Mackie SA1521 Owner's Manual - Page 5

SIGNAL Present Indicator This LED illuminates whenever there is a signal present at the MAIN INPUT connector on the rear panel. It senses the signal just after the Level control, so if the Level control is turned down, the SIGNAL Present indicator turns off. LIMIT Indicator The SA1521 has a built-in limiter that prevents the amplifier outputs from clipping or overdriving the transducers. The LIMIT indicator lights when the limiter is activated. It's okay for the LIMIT indicator to blink occasionally, but if it blinks frequently or lights continuously, turn down the level control until the LIMIT indicator only blinks occasionally. THERMAL Indicator There is also a thermal protection circuit that monitors the internal temperature of the amplifiers and heatsink. If the temperature should exceed a safe operating level, this indicator lights and the signal is muted to allow the amplifiers to cool. When the temperature cools to a safe level once again, the thermal protection circuit deactivates and normal operation continues. Note: Activation of the thermal protection circuit is an indication that you should take steps to avoid continued thermal problems. See "Thermal Considerations" on page 6. Power Switch Use this switch to turn the SA1521 on and off. Make sure the level control is turned down before you turn it on. AC Receptacle This is where you connect the AC linecord to provide AC power for the built-in power amplifiers. Plug the linecord into an AC socket properly configured for your particular model. PARALLEL PARALLEL PARALLEL PARALLEL HOOKUP DIAGRAM DAISY-CHAINING MULTIPLE SA1521s To Next Speaker MAIN INPUT LOOP OUT 0dB SA1521 -15 +5 ACTIVE SOUND REINFORCEMENT SPEAKER SYSTEM CONCEIVED AND DESIGNED BY MACKIE DESIGNS INC, WOODINVILLE, WA, USA AND MACKIE EUROPE • COPYRIGHT ©2001 • THE FOLLOWING ARE TRADEMARKS OR REGISTERED TRADEMARKS OF MACKIE DESIGNS INC.: "MACKIE", AND THE "RUNNING MAN" FIGURE • PATENT PENDING POWER SIGNAL LIMIT THERMAL MAIN INPUT LOOP OUT 0dB SA1521 -15 +5 ACTIVE SOUND REINFORCEMENT SPEAKER SYSTEM CONCEIVED AND DESIGNED BY MACKIE DESIGNS INC, WOODINVILLE, WA, USA AND MACKIE EUROPE • COPYRIGHT ©2001 • THE FOLLOWING ARE TRADEMARKS OR REGISTERED TRADEMARKS OF MACKIE DESIGNS INC.: "MACKIE", AND THE "RUNNING MAN" FIGURE • PATENT PENDING POWER SIGNAL LIMIT THERMAL Left Line level Output Right Line level Output 1202-VLZ PRO MAIN INPUT LOOP OUT 0dB SA1521 -15 +5 ACTIVE SOUND REINFORCEMENT SPEAKER SYSTEM CONCEIVED AND DESIGNED BY MACKIE DESIGNS INC, WOODINVILLE, WA, USA AND MACKIE EUROPE • COPYRIGHT ©2001 • THE FOLLOWING ARE TRADEMARKS OR REGISTERED TRADEMARKS OF MACKIE DESIGNS INC.: "MACKIE", AND THE "RUNNING MAN" FIGURE • PATENT PENDING POWER SIGNAL LIMIT THERMAL CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN WARNING: THIS SURFACE MAY REACH HIGH TEMPERATURE DURING STANDARD USE. TO ENSURE PROPER OPERATION ALLOW A MINIMUM OF 6 INS. OF CLEARANCE FROM THIS SURFACE AND ADEQUATE VENTILATION. TO REDUCE THE RISK OF ELECTRIC SHOCK DO NOT REMOVE THIS PANEL OR ANY ATTACHED COMPONENT. NO OPERATOR SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED PERSONNEL. TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE. AVIS: