Crown Audio Pulse 21100 user manual

User manual for the device Crown Audio Pulse 21100

Device: Crown Audio Pulse 21100
Category: Stereo Amplifier
Manufacturer: Crown Audio
Size: 2.95 MB
Added : 7/17/2013
Number of pages: 22
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Summary of the content on the page No. 1

Professional Power Amplifier
User Manual

Summary of the content on the page No. 2

Contents Safety Information .................................................................................. 3 1.0 Introduction & Unpacking .................................................................... 4 2.0 Mechanical Installation ........................................................................ 5 3.0 AC Power Connection ......................................................................... 6 4.0 Audio Connections ..............................................................

Summary of the content on the page No. 3

Safety Information DO NOT REMOVE COVERS. NO USER Important Safety Instructions SERVICEABLE PARTS INSIDE. 1) Read these instructions. REFER SERVICING TO QUALIFIED SERVICE 2) Keep these instructions. PERSONNEL. 3) Heed all warnings. THIS EQUIPMENT MUST BE GROUNDED. IT 4) Follow all instructions. SHOULD NOT BE NECESSARY TO REMOVE ANY 5) Do not use this apparatus near water. PROTECTIVE GROUND OR SIGNAL CABLE 6) Clean only with a dry cloth. SHIELD CONNECTIONS TO PREVENT GROUND LOOPS. ANY SUCH DISCONN

Summary of the content on the page No. 4

1.0 Introduction & Unpacking Front panel Rear panel Introduction The PULSE series of amplifiers are high performance professional power amplifiers capable of delivering major power output from a new generation of switched mode power supplies. All Pulse series amplifiers are housed in the same size 2U cases and feature light, powerful switching power supplies along with massive heatsinks and two dual-speed cooling fans. Microprocessor supervision of the power supplies, protection and thermal sy

Summary of the content on the page No. 5

2.0 Mechanical Installation A vertical rack space of 2U (88mm high) is required, with an in rack depth of 18.1 inches (460mm). The amplifier protrudes 1.6 inches (40mm) from the rack supports. Mounting & unit dimensions If the unit is likely to undergo extreme vibration through trucking and touring, front rack ear reinforcement brackets and rear mounting plates must be fitted. These are available from your dealer. Damage caused by insufficient support is not covered by the warranty. To prevent d

Summary of the content on the page No. 6

3.0 AC Power Connection WARNING! THIS APPLIANCE MUST BE GROUNDED. The amplifier must always be connected to a 3-wire grounded AC outlet. The rack framework must also be connected to the same grounding circuit. The unit must NOT be operated unless the power cables' ground wire is properly terminated - this is important for personal safety as well as for proper control over the system grounding. The wires in the power lead are color coded as follows: Green and Yellow......Ground Blue......Neutral

Summary of the content on the page No. 7

4.0 Audio Connections Inputs For each channel, there is a 1/4” phone jack socket, male & female XLR and pluggable removable terminal block connectors provided for signal input on the rear panel of the amplifier. Each is electronically balanced at an impedance greater than 10k ohms. The removable terminal block, phone jack and both XLR connectors are internally wired in parallel, and therefore any socket may be used for the input signal. The connectors not used in this manner function as loop-thr

Summary of the content on the page No. 8

Audio Connections... Stereo wiring Outputs ® Both binding post and Speakon connectors are provided for each channel, these are internally wired in parallel so either or both may be used. Note that it is possible to lever the caps out of the ends of the binding posts to insert 4mm banana type plugs but this will invalidate the product safety approvals in some territories. The side entry positions for these connectors should therefore be used if possible. Stereo operation If you are using the bind

Summary of the content on the page No. 9

5.0 Control operation a. Power Switch Pressing this switch so that the white dot is closest to the front panel signals to the microprocessor that the user wishes to turn on the power supply. Note that the microprocessor will only switch the power supply on once it has assured that there are no internal faults. From the first application of AC power it takes approximately 7 seconds to complete these tests. During the test time the microprocessor will flash both the TEMP lights and the FAULT light

Summary of the content on the page No. 10

6 . 0 Indicators A. AC Present This light glows when AC power is applied to the amplifier, whether or not the amplifier is actually running. This light will still glow even if the rear panel fuse is blown because it is powered from the separate, internally fused supply that powers the microprocessor. B. Operate Illuminated when the main power supply is switched on using the front panel switch. C. Fault If, for any reason, the microprocessor detects a problem then this light comes on. If it is no

