Mackie Big Knob Owner's Manual - Page 11

Operation Guide For example, the DAW's 1-2 outputs can send the main mix to the DAW MIX inputs on Big Knob, and the DAW's 3-4 outputs can send a custom headphone mix to the DAW PHONES MIX INPUT. You can then use the PHONES/STUDIO OUTS SOURCE button to select the mix for the PHONES and STUDIO OUTS . DAW PHONES MIX Level Switch This two-position switch sets the input level of the DAW PHONES MIX inputs to either +4 dB (balanced input) or -10 dB (unbalanced input). Use the +4 dB setting for professional equipment or soundcards operating at the +4 dBu standard, and use the -10 dB setting for consumer equipment or soundcards operating at the -10 dBV standard. TALKBACK FOOTSWITCH MONITOR C OUTPUTS Works as described above for the Monitor A path. MONITOR C Trim Control Works as described above for the Monitor A path. Note: The overall level of the MONITOR A, B, and C OUTPUTS is controlled by the Big VOLUME Knob on the front panel. 2-TRACK A OUTPUTS These stereo 1/4-inch balanced/unbalanced outputs connect to the inputs of the first external 2-track recorder. This could be a DAT deck, cassette deck, reel-to-reel recorder, etc. The signal at these outputs is whatever source is selected with the INPUT SOURCE SELECT buttons on the front panel. This 1/4-inch TS connector accepts a standard momentary footswitch (normally open), or a momentary handheld switch such as the Switchcraft ED900. This allows a producer standing at a remote location to activate the talkback circuit and communicate with recording talent. When an external switch is connected and goes from its "normally open" position to its "momentary closed" position, the front panel TALKBACK TO 2-TRACKS and TO PHONES/STUDIO buttons both activate, their LEDs illuminate, and the talkback circuit is activated just as if someone had physically pressed these two buttons. See "Appendix B: Connections" for a wiring diagram of the footswitch connection. OUTPUTS The following outputs are fed by the "control room bus." This is the signal path fed from the inputs currently selected with the INPUT SOURCE SELECT buttons and routed through the Big VOLUME Knob. 2-TRACK A Level Switch This two-position switch sets the level of the 2-TRACK A outputs to either +4 dB (out) or -10 dB (pushed in). Use the +4 dB setting when connecting to balanced inputs on professional equipment operating at the +4 dBu standard, and use the -10 dB setting when connecting to unbalanced inputs on consumer equipment operating at the -10 dBV standard. 2-TRACK B OUTPUTS Works as described above for the 2-TRACK A OUTPUTS. 2-TRACK B Level Switch Works as described above for the 2-TRACK A level switch. DAW OUTPUTS These stereo 1/4-inch balanced/unbalanced outputs connect to a pair of inputs on the DAW audio interface. DAW Level Switch MONITOR A OUTPUTS These stereo 1/4-inch balanced/unbalanced outputs connect to the first set of external speakers. You can connect these outputs to self-powered speakers, or to a power amplifier driving passive speakers. MONITOR A Trim Control This two-position switch sets the level of the DAW outputs to either +4 dB (out) or -10 dB (pushed in). Use the +4 dB setting when connecting to balanced inputs on professional equipment or soundcards operating at the +4 dBu standard, and use the -10 dB setting when connecting to unbalanced inputs on consumer equipment or soundcards operating at the -10 dBV standard. This trim control adjusts the sensitivity of the MONITOR A output signal. Use the +4 dB setting when connecting to balanced inputs on professional equipment operating at the +4 dBu standard, and use the -10 dB setting when connecting to unbalanced inputs on consumer equipment operating at the -10 dBV standard. The trim control can be adjusted to any setting between the +4 and -10 positions if necessary to precisely match the levels among the MONITOR A, B, and C outputs. MONITOR B OUTPUTS Works as described above for the Monitor A path. MONITOR B Trim Control By allowing balanced or unbalanced operation, as well as -10 or +4 operation, on an individual basis, you can connect any combination of professional or consumer 2-track recorders and DAW soundcards that you have available in your arsenal of audio recording equipment. Note: All three of the above outputs (2-TRACK A, 2-TRACK B, and DAW) produce the signal selected by the INPUT SOURCE SELECT buttons on the front panel. These outputs require no variable level output controls (aside from the +4/-10 switches), since the connected 2-track recorders and DAW inputs typically have their own variable input level controls. Works as described above for the Monitor A path. Operation Guide 11