RISQUE DE CHOC ELECTRIQUE - NE PAS OUVRIR REPLACE WITH THE SAME TYPE FUSE AND RATING. DISCONNECT SUPPLY CORD BEFORE CHANGING FUSE UTILISE UN FUSIBLE DE RECHANGE DE MÊME TYPE. DEBRANCHER AVANT DE REMPLACER LE FUSIBLE SERIAL NUMBER MANUFACTURING DATE ON POWER 115V AC FUSE AC125V-T6.3A CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN WARNING: THIS SURFACE MAY REACH HIGH TEMPERATURE DURING STANDARD USE. TO ENSURE PROPER OPERATION ALLOW A MINIMUM OF 6 INS. OF CLEARANCE FROM THIS SURFACE AND ADEQUATE VENTILATION. TO REDUCE THE RISK OF ELECTRIC SHOCK DO NOT REMOVE THIS PANEL OR ANY ATTACHED COMPONENT. NO OPERATOR SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED PERSONNEL. TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE. AVIS: RISQUE DE CHOC ELECTRIQUE - NE PAS OUVRIR REPLACE WITH THE SAME TYPE FUSE AND RATING. DISCONNECT SUPPLY CORD BEFORE CHANGING FUSE UTILISE UN FUSIBLE DE RECHANGE DE MÊME TYPE. DEBRANCHER AVANT DE REMPLACER LE FUSIBLE SERIAL NUMBER MANUFACTURING DATE ON POWER 115V AC FUSE AC125V-T6.3A Mixer or Preamplifier CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN WARNING: THIS SURFACE MAY REACH HIGH TEMPERATURE DURING STANDARD USE. TO ENSURE PROPER OPERATION ALLOW A MINIMUM OF 6 INS. OF CLEARANCE FROM THIS SURFACE AND ADEQUATE VENTILATION. TO REDUCE THE RISK OF ELECTRIC SHOCK DO NOT REMOVE THIS PANEL OR ANY ATTACHED COMPONENT. NO OPERATOR SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED PERSONNEL. TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE. AVIS: RISQUE DE CHOC ELECTRIQUE - NE PAS OUVRIR REPLACE WITH THE SAME TYPE FUSE AND RATING. DISCONNECT SUPPLY CORD BEFORE CHANGING FUSE UTILISE UN FUSIBLE DE RECHANGE DE MÊME TYPE. DEBRANCHER AVANT DE REMPLACER LE FUSIBLE SERIAL NUMBER MANUFACTURING DATE ON POWER 115V AC FUSE AC125V-T6.3A MAIN INPUT LOOP OUT 0dB SA1521 -15 +5 ACTIVE SOUND REINFORCEMENT SPEAKER SYSTEM CONCEIVED AND DESIGNED BY MACKIE DESIGNS INC, WOODINVILLE, WA, USA AND MACKIE EUROPE • COPYRIGHT ©2001 • THE FOLLOWING ARE TRADEMARKS OR REGISTERED TRADEMARKS OF MACKIE DESIGNS INC.: "MACKIE", AND THE "RUNNING MAN" FIGURE • PATENT PENDING POWER SIGNAL LIMIT THERMAL To Next Speaker CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN WARNING: THIS SURFACE MAY REACH HIGH TEMPERATURE DURING STANDARD USE. TO ENSURE PROPER OPERATION ALLOW A MINIMUM OF 6 INS. OF CLEARANCE FROM THIS SURFACE AND ADEQUATE VENTILATION. TO REDUCE THE RISK OF ELECTRIC SHOCK DO NOT REMOVE THIS PANEL OR ANY ATTACHED COMPONENT. NO OPERATOR SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED PERSONNEL. TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE. AVIS: RISQUE DE CHOC ELECTRIQUE - NE PAS OUVRIR REPLACE WITH THE SAME TYPE FUSE AND RATING. DISCONNECT SUPPLY CORD BEFORE CHANGING FUSE UTILISE UN FUSIBLE DE RECHANGE DE MÊME TYPE. DEBRANCHER AVANT DE REMPLACER LE FUSIBLE SERIAL NUMBER MANUFACTURING DATE ON POWER 115V AC FUSE AC125V-T6.3A CONNECTIONS The SA1521 has one female XLR input that accepts a balanced line-level signal. When connecting a balanced signal, be sure it's wired per AES (Audio Engineering Society) standards: XLR Hot (+) Pin 2 Cold (-) Pin 3 Shield (Ground) Pin 1 Balanced XLR Connectors 5