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Commercial Audio Series
1234 SPI CLIP
10 10 10 10 10
POWER
5 15 5 15 5 15 5 15 5 15
0 20 0 20 0 20 0 20 0 20
14M
MASTER
B T B T B T B T
Operation Manual
123456 7 8 SPI CLIP SPI CLIP
10 10 10 10 10 10 10 10 10 10
POWER
5 15 5 15 5 15 5 15 5 15 5 15 5 15 5 15 5 15 5 15
28M
0 20 0 20 0 20 0 20 0 20 0 20 0 20 0 20 0 20 0 20
MASTER 1 MASTER 2
B T B T B T B T B T B T B T B T
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Commercial Audio Series Mixers Important Safety Instructions 15) WARNING: TO REDUCE THE RISK OF FIRE OR 1) Read these instructions. ELECTRIC SHOCK, DO NOT EXPOSE THIS 2) Keep these instructions. APPARATUS TO RAIN OR MOISTURE. 3) Heed all warnings. 16) DO NOT EXPOSE TO DRIPPING OR 4) Follow all instructions. SPLASH ING. DO NOT PLACE OBJECTS 5) Do not use this apparatus near water. FILLED WITH LIQUID, SUCH AS VASES,ON 6) Clean only with a dry cloth. THIS APPARATUS. 7) Do not block any venti
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Commercial Audio Series Mixers Crown International, Inc. DECLARATION of CONFORMITY Issued By: Crown International, Inc. FOR COMPLIANCE QUESTIONS ONLY: Sue Whitfi eld 1718 W. Mishawaka Road 574-294-8289 Elkhart, Indiana 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 Series Family Name: Mixers Model Names: 14M, 28M EMC Standards:
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Commercial Audio Series Mixers Table of Contents 2.9 Powering Up ................................................................12 Important Safety Instructions.............................................2 2.10 Included Accessories .................................................12 Declaration of Conformity .................................................3 2.11 Block Diagram............................................................13 1 Welcome ............................
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Commercial Audio Series Mixers 123456 7 8 SPI CLIP SPI CLIP 10 10 10 10 10 10 10 10 10 10 POWER 5 15 5 15 5 15 5 15 5 15 5 15 5 15 5 15 5 15 5 15 0 20 0 20 0 20 0 20 0 20 0 20 0 20 0 20 0 20 0 20 MASTER 1 MASTER 2 B T B T B T B T B T B T B T B T 1.1 Features � Any input can be sent to any output 1 Welcome � Independent Bass and Treble controls on ® � 4 or 8 inputs, 1 or 2 line outputs The Crown 14M and 28M are high-value each input mixers for commercial and industrial audio. The � Ideal for c
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Commercial Audio Series Mixers 1 Welcome 1.2 Front Panel Controls and Indicators E. Clip Indicator Red LED, one per output channel, illuminates at A. Input Signal Presence Indicator thresh old of audible distortion. Green LED, one for each input channel, illuminates when F. Power Indicator input signal exceeds –24 dBu (line) or –70 dBu (mic). Blue LED indicates power on. B. Input Volume Controls G, H. Tone Controls Microphone/line, four in 14M, eight in 28M. Detented Bass and Treble non-d
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Commercial Audio Series Mixers 1 Welcome M. Mic/line Switch 1.3 Back Panel Controls and Connectors P. Fuse Selects mic-level or line-level input signals. One switch for Protects the power supply. each balanced input. J. AC Power Inlet Detachable IEC. Q Priority Connector N. Dual RCA Input Connector 3-pin Phoenix-type connector allows Input 1 or Input 5 For stereo music signals, unbalanced, summed together, K. Mixer Confi g Switch (28M only) to mute other input signals by contact closure. two c
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Commercial Audio Series Mixers 2 Setup 2.1 Installation 2.2 How to Attach Rack Ears 1. Locate the two rack ears supplied. CAUTION: Before you begin, make sure your 2. See Figure 2.2. Remove the two screws from each mixer is disconnected from the power side of the chassis near the front. source, with the power switch in the “off” 3. Place a rack ear fl ush with the right front of the position and all level controls turned chassis. com pletely down (counterclockwise). 4. Insert a screw that y
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Commercial Audio Series Mixers 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 Figure 2.3 Balanced Input and connectors. You should use 3-pin Phoenix-type cable ends at Connector Wiring the mixer 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 wir ing, MIXER INPUT and Figure 2.4 sh
