Aviom AV-M8 - Manual (Page 24)

16 Av-M8 M
ic
i
nput
M
odule
u
ser
G
uide
Line-Level Inputs
The AV‑M8’s channels 1 and 2 are designed to accept line‑level audio signals.
Channels 3‑8 may also be used for a line‑level input, but clipping may occur
if the signal level is too hot. If adjusting the input gain setting using the DIP
switches does not eliminate the clipping, use the pad, found on channels 1‑2
only.
The eight inputs on the AV‑M8 are automatically assigned to A‑Net channels
1‑8. When using two AV‑M8 units, audio from the second AV‑M8 is routed to
A‑Net channels 9‑16 when the units are cascaded using the ADAT® optical
connections.
P N
ote
: Do not connect guitars or other high impedance sources to the
AV‑M8 mic‑level inputs. Use a direct box to convert a guitar or bass
pickup’s signal to mic level.
Pad
Channels 1 and 2 feature a pad with an on/off switch. Use the pad when
connecting line‑level audio sources to the AV‑M8. Move the switch to the left
to engage the pad. When engaged, the pad lowers the initial input level by
20dB.
Gain Settings
Each channel’s gain setting can be set individually using the first six DIP
switches in the input strip. Gain setting combinations are silk screened on
the front panel of the AV‑M8 for reference.
The AV‑M8 input has a gain range of +16dB to +64dB (without pad).
Phantom Power Switch
Phantom power for condenser mics is provided on each channel. Engaging
the 48V o
N
DIP switch for a channel delivers +48 Volts to the input jack on
the front panel of the AV‑M8. Move the DIP switch to the up position to
activate the phantom power on a channel.
P N
ote
: Avoid using phantom power with line‑level audio devices. Also,
some ribbon microphones may be damaged by incorrect use of
the phantom power switch. Refer to the documentation that came
with the microphone for additional information.