Pro 200 Series 5200/7200/8200/9200 Owner`s Manual
Contents
1. 17 Exposure to extremely high noise levels may cause a permanent hearing loss Individuals vary considerably in susceptibility to noise induced hearing loss but nearly everyone will lose some hearing if exposed to sufficient ly intense noise for a sufficient time The U S Government s Occupational and Health Administration OSHA has specified the following per missible noise level exposures Sound Duration Per Day In Hours Sound Level dBA Slow Response 8 90 6 92 4 95 3 97 2 100 I 1 2 102 105 1 2 110 1 4 or less 115 According to OSHA any exposure in excess of the above permissible limits could result in some hearing loss Ear plugs or protectors inserted into the ear canals or over the ears must be worn when operating this amplification sys tem in order to prevent a permanent hearing loss if exposure is in excess of the limits listed above To ensure against potentially dangerous exposure to high sound pressure levels it is recommended that all persons exposed to equip ment capable of producing high sound pressure levels be protected by hearing protectors SAVE THESE INSTRUCTIONS SE BALOO Table Of Contents How To Use This Manual Introduction Terms amp Conventions Installation Unpacking Mounting Cooling Requirements Additional Guidelines Maintenance Features Overview Front Panel Rear Panel Operation Modes Stereo Parallel Bridged Content2. CREST AUDIO IN PRO 200 Series Amplifier Owner s Manual a O ACL 28 CREST AUDIO Professional Power Amplifier an CD CH Signal Temp O DRORORO RO RODRO ROC ctive e x 200 HIE Son BI Son On HN KR i i eg 30 r A SE W W W AA Zi A CO oa on dE Intended to alert the user to the presence of uninsulated dangerous voltage within the product s enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons Intended to alert the user of the presence of important operating and maintenance servicing instruc A tions in the literature accompanying the product CAUTION Risk of electrical shock DO NOT OPEN CAUTION To reduce the risk of electric shock do not remove cover No user serviceable parts inside Refer servicing to qualified service personnel WARNING To prevent electrical shock or fire hazard do not expose this appliance to rain or moisture Before using this appliance read the operating guide for further warnings Este simbolo tiene el prop sito de alertar al usuario de la presencia de voltaje peligroso sin ais A lamiento dentro de la caja del producto y que puede tener una magnitud suficiente como para consti tuir riesgo de descarga el ctrica Este s mbolo tiene el prop sito de a
3. Sleeve Ground 4 2 Positive Outputs Speakers are connected using the high current five way binding posts or Speakon connectors or both Stereo Parallel M Bridged Mono 2 4 Die Eh 2 0 C 2 4 1 Speaker to PIN I Speaker to PIN Speaker to PIN l Speaker to PIN 2 p 16 When using Pro 200 Series amplifier with EI other amplifiers be sure to check the XLR polarity of those amplifiers Some amplifiers use pin 3 and pin 2 Mis matched polari ty across multiple amplifiers could cause undesirable system performance Very high current is A available at the outputs Please connect your output cable to the and terminals of each sec tion precisely as shown Connections Stereo Mode 5 way binding post connectors Parallel Mode 5 way binding post connectors A sa PIN ca H Ze X PENS VEN Y Bridged Mono Mode 5 way binding post connectors Bridged Mono ADO p 17 Connections Stereo Mode Speakon output connectors S B Rtg EE Speaker to PIN Speaker to PIN I Parallel Mode 2 Speakon output connectors B
