3 headphone amplifier – API Audio THE BOX User Manual

Page 71

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API “The BOX”

Operator’s Manual

71

11.3 Headphone Amplifier

In addition to the two control room monitor controls, “The Box” is equipped with
separate headphone amplifier and associated controls. The system supports a single
stereo headphone feed to two (2) headphone jacks, one on the rear panel and one
under the armrest. The cue feed is typically routed to the headphones while recording
and the control room source (program bus) is sent while mixing.

The headphone amp is fed from the C/R SOURCE selectors by default. This feed can
be replaced by the output of the cue master by engaging the CUE TO PHONES switch.
To support headphone feeds (cue feeds) while recording, talkback can be added to the
cue master output before it is routed to headphones.




Headphone Jacks


LEVEL: Stereo level control for the headphone amplifier

Stereo level control with one ganged potentiometer

Feeds the HEADPHONES jacks under the arm rest and
on the rear panel

CUE TO PHONES: Routes the cue master outputs to the
headphone amp inputs

Replaces the C/R SOURCE selections as headphone
amp inputs when engaged

Illuminates when engaged

ON: Activates headphone amp outputs

Illuminates when engaged

HEADPHONES: ¼” tip-ring-sleeve headphone jacks

Fed from headphone amp outputs when ON is
engaged in the headphone master

LEFT & RIGHT stereo output

Headphone jack is located under armrest

Second headphone jack on rear panel

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