Related Manuals for Crest Audio 8002
Summary of Contents for Crest Audio 8002
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Page 1: Power Amplifier
8002 power amplifier Professional Power Amplifier Ch A 8002 Signal Status ØdB ØdB Ch B... -
Page 2: Important Precautions
important precautions Save the carton and packing materials! Should you ever need to ship the unit, use only the original factory packing. For replacement packaging,call Crest Audio’ s Customer Service Department directly. Read all documentation before operating your equipment. Retain all documentation for future reference. -
Page 3: Table Of Contents
how to use this manual introduction installation unpacking mounting cooling and ventilation powering maintenance features overview front panel rear panel operation modes stereo parallel bridged connections p.21 input output safety p.27 tourclass protection precautions user responsibility service and support support contact us registration specifications... -
Page 4: How To Use This Manual
how to use this manual conventions terms official Crest Audio features and each indicator or control on the amplifier will appear as: terms actions specific actions or selections the user can execute will appear as: actions tasks are broken down into steps warnings Procedures not to attempt. -
Page 5: Introduction
welcome Congratulations on your purchase of a new Pro II Series professional power amplifier, and thank you for your confidence in Crest Audio prod- ucts.You are among the growing number of audio professionals who have made Crest Audio one of the world’s leading suppliers of professional and commercial/industrial audio systems. - Page 6 p. 4...
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Page 7: Unpacking
what to do with the shipping carton proper rack-mounting technique keeping the amplifier cooled grounding the amplifier required line voltages routine maintenance practices installation unpacking mounting cooling and ventilation powering maintenance p. 5... - Page 8 installation unpacking Please inspect the amplifier carefully immediately after unpacking. If you find any damage, notify your supplier/dealer immediately. Only the shipper may file a damage claim with the carrier for damage incurred during shipping. Be sure to save the carton and all packing materials for the carrier’s inspection. If the packing materials are in good condition, please save them.
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Page 9: Mounting
All Pro II Series amplifiers mount in standard 19-inch racks. Four front-panel mounting holes are provided on each amplifier.Rear mounting ears give addi- tional support, and use of rear supports is highly recommended in all mobile and touring sound systems. Handles are fitted standard. 8002 shown Professional Power Amplifier front height 5.25"... -
Page 10: Cooling And Ventilation
installation cooling and ventilation Pro II Series amplifiers use a twin-tunnel forced-air cooling system to main- tain a low, even operating temperature. Drawn in by dual 105 air flows through the cooling fins of the channel heat-sinks,dissipating power transistor heat then exhausts through the front panel slots. -
Page 11: Powering
powering Unless otherwise specified when ordered, Pro II amplifiers shipped to cus- tomers are configured as follows: North America 90–255 Europe 180–255 Asia 180–255 Australasia 180–255 South America 90–255 Japan 90–255 maintenance A Pro II Series amplifier requires no routine maintenance other than the occasional cleaning or replacement of the fan intake filters on the rear of the amplifier. - Page 12 p. 10...
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Page 13: Features Overview
location of connectors and controls legend of panel symbols features overview front panel rear panel p. 11... - Page 14 8002 shown Professional Power Amplifier p. 12 Signal Status - 10 - 10 - 15 - 15 - 30 - 30 - 80 - 80 ØdB ØdB Ch A Ch B Pro II owner’s manual 8002...
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Page 15: Input Attenuators
front panel Rack Mounting Ears Two front-panel mounting holes are provided on each mounting ear. Rack Handles Fan Outlet Grills Pro II Series amplifiers are cooled by two, rear-mounted fans. Cool air flows over the heat sinks and exhausts through the front grills. Make sure these outlets remain clear to allow unrestricted airflow. -
Page 16: Rear Panel
8002 shown rear panel Output Connectors Pro II Series power amplifiers are supplied with both high-current five- way binding posts and Speakons installed. Binding posts: one pair per channel. Speakons: one connector per channel, plus a third connector configured for bridged-mono operation. - Page 17 rear panel Female Balanced Input Connectors Male Balanced Input Connectors These connectors accept input signals on balanced male and female input plugs. Connectors for each channel are in parallel; any unused connectors may be used for daisy-chaining input connec- tions to other amplifiers. In Parallel and Bridge Mono mode a signal applied to channel A’s input connectors will appear also at channel B’...
