SR1521Z 2-WAY ACTIVE
LOUDSPEAKER SYSTEM USER’S MANUAL
IMPORTANT SAFETY INSTRUCTIONS
1.Read these instructions.
2.Keep these instructions.
3.Heed all warnings.
4.Follow all instructions.
5.Do not use this apparatus near water.
6.Clean only with dry cloth.
7.Do not block any ventilation openings. Install in accordance with the manufacturer’s instructions.
8.Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat.
9.Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized plug has two blades with one wider than the other. A grounding-type plug has two blades and a third grounding prong. The wide blade or the third prong are provided for your safety. If the provided plug does not fit into your outlet, consult an electrician for replacement of the obsolete outlet.
10.Protect the power cord from being walked on or pinched particularly at plugs, convenience receptacles, and the point where they exit from the apparatus.
11.Only use attachments/accessories specified by the manufacturer.
12.Use only with a cart, stand, tripod, bracket, or table specified by the manufacturer, or sold with the apparatus. When a cart is used, use caution when moving the cart/apparatus combination to avoid injury from tip-over.
PORTABLE CART WARNING
Carts and stands - The Component should be used only with a cart or stand that is recommended by the manufacturer.
A Component and cart combination should be moved with care. Quick stops, excessive force, and uneven surfaces may cause the Component and cart combination to overturn.
CAUTION |
AVIS |
RISK OF ELECTRIC SHOCK |
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DO NOT OPEN |
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RISQUE DE CHOC ELECTRIQUE |
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NE PAS OUVRIR |
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CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK |
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DO NOT REMOVE COVER (OR BACK) |
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NO USER-SERVICEABLE PARTS INSIDE |
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REFER SERVICING TO QUALIFIED PERSONNEL |
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ATTENTION: POUR EVITER LES RISQUES DE CHOC |
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ELECTRIQUE, NE PAS ENLEVER LE COUVERCLE. AUCUN |
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ENTRETIEN DE PIECES INTERIEURES PAR L’USAGER. CONFIER |
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L’ENTRETIEN AU PERSONNEL QUALIFIE. |
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AVIS: POUR EVITER LES RISQUES D’INCENDIE OU |
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D’ELECTROCUTION, N’EXPOSEZ PAS CET ARTICLE |
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A LA PLUIE OU A L’HUMIDITE |
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13.Unplug this apparatus during lightning storms or when unused for long periods of time.
14.Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been damaged in any way, such as powersupply cord or plug is damaged, liquid has been spilled or objects have fallen into the apparatus, the apparatus has been exposed to rain or moisture, does not operate normally, or has been dropped.
15.This apparatus shall not be exposed to dripping or splashing, and no object filled with liquids, such as vases, shall be placed on the apparatus.
16.This apparatus has been designed with Class-I construction and must be connected to a mains socket outlet with a protective earthing connection (the third grounding prong).
17.This apparatus has been equipped with an all-pole, rocker-style AC mains power switch. This switch is located on the rear panel and should remain readily accessible to the user.
18.This apparatus does not exceed the Class A/Class B (whichever is applicable) limits for radio noise emissions from digital apparatus as set out in the radio interference regulations of the Canadian Department of Communications.
ATTENTION— Leprésentappareilnumériquen’émetpasdebruits radioélectriquesdépassantlaslimitesapplicablesauxappareilsnumériquesde classA/declassB(selonlecas)prescritesdansleréglementsurlebrouillage radioélectriqueédictéparlesministeredescommunicationsduCanada.
19.Exposure to extremely high noise levels may cause permanent hearing loss. Individuals vary considerably in susceptibility to noise-induced hearing loss, but nearly everyone will lose some hearing if exposed to sufficiently intense noise for a period of time. The U.S. Government’s Occupational Safety and Health Administration (OSHA) has specified the permissible noise level exposures shown in the following chart.
According to OSHA, any exposure in excess of these permissible limits could result in some hearing loss. To ensure against potentially dangerous exposure to high sound pressure levels, it is recommended that all persons exposed to equipment capable of producing high sound pressure levels use hearing protectors while the equipment is in operation. Ear plugs or protectors in the ear canals or over the ears must be worn when operating the equipment in order to prevent permanent hearing loss if exposure is in excess of the limits set forth here.
DurationPerDay |
SoundLeveldBA, |
Typical |
InHours |
SlowResponse |
Example |
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8 |
90 |
Duoinsmallclub |
692
4 |
95 |
SubwayTrain |
397
2 |
100 |
Veryloudclassicalmusic |
1.5102
1 |
105 |
TamiscreamingatAdrianaboutdeadlines |
0.5110
0.25orless |
115 |
Loudestpartsatarockconcert |
The lightning flash with arrowhead symbol within an equilateral triangle is intended to alert the user to the presence of uninsulated "dangerous voltage" within the product’s enclosure, that may be
of sufficient magnitude to constitute a risk of electric shock to persons.
