Crown 140MPA Operation Manual Download

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Commercial Audio Series

Mixer-Amplifiers

page 22

Operation Manual

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Summary of Contents for 140MPA

Page 1: ...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 prop...

Page 2: ...ided plug does not fit into your outlet consult an electrician for replacement of the obsolete outlet 10 Protect the power cord from being walked on or pinched particularly at plugs convenience receptacles and the point where they exit from the apparatus 11 Only use attachments accessories specified by the manufacturer 12 Use only with a cart stand tripod bracket or table specified by the manufact...

Page 3: ...s for Professional Use Part 2 Immunity EN 61000 4 2 2001 Electrostatic Discharge Immunity Environment E2 Criteria B 4k V Contact 8k V Air Discharge EN 61000 4 3 2001 Radiated Radio Frequency Electromagnetic Immunity Environment E2 Criteria A EN 61000 4 4 2001 Electrical Fast Transient Burst Immunity Criteria B EN 61000 4 5 2001 Surge Immunity Criteria B EN 61000 4 6 2003 Immunity to Conducted Dist...

Page 4: ...System 11 2 6 Phantom Power 11 2 7 Link In Out Switch 11 2 8 Remote Volume Control 12 3 Operation 13 3 1 Powering Up 13 3 2 Priority Ducking 13 3 3 Music On Hold 13 4 Troubleshooting 14 5 Specification 15 6 Service 16 6 1 Worldwide Service 16 6 2 US and Canada Service 16 6 2 1 Service at a US or Canada Service Center 16 6 2 2 Factory Service 16 6 2 3 Factory Service Shipping Instructions 16 6 2 4 ...

Page 5: ...e control Multiple units can be linked 1 1 Features 4 inputs each with a volume control one 40W amplifier output channel Ideal for paging background music and music on hold Balanced Phoenix type mic line inputs tele phone input dual RCA stereo music inputs touch proof screw terminal speaker outputs Priority ducking Independent bass and treble controls for each input Three Year No Fault Fully Trans...

Page 6: ...ted potentiometers with knobs C Master Output Volume Control Detented poten tiometer with knob D Output Signal Presence Indicator Green LED illuminates when output signal level exceeds 100 mV 45 dB below full power from the 4 ohm tap E Clip Indicator Red LED on output illuminates at threshold of audible distortion F Power Indicator Blue LED indicates power on G H Tone Controls Bass and Treble non ...

Page 7: ...onnector summed into Input 1 for paging from a telephone system U AC Power Inlet Detachable IEC V Priority Section Active indicator Illuminates when VOX ducking is active VOX Threshold Trim pot controls how loud the voice must be before ducking occurs Can be set for no ducking Priority Connector 3 pin Phoenix type connector for push to talk mic contact closure Input 1 is the priority input for the...

Page 8: ... not mount units directly on top of each other Allow 2 rack units 3 5 inches between units for convection cooling The Figure 2 1 Dimensions side walls of the rack should be a minimum of two inches 5 1 cm away from the mixer amplifier sides and the back of the rack should be a mini mum of four inches 10 2 cm from the mixer amplifier back panel 2 2 How to Attach Rack Ears 1 Locate the two rack ears ...

Page 9: ...d Amp Input Connectors 3 pin Phoenix type balanced one per input channel Figure 2 3 Dual RCA Input Connector For stereo music signals unbalanced summed together two connectors per input Figure 2 4 Transformer isolated 600 ohm input 3 pin Phoenix type Summed into Input 1 for paging from a telephone system See Figure 2 5 2 Setup Figure 2 3 Mic Line Connectors and Amp Input Connectors MIC To mic or l...

Page 10: ...able and a 3 pin Phoenix type con nector for Preamp Line Output Figure 2 7 and for MOH 1V or 1W output Figure 2 8 Use 1 conductor shielded cable and RCA plugs for the MOH 1V Line Output RCA Connector Figure 2 9 Figure 2 7 Connections to the Preamp Line Out Connector Figure 2 8 Connections to the MOH Line Output Phoenix Connector 1V or 1W Connector Figure 2 9 Connections to the MOH Stereo Line Out ...

Page 11: ...nser mics require phantom power to operate If you are using a condenser microphone on Input 1 turn on the Phantom Power Switch on the back of the 140MPA The microphone must be able to work on 15V phantom power which the 140MPA mic input connector provides 2 7 Link In Out Switch This switch Figure 2 11 affects which signals are heard when another mixer is wired to the 140MPA IN Any signal applied t...

Page 12: ...te 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 Figure 2 12 Wiring a 1 VCAP Level Control to the Output VCA Connector Phoenix type plug Output VCA Connector Output VCA Connector 2 Setup ...

Page 13: ...e power cord 3 2 Priority Ducking If you want a microphone to duck turn down the background music or other input signals follow this procedure On the back of the 140MPA 1 Connect a push to talk mic contact to the Priority Connector Figure 3 1 Input 1 is the priority input for the amplified output so Input 1 ducks the other inputs Threshold of activation depends on input voltage Ducking does not af...

Page 14: ...on stantly Master volume level is too high Turn it down to about 3 4 of maximum level CONDITION No sound POSSIBLE REASON 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 If an amplifier channel has a thermal fau...

Page 15: ...Total Harmonic Distortion THD at rated power at 1 kHz 0 5 DC Output Offset 5 mV Input Impedance nominal Mic 400 ohms Line 100 kilohms RCA 50 kilohms Crosstalk all controls at 10 70 dB at 1 kHz Line Output Level nominal 1V into 10 kilohms Phantom Power 15 VDC AC Line Voltages Available 120V 60 Hz Line voltage tolerance 15 20 Operating Temperature Humidity 0o C to 40o C at 95 relative humidity non c...

Page 16: ...e cost of shipping and Crown will reimburse you Send copies of the shipping receipts to Crown to receive reimbursement Your repaired unit will be returned via UPS ground Please contact us if other arrangements are required 6 2 3 Factory Service Shipping Instruc tions 1 Service Return Authorization SRA is required for product being sent to the factory for service Please complete the SRA by going to...

Page 17: ...e center or our factory All expenses in remedying the defect including surface shipping costs in the United States will be borne by us You must bear the expense of shipping the product between any for eign country and the port of entry in the United States including the return shipment and all taxes duties and other customs fees for such for eign shipments HOW TO OBTAIN WARRANTY SERVICE You must n...

Page 18: ...ter est insurance closing costs and other finance charges less a reasonable depreciation on the product from the date of original purchase War ranty work can only be performed at our autho rized service centers We will remedy the defect and ship the product from the service center within a reasonable time after receipt of the defec tive product at our authorized service center HOW TO OBTAIN WARRAN...

Page 19: ..._____ E mail address ___________________________________________ Phone include area code ___________________________ Fax __________________________________ MODEL SERIAL PURCHASE DATE ie MA3600VZ CE1000A PCC160 mo day yr ________________________________ ____________________ ______ _____ _____ ________________________________ ____________________ ______ _____ _____ ________________________________ _...

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Page 21: ..._________________________________________________________________________________________________________________________________________________ Other equipment in your system ___________________________________________________________________________________________________________________________________________________________________________ If warranty is expired pleae provide method of paym...

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