Headphone Amplifier - API The BOX Operator's Manual

API "The BOX"

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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Operator's Manual