Mackie A, N Front Panel, INPUT SOURCE SELECT Section, Big Knob Features

Big Knob Features

Front Panel

INPUT SOURCE SELECT Section

These buttons turn on or off the four input signals connected to Big Knob. Any combination of the four inputs can be turned on at the same time, as indicated by the red LEDs above the buttons.

When selected, these input sources are routed to the MONITOR A, B, and C stereo outputs, the 2-TRACK A and 2-TRACK B stereo outputs, the DAW stereo outputs and, when the PHONES/STUDIO OUTS SOURCE button is out (INPUT SOURCES), to the PHONES AMP and STUDIO OUTS stereo outputs, and to the PHONES 1 and 2 outputs on the front panel.

A Cautionary Note: When you have a 2-track recording device connected to both the inputs and the outputs on Big Knob, you run the risk of creating a feedback

loop. If the recording device is in record, record pause, or input monitor mode, the signal can go from the 2-TRACK outputs through the recording device and back into the 2-TRACK inputs, creating a circular loop that results in a terrible howl.

You must remember to turn off the 2-TRACK INPUT SOURCE SELECT button when recording to your 2-track recorder!

DAW MIX

Turns on the signals connected to the DAW MIX stereo inputs.

2-TRACK A

Turns on the signals connected to the 2-TRACK A stereo inputs.

2-TRACK B

Turns on the signals connected to the 2-TRACK B stereo inputs.

PHONO

Turns on the signals connected to the PHONO stereo inputs.

INPUT METERS

These six segment meters show the signal level of the currently selected stereo source(es). The scale of the six segments of the meter is:

–24, –8, –4, 0, +8, and OL (Overload), where “0” is referenced to +4 dBu.

VOLUME

This Big Knob adjusts the volume of the selected input source going to the selected speaker outputs (MONITOR A, B, and C). The VOLUME knob ONLY affects the volume level of the monitor outputs (A, B, and C). It does not affect the volume of the signal going to other outputs, such as the headphone out- puts, 2-TRACK outputs, or DAW outputs.

The VOLUME knob ranges from OFF (∞) to +10 dB of gain (MAX).

MONO

Pressing this button combines the stereo signal into a monophonic signal at the MONITOR A, B, and C outputs. The left and right input signals are summed and the mono signal is output at both the left and right outputs. This lets you check for phase problems in the stereo signal when played over a monophonic system.

MUTE

Press this button to mute the signal going to the MONITOR A, B, and C outputs.

Guide Operation

INPUT

OL

8

0

4

8 24

0 = +4dBu

PHONES

1

OO

2 OO

	INPUT SOURCE SELECT			MIC
DAW	2-TRACK	2-TRACK	PHONO
MIX	A	B
		STUDIO OUTS
				OO
	PHONES/
	STUDIO OUTS
	SOURCE
MAX				MONO
	INPUT SOURCE(S)	OFF	OO	MAX
			LEVEL
	PHONES MIX INPUT	ON

MAX

POWER

			MONITOR SELECT
		A		B	C
				TALKBACK
VOLUME	MAX
	DIM
MUTE	OO	MAX		TO	TO
	LEVEL			2-TRACKS	PHONES/
					STUDIO

Operation Guide