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XLS Series 

Power Amplifiers

page 22

Operation Manual

Crown amplifiers are quality units that rarely 
require servicing. Before returning your unit for 
servicing, please contact Crown Technical Sup-
port to verify the need for servicing.

This unit has very sophisticated circuitry which 
should only be serviced by a fully trained tech-
nician. This is one reason why each unit bears 
the following label:

CAUTION: To prevent electric shock, do 
not remove covers. No user serviceable 
parts inside. Refer servicing to a quali-
fied technician.

8.1 Worldwide Service

Service may be obtained from an authorized 
service center. (Contact your local Crown/
Amcron representative or our office for a list of 
authorized service centers.) To obtain service, 
simply present the bill of sale as proof of pur-
chase along with the defective unit to an autho-
rized service center. They will handle the 
necessary paperwork and repair.

Remember to transport your unit in the original 
factory pack. 

8.2 US and Canada Service

Service may be obtained in one of two ways: 
from an authorized service center or from the 
factory. You may choose either. It is important 
that you have your copy of the bill of sale as 
your proof of purchase.

8.2.1 Service at a US or Canada 
Service Center

This method usually saves the most time and 
effort. Simply present your bill of sale along 
with the defective unit to an authorized service 
center  to obtain service. They will handle the 
necessary paperwork and repair. Remember to 
transport the unit in the original factory pack. A 

list of  authorized service centers in your area 
can be obtained from the Crown website at 
www.crownaudio.com, or by calling Crown 
Customer Service.

8.2.2 Factory Service

To obtain factory service, fill out the service 
information page found in the back of this man-
ual and send it along with your proof of pur-
chase and the defective unit to the Crown 
factory. 

For warranty service, we will pay for ground 
shipping both ways in the United States. Con-
tact Crown Customer Service to obtain pre-
paid  shipping labels prior to sending the unit. 
Or, if you prefer, you may prepay the 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 arrange-
ments are required.

8.2.3 Factory Service Shipping 
Instructions:

1.

Before sending a Crown product to the 
factory for service, first call the Crown Ser-
vice Department for a return authorization 
(RA) number.

2.

Be sure to fill out the service information 
form that follows and enclose it with your 
shipment, either inside the box or in a 
packing slip envelope securely attached to 
the outside of the shipping carton. Do not 
send the service information form sepa-
rately. If you are sending the unit from a 
Shipping Center, we recommend taping 
the form to the product.  We also recom-
mend recording the serial number and 
model before shipping for your reference.

3.

To ensure the safe transportation of your 
unit to the factory, ship it in an original 
factory packing container. If you don’t have 
the original carton, you may obtain a prod-
uct service foam-in-place shipping pack 
from the Crown Factory Service Depart-
ment at the number listed below. For non-
warranty service, you may also provide 
your own shipping pack, however we still 
recommend using a Crown Supplied Ship-
ping Container. Minimum recommended 
requirements for materials are as follows: 
275 P.S.I. burst test Double-Wall carton 
that allows for 2-inch solid Styrofoam on 
all six sides of unit or 3 inches of plastic 
bubble wrap on all six sides of unit; 
securely seal the package with an adequate 
carton sealing tape. Do not use light boxes 
or “peanuts.” Damage caused by poor 
packing cannot be covered under warranty. 

4.

Do not ship the unit in any kind of cabinet 
(wood or metal). Ignoring this warning 
may result in extensive damage to the unit 
and the cabinet. Accessories are not 
needed—do not send the product docu-
mentation, cables and other hardware.

If you have any questions, please contact 
Crown Factory Service.

Crown Factory Service

 1718 W. Mishawaka Rd., 

Elkhart, Indiana 46517 U.S.A.

Telephone:

 574-294-8200

800-342-6939 (North America, 

Puerto Rico, and Virgin Islands only)

Facsimile: 

574-294-8301 (Technical Support)

574-294-8124 (Factory Service)

Internet: 

http://www.crownaudio.com

8 Service

Summary of Contents for 402and 602

Page 1: ...y 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 and Amcron are registered trademarks of Crown International Other trademarks are the p...

Page 2: ...T IMPORTANT XLS Series amplifiers require Class 2 output wiring MAGNETIC FIELD CAUTION Do not locate sensitive high gain equip ment such as preamplifiers or tape decks directly above or below the unit Because this amplifier has a high power density it has a strong magnetic field which can induce hum into unshielded devices that are located nearby The field is strongest just above and below the uni...

