Mackie Digital 8 Bus Owner's Manual page 223

Specifications
Analog Input/Output Section
Inputs
Frequency Response
20Hz-20kHz 0.5 dB
Crosstalk
(0 dBu @ 1kHz)
Adjacent channels
Aux sends feed through
Main outputs
Channel Section (Mic/Line)
Line input:
Mic Input:
Preamp dynamic range
114 dB max.
E.I.N.
–129.5dBu 150 source
–131.2dBV 150 source
CMRR
–83 dB @1kHz
Distortion
0.005% @ 1kHz, +14dBu output level
(20Hz–20kHz filter)
Mic gain range
Unity to +60 dB
Line In gain range
–20 dB to +40 dB (channels 1–12)
–20 dB to +20 dB (channels 13–24)
Ch. fader gain range
–100 to +10 dB
2 Track Input gain
0 dBu
Line Input max. level
+4 dBu nominal, +22dBu clipping
Input Impedances
Mic preamp input:
Line inputs: Balanced
G-4
Technical Info
Outputs
Maximum Output Levels
(0 dBu = 0.775v rms)
Left and Right Outputs:
Bus (Tape) out:
–90 dBu
Aux send:
–90 dBu
Inserts:
–90 dBu
Output gain ranges
Aux Send:
Bus:
balanced 1/4" TRS input
Master L/R Fader:
balanced XLR input
Solo:
Talkback:
Dim:
Speaker (Mains/Near Field):
Studio:
To Tape Level:
Output Impedances
All balanced outputs:
All unbalanced outputs:
Meters
26 LED ladders
24 LEDs per channel from –50 to 0 dB FS
(0 dB FS = +20 dBu)
Digital Input/Output
AES/EBU:
Connector Type: XLR 3-Pin
Impedance: 600
Maximum Output: 0 dB FS
Maximum Input: 0 dB FS
Bit Resolution: Output = 24/Input = 24
Format: IEC958 Professional
S/PDIF:
Connector Type: RCA
Impedance: 75
Maximum Output: 0 dB FS
Maximum Input: 0 dB FS
Bit Resolution: 24 bit (input and output)
Format: IEC958 Consumer
2.4k
Converters
>10k
24-Bit, 115 dB Signal-to-Noise-Ratio (EIAJ),
106 dB Dynamic Range, 128X oversampling
+22dBu balanced 1/4" TRS
+28dBu balanced XLR
+22dBu balanced 1/4" TRS
+22dBu balanced 1/4" TRS
+22dBu unbalanced 1/4" TRS
Off to +10 dB
Off to +10dB
–100 dB to +10 dB
–100 dB to +10 dB
fixed at +60 dB gain on panel mic
–20 dB attenuation on control room outputs
–100 to 0 dB
–100 dB to +10 dB
–100 dB to +10 dB
240
120