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DESCRIPTION
Because of its design, this active headphone amplifier is very easily integrable under the
return of studio furniture, freeing cutouts on the board.
It has two balanced left and right inputs, as well as a talkback input with automatic
program attenuation.
The connection is made using an international standard RJ45 cable, which carries both
audio and power. (otherwise called standard axia)
The extension to other PRF75A modules is via a single RJ45 cable between the "OUT"
output of the first PRF75A to the " INPUT" of the next PRF75A, and so on. The saving of
time in terms of wiring is particularly interesting. The three audio modulations are
distributed as well as the power supply.
The headphone output can be done on the front as well as on the rear panel.
A fugitive MUTE switch very accessible under the module, allows the attenuation of the
audio modulation without changing the volume and without removing the headphones.
BLOCK DIAGRAM
1
8
1
8
0V
Rami
RFI
RFI
L+
L-
RFI
R+
RFI
TB
R-
RFI
V+
Mute
0V
8
0V
+
0V
FRONT
PHONES
REAR
PHONES
PRF75A
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