Page 3: ...3 2 1996 Electromagnetic Compatibility Product Family Standard for Audio Video Audio Visual and Entertainment Lighting Control Apparatus for Professional Use Part 2 Immunity EN 61000 4 2 1995 Electrostatic Discharge Immunity Environment E2 Criteria B 4k V Contact 8k V Air Discharge EN 61000 4 3 1996 Radiated Radio Frequency Electromagnetic Immunity Environment E2 Criteria A EN 61000 4 4 1995 Elect...

Page 4: ... AC Mains 11 2 8 Protecting Your Speakers 11 2 9 Startup Procedure 11 3 Operation 12 3 1 Precautions 12 3 2 Front Panel Controls and Indicators 13 3 3 Back Panel Controls and Connectors 14 4 Advanced Features and Options 15 4 1 Protection Systems 15 4 1 1 Output Current Limiting 15 4 1 2 DC Protection 15 4 1 3 Circuit Breaker 15 4 1 4 Thermal Protection 15 5 Troubleshooting 16 6 Specifications 17 ...

Page 5: ...nel power and fault condi tions 1 2 How to Use This Manual This manual provides you with the necessary information to safely and correctly setup and operate your amplifier It does not cover every aspect of installation setup or operation that might occur under every condition For addi tional information please consult Crown s Amplifier Application Guide available online at www crownaudio com Crown...

Page 6: ...t Safety Instruc tions found at the beginning of this manual 2 2 Install Your Amplifier CAUTION Before you begin make sure your amplifier is disconnected from the power source with the power switch in the off position and all level controls turned completely down counterclock wise Use a standard 19 inch 48 3 cm equipment rack EIA RS 310B See Figure 2 1 for ampli fier dimensions You may also stack ...

Page 7: ...ductor heavy gauge speaker wire and connectors You may use a 4 pole Speakon connector Figure 2 5 and Table 1 or banana plugs spade lugs or bare wire for your output connectors Figure 2 6 To prevent the possibility of short circuits wrap or otherwise insulate exposed loudspeaker cable connectors Note Binding post outputs on European models come with safety plugs installed to prevent European power ...

Page 8: ...S Maintain proper polarity on output connectors Connect Channel 1 loudspeaker s positive lead to Channel 1 positive red terminal of amp repeat for negative Repeat Channel 2 wiring as for Channel 1 Figure 2 7 shows how to wire stereo speakers to the 5 way binding posts The next page shows how to wire stereo speakers to the single Speakon output connector 2 Setup Figure 2 7 System Wiring Stereo Mode...

Page 9: ...to the amplifier s Speakon connector and wire speaker 2 to speaker 1 Figure 2 9 Figure 2 8 Speakon Stereo Wiring Option 1 Wire Two Speakers to One Speakon Connector Figure 2 9 Speakon Stereo Wiring Option 2 Wire Speaker 1 to the Amplifier s Speakon Connector and Wire Speaker 2 to Speaker 1 SPEAKER 1 SPEAKER 2 AMPLIFIER SPEAKON OUT SPEAKON IN SPEAKON OUT OR THRU SPEAKON IN CABLE 1 AMPLIFIER OUT TO ...

Page 10: ... each amplifier input Figure 2 11 NOTE Crown provides a reference of wiring pin assignments for commonly used connector types in the Crown Amplifier Application Guide available at www crownaudio OUTPUTS There are two ways to wire a speaker in Bridge Mono mode 1 Wire the speaker across the red binding post of each channel Figure 2 11 Do not use the black binding posts when the amp is being oper ate...

Page 11: ...Set the limiter threshold so that mixer signals above 0 on the mixer meters do not quite drive the amplifier into clipping Also avoid sending strong subsonic signals to the amplifier High level low frequency signals from breath pops or dropped microphones can blow out drivers To prevent subsonic signals insert a high pass filter between mixer output and amplifier input or between mixer and limiter...

Page 12: ...nd lead of an output cable to the input signal ground This may form a ground loop and cause oscillations 3 Operation 4 WARNING Never connect the output to a power supply battery or power main Electrical shock may result 5 Tampering with the circuitry or making unau thorized circuit changes may be hazardous and invalidates all agency listings 6 Do not operate the amplifier with the red Clip LEDs co...

