Crown 14M Operation Manual
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Crown 14M Operation Manual

Commercial audio series
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Operation Manual

Commercial Audio Series
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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.
The information provided in this manual was deemed accurate as of the publication date. However, updates to this information may have
occurred. To obtain the latest version of this manual, please visit the Crown website at www.crownaudio.com.
Trademark Notice: Crown, Crown Audio and Amcron are registered trademarks of Crown International. Other trademarks are the
property of their respective owners.
Some models may be exported under the name Amcron.
©2008 by Crown Audio
Inc., 1718 W. Mishawaka Rd., Elkhart, Indiana 46517-9439 U.S.A. Telephone: 574-294-8200
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Summary of Contents for Crown 14M

  • Page 1: Operation Manual

    The information provided in this manual was deemed accurate as of the publication date. However, updates to this information may have occurred. To obtain the latest version of this manual, please visit the Crown website at www.crownaudio.com. Trademark Notice: Crown, Crown Audio and Amcron are registered trademarks of Crown International. Other trademarks are the property of their respective owners.

  • Page 2: Important Safety Instructions

    Important Safety Instructions 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 instruc tions.

  • Page 3: Declaration Of Conformity

    United Kingdom Equipment Type: Commercial Audio Series Family Name: Mixers Model Names: 14M, 28M EMC Standards: EN 55103-1:1997 Electromagnetic Compatibility - Product Family Standard for Audio, Video, Audio-Visual and Entertainment Lighting Control Apparatus for Professional Use, Part 1: Emissions EN 55103-1:1997 Magnetic Field Emissions-Annex A @ 10 cm and 1 M...

  • Page 4: Table Of Contents

    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 1.3 Back Panel Controls and Connectors ...7 2 Setup ...8 2.1 Installation ...8 2.2 How to Attach Rack Ears...8 2.3 Choose Input Wire and Connectors...9 2.4 Choose Output Wire and Connectors ...9 2.5 Wire Your System...10...

  • Page 5: Welcome

    These low-cost units provide all necessary features in a simple building-block format. The 14M has 4 inputs and 1 output channel. The 28M has 8 inputs and 2 output channels. Some applications include schools, hospitals, factories, restaurant/retail, houses of worship, fi...

  • Page 6: Front Panel Controls And Indicators

    Green LED, one for each input channel, illuminates when input signal exceeds –24 dBu (line) or –70 dBu (mic). B. Input Volume Controls Microphone/line, four in 14M, eight in 28M. Detented potentiometers with knobs. C. Output Volume Controls One per output channel. Detented potentiometer with knob.

  • Page 7: Back Panel Controls And Connectors

    Commercial Audio Series Mixers 1 Welcome 1.3 Back Panel Controls and Connectors J. AC Power Inlet Detachable IEC. K. Mixer Confi g Switch A DIP switch with two functions: 1. Assigns one of the inputs as the priority input for each output, thereby temporarily muting the remaining inputs.

  • Page 8: Setup

    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.

  • Page 9: Choose Input Wire And Connectors

    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 and connectors. You should use 3-pin Phoenix-type cable ends at the mixer inputs. Unbalanced line may also be used but may result in noise over long cable runs.

  • Page 10: Wire Your System

    2 Setup 2.5 Wire Your System 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 RCA input connectors. OUTPUTS: Maintain proper polarity (+/–) on output con nectors.

  • Page 11: Input Routing

    Commercial Audio Series Mixers 2.6 Input Routing In the 28M, any input can be assigned to Output 1, Output 2 or both. The two DIP switches labeled INPUT ROUTING are used (Figure 2.7). Follow the settings printed on the back panel next to the INPUT ROUTING switch. For example, to send input Channel 3 to Output 1 and Output 2, turn on DIP switches 13 and 14.

  • Page 12: Powering Up

    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.

  • Page 13: Block Diagram

    Commercial Audio Series Mixers 2 Setup 2.11 Block Diagram Pre-Announce Gain Phantom Powe r Pre-Announce Pre-Announce Input Gain Chim e Line Mic/Line Mi c [Bal] SP I CH 1 Tone Control Bass Trebl e Gain 1 Input Gain Line Mic/Line Mi c [Bal] SP I...

  • Page 14: Troubleshooting

    3 Troubleshooting CONDITION: No power to the mixer. POSSIBLE REASON: • The mixer’s Power switch is off. • The mixer is not plugged into the power • The mixer’s high-voltage power supply circuit • If the unit is operated from a 24V DC supply, the CONDITION: Distorted sound.

  • Page 15: Specifi Cations

    Commercial Audio Series Mixers 4 Specifi cations Performance Number of input channels Number of output channels Input Sensitivity (volts RMS) for full output at maximum gain Balanced mic inputs Balanced line inputs RCA connectors Frequency Response (at line out, 20 Hz to 20 kHz) Signal to Noise Ratio (master volume at minimum) Total Harmonic Distortion (THD) with 800 mV balanced input, 1V output Input Impedance (nominal)

  • Page 16: Service

    1. Fill out and include the Crown Audio Factory Ser vice Information sheet in the back of this manual. 2. Do not ship any accessories (manuals, cords, hard ware, etc.) with your unit.

  • Page 17: Warranty

    Commercial Audio Series Mixers 6 Warranty SUMMARY OF WARRANTY Crown International, 1718 West Mishawaka Road, Elkhart, Indiana 46517-4095 U.S.A. warrants to you, the ORIGINAL PURCHASER and ANY SUB SEQUENT 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.
  • Page 18 6 Warranty SUMMARY OF WARRANTY Crown International, 1718 West Mishawaka Road, Elkhart, Indiana 46517-4095 U.S.A. warrants to you, the ORIGINAL PURCHASER and ANY SUB SEQUENT OWNER of each NEW Crown1 product, for a period of three (3) years from the date of pur chase by the original purchaser (the “warranty period”) that the new Crown product is free of defects in materials and workmanship, and...

  • Page 19: Warranty Registration

    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. 1718 W Mishawaka Rd Elkhart IN 46517 Please note that some information is required.
  • Page 20 Commercial Audio Series Mixers THIS PAGE INTENTIONALLY LEFT BLANK page 20 Operation Manual...

  • Page 21: Crown Factory Service Information Form

    Commercial Audio Series Mixers Shipping Address: Crown Audio Factory Service, 1718 W. Mishawaka Rd., Elkhart, IN 46517 SRA #: __________________(If sending product to Crown factory service.) Individual or Business Name: ____________________________________________________________________________________________________________________________________________________________ Phone #: __________________________________________________ Street Address (please, no P.O. Boxes): _____________________________________________________________________________________________________________________________________________________...
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  • Page 23 Commercial Audio Series Mixers THIS PAGE INTENTIONALLY LEFT BLANK Operation Manual page 23...

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28m

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