4. tors heat registers stoves or other apparatus that pro duce heat 9 Do not defeat the safety purpose of the polarized or grounding type plug A polarized plug has two blades with one wider than the other A grounding type plug has two blades and a third grounding plug The wide blade or third prong is provided for your safety If the provided plug does not fit into your outlet consult an electrician 10 Protect the power cord from being walked on or pinched particularly at plugs convenience receptacles and the point they exit from the apparatus IT Only use attachments accessories provided by the manufacturer 12 Use only with a cart stand tripod bracket or table specified by the manufacturer or sold with the appara tus When a cart is used use caution when moving the cart apparatus combination to avoid injury from tip over 13 Unplug this device during lightning storms or when unused for long periods of time 14 Refer all servicing to qualified service personnel Servicing is required when the device is damaged in any way such as liquid has been spilled or objects have fallen into the device the unit has been exposed to rain or moisture does not operate normally or has been dropped 15 Never break off the ground pin Connect only to a power supply of the type marked on the unit adjacent to the power supply cord 16 If this product is to be mounted in an equipment rack rear support should be provided
5. 5200 1 800W 1kHz at lt 0 1 TH D 850W 1kHz at lt 0 05 TH D 525W 1kHz at lt 0 01 TH D 290W 1kHz at lt 0 01 TH D 950W 1kHz at lt 0 02 TH D 550W 1kHz at lt 0 01 TH D 300W 1kHz at lt 0 005 TH D 20 52 volts 10Hz 100kHz 0 34B 10Hz 60kHz 0 3dB gt 300 1 20Hz 1kHz gt 85 dB 1kHz 1 12 volts 3 2 24 volts 3 15 k Ohms balanced gt 110dB gt 65 dB lt 15V us lt 0 1 800W ch lt 0 05 500W ch lt 0 05 275W ch 20 1 380W 40 875W 20 2 100W 40 1 310W 7200 3 300W 1kHz at lt 01 TH D 1 650W 1kHz at lt 0 1 THD 1 000W 1kHz at lt 0 1 TH D 590W 1kHz at lt 0 05 THD 2 000W 1kHz at lt 0 1 THD 1 150W 1kHz at lt 0 05 THD 625W 1kHz at lt 0 05 THD 20 75 volts 10Hz 100kHz 0 34B 10Hz 50kHz 0 34B gt 300 1 20Hz 1kHz gt 85 dB 1kHz 1 58 volts 3 3 16 volts 3 15 k Ohms balanced gt 110dB gt 70 dB lt 15V us H lt 0 2 1 475W ch lt 0 15 950W ch lt 0 1 550W ch 20 1 400W 40 875W 20 3 900W 40 2 500W 2 variable speed high output DC fans 8200 4 500W 1kHz at lt 0 1 THD 2 250W 1kHz at lt 0 1 THD 1 450W 1kHz at lt 0 05 THD 825W 1kHz at lt 0 05 THD 2 800W 1kHz at lt 0 1 THD 1 600W 1kHz at lt 0 05 TH D 880W 1kHz at lt 0 05 THD 20 90 volts 10Hz 100kHz 0 34B 10Hz 50kHz 0 3dB gt 300 1 20Hz 1kHz gt 85 dB 1k
6. Wire Gauge Stranded Cable Length 2 5 meters 1 0 meters 3 0 meters SACS Wire Gauge 0 3mm 0 5 0 75 5 25 4 0 0 5mm 0 75 2 5 0 5mm 0 75 25 0 75mm 1 5 10 8Q load 29 74 116 0 58 0 35 0 22 4 3 29 1 45 0 87 0 55 0 37 8 24 5 6 29 1 74 1 09 0 73 15 5 8 2 5 1 3 2 2 2 Power Loss 4Q load 5 6 3A 25 1 16 0 70 0 44 8 2 5 6 29 1 74 1 09 0 73 5 5 10 8 5 6 29 1 74 1 09 0 73 15 5 9 8 6 3 4 3 2 6 20 load 10 8 6 7 45 De 0 87 15 5 10 8 5 6 3 4 22 1 45 28 19 9 10 8 6 7 43 29 45 28 18 2 12 0 8 2 5 1 p 27 Wire Gauge Stranded Cable Length 5 feet 1 0 4 0 feet 8 0 feet p 28 Wire Gauge 8AWG 6 8AWG 8AWG O N A a 8AWG O N E 80 load 0 81 0 51 0 32 0 20 0 128 1 61 1 02 0 64 0 40 6 2 4 0 D5 1 60 1 01 0 60 11 9 77 5 0 3 2 2 0 1 20 Power Loss 40 load 1 61 1 02 0 64 0 40 0 25 3 2 20 1 28 0 80 0 5 11 9 VA 50 JA 20 1 20 22 14 6 9 6 6 2 4 0 24 2Q load 3 2 2 0 1 28 0 80 0 51 6 2 40 25 1 60 LOI 22 14 6 9 6 6 2 4 0 Aa 37 26 17 8 11 8 7 7 4 7 CREST AUDIO http www crestaudio com Pro 200 Owner s Manual Version 1 1 11 02
7. Ramp Signal Control Whenever a Pro 200 Series amplifier powers up or comes out of a protect mode the Auto Ramp circuit activates While the speakers are disconnected the Auto Ramp circuit fully attenuates the signal After the output relay closes the signal slowly and gradually rais es up to its set level The Auto Ramp Signal Control circuit has some important advan tages over the conventional instant on circuits Ifa signal is present during power up or when coming out of a protect mode the speak ers are spared a sudden potentially damaging burst of audio power 2 Because the gain is reduced until after the output relay closes no arcing occurs at the contacts thereby extending their useful life p 22 Service Support amp Warranty When to get support Support gt Ways to contact Crest Audio Contact Crest Warranty SE Service Support amp Warranty Support In the unlikely event that your amplifier develops a problem it must be returned to an authorized distributor service center or shipped direct ly to our factory Because of the complexity of the design and the risk of electrical shock all repairs must be attempted only by gualified tech nical personnel If the unit needs to be shipped back to the factory it must be sent in its original carton If improperly packed the unit may be damaged EE packaging call Crest To obtain service contact your nearest Crest Audio Service Center Audio s Cust
