Mackie instruction manual DX8 Specifications, Inputs / Outputs

DX8 Specifications

INPUTS / OUTPUTS

Inputs 1-8:	Balanced, Phoenix-type terminals
Bus A and B:	Balanced, Phoenix-type terminals, Direct to
	Mix Buses
Master Outputs:	Balanced, Phoenix-type terminals
Record Outputs A/B:	Unbalanced, RCA
Direct Outputs 1-8:	Unbalanced on DB15
	(bottom row is signal return)
Logic Inputs:	10 Inputs on DB25
	Series resistance: 570Ω
	Internal pull-up:	47kΩ to +5V DC
	Input voltage:	+5.5V DC maximum
	Active voltage:	+1.0V DC maximum
Logic Outputs:	10 open-collector Outputs on DB25
	Series resistance: 550Ω
	Internal pull-up:	10kΩ to +5V DC
	Active current:	10mA maximum
	Active voltage:	+0.8V DC max @ 1mA
Serial Ports:	2 RS-232C on DB9 (COMM PORTS)

CONTROLS

Input Trim:	8	Rotary Potentiometers
Input Gain:	2	Pushbuttons per Input
EQ:	2	Pushbuttons for Low, 2 for High
Master Output Gain:	2	Pushbuttons per Output
Mode Select:	1	Pushbutton
Power:	Rocker Switch
Phantom Power Select:	8	DIP Switches

INDICATORS

Input Levels:	12-segment LEDs per ch.
Output EQ Levels:	12-segment LEDs per ch.
Mode Status:	3 LEDs; A/B/LOCK
Output Levels:	12-segment LEDs per ch.
Volume Setting:	12-segment LED Bar Graph

SIGNAL PROCESSING

General:	Five 32-bit floating-point DSPs
	24-bit A/D and D/A converters
	512Kx16 Flash ROM
	128Kx32 SRAM (with battery backup)
Inputs:	3-band shelving/peaking EQ
	Gain: ±15 dB
	Frequency:
	LO Shelving: 20Hz-500Hz variable
	MID Peaking: 20Hz-20kHz variable
	HI Shelving: 500Hz-20kHz variable
	Automatic Level Control (ALC)
	Range: 0 dB to –20 dB
	Automix
	NOM On/Off
	Gate Attenuation Depth: 0 dB to –60 dB
	Gate Release Time: 0.5 s or 1.5 s
Outputs:	Automatic Level Control (ALC) on each Output
	Range: 0 dB to –20 dB
	Automix MAX NOM: 1-8
	Automix Last Mic On: None, Last, Input 1
	2-band shelving EQ on each Output
	Gain: ±15 dB
	Corner Frequency:
	LO: 20Hz-500Hz variable
	HI: 500Hz-20kHz variable
	1/3-Octave Graphic EQ on each Output
	Gain: ±15 dB
	ISO-Centered Frequencies: 20, 25,
	31.5, 40, 50, 63, 80, 100, 125, 160,
	200, 250, 315, 400, 500, 630, 800, 1k,
	1.25k, 1.6k, 2k, 2.5k, 3.15k, 4k, 5k,
	6.3k, 8k, 10k, 12.5k, 16k, 20k
	5-Band Parametric EQ on each Output
	Gain: ±15 dB
	Center Frequency:
	20Hz-20kHz variable
	Bandwidth: 0.1 octave to 6 octaves
	Compressor/Limiter on each Output
	Threshold: –60.0 dB to –1.0 dB
	Attack: 1 ms to 2500 ms
	Release: 10 ms to 2500 ms
	Ratio: 1:1 to 20:1
	Output: 0 dB to +20.0 dB

LED METER VALUES

1. Red (scale: OL): > –2 dB full-scale (> 16 dBu)

2.Yellow (scale: 2): > –4 dB full-scale (> 14 dBu)

3.Yellow (scale: 4): > –7 dB full-scale (> 11 dBu)

4.Yellow (scale: 7): > –10 dB full-scale (> 8 dBu)

5.Green (scale: 10): > –15 dB full-scale (> 3 dBu)

6.Green (scale: 15): > –20 dB full-scale (> –2 dBu)

7.Green (scale: 20): > –25 dB full-scale (> –7 dBu)

8.Green (scale: 25): > –30 dB full-scale (> –12 dBu)

9.Green (scale: 30): > –35 dB full-scale (> –17 dBu)

10. Green (scale: 35): > –40 dB full-scale (> –22 dBu)

11. Green (scale: 40): > –50 dB full-scale (> –32 dBu)

12. Green (scale: 50): > –60 dB full-scale (> –42 dBu)

Audio

Noise

(20Hz-20kHz bandwidth, Master Out, channel Trims @ unity gain, channel EQs flat, all odd channels panned left, even channels panned right):

Master level @ unity, channel levels @ unity: –82 dBu

Single channel to Master Out:–100 dBu (referenced to 1% THD+N)

Total Harmonic Distortion (THD+N)

(1kHz @ +10 dBu (unity level) 20Hz-20kHz):

Mic in to Master Out: < 0.005%

DX8 – 31