Aurora Audio Sidecar, Руководство пользователя, Страница: 6 / 21

The D.I Input On The Front Of The Channel Modules:
If you plug a mono source, like a guitar, bass, or synthesizer into
the 1/4” jack on an Aurora Sidecar channel, it will cut the XLR
source to the channel and select this DI source automatically.
The XLR source can remain connected, but it will not be in
circuit until the jack is removed from the DI input.
The input impedance to the DI input is 10MΩ, that is ten million
ohms. To the device plugged into that input it may just as well be
an open circuit, like the guitar cable is unplugged and laying on
the floor, because the pick up will so lightly loaded that every
single nuance of sound gathered by that pick-up will be caught
and amplified by the Aurora Sidecar channel module.
The channel has a gain range of 90dB with signals from +10dBu to -80dBu and has over
26dB headroom on correctly set gains.
Setting Up The Channel For The Correct Gain Structure:
At the top of each channel is an illuminated VU meter that reads the post fader channel
output level. With the channel fader set to 0dB and the equalizer switched out, the red
gain knob can be turned clockwise from the +10dB position while a microphone or DI
input is connected and spoken/played at the anticipated level. Continue to turn the red
gain knob until the VU meter needle is just above or below the red 0VU to +3VU
region.
The Penny + Giles (P&G) fader has 10dB gain at the top of its travel to fine tune any
levels that fall between the 10dB gain steps. The channel gain is now correctly set for
that source.
For maximum headroom, this procedure of matching gain to input level is traditionally
seen as a proper way to set levels. To overdrive the channel, increase the gain on the red
gain knob and lower the fader to desired recording levels. This procedure will not hurt
the circuitry of the Aurora Sidecar preamp.
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