The I2S output from the Amanero USB module is converted to audio by a Formula
Sound Ltd designed DAC based on Texas PCM1502 integrated circuits.
The output from the Amanero USB module is digitally isolated from the Amanero
USB module reducing any noise from the USB connection (the USB earth is isolated
from the NN106 earth).
The Amanero USB module provides 2 stereo channels, these 2 channels are routed to
all 6 channels of the NN106 and each channel can selects USB stereo 1 or USB
stereo 2 on a recessed switch.
Output Section
Console microphone
The output section includes the 7
th
input, a console microphone, the console
microphone input is on XLR and there is a gain trim and phantom power switch.
The console microphone has a 3 band EQ (not full kill), gain control, MIC ON switch
and CUE. The console microphone is routed directly to the master and is not included
in the booth output.
Headphone monitoring
Any CUE selection on the inputs sends a copy of that input to the headphone section,
if multiple input CUE switches are selected those inputs are summed together.
The CUE/BAL control selects the CUE content or the master signal to be sent to the
headphones (setting the control part way gives a mix of master and CUE signals in
proportion to the position of the control eg mid is 50:50).
The split control gives CUE in the left ear and master signal in the right ear of the
headphones when the CUE/BAL control is in the CUE position.
There are 2 headphone outputs, a stereo ¼” jack socket and a 3.5mm jack socket, the
headphone impedance on each should be no less than 32 Ohms.
The headphone volume control is marked PHONES, the level from the headphones is
also dependent on the settings on the rest of the mixer and of course the level of the
input signal.
Hearing damage is caused by loud sound, the louder the sound the shorter the
length of time to cause permanent hearing damage. Always start with the
PHONES control at a quarter turn and increase as required.
The UK acceptable sound level for employees on an 8 hour shift is 86dB(A).