8. AD THE IMPORTANT PRECAUTIONS SECTION AS WELL AS THE INPUT OUTPUT AND POWER CONNECTION SECTIONS OF THIS MANUAL Conventions Warnings Procedures not to attempt A Issues or hazards to keep in mind when operating the equipment Indicators What to look for on Jet the eguipment display gt Alerts indicators or prompts that may appear Tips Preferred methods Si Helpful hints Feature insights See See refers to other sections of the manual containing supplementary information on the current topic or a related issue Note Note supplementary feature information Y What to do with the shipping carton Y Proper rack mounting technique Y Keeping the amplifier cooled Y Tips for trouble free operation M Routine maintenance practices SE Installation Unpacking Mounting Cooling Reguirements Additional Guidelines Maintenance o Installation Pro 200 Series Owner s Manual e Unpacking Upon unpacking be sure to inspect the amplifier If you find any damage notify your supplier immediately Only the consignee may institute a claim with the carrier for E Si damage incurred during shipping Be sure to save the carton and all packing materials ae o Saas Should you ever need to ship the unit use only the original factory packing If the ship Department directly ping carton is unavailable contact Crest to obtain a replacement ers wore Mounting Pro 200 Series amplifiers
9. Hz 1 87 volts 3 3 74 volts 3 15 k Ohms balanced gt 110dB gt 70 dB lt 15V us lt 0 2 1 900W ch lt 0 15 1 300W ch lt 0 15 775W ch 20 1 875W 40 1 250W 20 4 350W 40 3 050W Input Combined female TRS XLR Output 5 Way Binding Post amp Speakon Power 20A IEC Mains Front Panel Attenuator 2 Rear Panel Mode and Gain switches 2 each ACL Signal Temp DC Active 25 lbs 11 34 kg 27 Ibs 12 25 kg Thermal DC Turn on bursts subsonic incorrect load 16 gauge steel with 5mm aluminum front panel 3 5 x 19 x 12 25 1 5 rear support ears 89mm x 483mm x 311mm 38mm rear support ears All power measurements made at 120 VAC 2 Ohm sine wave power is time limited by magnetic circuit breaker and internal protection circuit SACS p 25 Block Diagram Channel A Inputs Female 3 Pin XLR A ATTENUATOR lt a Channel A Outputs 5 Way Binding Posts Vv s OUTPUT RELAY OUTPUT STAGE Neutrik Speakon Channel B Inputs Female 3 Pin XLR p 26 B ATTENUATOR H C B O 0 Channel B Outputs 5 Way Binding Posts A MODE SWITCH A STEREO B PARALLEL C BRIDGE OUTPUT RELAY OUTPUT STAGE Neutrik Speakon SEE SECTION 5 FOR OUTPUT CONNECTION DETAILS
10. IER i Mr 1 Speaker to PIN Speaker to PIN I A wr AAD CU 5 A X lerss B ES LTD A Bridged Mono Mode Speakon output connectors 2 a Bridged Mono gt zd S Speaker to PIN I p 18 Safety gt The owners role in amplifier safety gt Protecting your speakers gt Description of protection features SE User Responsibility Speaker Protection Protection Features p 19 Safety User Responsibility Your Pro 200 Series amplifier is very powerful and can be potentially dangerous to loud speakers and operators alike It is your responsibility to read all precautions and make sure that the amplifier is installed wired and operated properly as instructed in this manual Many loudspeakers can be easily damaged or destroyed by overpowering especially with the high power available from a bridged amplifier Always be aware of the speakers con tinuous and peak power capabilities Crest Audio is not responsible for damage to loud speakers for any reason Speaker Protection All loudspeakers have electrical thermal and physical limits which must be observed to prevent damage or failure Too much power severely clipped wave forms low frequencies applied to high frequency drivers and DC voltage can al
