Biamp 801i - Manual (Page 5)

3
REAR PANEL
DC Power Supply: The included power supply module provides
24 Volt DC power to the mixer. It is connected to the DC Power
Jack on the rear side of the mixer. To ensure compatibility, only
use a Biamp Systems supplied power supply.
Main Output: This plug-in barrier strip provides the balanced line-
level Main Output from the mixer. For balanced connection, wire
high (+), low (-), and ground (
d ). For unbalanced connection, wire
high (+) and ground ( d ), leaving (-) unconnected. Signal level will
be reduced by 6dB when output is unbalanced. Main Output level
is affected by the front panel Master control, as well as by remote
control (see Remote below).
Stack In: This plug-in barrier strip provides the balanced line-level
Stack In to the mixer. Signal entering here is combined with
signals from the input channels, and is then sent to the Main
Output section. When using multiple 801i mixers within a system,
connect Main Output of one mixer to Stack In of the next mixer,
and so forth. All mixers except the final 801i should be assigned
as ‘slaves’ (see Master DIP Switches below). For balanced
connection, wire high (+), low (-), and ground (
d ). For unbalanced
connection, wire high (+) and ground to both ( d ) & (-).
Remote: This plug-in barrier strip provides connection for an
optional remote master level control (model RP-L1) (see Remote
Control on pg. 4). An external potentiometer (5k~50k ohm linear
taper) or external ramp voltage (0~+10VDC) can also be used.
Potentiometers are wired high (V), wiper (C), and low (
d ). Ramp
voltage is wired positive (C), and ground ( d ). The Remote port
must be enabled before remote master level control is possible
(see Master DIP switches below).
Input & Direct Out (Channels 1~8 & Aux): These plug-in barrier
strips provide the balanced mic/line Inputs to the mixer (Channels
1~8 only). For balanced connection, wire high (+), low (-), and
ground (
d ). For unbalanced connection, wire high (+) and ground
to both ( d ) & (-). Phantom power (+24VDC) is available for
condenser microphones (see DIP Switches below). The Aux input
accepts either balanced mono line input or unbalanced stereo line
input (see DIP switches below). Aux input cannot accept mic input
signal, and does not provide phantom power. Unbalanced 'pre-
fader' Direct Outputs are available on Channels 1~8 & Aux, using
the (d. out) & (
d ) terminals.
Master DIP Switches: These switches assign functions to the
mixer as a whole (when pushed up). Slave assigns the mixer as
an expander to a ‘master’ mixer. Tone Out bypasses the front
panel tone controls (Bass & Treble). Override allows automatic
muting of other inputs when signal is present in Channel 1.
Remote allows remote control of Main Output level, by enabling
the Remote terminals (see above).
DIP Switches (Channels 1~8 & Aux): These switches assign
functions to the individual inputs (when pushed up). Pad
attenuates channel signal -18dB (-10dB at Aux) for line input.
Priority disables Channel 1 Override muting for that channel.
Phantom (Channels 1~8 only) turns on phantom power (for
condenser mics). Duck Aux (Channels 1~8 only) allows channel
signal presence to activate -15dB attenuation at Aux input
(ducking). HP Filter enables a high-pass filter on the input
(6dB/octave @ 170Hz). Sum (Aux only) converts Aux from
standard balanced input to stereo (L/R) summing input.