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Owner’s Manual
Owner’
s Manual
• Excruciatingly simple 2x2 monitor controller
• Choose between two sources and two
monitor pairs.
• Classic Big Knob volume control.
• Professional mono, mute and dim functions.
• Pristine audio quality
• Passive audio path with no power supply needed.
• Sturdy “Built-Like-A-Tank” design
Contents
Big Knob Passive Features
Introduction
The Big Knob Passive benefits from a proven,
bestselling design to deliver professional level control,
plus source and monitor selection for studios of any size.
The passive audio path ensures pristine sonic integrity
is maintained throughout your signal chain. More than
just a level control solution, Big Knob Passive features
the ability to choose between two sources and two
monitor pairs.
Ideal for simple level control at a home or project
studio or for integration in a large studio or group of
editing suites, Big Knob Passive is the “Built-Like-A-
Tank,” affordable monitoring control solution.
Quick Start
We realize that you can’t wait to hook up your Big
Knob Passive and try it out. Nevertheless, please take
the time to read this page NOW, and the rest can wait
until you’re good and ready.
1. Turn down all knobs.
2. Disengage all switches.
3. Plug signal sources into the Big Knob, such as:
• Audio interface.
• Line-level sources such as keyboards, drum
machines, or MP3 players plugged into the
line-level inputs.
• Other stereo playback devices.
4. Connect cords from the monitor outs to powered
speakers (or to an amplifier connected to passive
speakers).
5. Turn the powered studio monitors (or amplifiers) on.
6. Be sure that the volume of the input is the same
as it would be during normal use.
7. Engage the desired input source select and monitor
select switches.
8. Slowly bring up the volume knob to a comfortable
listening level.
IMPORTANT SAFETY INSTRUCTIONS ...............................................2
TABLE OF CONTENTS ........................................................................3
BIG KNOB PASSIVE FEATURES .........................................................3
INTRODUCTION ...............................................................................3
QUICK START ...................................................................................3
HOOKUP DIAGRAM .........................................................................4
REAR PANEL DESCRIPTION .............................................................5
1. 1/4" SOURCE INPUTS......................................................5
2. 1/8" STEREO LINE INPUT ................................................5
3. MON OUTPUTS ................................................................5
FRONT PANEL DESCRIPTION ............................................................6
4. SOURCE SELECT SWITCH .................................................6
5. MONITOR SELECT SWITCH ..............................................6
6. MONO SWITCH ...............................................................6
7. MUTE SWITCH ................................................................6
8. DIM SWITCH ...................................................................6
9. VOLUME KNOB [AKA BIG KNOB] ....................................6
APPENDIX A: SERVICE INFO ............................................................7
TROUBLESHOOTING / REPAIR .............................................7
APPENDIX B: TECHNICAL INFORMATION .........................................8
BIG KNOB PASSIVE SPECIFICATIONS .......................................8
BIG KNOB PASSIVE DIMENSIONS ............................................9
BIG KNOB PASSIVE BLOCK DIAGRAM ...................................10
BIG KNOB PASSIVE LIMITED WARRANTY ......................................11
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