Mackie Big Knob Owner's Manual - Page 8

BIG KNOB DIM Pressing this button turns down the signal going to the MONITOR A, B, and C outputs by 20 dB. This lets you turn down the speakers to converse without affecting the speaker level you have set. Note: Like the Big Knob VOLUME control, the MONO, MUTE, and DIM buttons ONLY affect the MONITOR A, B, and C outputs. These buttons have no effect on the currently selected source(s) as they are routed to the other various outputs. POWER LED This LED lights when the POWER switch is turned on and Big Knob is receiving AC power. It lets you know that Big Knob is turned on, even if no other buttons are pressed that would light up their associated red LED. MONITOR SELECT A Press this button to route the currently selected input source(s) to the MONITOR A output jacks. B Press this button to route the currently selected input source(s) to the MONITOR B output jacks. C Press this button to route the currently selected input source(s) to the MONITOR C output jacks. Application Note: You can have one, two, or all three MONITOR outputs turned on at the same time. You could connect MONITOR B to a pair of full-range speakers and MONITOR C to a subwoofer. Use the MONITOR C button as a "subwoofer IN/OUT" switch to compare the sound with and without the subwoofer. PHONES 1 and 2 These 1/4-inch TRS connectors output an ampli- fied stereo signal of either the DAW PHONES MIX INPUT or the INPUT SOURCES , depending on the position of the PHONES/STUDIO OUT SOURCE switch described below. PHONES 1 and 2 Level Control These rotary knobs control the volume of the stereo signal at the PHONES 1 and 2 headphone connectors. The same signal appears at both headphone outputs, but the volumes are adjusted independently with these level controls. Note: Turn down the PHONES LEVEL controls before plugging in your headphones. The PHONES outputs are designed to drive headphones to a very loud level, so it is best to start with the LEVEL controls turned all the way down and then turn them up SLOWLY to a comfortable listening level. In fact, starting right now, get in the habit of turning down the PHONES LEVEL controls when you are done using your headphones so you don't plug them in later and accidentally blow out your ears! PHONES/STUDIO OUT SOURCE Button This button affects the stereo signal going to: • Both headphone outputs (PHONES 1 and 2) on the front panel • The PHONES AMP output on the rear panel • The STUDIO OUTS on the rear panel When INPUT SOURCE(S) is selected (up), the above outputs are fed the signal from the INPUT SOURCE SELECT buttons. This is the same signal that goes to the MONITOR A, B, and C outputs. In this position, the recording engineer and the talent can listen to the same mix (the MONITOR outs and STUDIO/PHONES outs have the same signal). INPUT OL 8 0 4 8 24 0 = +4dBu PHONES 1 MAX 2 MAX INPUT SOURCE SELECT DAW MIX 2-TRACK A 2-TRACK B PHONO PHONES/ STUDIO OUTS SOURCE STUDIO OUTS INPUT SOURCE(S) PHONES MIX INPUT OFF OO MAX ON LEVEL MIC MONO OO POWER MONITOR SELECT MAX VOLUME MUTE DIM OO A B C TALKBACK MAX LEVEL TO 2-TRACKS TO PHONES/ STUDIO OO OO  BIG KNOB