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8

BIG KNOB

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 with-
out 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 cool blue 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 speak-
ers 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-
fi ed 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 connec-
tors. 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 ac-
cidentally 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 SOURCE(S)
PHONES MIX INPUT

OFF
ON

POWER

POWER

MUTE

DIM

MONO

MIC

TO

PHONES/

STUDIO

TO

2-TRACKS

LEVEL

LEVEL

1

O

O

MAX

O

O

MAX

2

O

O

MAX

O

O

MAX

TALKBACK

STUDIO OUTS

INPUT SOURCE SELECT

PHONES/

STUDIO OUTS

SOURCE

DAW

MIX

2-TRACK

A

2-TRACK

B

PHONO

MONITOR SELECT

A

B

C

OL

8

0

4

8

24

INPUT

PHONES

0 = 

+

4dBu

VOLUME

MAX

O

O

Summary of Contents for BIGK NOB

Page 1: ...POWER POWER MUTE DIM MONO TO PHONES STUDIO TO 2 TRACKS LEVEL LEVEL 1 O O MAX O O MAX 2 O O MAX O O MAX TALKBACK STUDIO OUTS INPUT SOURCE SELECT PHONES STUDIO OUTS SOURCE DAW MIX 2 TRACK A 2 TRACK B PH...

Page 2: ...ety and Health Administration OSHA has specified the permissible noise level exposures shown in the following chart According to OSHA any exposure in excess of these permissible limits could result in...

Page 3: ...ing 13 Repair 14 AppendixB Connections 15 XLRConnectors 15 1 4 TRSPhonePlugsandJacks 15 1 4 TSPhonePlugsandJacks 15 RCAPlugsandJacks 15 FootswitchPlugandJack 15 AppendixC TechnicalInfo 16 BigKnobSpeci...

Page 4: ...8 24 INPUT PHONES 0 4dBu VOLUME MAX O O GettingStarted The following steps will help you set up your Big Knob and get the levels adjusted correctly Once you have made the connections and adjustments...

Page 5: ...ctive speakers and headphone amplifiers 3 Start playback on your DAW and play some thing you ve already recorded or a demo track You want to be able to listen to it over the moni tor speakers connecte...

Page 6: ...e STUDIO OUTS jacks is in the 10 dB position counterclockwise If it is turn the control up to the 4 dB position and then turn up the LEVEL control Now it should get louder faster 12 If you have a head...

Page 7: ...ACK 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 si...

Page 8: ...f 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 connec tors The same signa...

Page 9: ...TRACK B output connectors DAW output connectors TO PHONES STUDIO Pressing this momentary button illuminates the red LED above the button activates the internal talk back MIC and sends its signal to t...

Page 10: ...you to precisely fine tune the incoming level of the DAW MIX input so it matches the signal level of other incoming 2 track sources PHONO These stereo RCA unbalanced inputs are fed by the outputs of a...

Page 11: ...ecessary 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 Works as described above for the Mon...

Page 12: ...to an amplifier and passive monitors in the studio per formance space This allows the performers to hear playback without having to use headphones and allows the control room engineer to communicate...

Page 13: ...them one by one When the noise goes away you ll know which input source is causing the problem Sometimes it helps to plug all the audio equip ment into the same AC circuit so they share a common groun...

Page 14: ...nsible for any damage that occurs due to non factory packaging 5 Include a legible note stating your name ship ping address no P O boxes daytime phone number RA number and a detailed description of th...

Page 15: ...d Tip Hot FootswitchPlugandJack The TALKBACK FOOTSWITCH jack accepts a 1 4 TS plug Shorting the tip and sleeve together activates the talkback circuit This is equivalent to pressing the TO 2 TRACKS an...

Page 16: ...Muted Level Off 90 dB 1 kHz Trim Control Range Input Trim Controls Center Detented 10 dB Output Trim Controls 14 dB to 0 dB Dim Switch 0 dB 20 dB Rated Input Voltage Line Inputs 4 dB Level Setting 4 d...

Page 17: ...s and are hereby acknowledged 2004 LOUD Technologies Inc All Rights Reserved INPUT SOURCE S PHONES MIX INPUT OFF ON POWER POWER MUTE DIM MONO MIC TO PHONES STUDIO TO 2 TRACKS LEVEL LEVEL 1 O O MAX O O...

Page 18: ...NPUT L R L MONO RIAA RIAA TRIM TRIM VDC VDC OFF ON TRIM VDC OFF ON TRIM VOLUME VDC DIM 0 dB 20 dB VDC OFF ON OFF ON R L MONO R L MONO R 4 10 dBV 4 10 dBV 4 10 dBV 10 10 10 10 10 10 10 10 VDC VDC VDC O...

Page 19: ...d in the Service section of this manual 5 Contact the Authorized Mackie Service Center to arrange service or bring the Mackie product to them F LOUD Technologies and Authorized Mackie Service Centers...

Page 20: ...16220 Wood Red Road NE Woodinville WA 98072 USA US and Canada 800 258 6883 Europe Asia Central and South America 425 487 4333 Middle East and Africa 31 20 654 4000 Fax 425 487 4337 www mackie com E m...

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