Summary of the content on the page No. 11

Indicators... F. Clip This light is in fact rather more sophisticated than a simple clip indicator; it actually measures distortion. This may occur either due to clipping, trying to drive too low 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 microprocessor and a signal is applied, the clip light will come on. G. Bridge If this light is on it indic

Summary of the content on the page No. 12

7.0 Typical applications a. Two channel (stereo) operation In this example, each channel of the PULSE 2x1100 is being used independently. For this application, ensure that the rear panel BRIDGE switches are in the NORMAL position. More than one speaker may be used on each channel as long as the total impedance is not less than 2 ohms. See section d for more information about how to calculate impedance. Stereo L 1 R 2 1 2 for example - both speakers up to 1100W 4 ohms b. Two amplifiers used in br

Summary of the content on the page No. 13

Typical applications... c. Two amplifiers for stereo with a mono sub-bass Here Two amplifiers are used with an active crossover to provide a separate sub-bass signal. LR Stereo 1 2 2 1 Bridge 1 2 Sub speaker - 2200W 8 ohms main (mid-high) speakers - 1100W 4 ohms d. Calculating Impedance Measured in ohms, impedance is a measure of AC resistance. Loudspeakers generally come in 16, 8 or 4 ohm varieties. Amplifiers have a lower limit to what impedance they can drive without being overloaded, there i

Summary of the content on the page No. 14

8 . 0 Glossary In this section many of the terms used throughout this manual are explained in more detail. Active Active electronic circuits are those which are capable of voltage and power gain by using transistors and integrated circuits. Amplitude Refers to the voltage level or intensity of a signal, and is usually measured in volts or decibels. Balanced A three wire connection in which two of the wires carry the signal information, the third acts as a shield tied to chassis ground. The two s

Summary of the content on the page No. 15

Glossary... dBu or dBv The addition of a lower case ”u” or “v” after dB indicates an absolute scaling for the dB ratio. 0dBu (or 0 dBv) = 778mV or 0.778 Volts, and it has no regard for power or impedance. This term is widely used for expressing signal voltages in modern audio equipment with high input impedances and low output impedances. For dBv the same scale is used as for dBu above, except that 0dBV = 1.0 Volts. Distortion Any modification of a signal which produces new frequency components

Summary of the content on the page No. 16

Glossary... Removable terminal block One of the names given to a pluggable terminal block suitable for use with audio where connection to permanent wiring makes their use more suitable than XLR or Jack connectors. Transient A sudden burst of energy in an audio signal which only lasts for a small period of time relative to the rest of the signal. The level of these transients can often reach 10 times (+20dB) or so above the normal operating level of the audio equipment, and may cause distortion i

Summary of the content on the page No. 17

9 . 0 Specifications Power Ratings Pulse 2x1100 Stereo Measured per channel, both channels driven at 1kHz to no more than 0.1% THD+N 8 ohms 700W rms 4 ohms 1100W rms 2 ohms 1500W rms* * Note: 2 Ohm spec is at 1% THD Bridged Mono 16 ohms 1200W rms 8 ohms 2200W rms 4 ohms 3000W rms* * Note: 4 Ohm bridged spec is at 1% THD Input Sensitivity +1dBu for full output Input Impedance 20 kohm Input Connectors 1/4-inch TRS balanced phone jack, removable terminal block, male and female XLR Distortion <0.008

Summary of the content on the page No. 18

10.0 Troubleshooting Checklist Problem: No output Check: Are the AC Present and Operate lights on? Are the Fault & Temp lights off? Are the Signal lights on? Are the level controls turned up? Are the speakers properly connected? (in particular check that older style ‘ring lock’ 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 low an impedanc

Summary of the content on the page No. 19

Troubleshooting... Status Indication There is a microprocessor inside each PULSE amplifier responsible for monitoring all critical systems. The status of which are displayed on the front panel lights. Their indication is as follows: Fault and both Temp lights flashing The amplifier has just been plugged in and the microprocessor is carrying out a test sequence. This is normal and will stop after about 7 seconds. Power light on, Operate light off, Fault light on & flashing The microprocessor has

Summary of the content on the page No. 20

11.0 Serv ice & Warranty Crown amplifiers are quality units that rarely require polyurethane or wooden crates, any other servicing. Before returning your unit for servicing, packing material will not be sufficient to please contact Crown Technical Support to verify the withstand the stress of shipping. Do not use need for servicing. loose, small size packing materials. This unit has very sophisticated circuitry which should only be serviced by an authorized Crown Service Center.. This is one re


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