Mackie UP4061 Instruction Manual page 5

Connect the appropriate POWER OUTPUT
voltage terminal to the "+" (HIGH) leg and the "0"
terminal to the "–" (LOW) leg of the distributed
speaker system.
The ground ( ) terminal is internally connected
to the chassis and safety ground on the AC linecord.
The PRIORITY terminal activates the priority
function for the BALANCED IN by using an external
normally-open switch to short-circuit the PRIORITY
terminal to the GND (ground) terminal. When the
PRIORITY function is enabled, the UNBALANCED IN
is muted (no signal from the UNBALANCED IN is
transmitted to the outputs).
This GND terminal is the common connection
point for BALANCED IN and PRIORITY.
The BALANCED IN terminals are the main input
for the amplifier and accept a balanced line-level
signal (0 dBu nominal). This input has a priority
function, which mutes the UNBALANCED IN signal
when the PRIORITY terminal is shorted to GND.
The STAND BY terminal is used to turn on the
amplifier with a remote switch.
Note: Standby mode must first be activated by
moving a jumper (J1) on the input board (standby
mode is disabled by default). See "Internal Settings"
on page 8.
When the POWER switch is turned on, the amplifier
goes into standby mode. In this state, the amplifier
is on but signal is not allowed to pass. Shorting the
STAND BY terminal to the GND
external switch causes the amplifier to become fully
operational.
The STANDBY GND terminal on the
COMMANDS terminal strip is the common
connection point for STAND BY.
the amplifier's overload protection circuit is
activated. This provides 18 VDC with a maximum
output capacity of 300mA for driving an auxiliary
relay or indicating LED.
terminal strip is the common connection point for
OVERL. 300mA.
and amplifier circuitry. Replace only with same type
fuse.
Socket. The AC line fuse is contained in the socket,
behind the cover located at the bottom of the
socket. Replace only with same type fuse.
select the AC supply voltage for the amplifier. Move
the switch so the AC line voltage used appears on
the switch (DOWN for 115V, UP for 230V).
balanced and unbalanced inputs, which attenuates
frequencies below 300Hz at 12 dB/octave.
balanced and unbalanced inputs, which attenuates
frequencies above 7kHz at 12 dB/octave.
used instead of the BALANCED IN, or both can be
used with the PRIORITY function, which gives the
BALANCED IN priority over the UNBALANCED IN.
terminal with an
with the UNBALANCED IN jack for connecting to
the input of another power amplifier.
sensitivity of the UNBALANCED IN from 0 dB
(typical line-level signals) to 20 dB (for low-level
signals).
WARNING:
TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT
EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE. DO NOT REMOVE COVER.
NO USER SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED PERSONNEL.
AVIS:
RISQUE DE CHOC ELECTRIQUE — NE PAS OUVRIR
REPLACE WITH THE SAME TYPE FUSE AND RATING. UTILISE UN FUSIBLE DE RECHANGE DE MÊME TYPE.
DISCONNECT SUPPLY CORD BEFORE CHANGING FUSE DEBRANCHER AVANT DE REMPLACER LE FUSIBLE
The OVERL. 300mA terminal is active whenever
The OVERL. GND terminal on the COMMANDS
AC Protection Fuse protects the power supply
Connect the supplied AC linecord to the IEC AC
The VOLTAGE SELECTOR switch is used to
The H.P. switch activates a high-pass filter on the
The L.P. switch activates a low-pass filter on the
UNBALANCED IN is an RCA jack that can be
PARALLEL OUT is an RCA jack that is in parallel
The SENSITIVITY switch adjusts the input
UP4000 – 5