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

This unit has very sophisticated circuitry which should
only be serviced by an authorized Crown Service Center..
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
qualified technician.

Worldwide Service

Service may be obtained from an authorized service
center.  Contact your local Crown/Amcron distributor or
our office for a list of authorized service centers.  To
obtain service, simply present the receipt as proof of
purchase along with the defective unit to an authorized
s distributor. They will handle the necessary paperwork
and repair.

Remember to transport your unit in the original factory
pack.

Service Shipping Instructions:

1. Contact your local Crown distributor for details

regarding where to send your amplifier.  This
information is available on the Crown website or by
contacting Crown Audio Customer Service, see
details panel.

2. To ensure the safe transportation of your unit to

the factory, ship it in an original factory packing
container. If you don’t have one, call or write
Crown’s Parts Department. With the exception of

Always use the
original factory pack
to transport the unit.

1 1 . 0

S e r v i c e   &   W a r r a n t y

Crown Audio Customer Service

Technical Support / Factory Service
Plant 2 SW, 1718 W. Mishawaka Rd., Elkhart,
Indiana 46517 U.S.A.

Telephone:

219-294-8200
800-342-6939 

(North America,

Puerto Rico, and Virgin Islands

only)

Facsimile:

219-294-8301 

(Technical Support)

219-294-8124 

(Factory Service)

Internet:

http://www.crownaudio.com

polyurethane or wooden crates, any other
packing material will not be sufficient to
withstand the stress of shipping. 

Do not use

loose, small size packing materials.

3. 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 documentation, cables and
other hardware.

If you have any questions, please call or write the
Crown Technical Support Group.

Содержание Pulse 21100

Страница 1: ...Professional Power Amplifier User Manual...

Страница 2: ...Level controls 1 and 2 9 c Bridge switch 9 6 0 Indicators 10 A AC Present 10 B Operate 10 C Fault 10 D Temp 1 2 10 E Signal 10 F Clip 11 G Bridge 11 7 0 Typical applications 12 a Two channel stereo o...

Страница 3: ...rounding type plug has two blades and a third grounding prong The wide blade or the third prong is provided for your safety If the provided plug does not fit into your outlet consult an electrician fo...

Страница 4: ...mplifiers that are capable of maintaining excellent performance when being driven to their limit with real loudspeaker loads Sonic performance is always in the forefront of our minds and to this end t...

Страница 5: ...air so fan filters will not normally be required If however the amplifier is to be used in an environment where the intake air might be excessively dirty optional external fan filters should be purch...

Страница 6: ...60Hz AC power Acceptable AC input supply voltage ranges from 180V to 265V The application of voltages above those specified may cause permanent damage that is not covered by your warranty Lower volta...

Страница 7: ...removable terminal block earth symbol pin pin 1 of the XLR s and the phone jack SLEEVE are internally connected to the chassis The screen of the input cable should always be connected to one of these...

Страница 8: ...Bridge wiring Stereo wiring 1 1 A u d i o C o n n e c t i o n s 1 1 Bridge mono operation To use the amplifier in bridge mode for binding post connection the speakers must be connected between two RE...

Страница 9: ...ely 90dBu with the controls fully counter clockwise to 1dBu with the controls full clockwise 1dBu equals approximately 870mV RMS and this level will be just sufficient with a 4 Ohm load and nominal AC...

Страница 10: ...Under some circumstances the Fault light might flash with a period of about 3 seconds along with the Power light and various clicking noises This is because the processor is trying to power up the amp...

Страница 11: ...ow an impedance speaker load or any other mechanism that causes the output of the amplifier channel to not be as expected by the monitoring circuit Note that if the amplifier channel is muted by the m...

Страница 12: ...more information about how to calculate impedance b Two amplifiers used in bridge mode Here one amplifier is being used per channel As the amplifiers are being operated in bridge mode each is capable...

Страница 13: ...e any impedance between an open circuit and 2 ohms when in stereo and between an open circuit and 4 ohms when bridged When more than 1 speaker is used it is easy to calculate the total impedance but r...

Страница 14: ...r channels to make one channel capable of providing approximately twice the power into a single load This load must be connected across the two positive channel outputs Clip or Clipping The term used...

Страница 15: ...cycle per second is equal to 1Hz The audio band is generally restricted to frequencies of 20Hz to 20 000Hz 20kHz Frequency Response The equipment s relative gain compared to frequency Generally expres...

Страница 16: ...h 10 times 20dB or so above the normal operating level of the audio equipment and may cause distortion if headroom is inadequate Speakon A type of connector manufactured by Neutrik with either 2 4 or...

Страница 17: ...n 0 008 THD 1kHz 1dB below clip 22kHz measurement bandwidth Frequency Response 20Hz to 20kHz 0 0 2dB 2Hz to 120kHz 0 3dB Controls Power switch bridge mode switch indented level controls these may be m...

Страница 18: ...type Speakons are rotated in the socket Problem Distorted sound Check Are the Clip lights on Is any equipment before the amp being over driven Are any speaker cables shorted Are the loudspeakers too...

Страница 19: ...t flashing The Operate and Fault light may be flashing very slowly accompanied by internal clicking A fault has been detected with one or more of the amplifier channels and the processor has shut down...

Страница 20: ...r amplifier This information is available on the Crown website or by contacting Crown Audio Customer Service see details panel 2 To ensure the safe transportation of your unit to the factory ship it i...

Страница 21: ...er the warranty period that the new Crown product is free of defects in materials and workmanship We further warrant the new Crown product regardless of the reason for failure except as excluded in th...

Страница 22: ...n of Harman International Industries Version 2 0 CB 050901 ZM10090 01 Crown Part Number 133785 1 Crown is a registered trademark of Crown International Other trademarks are the property of their respe...

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