Aviom AN-16/i-M - Manual (Page 22)

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present, one LED to display when signal levels reach a point that is 10dB from
maximum level, and another used to indicate that the input to a channel is
causing audio clipping.
The lower LED, marked Signal, will light as long as an audio signal of at least
‑40dB is present on the channel. It provides an easy way to confirm that audio
is indeed passing into—and being processed by—the AN‑16/i‑M.
The center LED lights when audio signals reach a level that is within 10dB of
the maximum level before clipping.
The upper LED is marked Clip. It lights when input signal levels exceed the
maximum of 0dB. If the Clip LED is lighting frequently, you should lower the
level of the audio source using the AN‑16/i‑M Gain knob.
Phantom Power Switch
Phantom power is provided for condenser mics on each channel. Engaging
the Phantom Power switch for a channel delivers +48 volts to the XLR jack
on the rear panel of the AN‑16/i‑M. The LED lights to indicate that phantom
power is on.
P N
ote
: Avoid using phantom power with line‑level devices.
Use caution when activating phantom power to avoid damage to ribbon
microphones, for example.
Gain Knob
Each channel has a rotary Gain knob with variable gain. Two gain ranges are
available, one for mic‑level signals connected via the XLR jack and another
for line‑level signals connected to the TRS balanced inputs on the rear panel
combo jacks.
The XLR input has a gain range of +6dB to +60dB. The TRS input gain range is
from ‑15dB to +36dB. The XLR input will be most often used with microphone
signals, although it can also accept line‑level signals.
Low Cut Filter (Rolloff)
Below the Gain knob is the Low Cut switch. It provides a low frequency
rolloff at 85Hz that can be used to minimize low frequency artifacts such as
vibration noise and rumble. Press the switch in to engage the rolloff. In the
up position, marked Flat, the low cut filter is not engaged.