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Inputs

The

accessed through a header on the back.

Level Knobs

All four channels have a

outputs. The

completely mute the channel (over -100dB of attenuation, typically).

Level 1

Channel Signal Lights

All four channels have a signal light which gets brighter as the signal gets louder. The color of

the light indicates the stereo content: blue displays the signal on the left channel, and green

displays the signal on the right channel. The signal light shows the signal post-fader (after the

Level knob). These lights are useful for determining which channels are active at any given

moment. However, they should not be used as precision indicators. For example, the green

lights will appear dimmer than the blue lights at low audio levels and brighter than the blue

lights at louder levels.

Channels 1 and 2: Panning

Channels 1 and 2 each have one input jack and a

signal. Turning the

fading it between the left and right outputs. The

Pan 1

position so you can find the center by feel.

Level 1

The panning curve has been carefully designed to achieve the perception of a sound source

being a consistent distance from the listener as it pans around.

Channels 3 and 4: Stereo inputs

Channels 3 and 4 each have left and right input jacks. Patching a stereo signal into these

jacks will accurately maintain the stereo image as the signal is mixed into the outputs. If you

patch a mono signal into the left jack and nothing into the right jack, the mono signal will

appear on both left and right outputs.

Channel 5: INS header

See INS header section below

Main Outputs

Main Level Knob

The

is turned fully to the left, the outputs are muted. Turning the knob the to right increases the

volume.

Main

Left and Right Output Jacks

The main outputs of the module are the left and right output jacks. The signal level on these

jacks is controlled by the

jacks have a zero-impedance balanced line driver circuit capable of driving long cables. The

jacks are TRS 1/4" (6.35mm) and will output a balanced signal. Using a mono cable with

either jack will disable the balanced circuitry and a mono signal will be output. The switch

must be set to

Stereo TRS/Balanced Switch

The signal will never clip because the

and outputs line-level signals. Thus the overall gain is less than one.

Listen Four

Quarters has four input channels on the front. A fifth stereo channel can be

Level

Listen Four

Quarters is very quiet, so turning the knob all the way down will

Pan

knob to the left or right will place the signal in the stereo field by

Main Level

knob controls the volume of the main left and right output jacks. When knob

Main Level

Balanced

if mono cables are used, or else the right channel will be muted (see

Always flip the switch to Balanced when using mono

(TR) cables, or else the right channel will be muted.

knob. This knob sets the volume which will appear on the

Pan

knob has a small detent in the center

knob and designed to drive line-level equipment. These

section below).

Listen Four Quarters

Page

knob. These channels accept a mono

inputs modular-level signals