11. ed When a problem occurs that causes a channel to go into a protection mode the Temp LED or DC LED for that channel will glow DC voltage on the output excessive subsonic fre quencies or thermal overload will cause the channel s output relay to open disconnect ing the speaker load until the condition is corrected Automatic Clip Limiting ACL Any time a channel is driven into hard continuous clipping the clip limiter circuit will auto matically reduce the channel gain to a level just slightly into clipping which protects the speakers against the damaging high power continuous square waves Situations that may activate the clip limiter include uncontrolled feedback oscillations and improper equip ment setting or a malfunction upstream from the amplifier Normal program transients will not trigger the clip limiter only steady excessive clipping will The ACL LED will glow brightly and continuously when limiting occurs IGM Impedance Sensing Pro 200 Series amplifiers feature innovative circuitry that allows safe operation into any load When an amplifier sees a load that overstresses the output stage the Instantaneous Gain Modulation IGM circuit adjusts the channel gain to a safe level This method of out put stage protection is far superior to the conventional brute force type limiting found on other amplifiers The IGM circuit is sonically transparent in normal use and unobtrusive when activated Thermal Protection The
12. en the speaker relays are closed Signal LED This LED lights when its channel produces an output signal of approxi mately 4 Volts RMS or more gt 0 Volt at the input with O dB attenua tion and x40 Voltage gain The state of this LED is useful in determin ing whether a signal is reaching the input and is being amplified This is especially true when the unit is operated far from the connected speak ers amplifier channel features 7 five front panel LED indica tors ACL Signal Temp DC and Active These LEDs inform the user of operat ing status and warn of pos sibly abnormal conditions Features Overview Temp LED The Temp LED lights when a channels output relay is open discon necting the speaker s because of an overheating condition Once the channel temperature has returned to a safe level the LED will turn off and the speaker s will be reconnected DC LED The DC LED lights when the channels output relay is open discon necting the speaker s when the amplifier senses a DC voltage or sub sonic signal at its output Active LED The Active LED indicates that a channels output relay is closed and operational It lights under normal operation and remains on even when the channel is in ACL gain reduction These protection features leave the output relay closed If the Active LED goes off there will be no signal at the output connector s Airflow Outlet Grille Pro 200 Series amplifiers are cooled by dua
13. hannel It is important to have an ade When mounting in a rack e ry to avoid using doors quate air supply at the back of the amplifier and enough space around the front of Beer in the amplifier to allow the cooling air to escape If the unit is rack mounted do not and rear of the enclosure use doors or covers on the front of the rack the exhaust air must flow without EE SE restriction If you are using racks with closed backs use fans on the rear rack panel Suggestion to pressurize the rack to ensure an ample air supply Also make sure there is one n racks with closed backs standard rack space opening for every three mounted power amplifiers allow at least one stan dard rack space opening for every four amps Additional Guidelines Make sure the mains voltage is correct and the same as that printed on the rear of the amplifier Damage caused by connecting the amplifier to improper AC voltage is not covered by any warranty See the Connecting Power section in Chapter 5 for more information on voltage Note Always turn off and disconnect the amplifier from mains voltage before making audio connections As an extra precaution have the attenuators turned down during power up Although Pro 200 Series amplifiers have AutoRamp circuitry which raises the signal level gradually after the output relay closes it is always a good idea to have the gain controls turned down during power up This will prevent speaker damage if there is a h
