Crown Audio 133472-1A manual Crown Technical Support Group, Important Safety Instructions

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The information furnished in this manual does not include all of the details of design, production, or variations of the equipment. Nor does it cover every possible situation which may arise during installa- tion, operation or maintenance. If you need special assistance beyond the scope of this manual, please contact our Technical Support Group.

Crown Technical Support Group

1718 W. Mishawaka Rd., Elkhart, Indiana 46517 U.S.A.

DANGER: This amplifier can produce lethal levels of output power! Be very careful when making connections. Do not attempt to change the output wiring unless AC power has been removed from the amplifier for at least

WARNING:This unit is capable of producing very high sound pressure levels. Continuous exposure to high sound pressure levels can cause permanent hearing impairment or loss. Caution is advised and ear protection recom- mended when playing at high volumes.

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 a dry cloth.

7)Do not block any ventilation openings. Install in accor- dance with the manufacturer’s instructions.

8)Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus 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 is provided for your safety. If the provided plug does not fi t 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, bracket, or table specifi ed by the manufacturer, or sold with the apparatus. When a cart is used, use caution when moving the cart/appara- tus combination to avoid injury from tip-over.

13)Unplug this apparatus during lightning storms or when unused for long periods of time.

14)Refer all servicing to qualifi ed service personnel. Servic- ing is required when the apparatus has been damaged in any way, such as power-supply cord or plug is dam- aged, 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.

TO PREVENT ELECTRIC SHOCK DO

NOT REMOVE TOP OR BOTTOM COVERS.

NO USER SERVICEABLE PARTS

INSIDE. REFER SERVICING TO QUALIFIED

SERVICE PERSONNEL.

ÀPRÉVENIR LE CHOC ÉLECTRIQUE N’ENLEVEZ PAS LES COUVERCLES. IL N’Y A PAS DES PARTIES SERVICEABLE

ÀL’INTÉRIEUR. TOUS REPARATIONS DOIT ETRE FAIRE PAR PERSONNEL

QUALIFIÉ SEULMENT.

The lightning bolt triangle is used to alert the user to the risk of electric shock.

The exclamation point triangle is used to alert the user to important operating or mainte-

Amplifier Application Guide

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Contents Amplifier Application Guide Important Safety Instructions Crown Technical Support GroupTable of Contents Introduction This Chapter ChapterRack Cooling Fan-Assisted ModelsConvection-Only Models Input Connector Wiring System WiringInput Wiring Balanced, Grounded SourceUnbalanced, Grounded Source Twin-Lead Shielded Cable Unbalanced, Floating Source Twin-Lead Shielded CableHum and Buzz Solving Input ProblemsRadio Frequencies RF Balanced vs. Unbalanced Output WiringOutput Connector Wiring Way Binding PostNeutrik Speakon Output Wiring TipsBarrier Block Connector Assembly Insert into Connector Housing Parallel Speaker Impedances Connecting the Speakon plug to the mating connectorAmplifier Load Impedance Parallel Impedances Determining Appropriate Speaker Wire Gauge Loudspeaker ProtectionLoudspeaker Fuse Nomograph Solving Output ProblemsHigh-Frequency Oscillations Distributed Speaker Systems Sub-Sonic CurrentsMulti-way Systems With Expansion Modules Using Low-ImpedanceWhat is Constant Voltage? Active vs. Passive Crossover NetworksCrown Amplifiers In-Depth Fault Status External Circuit Design RJ Jack Wiring and Pin Assignments Optimal System Headrom Fault MonitoringSetting System GainSystem Levels Amplifier LevelTroubleshooting No Power No PowerNo Sound No SoundBad Sound Amp OverheatingBCA EMI Fader FaultEqualization EQ FrequencyIOC OdepPIP PIP2THX Handbook for Sound Engineers The New Audio Cyclope- dia AppendixAudio Systems Technology, Level What the Warrantor will do Items Excluded from this Crown WarrantyHOW to Obtain Warranty Service Disclaimer of Consequential & Incidental DamagesFull Warranty Three Year

133472-1A specifications

Crown Audio 133472-1A is a sophisticated and highly regarded power amplifier designed for professional audio applications. Known for its reliability and high performance, the 133472-1A is favored by sound engineers, musicians, and event organizers who seek exceptional audio clarity and robust amplification.

One of the standout features of the Crown Audio 133472-1A is its impressive power output. This amplifier is capable of delivering substantial wattage, ensuring that it can effortlessly drive a variety of loudspeaker systems without distortion, even at high volumes. This makes it particularly suitable for large venues, concerts, and public gatherings where sound coverage is critical.

The 133472-1A utilizes advanced technologies to enhance its performance. For instance, it incorporates a patented output stage design that minimizes distortion, allowing for a cleaner and more accurate sound reproduction. This is especially important in professional audio environments where audio fidelity is paramount. Additionally, the amplifier features sophisticated thermal management systems that prevent overheating, ensuring reliable operation during extended use.

Another key characteristic of the Crown 133472-1A is its versatility. It is engineered to work seamlessly with a range of audio sources, making it an ideal choice for various applications, including live performances, installations, and broadcasting. Its multiple input options, including XLR and TRS connectors, allow for flexible connectivity options, accommodating various audio setups.

Durability is also a significant aspect of the Crown Audio 133472-1A. Constructed with high-quality materials and robust components, this amplifier is built to withstand the rigors of professional use. Its rugged chassis design provides added protection, making it suitable for both touring and fixed installations.

Furthermore, the Crown 133472-1A offers user-friendly features such as intuitive controls and indicators, allowing users to monitor performance easily. This includes LED status indicators that provide real-time feedback on operation, making it simple to troubleshoot any issues.

In summary, the Crown Audio 133472-1A is a powerhouse amplifier that combines high output, advanced technologies, and durable construction. Its versatility makes it a preferred choice for professionals seeking reliable and superior audio performance in live and installed environments. Whether for music events, speeches, or any high-stakes audio requirements, the 133472-1A delivers the quality and performance essential for exceptional sound.
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