Summary of the content on the page No. 1
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 ma
Summary of the content on the page No. 2
Commercial Audio Series Mixer-Amplifi ers Important Safety Instructions Wichtige Sicherheitsinstruktionen Importantes Instructions de Sécurité Instrucciones de Seguridad Importantes IMPORTANT Commercial Audio Series mixer-amplifi ers require Class 2 output 1. Read these instructions. wiring. TO PREVENT ELECTRIC SHOCK DO NOT REMOVE TOP OR 2. Keep these instructions. BOTTOM COVERS. NO USER SERVICEABLE PARTS INSIDE. Les amplifi cateurs de série de Commercial Audio exigent des câbles 3. Heed all war
Summary of the content on the page No. 3
Commercial Audio Series Mixer-Amplifi ers Crown International, Inc. DECLARATION OF CONFORMITY Issued By: Crown International, Inc. TFOR COMPLIANCE QUESTIONS ONLY: Sue Whitfi eld 1718 W. Mishawaka Rd. 574-294-8289 Elkhart, IN 46517 U.S.A. swhitfi eld@crownintl.com European Representative’s Name and Address: David J. Budge 10 Harvest Close Yateley GU46 6YS United Kingdom Equipment Type: Commercial Audio Mixer-Amplifi ers Family Name: Commercial Audio Family
Summary of the content on the page No. 4
Commercial Audio Series Mixer-Amplifi ers 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 ............................
Summary of the content on the page No. 5
Commercial Audio Series Mixer-Amplifi ers * 1 kHz 1 Welcome 135MA Power ® 1.1 Features The Crown 135MA and 160MA are Minimum guaranteed power high-value mixer-amplifi ers for com- � 3 inputs (each with a volume control), into 8 ohms or 70V/100V output mercial audio. They provide 8-ohm 35W and constant-voltage outputs (70V and and one 35W amplifi er output channel in 135MA 100V). Typical uses are paging, back- *1 kHz Power: refers to maximum power in watts at ground music, and music-on-ho
Summary of the content on the page No. 6
Commercial Audio Series Mixer-Amplifi ers 2 Setup 1.2 Front Panel Controls and Indica- C. Output Signal Presence Indicator: Green F. Input Volume Controls: One per input, tors LED above master output volume control detented potentiometers with knobs. Four illuminates when any input signal exceeds controls in 160MA; three controls in 135MA. A. Input Signal Presence/Clip Indica- –40 dBu. tors: Green LED, one above each channel's G. Tone Controls: Bass and Treble non- volume control, illuminates
Summary of the content on the page No. 7
Commercial Audio Series Mixer-Amplifi ers 2 Setup 1.3 Back Panel Controls, Connectors F. MOH Level Control: Trim pot adjusts level 3. On: CH1 priority contact closure mutes and Indicators other channels. for Music-On-Hold output from Telephone (MOH) Output Connector. 4. On: CH1 VOX mutes other channels by A. AC Power Inlet: Detachable IEC accepts sensing signal through Input 1. US or Euro style power cords. G. Telephone (MOH) Output Connector: 5. On: Routes CH1 to MOH output. 4-terminal Ph
Summary of the content on the page No. 8
Commercial Audio Series Mixer-Amplifi ers 2 Setup 2.1 Installation 2.2 How to Attach the Unit to a Rack CAUTION: Before you begin, make sure 1. Order the optional Rack-Mount Kit from your your mixer-amplifi er is disconnected from Crown dealer. Part no. RM1 is a “single rack mount the power source, with power switch in the kit” for mounting a single MA unit in a rack. Part “off” position and all level controls turned no. RM2 is a “double rack mount kit” for mounting completely down (countercl
Summary of the content on the page No. 9
+ + Commercial Audio Series Mixer-Amplifi ers 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 connectors. Unbalanced line may also be used but may result in PRIORITY noise over long cable runs. 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). � Dual RCA I
Summary of the content on the page No. 10
Commercial Audio Series Mixer-Amplifi ers 2 Setup 2.4 Choose Output Wire and Connectors Amplifi er Output Connections: Slip the cable lugs under the output screw terminals and tighten (Figure 2.6). Slide the supplied non-touch TELEPHONE cover over the output connections from top to bottom to cover them. (MOH) Crown recommends using pre-built or professionally wired, high-qual- ity, two-conductor, heavy gauge speaker wire and connectors. You may 100V use crimp-on spade lugs for your output conne
Summary of the content on the page No. 11
+ + Commercial Audio Series Mixer-Amplifi ers 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 amplifi er output connectors. I
Summary of the content on the page No. 12
Commercial Audio Series Mixer-Amplifi ers 3 Operation 3.1 Powering Up 1. Turn off any equipment connected to the Preamp Output connector. 2. Plug the amplifi er’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.