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Commercial Audio Series Mixers 2 Setup 2.5 Wire Your System LM-301A Typical input and output wiring is shown in Figure 2.6. INPUTS: Connect microphones or balanced line-level sources to mixer balanced inputs. Set Mic/Line switches accordingly. Connect unbalanced line-level signals to LM-201 RCA input connectors. OUTPUTS: Maintain proper polarity (+/–) on output con nectors. For more application drawings, see the enclosed PZM-11LLWR Commercial Audio Mixer Quick-Start Guide. NOTE: Crown pro
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Commercial Audio Series Mixers 2.6 Input Routing One DIP-switch selection enables Channel 1 as the priority input, which To give priority to the Channel-1 input to Out 1 and Out 2: mutes all other inputs to Out 1. In the 28M only, another DIP switch Set the OUT CONFIG DIP switch as follows: In the 28M, any input can be assigned to Output 1, Output 2 or both. The selec tion enables Channel 5 as the priority input, which mutes all other 1 OFF two DIP switches labeled INPUT ROUTING are used (Figure
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Commercial Audio Series Mixers 2 Setup 2.9 Powering Up 1. Turn off any equipment connected to the Line Out connectors. 2. Plug the mixer’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. Have someone talk into a microphone. Turn up the master volume con trol(s) until the output clip LED fl ashes, then
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Commercial Audio Series Mixers 2 Setup 2.11 Block Diagram 28M Block Diagram Pre-Announce Gain Phantom Powe r Pre-Announce Version 1.0 Pre-Announce Input Gain Chim e Line SPI 1 Clip 1 Output 1 Mic/Line Mi c [Bal] Ch 1 Priority SP I [SW2] + VC A HP Filter CH 1 Tone Control – Ch 1 Normal [SW1] Ch 1 to Out 1 RCA [SW9] Master 1 Bass Trebl e Gain 1 Ch 1 to Out 2 Input Gain Mute Line [SW10] Mic/Line Mi c [Bal] SP I C
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Commercial Audio Series Mixers 3 Troubleshooting CONDITION: No sound. CONDITION: No power to the mixer. POSSIBLE REASON: POSSIBLE REASON: � Check the fuse and replace if necessary, or return mixer to Crown or an authorized Crown � The mixer’s Power switch is off. Service Center for servicing. � The mixer is not plugged into the power recep tacle. � The mixer’s high-voltage power supply circuit fuse has opened. Verify that the AC mains volt age is correct, then press the Reset button on th
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Commercial Audio Series Mixers 4 Specifi cations Performance 14M 28M Number of input channels 4 8 Number of output channels 1 2 Input Sensitivity (volts RMS) for full output at maximum gain 3 mV 3 mV Balanced mic inputs 800 mV 800 mV Balanced line inputs 400 mV 400 mV RCA connectors Frequency Response (at line out, 20 Hz to 20 kHz) ± 1 dB ± 1 dB Signal to Noise Ratio (master volume at minimum) 100 dB 100 dB Total Harmonic Distortion (TH
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Commercial Audio Series Mixers 5 Service Crown mixers are quality units that rarely require 5.2.4 Packing Instructions be obtained from Crown Factory Service, or online from servic ing. Before returning your unit for servicing, please http://www.crownaudio.com/support/servcent.htm. Important: These instructions must be followed. If they Cardboard con tact Crown Technical Support to verify the need for are not followed, Crown Audio, Inc. assumes no support 5.2.2 Factory Service servicing. r
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Commercial Audio Series Mixers 6 Warranty UNITED STATES & CANADA SUMMARY OF WARRANTY the actual purchase price, not including inter est, THIS INCLUDES ANY DAMAGE TO ANOTHER insurance, closing costs, and other fi nance PRODUCT OR PRODUCTS RESULT ING FROM Crown International, 1718 West Mishawaka Road, charges less a reasonable depreciation on the SUCH A DEFECT. SOME STATES DO NOT ALLOW Elkhart, Indiana 46517-4095 U.S.A. warrants to product from the date of original purchase. THE EXCLUSION OR L
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Commercial Audio Series Mixers 6 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 Elkhart, Indiana 46517-4095 U.S.A. warrants to rea son for failure (except as excluded), by repair, YOU ARE NOT ENTITLED TO RECOVER FROM US you, the ORIGINAL PURCHASER and ANY replacement, or refund. We may not elect refund ANY IN
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Commercial Audio Series Mixers 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 Mixers THIS PAGE INTENTIONALLY LEFT BLANK page 20 Operation Manual