14. ies resistance that could degrade the amplifier s damping of the speaker s motion and may even deteriorate the system s sound quality If you elect to use fuses check with the speaker manufacturer to deter mine the proper current rating and time lag required Do not drive any low frequency speaker enclosure with frequencies lower than its own tuned frequency the reduced acoustical damping could cause a ported speaker to bot tom out even at moderate power Consult the speaker system specifications to deter mine its frequency limits The wire gauge charts in Appendix C will assist you in determining the optimum copper wire gauge for your speaker cables Remember that the speaker cable resistance robs amplifier power in two ways through power lost directly to resistance often referred to as DR loss and through increased total load resistance which decreases the amount of power available from the amplifier Appendix C gives cable length figures in feet AWG wire gauges and in metric values p 20 Safety Protection Features Pro 200 Series amplifiers incorporate several circuits to protect both themselves and loudspeakers Crest Audio has attempted to make the amplifiers as foolproof as possible by making them immune to short and open circuits mismatched loads DC voltage and overheating If a channel goes into ACL gain reduction mode the speaker load will remain connected but clipping percentage or output power will be instantly reduc
15. igh signal level at the inputs Whether you buy or make them use high quality connections input cables and speaker cables along with a good soldering technique Most intermittent problems are caused by faulty cables Consult the the Wire Gauge Charts in Appendix C to determine proper gauges for different load impedances and cable lengths Cable resistance robs amplifier power in two ways power lost directly to resistance I2R loss and by lowering the total load impedance Also make sure the mode switch is set correctly for the desired application See Chapter 4 for more information on modes Maintenance Pro 200 Series amplifiers require little routine maintenance When used in an extremely dusty or smoky environment it should be periodical ly blown free using compressed air of any foreign matter that may have built up inside When used in an environment where residue from smoke fog machines is regular ly present the amplifier s should be periodically checked by authorized Crest ser vice personnel for build up of that residue Users will not need to make any adjustments to the amplifier during its lifetime There are no user serviceable parts or adjustments that require opening the unit LaO p 5 gt Controls and Connectors gt Legend of Panel Symbols SE Features Overview Front Panel Rear Panel p 7 CO ah ACL O Bo ALIDIO Professional Power Amplifier 1 O me L CEET femp Q 2 RACE A m MIN
16. il 9 LE A i A rower 0000000 O J KI ThA dB 80 ca BaB J Front Panel Rack Mounting Ears Two front panel mounting holes are provided on each mounting ear Each Pro 200 Seri Ber Input Attenuator See the Features Overview Front Panel Pro 8200 shown Whenever possible set the attenuator fully clockwise to maintain opti mum system headroom The input attenuator controls one for each channel are located at the front panel adjust gain for their respective channels in all modes See the specifications at the end of this manual for standard voltage gain and input sensitivity information When operating in the bridged mode both attenuator must be in the same position so the speaker load will be equally shared between the channels See Chapter 4 on Bridged Mono mode operation for more infor mation and precautions ACL Automatic Clip Limiting LED A channel s ACL LED will light at the onset of clipping If the LEDs are flashing quickly and intermittently the channel is at its clip threshold A steady bright glow means the unit is clip limiting or reducing gain to pre vent severely clipped wave forms from reaching the speakers During ini tial power up the ACL LED will light to indicate that the Auto Ramp gain reduction circuitry is activated This will prevent sudden signal bursts wh
