Commercial Audio Series 140MPA Operation Manual 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, operation or maintenance.
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 3 Operation .................................................... 13 Declaration of Conformity ............................................................3 3.1 Powering Up......................................................................13 1 Welcome ................................................................................5 3.2 Priority Ducking ...
Commercial Audio Series Mixer-Amplifiers 140MPA Minimum guaranteed power into 4 ohms or 25V/70V output *1 kHz Power 40W *1 kHz Power: refers to maximum power in watts at 1 kHz with 0.5% THD. 1 Welcome 1.1 Features T he Crown® 140MPA is a high-value mixeramplifier for commercial audio. It provides 4ohm and constant-voltage outputs (25V and 70V). Typical uses are paging, background music, and music-on-hold.
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 –40 dBu. D. Output Signal Presence Indicator: Green LED illuminates when output signal level exceeds 100 mV (45 dB below full power) from the 4-ohm tap. E. Clip Indicator: Red LED on output illuminates at threshold of audible distortion. B. Input Volume Controls: Four controls, one per input.
Commercial Audio Series Mixer-Amplifiers 1 Welcome 1.3 Back Panel Controls, Connectors and Indicators P. Music-On-Hold Section MOH 1V Level Control: Trim pot adjusts level for Music-On-Hold 1V output. T. Input 1 Section J. Reset Switch: Resets the circuit breaker that protects the power supply. MOH 1W Level Control: Trim pot adjusts level for Music-On-Hold 1W output. Dual RCA Input Connector: For stereo music signals, unbalanced, summed together. K.
Commercial Audio Series Mixer-Amplifiers 2 Setup 2.1 Installation 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). Use a standard 19-inch (48.3 cm) equipment rack (EIA RS-310B). See Figure 2.1 for amplifier dimensions.
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. Unbalanced line may also be used but may result in noise over long cable runs. MIC The 140MPA has two types of input connectors: Phoenix-type and RCA. + • Mic/Line Connectors and Amp Input Connectors: 3-pin Phoenix-type, balanced, one per input channel (Figure 2.3).
Commercial Audio Series Mixer-Amplifiers 2 Setup 2.4 Choose Output Wire and Connectors AMPLIFIER OUTPUTS Amplifier Output Connections: Slip the cable lugs under the output screw terminals and tighten (Figure 2.6). Cover the output connections with the supplied non-touch cover. Crown recommends using pre-built or professionally wired, high-quality, two-conductor, heavy gauge speaker wire and connectors. You may use crimp-on spade lugs for your output connectors.
Commercial Audio Series Mixer-Amplifiers 2 Setup 2.5 Wire Your System Typical input and output wiring is shown in Figure 2.10. INPUTS: For Input 1, connect a microphone or balanced line-level signal to the Input 1 balanced input. Set the Mic/Line switch accordingly. Connect unbalanced line-level signals to the RCA input connectors. Satellite Receiver For Inputs 2-4, connect a balanced line-level signal to the balanced input. Connect unbalanced line-level signals to the RCA input connectors.
Commercial Audio Series Mixer-Amplifiers 2 Setup 2.8 Remote Volume Control You can remote-control the output volume of the 140MPA. 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 level control to the Phoenix-type cable connector terminals as shown in Figure 2.12. Output VCA Connector Phoenix-type plug Figure 2.
Commercial Audio Series Mixer-Amplifiers 3 Operation 3.1 Powering Up 1. Turn off any equipment connected to the Line Out connectors. 2. Plug the amplifier’s power cord into a 3-wire grounded AC outlet. 3. Turn down the input volume controls. 4. Turn down the master volume control. 5. Turn on the Power switch. The Power indicator should glow. 6. Turn the input volume controls in use about 3/4 up. 7. Turn up the master volume control(s) until the desired loudness or power level is achieved. 8.
Commercial Audio Series Mixer-Amplifiers 4 Troubleshooting CONDITION: No sound. CONDITION: No power to the mixer-amplifier. POSSIBLE REASON: 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. Verify that the AC mains voltage is correct, then press the Reset button on the back panel. • The amplifier is in “fault” mode.
Commercial Audio Series Mixer-Amplifiers 5 Specifications Minimum Guaranteed Power 1 kHz with 0.
Commercial Audio Series Mixer-Amplifiers 6 Service Crown mixer-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 7 Warranty UNITED STATES & CANADA SUMMARY OF WARRANTY 3 AR YE 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 7 Warranty 3 AR YE 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 International 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 When this form is used to register your product, it may be mailed or faxed. Crown International 1718 W Mishawaka Rd Elkhart IN 46517 Fax: 574-294-8329 Please note that some information is required.
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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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