Summary of the content on the page No. 13
Commercial Audio Series Mixer-Amplifi ers 4 Troubleshooting CONDITION: No power to the mixer-amplifi er. CONDITION: No sound. POSSIBLE REASON: POSSIBLE REASON: � The mixer-amplifi er’s Power switch is off. � The amplifi er is in “fault” mode. A Fault status can be triggered when one of the amplifi er’s � The mixer-amplifi er is not plugged into the protection circuits is activated. First disconnect power receptacle. your speakers from the affected channel(s) one by one to determine if one of
Summary of the content on the page No. 14
Commercial Audio Series Mixer-Amplifi ers 5 Specifi cations Mum Guaranteed Guaranteed Minimum Power 135MA 160MA 1 kHz with 0.5% THD Minimum guaranteed power into 8 ohms or 70V/100V 35W 60W output 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 Mic: > 58 dB. volume at minimum) Line: > 60 dB. Telephone: > 60 dB. Inputs 2 or 3 (and 4 in 160MA): > 78 dB. THD + N <
Summary of the content on the page No. 15
Commercial Audio Series Mixer-Amplifi ers 6 Service Crown mixer-amplifi ers are quality units that rarely unit in the original factory pack. A list of authorized 4. Use a bold black marker and write the SRA require servicing. Before returning your unit for service centers in your area can be obtained from number on three sides of the box. Cardboard servicing, please contact Crown Technical Support Crown Factory Service, or online from 5. Record the SRA number for future reference. The supp
Summary of the content on the page No. 16
Commercial Audio Series Mixer-Amplifi ers 7 Warranty UNITED STATES & CANADA SUMMARY OF WARRANTY defective or malfunctioning product avail- DISCLAIMER OF CONSEQUENTIAL AND INCIDENTAL DAMAGES Crown International, 1718 West Mishawaka able to us free and clear of all liens or other Road, Elkhart, Indiana 46517-4095 U.S.A. encumbrances. The refund will be equal to the YOU ARE NOT ENTITLED TO RECOVER FROM US ANY INCIDENTAL DAMAGES RESULTING warrants to you, the ORIGINAL PURCHASER actual purchase pr
Summary of the content on the page No. 17
Commercial Audio Series Mixer-Amplifi ers 7 Warranty WORLDWIDE EXCEPT USA & CANADA SUMMARY OF WARRANTY WHAT THE WARRANTOR WILL DO DISCLAIMER OF CONSEQUEN- Crown International, 1718 West Mishawaka We will remedy any defect, regardless of TIAL AND INCIDENTAL DAMAGES Road, Elkhart, Indiana 46517-4095 U.S.A. the reason for failure (except as excluded), YOU ARE NOT ENTITLED TO RECOVER FROM warrants to you, the ORIGINAL PURCHASER by repair, replacement, or refund. We may US ANY INCIDENTAL DAMAGES RESU
Summary of the content on the page No. 18
Commercial Audio Series Mixer-Amplifi ers This page intentionally left blank page 18 Operation Manual
Summary of the content on the page No. 19
Commercial Audio Series Mixer-Amplifi ers 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.
Summary of the content on the page No. 20
Commercial Audio Series Mixer-Amplifi ers This page intentionally left blank page 20 Operation Manual
