Connect the appropriate POWER OUTPUT voltage terminal to the "+" (HIGH) leg and the "0" terminal to the
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 
(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
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 
terminal with an 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 OVERL. 300mA terminal is active whenever 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.
The OVERL. GND terminal on the COMMANDS terminal strip is the common connection point for OVERL. 300mA.
AC Protection Fuse protects the power supply and amplifier circuitry. Replace only with same type fuse.
Connect the supplied AC linecord to the IEC AC 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.
The VOLTAGE SELECTOR switch is used to 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).
The H.P. switch activates a
The L.P. switch activates a
UNBALANCED IN is an RCA jack that can be 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.
PARALLEL OUT is an RCA jack that is in parallel with the UNBALANCED IN jack for connecting to the input of another power amplifier.
The SENSITIVITY switch adjusts the input sensitivity of the UNBALANCED IN from 0 dB (typical
+ | POWER INPUT | D.C. FUSE |
24V D.C. | - |
115 | VOLTAGE |
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LINE |
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POWER OUTPUTS | POWER OUTPUTS | INPUT | COMMANDS |
0 | 50V | 70V | 100V | 0 | 4 | 25V | PRIORITY | GND | STAND | GND OVERL. GND |
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| BY | 300mA. |
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CAUTION |
| WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT |
| SERIAL NUMBER | MANUFACTURING DATE |
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| EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE. DO NOT REMOVE COVER. |
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RISK OF ELECTRIC SHOCK |
| NO USER SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED PERSONNEL. |
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DO NOT OPEN |
| AVIS: RISQUE DE CHOC ELECTRIQUE — NE PAS OUVRIR |
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REPLACE WITH THE SAME TYPE FUSE AND RATING. | UTILISE UN FUSIBLE DE RECHANGE DE MÊME TYPE. |
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DISCONNECT SUPPLY CORD BEFORE CHANGING FUSE | DEBRANCHER AVANT DE REMPLACER LE FUSIBLE |
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CONCEIVED, DESIGNED, AND MANUFACTURED BY MACKIE INDUSTRIAL • MADE IN ITALY • PATENTS PENDING • COPYRIGHT ©1999 |
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THE FOLLOWING ARE TRADEMARKS/REGISTERED TRADEMARKS OF MACKIE DESIGN INC.: "MACKIE", "MACKIE INDUSTRIAL", & THE "RUNNING MAN" FIGURE | ON |
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SENSITIVITY
20dB
0dB
UP4000 – 5
