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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 mainte
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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 3 Operation .................................................... 13 Declaration of Conformity ............................................................3 3.1 Powering Up......................................................................13 1 Welcome ................................................................................5 3.2 Priori
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Commercial Audio Series Mixer-Amplifiers *1 kHz 140MPA Power Minimum guaranteed power into 4 ohms or 25V/70V output 40W *1 kHz Power: refers to maximum power in watts at 1 kHz with 0.5% THD. 1.1 Features 1 Welcome � 4 inputs (each with a volume control), one ® T he Crown 140MPA is a high-value mixer- 40W amplifier output channel amplifier for commercial audio. It provides 4- ohm and constant-voltage outputs (25V and � Ideal for paging, background music, and 70V). Typical uses are paging, b
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Commercial Audio Series Mixer-Amplifiers 1 Welcome 1.2 Front Panel Controls and Indicators D. Output Signal Presence Indicator: Green LED illuminates when output signal level exceeds 100 mV (45 A. Input Signal Presence Indicator: Green LED, dB below full power) from the 4-ohm tap. one for each input channel, illuminates when input sig- E. Clip Indicator: Red LED on output illuminates at nal exceeds –40 dBu. threshold of audible distortion. B. Input Volume Controls: Four controls, one per
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Commercial Audio Series Mixer-Amplifiers 1 Welcome P. Music-On-Hold Section T. Input 1 Section 1.3 Back Panel Controls, Connectors and Indica- MOH 1V Level Control: Trim pot adjusts level for Music-On-Hold 1V tors Balanced Input Connector: Detachable 3-pin Phoenix style connector output. for balanced mic-level or line-level signals. J. Reset Switch: Resets the circuit breaker that protects the power MOH 1W Level Control: Trim pot adjusts level for Music-On-Hold Dual RCA Input Connector: For
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Commercial Audio Series Mixer-Amplifiers 2 Setup 2.1 Installation side walls of the rack should be a minimum of two inches (5.1 cm) away from the mixer-amplifier CAUTION: Before you begin, make sure your sides, and the back of the rack should be a mini- mixer-amplifier is disconnected from the mum of four inches (10.2 cm) from the mixer- power source, with the power switch in the amplifier back panel. “off” position and all level controls turned 2.2 How to Attach Rack Ears completely down (c
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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- MIC anced 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. 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). – �
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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 con- nectors. You may use crimp-on spade lugs for your output con- nectors. To prevent the possibility
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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 2.10. INPUTS: For Input 1, connect a microphone or balanced line-level signal to the Input 1 balanced input. Set the Mic/Line switch accord- ingly. Connect unbalanced line-level signals to the RCA input con- Satellite Receiver nectors. For Inputs 2-4, connect a balanced line-level signal to the balanced input. Connect unbalanced line-level signals to the RCA input con- necto
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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 ter- minals as shown in Figure 2.12. Output VCA Connector Phoenix-type plug Figure 2.12 Wiring a 1-VCAP Level Control to the Output VCA Connector Output VCA C
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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. To
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Commercial Audio Series Mixer-Amplifiers 4 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. [NO GRAPHIC IS NEEDED protection circuits is activated. First disconnect HERE] your speakers from the affected channel(s) one � The mixer-amplifier is not plugged into the power receptacle. by o
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Commercial Audio Series Mixer-Amplifiers 5 Specifications Minimum Guaranteed Power 140MPA 1 kHz with 0.5% THD Minimum guaranteed power into 4 ohms or 25V/70V output 40W Performance Number of input channels 4 Number of power amplifiers 1 Input Sensitivity (volts RMS) for full output at maximum gain 3 mV Balanced mic inputs 800 mV Balanced line inputs 400 mV RCA connectors Frequency Response (at 1 watt from 8-ohm tap, 50 Hz - 15 kHz) ± 1 dB Frequency Respo
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Commercial Audio Series Mixer-Amplifiers 6 Service Crown mixer-amplifiers are quality units that rarely ber to transport the unit in the original factory pack. A list 4. Use a bold black marker and write the SRA number require servicing. Before returning your unit for servic- on three sides of the box. of authorized service centers in your area can be obtained Cardboard ing, please contact Crown Technical Support to verify the from Crown Factory Service, or online from 5. Record the SRA numbe
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Commercial Audio Series Mixer-Amplifiers 7 Warranty UNITED STATES & CANADA SUMMARY OF WARRANTY est, insurance, closing costs, and other finance FROM ANY DEFECT IN THE NEW CROWN charges less a reasonable depreciation on the PRODUCT. THIS INCLUDES ANY DAMAGE TO Crown International, 1718 West Mishawaka Road, product from the date of original purchase. War- ANOTHER PRODUCT OR PRODUCTS RESULT- Elkhart, Indiana 46517-4095 U.S.A. warrants to ranty work can only be performed at our autho- ING FROM S
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Commercial Audio Series Mixer-Amplifiers 7 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 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 Fax: 574-294-8329 1718 W Mish
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