Commercial Audio Series 135MA Operation Manual 160MA 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 Wichtige Sicherheitsinstruktionen Importantes Instructions de Sécurité Instrucciones de Seguridad Importantes 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 accordance with the manufacturer’s instructions. 8.
Commercial Audio Series Mixer-Amplifiers Crown International, Inc. DECLARATION OF CONFORMITY Issued By: Crown International, Inc. 1718 W. Mishawaka Rd. Elkhart, IN 46517 U.S.A. TFOR COMPLIANCE QUESTIONS ONLY: Sue Whitfield 574-294-8289 swhitfield@crownintl.com European Representative’s Name and Address: David J.
Commercial Audio Series Mixer-Amplifiers Table of Contents Important Safety Instructions............................................................... 2 Declaration of Conformity .................................................................. 3 1 Welcome ......................................................... 5 1.1 Features ................................................................................. 5 1.2 Front Panel Controls and Indicators ....................................... 6 1.
Commercial Audio Series Mixer-Amplifiers 135MA Minimum guaranteed power into 8 ohms or 70V/100V output *1 kHz Power 35W *1 kHz Power: refers to maximum power in watts at 1 kHz with 0.5% THD. 160MA Minimum guaranteed power into 8 ohms or 70V/100V output *1 kHz Power 60W *1 kHz Power: refers to maximum power in watts at 1 kHz with 0.5% THD. Operation Manual 1 Welcome The Crown® 135MA and 160MA are high-value mixer-amplifiers for commercial audio.
Commercial Audio Series Mixer-Amplifiers 2 Setup 1.2 Front Panel Controls and Indicators A. Input Signal Presence/Clip Indicators: Green LED, one above each channel's volume control, illuminates when input signal exceeds –40 dBu, or flashes brightly at threshold of audible distortion. B. Master Output Volume Control: Detented potentiometer with knob. C. Output Signal Presence Indicator: Green LED above master output volume control illuminates when any input signal exceeds –40 dBu. F.
Commercial Audio Series Mixer-Amplifiers 2 Setup 3. On: CH1 priority contact closure mutes other channels. 4. On: CH1 VOX mutes other channels by sensing signal through Input 1. 5. On: Routes CH1 to MOH output. 6. On: Routes CH2 to MOH output. 7. On: Routes CH3 to MOH output. 8. On: 15V phantom power. F. MOH Level Control: Trim pot adjusts level for Music-On-Hold output from Telephone (MOH) Output Connector. C. Amp Configuration DIP Switch: DIP switch selection for multiple functions.
Commercial Audio Series Mixer-Amplifiers 2 Setup 2.1 Installation 2.2 How to Attach the Unit to a Rack CAUTION: Before you begin, make sure your mixer-amplifier is disconnected from the power source, with power switch in the “off” position and all level controls turned completely down (counterclockwise). 1. Order the optional Rack-Mount Kit from your Crown dealer. Part no. RM1 is a “single rack mount kit” for mounting a single MA unit in a rack. Part no.
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. PRIORITY The 135MA and 160MA have two types of input connectors: Phoenix-type and RCA. • Mic/Line Connector (CH1): 5-pin Phoenix-type, balanced, pins 3, 4 and 5 (Figure 2.3).
Commercial Audio Series Mixer-Amplifiers 2 Setup 2.4 Choose Output Wire and Connectors Amplifier Output Connections: Slip the cable lugs under the output screw terminals and tighten (Figure 2.6). Slide the supplied non-touch cover over the output connections from top to bottom to cover them. 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 2.4 Wire Your System CD player Speakers with 70V transformers Typical input and output wiring is shown in Figure 2.9. INPUTS: For Input 1, connect a microphone or balanced line-level signal to the Input 1 balanced input. Set the Mic/Line switch (DIP switch #1) accordingly. For the other inputs, connect unbalanced line-level signals to the RCA input connectors. OUTPUTS: Maintain proper polarity (+/–) on amplifier output connectors.
Commercial Audio Series Mixer-Amplifiers 3 Operation 3.1 Powering Up 1. Turn off any equipment connected to the Preamp Output connector. 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 power to the mixer-amplifier. CONDITION: No sound. POSSIBLE REASON: POSSIBLE REASON: • The mixer-amplifier’s Power switch is off. • The amplifier is in “fault” mode. A Fault status can be triggered when one of the amplifier’s protection circuits is activated. First disconnect your speakers from the affected channel(s) one by one to determine if one of the loads is shorted.
Commercial Audio Series Mixer-Amplifiers 5 Specifications Mum Guaranteed Guaranteed Minimum Power 1 kHz with 0.5% THD Minimum guaranteed power into 8 ohms or 70V/100V output 135MA 160MA 35W 60W Performance Frequency Reponse (at 1 watt from 8-ohm tap) 50 Hz to 20 kHz ± 1 dB. 19 Hz to 34 kHz +0, –3 dB. Signal to Noise Ratio (ref. to rated power, master volume at minimum) Mic: > 58 dB. Line: > 60 dB. Telephone: > 60 dB. Inputs 2 or 3 (and 4 in 160MA): > 78 dB. THD + N < 0.5% at rated power at 1 kHz.
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. Warranty is only valid within the country in which the product was purchased. This unit has very sophisticated circuitry which should only be serviced by a fully trained technician.
Commercial Audio Series Mixer-Amplifiers 7 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 7 Warranty WORLDWIDE EXCEPT USA & CANADA SUMMARY OF WARRANTY Crown International, 1718 West Mishawaka Road, Elkhart, Indiana 46517-4095 U.S.A.
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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. CUT ON THIS LINE 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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