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Page 19: Bridged
choosing the appropriate mode switching between operation modes keeping the amplifier cooled special considerations when using bridged mode operation modes stereo parallel bridged p. 17... -
Page 20: Mode Selection
operation modes mode selection The three-position, recessed Mode Select switch (located on the rear panel) configures the amplifier for Stereo, Parallel or Bridged mode. Amplifiers are factory-configured for Stereo mode. stereo In Stereo mode, both channels operate independently, with their input atten- uators controlling their respective levels.Signal at Channel A’s input produces output at Channel A’s output,while signal at Channel B’... - Page 21 operation modes p. 19...
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Page 23: Input
proper wiring schemes for connectors: correct signal paths: stereo, parallel, and bridged connections speakon binding post input output p. 21... -
Page 24: Output
connnections inputs Use either male or female nals to the inputs of your Crest Audio Pro II Series amplifier. Pro II Series amplifiers are configured standard with pin 2 hot on The input polarity switch can configure pin 3 hot if required. male 1 - Ground ( ) 3 - Negative (-) -
Page 25: Bridged Mono Mode
stereo mode five-way binding post connectors parallel mode five-way binding post connectors bridged mono mode five-way binding post connectors connections Unused connectors can be utilized to daisy-chain a signal source to additional amplifiers. Unused connectors can be utilized to daisy-chain a signal source to additional amplifiers. -
Page 26: Output
connnections stereo mode speakon output connectors parallel mode speakon output connectors bridged mono mode speakon output connectors p. 24 Pro II owner’s manual Unused connectors can be utilized to daisy-chain a signal source to additional amplifiers. Unused connectors can be utilized to daisy-chain a signal source to additional amplifiers. - Page 27 connections p. 25...
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Page 29: Tourclass Protection
the owner’s role in amplifier safety description of TourClass protection features protecting your speakers safety user responsibility speaker protection TourClass p. 27... - Page 30 safety Pro II owner’s manual user responsibility Your Pro II Series amplifier is very powerful and can be potentially dan- gerous to loudspeakers and operators alike. It is your responsibility to read see the inside-front cover ) and make important precautions sure that the amplifier is installed, wired, and operated properly as instructed in this manual.
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Page 31: Tourclass Protection
speaker protection All loudspeakers have electrical, thermal, and physical limits which must be observed to prevent damage or failure. Cone or compression drivers can be damaged ( sometimes to the point of failure ) from excessive power, low frequencies applied to high frequency drivers, severely clipped waveforms, voltage. -
Page 32: Tourclass Protection
safety TourClass protection ® Every model in the Pro II Series incorporates TourClass protection fea- tures. Derived from Crest Audio’s extensive experience with the world’s largest sound rental companies, the TourClass group of circuits sets the industry standard for assured protection of internal amplifier circuits and all connected loads. - Page 33 safety DC Voltage If an amplifier channel detects voltage at its output terminals, the out- put relay will immediately open to prevent loudspeaker damage.The Status will turn red. LEDs Subsonic Frequencies Built-in high pass filtering provides subsonic frequency protection for each channel.
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Page 35: Contact Us
when to get support ways to contact Crest Audio service and support support contact us p. 33... -
Page 36: Contact Us
service and support support In the unlikely event that your amplifier develops a problem, it must be returned to an authorized distributor, service center or shipped directly to our factory. To obtain service, contact your nearest Crest Audio Service Center, Distributor, Dealer, or any of the worldwide Crest Audio offices. -
Page 37: Support
service and support p. 35... -
Page 38: Specifications
8002 Stereo power 8 Ω Ω Ω Bridged mono power 8 Ω Ω Maximum output voltage Frequency response Ω Power bandwidth rated power Ω % THD+N SMPTE IMD Damping factor Input CMRR Switch-configurable input options Input impedance Hum and noise... -
Page 39: Block Diagram
block diagram p. 37... -
Page 40: Wire Gauge
wire gauge stranded cable length meters meters meters meters p. 38 wire gauge 8Ω load 4Ω load 2.9% 5.6% 1.74 0.75 1.16 0.58 1.16 0.35 0.70 0.22 0.44 4.3% 8.2% 0.75 1.45 0.87 1.74 0.55 1.09 0.37 0.73 8.24% 5.5% 0.75 10.8 1.74... - Page 41 stranded cable length wire gauge feet feet feet feet power loss 8 Ω load 4 Ω load 2 Ω load 0.81% 1.61% 3.2% 0.51 1.02 0.32 0.64 1.28 0.20 0.40 0.80 0.128 0.25 0.51 1.61% 3.2% 6.2% 1.02 0.64 1.28 0.40 0.80 1.60...
- Page 42 Crest Audio Inc. 100 Eisenhower Dr., Paramus NJ 07652 USA : 201.909.8700 : 201.909.8744 *A4400076* v. 1.0 http://www.crestaudio.com...
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