L/R Mix output, 0.0014% typical; Submaster output, 0.0015% typical Crosstalk. (1kHz measured relative to 0dBu, measured 20Hz to 20kHz.) Line In to Adjacent Channel, -91dBu; L/R mix output w/channel down, -95dBu; submaster output w/channel down, -96dBu; L/R mix output w/channel muted, -95dBu; submaster output w/channel muted, -96dBu; L/R mix output w/channel unassigned, -91dBu; submaster output w/channel unassigned, -95dBu; L/R mix output w/adjacent channel assigned, -92dBu; submaster output w/ adjacent channel assigned, -94dBu; L/R mix output pan pot attenuation, -87dBu; submaster output pan pot attenuation, -87dBu Frequency Response. +0dB/-1dB, any input to any output 20Hz to 60kHz; +0dB/-3dB, any input to any output, 10Hz to 120kHz E.I.N. Mic input (150Ω termination, 20Hz20kHz) -129.5dBm C.M.R.R. Mic input, max gain @1kHz, -83dBu; line input, minimum gain @1kHz, -45dBu; tape input, no gain @1kHz, -45dBu Maximum Levels. Mic input, +14dBu; all other inputs, +22dBu; L/R Mix balanced output, +28dBu, all other outputs, +22dBu Impedances. Microphone input, 1.5 kΩ; channel insert return, 2.5 kΩ; all other inputs, 10 kΩ or greater; all outputs, 120Ω Equalization. Hi Mid, full parametric, +/-15dB freq. sweep from 500Hz-18kHz, bandwidth (Q) variable from 1/12 octave to 3 octaves; Lo Mid, swept, 45Hz-3kHz +/-15dB; Hi, shelving, 12kHz +/-15dB; Lo, shelving 80Hz +/-15dB; Lo Cut (HPF) 75Hz,18dB/octave (Tchebechev) +14 max in 0 -10 trim dn level up +20 0 0 to point (B) level up +15 0 from point (A) 00 level up +15 max out +22 0 MIC INPUT -50 trim up AUX RETURN CH. LEVEL MIX O/P LEVEL AUX SEND OUTPUT +22 max in 0 trim dn LINE INPUT -40 trim up gain up +15 0 0 gain dn -15 INSERT EQ fader up +10 (A) pan center -3 0 (B) -6 -6 L/R bal max out +28 fader up +10 0 max out +22 1-8 bal/unbal L/R unbal 0 (C) FADER PAN CHANNEL MIX SUB INSERT FADER OUTPUT SUBMASTER or MAIN MIX max out +22 0 level up 0 (D) CONTROL ROOM +22 max in 0 switch @+4 0 -12.3 @-10 TAPE INPUT gain up +15 0 gain dn -15 SPLIT EQ level up +15 0 max out +22 level up +15 0 0 CH. LEVEL MIX MIX B O/P LEVEL OUTPUT 0 1-8 from point (C) L/R from point (D) -4 to meters METER FEED (+4 @ O/P = 0 @ METERS) 48