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Commercial Audio Series
180MA
Operation Manual
1160MA
280MA
Obtaining Other Language Versions: To obtain information in another language about the use of this product, please contact your
local Crown Distributor. If you need assistance locating your local distributor, please contact Crown at 574-294-8000.
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 installation, operati
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Commercial Audio Series Mixer-Amplifiers Important Safety Instructions 1) Read these instructions. 15) WARNING: TO REDUCE THE RISK OF FIRE MAGNETIC FIELD 2) Keep these instructions. OR ELECTRIC SHOCK, DO NOT EXPOSE CAUTION! Do not locate sensitive high-gain equip- 3) Heed all warnings. THIS APPARATUS TO RAIN OR MOISTURE. ment such as preamplifiers or tape decks directly 4) Follow all instructions. 16) DO NOT EXPOSE TO DRIPPING OR SPLASH- above or below the unit. Because this amplifier has 5)
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Commercial Audio Series Mixer-Amplifiers Crown International, Inc. DECLARATION of CONFORMITY Issued By: Crown International, Inc. FOR COMPLIANCE QUESTIONS ONLY: Sue Whitfield 1718 W. Mishawaka Road 574-294-8289 Elkhart, Indiana 46517 U.S.A. swhitfield@crownintl.com European Representative’s Name and Address: Nick Owen 35, Bassets Field Thornhill Cardiff. South Glamorgen CF14 9UG United Kingdom Equipment Type: Commercial Audio Mixer-Amplifiers F
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Commercial Audio Series Mixer-Amplifiers Table of Contents Important Safety Instructions .......................................................2 2.11 Powering Up...................................................................12 Declaration of Conformity ............................................................3 2.12 Included Accessories......................................................12 1 Welcome ..............................................................................
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Commercial Audio Series Mixer-Amplifiers *1 kHz 180MA Power Minimum guaranteed power into 4 ohms or 70V/100V output 80W *1 kHz Power: refers to maximum power in watts at 1 kHz with 0.5% THD. 1.1 Features � Any input can be sent to any output 1 Welcome *1 kHz � Priority muting 280MA Power � 4 to 8 inputs, 1 to 2 amplifier output chan- ® The Crown 180MA, 280MA and 1160MA are nels � Advanced protection system includes output Minimum guaranteed power high-value mixer-amplifiers for commercial
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Commercial Audio Series Mixer-Amplifiers 1 Welcome 1.2 Front Panel Controls and Indicators E. Clip Indicator Red LED, one per output channel, illuminates at thresh- A. Input Signal Presence Indicator old of audible distortion. Does not respond to signals Green LED, one for each input channel, illuminates when from the AMP INPUT connector. input signal exceeds –24 dBu (line) or –70 dBu (mic). F. Power Indicator B. Input Volume Controls Blue LED indicates power on. Microphone/line, four in 180
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Commercial Audio Series Mixer-Amplifiers 1 Welcome 1.3 Back Panel Controls and Connectors T. Priority Connector M. Amp Config Switch P. Mic/Line Input Connector 3-pin Phoenix-type connector allows Input 1 or Input 5 J. Reset Switch A DIP switch with two functions: 3-pin Phoenix-type, balanced, one per input channel. (280MA only) to mute other input signals by contact clo- Resets the circuit breaker that protects the power supply. 1. Assigns one of the inputs as the priority input for each sure
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Commercial Audio Series Mixer-Amplifiers 2 Setup 2.1 Installation 2.2 How to Attach Rack Ears CAUTION: Before you begin, make sure your 1. Locate the two rack ears and two rack-ear screws mixer-amplifier is disconnected from the supplied. power source, with the power switch in the 2. See Figure 2.2. Remove the two screws from each “off” position and all level controls turned side of the chassis near the front. completely down (counterclockwise). 3. Place a rack ear flush with the right fron
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Commercial Audio Series Mixer-Amplifiers 2 Setup 2.3 Choose Input Wire and Connectors Crown recommends using pre-built or professionally wired bal- anced line (two-conductor plus shield), 22-24 gauge cables and Figure 2.3 Balanced Input connectors. You should use 3-pin Phoenix-type cable ends at the Connector Wiring amplifier inputs. Unbalanced line may also be used but may result in noise over long cable runs. MIXER-AMP INPUT Figure 2.3 shows connector pin assignments for balanced wir- ing,
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Commercial Audio Series Mixer-Amplifiers 2 Setup 2.5 Wire Your System Typical input and output wiring is shown in Figure 2.7 INPUTS: Connect microphones or balanced line-level sources to mixer-amplifier balanced inputs. Set Mic/Line switches accordingly. Connect unbalanced line-level sig- Ceiling Speakers LM-301A nals to RCA input connectors. OUTPUTS: Maintain proper polarity (+/–) on output con- nectors. For each amplifier channel, connect the Amplifier Output LM-201 screw terminals to the l