Le symbole clair avec point de fl che l’int rieur d’un triangle quilat ral est utilis pour alerter l’utilisateur de la pr sence
l’int rieur du coffret de "voltage dangereux" non isol d’ampleur suffisante pour constituer un risque d’ l ctrocution.
The exclamation point within an equilateral triangle is intended to alert the user of the presence of important operating and maintenance (servicing) instructions in the literature accompanying the appliance.
Le point d’exclamation l’int rieur d’un triangle quilat ral est employ pour alerter les utilisateurs de la pr sence d’instructions importantes pour le fonctionnement et l’entretien (service) dans le livret d’instruction accompagnant l’appareil.
WARNING — To reduce the risk of fire or electric shock, do not expose this apparatus to rain or moisture.
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INTRODUCTION
ThankyouforchoosingMackie’s active sound reinforcement loudspeaker systems.
The SR1521z is a high-efficiency, high output, hornloaded, 2-way, wide-dispersion, active sound reinforcement system. The SR1521z benefits from the integration of 500 watts of amplifier power, complete active control electronics, and precision transducer components.
These elements together form a speaker system with unprecedented output, resolution, and clarity.
The 1.75-inch neodymium high-frequency compression driver features a low-distortion optimized symmetric phase plug.
The low frequencies are produced by a high-output 15-inch woofer featuring a 2.5-inch high-temperature voice coil.
Connecting and setting up the SR1521z is a breeze. It accepts a line-level signal via a female XLR input jack. A male XLR Thru jack is provided for daisy-chaining the signal to additional SR1521z cabinets.
Two built-in power amplifiers provide 100 watts rms for the high-frequency driver and 300 watts rms for the low-frequency driver. The amplifier modules sit on a
CONTENTS
mammoth aluminum heatsink that eliminates the need for fans. A tremendous benefit of having the amplifiers located within the loudspeaker cabinet is that the SR1521z functions as a system, optimizing acoustic, electronic, and mechanical designs to achieve the highest level of performance and value.
The rear mounted amplifier assembly features separate signal and AC power panels separated by the heatsink. The signal input panel contains:
•an input XLR and loop-through XLR
•a volume level control
•Power ON indicator
•Signal Present indicator
•Limit indicator
•Thermal Protection indicator
The cabinet is constructed using both 18 mm Baltic birch plywood and pressure injected structural resin. A carrying handle is integrated into each side for easy loading and transport.
IMPORTANTSAFETYINSTRUCTIONS ................................................................................................. |
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INTRODUCTION ........................................................................................................................................ |
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REARPANELDESCRIPTION .................................................................................................................... |
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HOOKUPDIAGRAM.................................................................................................................................. |
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CONNECTIONS .......................................................................................................................................... |
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PLACEMENT ................................................................................................................................................ |
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RoomAcoustics.................................................................................................................................................................. |
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THERMALCONSIDERATIONS ............................................................................................................... |
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ACPOWER .................................................................................................................................................. |
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SERVICEINFORMATION .......................................................................................................................... |
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WarrantyService ................................................................................................................................................................ |
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Troubleshooting ................................................................................................................................................................. |
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Repair .................................................................................................................................................................................... |
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CAREANDMAINTENANCE .................................................................................................................... |
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SR1521zSPECIFICATIONS ........................................................................................................................ |
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SR1521zLIMITEDWARRANTY ............................................................................................................... |
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Don’t forget to visit our website at www.mackie.com |
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for more information about this and other Mackie products. |
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Part No. 0013856 Rev. A 12/04 |
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©2004 LOUD Technologies Inc. All Rights Reserved. Printed in China. |
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REAR PANEL DESCRIPTION
1.MAININPUT
This is a female XLR-type connector that accepts a balanced line-level signal from a mixing console or other signal source.
2.LOOPOUT |
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This is a male XLR-type connector that produces exactly the same signal that is connected to the MAIN INPUT jack. Use it to daisy-chain several SR1521z's together off the same signal source.
3.LevelControl
This controls the overall signal level at the input to the built-in power amplifiers. It ranges from –15 dB to +5 dB of gain. The center detent is 0 dB (unity gain).
4.PowerONIndicator
When the POWER switch is turned on, and the linecord is connected to an active AC power supply, this indicator lights green to let you know that you’re ready to rock and roll. The cool blue LED on the front of the cabinet works in the same way.
5.SIGNALPresentIndicator
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.
6.LIMITIndicator
The SR1521z 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.
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7.THERMALIndicator
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.
8.POWERSwitch
Use this switch to turn the SR1521z on and off. Make sure the level control is turned down before you turn it on.
9.ACReceptacle
This is where you connect the AC linecord to provide AC power to the SR1521z’s built-in power amplifiers. Plug the linecord into an AC socket properly configured for your particular model.
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