Page 13: ... channel illu minate when the channel s output signal is being overdriven D Power Indicator Green LED indicates amplifier has been turned on and AC power is available E Fault Indicator Yellow LED illuminates when amplifier is in protect mode Also illuminates briefly during normal power up when amplifier is first switched on F Power Switch Amplifier is on when the switch is in the UP position Figur...

Page 14: ...s One pair per channel accept banana plugs spade lugs or bare wire Note Binding post outputs on European models come with safety plugs installed to prevent European power cord plugs from being inserted The top bottom entry positions for these connectors should therefore be used with European models L 4 Pole Speakon Output Connector One connector is used for the two output chan nels It accepts a 4 ...

Page 15: ... with no input connected and level controls set at minimum If this is the case contact your dealer or service center 4 1 3 Circuit Breaker The high voltage power supplies of your Crown amplifier are protected by a circuit breaker The breaker rating varies depending on model and supply voltage as follows 4 1 4 Thermal Protection The Thermal Protection circuit will activate if the internal heatsink ...

Page 16: ...te constantly CONDITION No sound POSSIBLE REASON The amplifier has just turned on and is still in the 4 second turn on delay 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 channels s one by one to determine if one of the loads is shorted If the indicators return to normal s...

Page 17: ...er ch Stereo 4 ohms per ch Bridge Mono 4 ohms 250W 225W 500W 610W 445W 1 120W 880W 670W 1 760W Performance XLS 202 XLS 402 XLS 602 Sensitivity volts RMS for full rated power at 4 ohms 0 725 1 025 1 26 Frequency Response at 1 watt 22Hz 20 kHz 0 75 dB 0 75 dB 0 75 dB Phase Response at 1 watt 10 Hz 20 kHz 10 19 10 19 10 19 Signal to Noise Ratio below rated power 20 Hz to 20 kHz A weighted below rated...

Page 18: ... 50 Hz 120 VAC 60 Hz and 230 VAC 50 Hz 120 VAC 60 Hz and 230 VAC 50 Hzz Construction XLS 202 XLS 402 XLS 602 Ventilation Flow through ventilation from front to back Flow through ventilation from front to back Flow through ventilation from front to back Cooling Internal heat sinks with forced air cooling Internal heat sinks with forced air cooling Internal heat sinks with forced air cooling Air Vol...

Page 19: ...ype of source material Duty cycle of pink noise is 50 Duty cycle of highly compressed rock n roll midrange is 40 Duty cycle of rock n roll is 30 Duty cycle of background music is 20 Duty cycle of continuous speech is 10 Duty cycle of infrequent short duration paging is 1 Here are the equations used to calculate the data presented in Figures 7 1 7 2 and 7 3 The value used for amplifier inefficiency...

Page 20: ...1 0 6 213 54 L O A D 2 Ohm Stereo 4 Ohm Stereo 8 Ohm Stereo Duty Cycle AC Mains Power Draw W Current Draw Amps Thermal Dissipation AC Mains Power Draw W Current Draw Amps Thermal Dissipation AC Mains Power Draw W Current Draw Amps Thermal Dissipation 120V 230V btu hr kcal hr 120V 230V btu hr kcal hr 120V 230V btu hr kcal hr 50 529 5 1 2 6 953 240 427 4 1 2 1 776 196 315 3 0 1 6 580 146 40 427 4 1 ...

Page 21: ...l hr 120V 230V btu hr kcal hr 120V 230V btu hr kcal hr 50 1359 13 2 6 9 1774 447 978 9 5 5 0 1292 326 613 6 0 3 1 831 209 40 1093 10 6 5 6 1437 362 788 7 7 4 0 1051 265 496 4 8 2 5 682 172 30 826 8 1 4 2 1100 277 597 5 8 3 0 811 204 378 3 7 1 9 534 135 20 559 5 5 2 8 763 192 407 4 0 2 1 570 144 261 2 5 1 3 386 97 10 293 2 9 1 5 426 107 216 2 1 1 1 329 83 143 1 4 0 7 237 60 XLS 602 Figure 7 3 XLS 6...

Page 22: ... you prefer you may prepay the 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 arrange ments are required 8 2 3 Factory Service Shipping Instructions 1 Before sending a Crown product to the factory for service first call the Crown Ser vice Department fo...

Page 23: ...r 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 notify u...

Page 24: ... 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 WARRANTY SERV...

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