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Commercial Audio Series Mixer-Amplifiers 2.6 Input Routing One DIP-switch selection enables Channel 1 as the priority input, which To give priority to the Channel-1 input in Amp 1 and Amp 2: mutes all other inputs to Amp 1. In the 280MA only, another DIP switch Set the AMP CONFIG DIP switch as follows: In the 280MA, any input can be assigned to Amp 1, Amp 2 or both. The selection enables Channel 5 as the priority input, which mutes all other 1 OFF two DIP switches labeled INPUT ROUTING are us
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Commercial Audio Series Mixer-Amplifiers 2 Setup 2.10 Remote Volume Control 2.11 Powering Up 1. Turn off any equipment connected to the Line Out connectors. You can control the volume of each amplifier channel remotely. To do so, 2. Plug the amplifier’s power cord into a 3-wire grounded AC outlet. locate the OUTPUT VCA connector on the back panel. Insert a 4-pin Phoe- 3. Turn down the input volume controls. nix-type cable connector into the OUTPUT VCA connector. Wire a Crown 4. Turn down the m
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Commercial Audio Series Mixer-Amplifiers 2 Setup 2.14 Block Diagram 280MA Block Diagram Pre-Announce Gain Phantom Powe r Pre-Announce Version 1.0 Pre-Announce Input Gain Preamp Line Out 1 Chim e Line SPI 1 Clip 1 AMP Out 1 Mic/Line Mi c [Bal] Ch 1 Priority 100V SP I Output Link Ou t [SW2] Power 70V Transformer In VCA AMP 1 VC A HP Filter CH 1 Tone Control 4 Ohms COM Ch 1 Normal Amp Input 1 [SW1] Ch 1 to Amp 1 RCA Limiter
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Commercial Audio Series Mixer-Amplifiers 3 Troubleshooting CONDITION: No sound. CONDITION: No power to the mixer-amplifier. POSSIBLE REASON: POSSIBLE REASON: � The amplifier is in “fault” mode. A Fault status can be triggered when one of the amplifier’s � The mixer-amplifier’s Power switch is off. protection circuits is activated. First disconnect your speakers from the affected channel(s) one � The mixer-amplifier is not plugged into the power receptacle. by one to determine if one of the
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Commercial Audio Series Mixer-Amplifiers 4 Specifications Minimum Guaranteed Power 180MA 280MA 1160MA 120 VAC, 60 Hz Units, per channel, all channels driven 1 kHz with 0.5% THD Minimum guaranteed power per channel into 4 ohms or 70V/100V output 80W 80W 160W Performance 180MA 280MA 1160MA Number of input channels 4 8 4 Number of power amplifiers 1 2 1 Input Sensitivity (volts RMS) for full output at maximum gain 3 m
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Commercial Audio Series Mixer-Amplifiers 5 Service Crown amplifiers are quality units that rarely require ser- ber to transport the unit in the original factory pack. A list 4. Use a bold black marker and write the SRA number vicing. Before returning your unit for servicing, please on three sides of the box. of authorized service centers in your area can be obtained Cardboard contact Crown Technical Support to verify the need for from Crown Factory Service, or online from 5. Record the SRA nu
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Commercial Audio Series Mixer-Amplifiers 6 Warranty UNITED STATES & CANADA SUMMARY OF WARRANTY to the actual purchase price, not including inter- PRODUCT. THIS INCLUDES ANY DAMAGE TO est, insurance, closing costs, and other finance ANOTHER PRODUCT OR PRODUCTS RESULT- Crown International, 1718 West Mishawaka Road, charges less a reasonable depreciation on the ING FROM SUCH A DEFECT. SOME STATES DO Elkhart, Indiana 46517-4095 U.S.A. warrants to product from the date of original purchase. War-
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Commercial Audio Series Mixer-Amplifiers 6 Warranty WORLDWIDE EXCEPT USA & CANADA SUMMARY OF WARRANTY WHAT THE WARRANTOR WILL DO DISCLAIMER OF CONSEQUENTIAL AND INCIDENTAL DAMAGES Crown International, 1718 West Mishawaka Road, We will remedy any defect, regardless of the rea- Elkhart, Indiana 46517-4095 U.S.A. warrants to son for failure (except as excluded), by repair, YOU ARE NOT ENTITLED TO RECOVER FROM US you, the ORIGINAL PURCHASER and ANY SUB- replacement, or refund. We may not elect
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Commercial Audio Series Mixer-Amplifiers PRODUCT REGISTRATION Crown Audio, Inc. 1718 W. Mishawaka Rd. Elkhart, IN 46517-9439 Phone: 574-294-8000 Fax: 574-294-8329 www.crownaudio.com Online registration is also available at http://crownweb.crownintl.com/webregistration. Warranty is only valid within the country in which the product is purchased. When this form is used to register your product, it may be mailed or faxed. Crown Audio, Inc.
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