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.
Commercial Audio Series Mixer-Amplifiers Important Safety Instructions 1) 2) 3) 4) 5) 6) 7) 8) 9) 10) 11) 12) 13) 14) page 2 Read these instructions. Keep these instructions. Heed all warnings. Follow all instructions. Do not use this apparatus near water. Clean only with a dry cloth. Do not block any ventilation openings. Install in accordance with the manufacturer’s instructions.
Commercial Audio Series Mixer-Amplifiers DECLARATION of CONFORMITY Crown International, Inc. Issued By: Crown International, Inc. 1718 W. Mishawaka Road Elkhart, Indiana 46517 U.S.A. FOR COMPLIANCE QUESTIONS ONLY: Sue Whitfield 574-294-8289 swhitfield@crownintl.com European Representative’s Name and Address: Nick Owen 35, Bassets Field Thornhill Cardiff.
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 ................................................................................5 2.
Commercial Audio Series Mixer-Amplifiers 180MA Minimum guaranteed power into 4 ohms or 70V/100V output *1 kHz Power 80W *1 kHz Power: refers to maximum power in watts at 1 kHz with 0.5% THD. 280MA Minimum guaranteed power per channel into 4 ohms or 70V/100V output *1 kHz Power 80W *1 kHz Power: refers to maximum power in watts at 1 kHz with 0.5% THD. 1 Welcome 1.1 Features The Crown® 180MA, 280MA and 1160MA are high-value mixer-amplifiers for commercial and industrial audio.
Commercial Audio Series Mixer-Amplifiers 1 Welcome 1.2 Front Panel Controls and Indicators A. Input Signal Presence Indicator Green LED, one for each input channel, illuminates when input signal exceeds –24 dBu (line) or –70 dBu (mic). B. Input Volume Controls Microphone/line, four in 180MA and 1160MA, eight in 280MA. Detented potentiometers with knobs. C. Output Volume Controls One per output channel. Detented potentiometer with knob. D.
Commercial Audio Series Mixer-Amplifiers 1 Welcome 1.3 Back Panel Controls and Connectors J. Reset Switch Resets the circuit breaker that protects the power supply. 220/230/240V units have a fuse instead. K. Auxiliary Power Input 2-position terminal strip for 24 VDC (±10%) backup power. Accepts up to 10 AWG terminal forks. NOTE: To prevent a spark when attaching a battery, have unit turned on and connected to the mains supply. L.
Commercial Audio Series Mixer-Amplifiers 2 Setup 2.1 Installation 2.2 How to Attach Rack Ears CAUTION: Before you begin, make sure your mixer-amplifier is disconnected from the power source, with the power switch in the “off” position and all level controls turned completely down (counterclockwise). 1. Locate the two rack ears and two rack-ear screws supplied. 2. See Figure 2.2. Remove the two screws from each side of the chassis near the front. 3.
Commercial Audio Series Mixer-Amplifiers 2 Setup 2.3 Choose Input Wire and Connectors Crown recommends using pre-built or professionally wired balanced line (two-conductor plus shield), 22-24 gauge cables and connectors. You should use 3-pin Phoenix-type cable ends at the amplifier inputs. Unbalanced line may also be used but may result in noise over long cable runs. Figure 2.3 shows connector pin assignments for balanced wiring, and Figure 2.4 shows connector pin assignments for unbalanced wiring.
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 signals to RCA input connectors. Ceiling Speakers LM-301A OUTPUTS: Maintain proper polarity (+/–) on output connectors. For each amplifier channel, connect the Amplifier Output screw terminals to the loudspeaker loads.
Commercial Audio Series Mixer-Amplifiers 2.6 Input Routing In the 280MA, any input can be assigned to Amp 1, Amp 2 or both. The two DIP switches labeled INPUT ROUTING are used (Figure 2.8). Follow the settings printed on the back panel next to the INPUT ROUTING switch. For example, to send input Channel 3 to Amp 1 and Amp 2, turn on DIP switches 13 and 14. One DIP-switch selection enables Channel 1 as the priority input, which mutes all other inputs to Amp 1.
Commercial Audio Series Mixer-Amplifiers 2 Setup 2.10 Remote Volume Control 2.11 Powering Up You can control the volume of each amplifier channel remotely. To do so, locate the OUTPUT VCA connector on the back panel. Insert a 4-pin Phoenix-type cable connector into the OUTPUT VCA connector. Wire a Crown 1-VCAP or 4-VCAP level control to the Phoenix-type cable connector terminals as shown in Figure 2.11. 1. Turn off any equipment connected to the Line Out connectors. 2.
Commercial Audio Series Mixer-Amplifiers 2 Setup 2.14 Block Diagram 280MA Block Diagram Phantom Powe r Mic/Line [Bal] Pre-Announce Input Gain Line Mi c Pre-Announce Gain Preamp Line Out 1 SPI 1 Clip 1 AMP Out 1 Ch 1 Priority [SW2] SPI CH 1 Version 1.
Commercial Audio Series Mixer-Amplifiers 3 Troubleshooting CONDITION: No power to the mixer-amplifier. POSSIBLE REASON: • The mixer-amplifier’s Power switch is off. • The mixer-amplifier is not plugged into the power receptacle. • The mixer-amplifier’s high-voltage power supply circuit breaker has tripped, or the fuse has opened on 220/230/240V models. Verify that the AC mains voltage is correct, then press the Reset button on the back panel.
Commercial Audio Series Mixer-Amplifiers 4 Specifications Minimum Guaranteed Power 180MA 280MA 1160MA 80W 80W 160W 120 VAC, 60 Hz Units, per channel, all channels driven 1 kHz with 0.
Commercial Audio Series Mixer-Amplifiers 5 Service Crown amplifiers are quality units that rarely require servicing. Before returning your unit for servicing, please contact Crown Technical Support to verify the need for servicing. ber to transport the unit in the original factory pack. A list of authorized service centers in your area can be obtained from Crown Factory Service, or online from http://www.crownaudio.com/support/servcent.htm.
Commercial Audio Series Mixer-Amplifiers 6 Warranty UNITED STATES & CANADA SUMMARY OF WARRANTY Crown International, 1718 West Mishawaka Road, Elkhart, Indiana 46517-4095 U.S.A. warrants to you, the ORIGINAL PURCHASER and ANY SUBSEQUENT OWNER of each NEW Crown product, for a period of three (3) years from the date of purchase by the original purchaser (the “warranty period”) that the new Crown product is free of defects in materials and workmanship.
Commercial Audio Series Mixer-Amplifiers 6 Warranty WORLDWIDE EXCEPT USA & CANADA SUMMARY OF WARRANTY WHAT THE WARRANTOR WILL DO Crown International, 1718 West Mishawaka Road, Elkhart, Indiana 46517-4095 U.S.A.
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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Commercial Audio Series Mixer-Amplifiers Crown Audio Factory Service Information Shipping Address: Crown Audio Factory Service, 1718 W. Mishawaka Rd., Elkhart, IN 46517 PLEASE PRINT CLEARLY SRA #: __________________(If sending product to Crown factory service.
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