Gebruiksaanwijzing /service van het product 2650 van de fabrikant Crown Audio
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P rofessional P ower Amplifier User Manual.
2 Contents Safety Information ................................................................................... 3 1.0 Introduction & Unpacking ..................................................................... 4 2.0 Mechanical Installation ..
3 DO NOT REMOVE COVERS. NO USER SER VICEABLE P AR TS INSIDE. REFER SER VICING T O QUALIFIED SER VICE PERSONNEL. THIS EQUIPMENT MUST BE GROUNDED. IT SHOULD NOT BE NECESSAR Y T O REMOVE ANY PROTECTIVE GROUND OR SIGNAL CABLE SHIELD CONNECTIONS T O PREVENT GROUND LOOPS.
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.
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 3.0 AC P ower Connection W ARNING! 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.
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.
8 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.
9 5.0 Control oper ation a. P ower Switch P ressing 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.
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 .
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.
12 7.0 T ypical applications a. T wo channel (stereo) operation In this example, each channel of the PULSE 2x650 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.
13 T ypical applications... c. T wo amplifiers for stereo with a mono sub-bass Here T wo amplifiers are used with an active crossover to provide a separate sub-bass signal. d. Calculating Impedance Measured in ohms, impedance is a measure of AC resistance.
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.
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.
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.
17 9.0 Specifications P ower Ratings Pulse 2x650 Stereo Measured per channel, both channels driven at 1kHz to no more than 0.1% THD+N 8 ohms 400W rms 4 ohms 650W rms 2 ohms 850W rms * * Note: 2 ohm sp.
18 10.0 T roubleshooting Checklist Problem: No output Check: Are the AC Present and Operate lights on ? Are the F ault & T emp 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).
19 T roubleshooting... 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.
20 Crown amplifiers are quality units that rarely require servicing. Before returning your unit for servicing, please contact Crown T echnical Support to verify the need for servicing. This unit has very sophisticated circuitry which should only be serviced by an authorized Crown Service Center .
WORLDWIDE EXCEPT USA & CANADA SUMMARY OF WARRANTY Crown International, 1718 West Mishawaka Road, Elkhart, Indiana 46517- 4095 U.S.A. warrants to you, the ORIGINAL PURCHASER and ANY SUBSEQUENT OWNE.
22 A division of Harman International Industries V ersion 2.0 CB 190901 ZM10092-01 Crown P art Number: 133784-1 Crown is a registered trademark of Crown International.
Een belangrijk punt na aankoop van elk apparaat Crown Audio 2650 (of zelfs voordat je het koopt) is om de handleiding te lezen. Dit moeten wij doen vanwege een paar simpele redenen:
Als u nog geen Crown Audio 2650 heb gekocht dan nu is een goed moment om kennis te maken met de basisgegevens van het product. Eerst kijk dan naar de eerste pagina\'s van de handleiding, die je hierboven vindt. Je moet daar de belangrijkste technische gegevens Crown Audio 2650 vinden. Op dit manier kan je controleren of het apparaat aan jouw behoeften voldoet. Op de volgende pagina's van de handleiding Crown Audio 2650 leer je over alle kenmerken van het product en krijg je informatie over de werking. De informatie die je over Crown Audio 2650 krijgt, zal je zeker helpen om een besluit over de aankoop te nemen.
In een situatie waarin je al een beziter van Crown Audio 2650 bent, maar toch heb je de instructies niet gelezen, moet je het doen voor de hierboven beschreven redenen. Je zult dan weten of je goed de alle beschikbare functies heb gebruikt, en of je fouten heb gemaakt die het leven van de Crown Audio 2650 kunnen verkorten.
Maar de belangrijkste taak van de handleiding is om de gebruiker bij het oplossen van problemen te helpen met Crown Audio 2650 . Bijna altijd, zal je daar het vinden Troubleshooting met de meest voorkomende storingen en defecten #MANUAl# samen met de instructies over hun opplosinge. Zelfs als je zelf niet kan om het probleem op te lossen, zal de instructie je de weg wijzen naar verdere andere procedure, bijv. door contact met de klantenservice of het dichtstbijzijnde servicecentrum.