17. internal fans will keep the amplifier operating well within its intended temperature range under normal conditions If a channel s heat sink temperature reaches 75 C which may indicate an obstructed air supply that channel will independently protect itself by dis connecting its load and shutting down until it has cooled During this time the channel s Temp LED will light the Active LED will extinguish and the cooling fans will run at their highest speed Short Circuit If an output is shorted the IGM and thermal circuits will automatically protect the ampli fier The IGM circuit senses the short circuit as an extremely stressful load condition and attenuates the signal protecting the channels output transistors from over current stress If the short circuit remains the channel will eventually thermally protect itself by discon necting the load DC Voltage Protection If an amplifier channel detects DC voltage or subsonic frequencies at a channel output the respective output relay will immediately open to prevent loudspeaker damage The channels DC LED will light SACS p 21 Safety Turn On Turn Off Protection At power up the amplifier stays in the protect mode with outputs disconnected for about six seconds while the power supplies charge and stabilize While the output relays are open the ACL LEDs will light When the power is turned off the speaker loads immedi ately disconnect so that no thumps or pops are heard Auto
18. l variable speed rear mounted fans Cool air flows over the heat sink and exhausts through the front grille Make sure this outlet remains clear to allow unre stricted airflow AC Power Switch Circuit Breaker Pro 200 Series amplifiers have a combination AC switch circuit break er on the front panel If the switch shuts off during normal use push it back to the ON position once If it will not stay on the amplifier needs servicing SACS Features Overview Rear Panel Ce OUTPUT CLASS 2 WIRING MAY BE USED BA Rear Panel Legend Rear Panel Input Connection Input Connectors Input signals can be connected to the amp via the Neutrik Combicon connectors using either a TRS or XLR connector Input sensitivity is TT5v 0 dBv for full rated output power Output Connection Channel A stereo parallel SRE a cgs Bridged mono See Input Connections in Chapter 5 for more information s Channel B stereo parallel Gain Select Switch The rear panel Gain Select switch determines whether the amplifier has an overall gain of 40x 32 dB or 20x 26 dB Input Connector Polarity The OUT position will select x40 Table The IN position will select x20 Mode Select Switch lt pos Speakon Output Polarity Po Table The rear panel Mode Select Switch determines whether the amplifier is in stereo parallel or b
19. l be fatal to cone and compres sion drivers Crest Audio Pro 200 Series amplifiers automatically protect speakers from DC voltages and subsonic signals Be sure that the low and mid bands of an electronic crossover are connected to the cor rect amplifiers and drivers and not accidentally connected to those for a higher frequen cy band The amplifier s clipping point is its maximum peak output power and some of the higher powered Pro 200 Series amplifiers can deliver more power than many speak ers can safely handle Be sure the peak power capability of the amplifier is not excessive for your speaker system To ensure the speakers never receive excessive power and that the amplifier never clips use a properly adjusted external limiter or a compressor with a ratio of 10 1 or higher to control power output in systems with active electronic crossovers use one for each frequency band The clip limiter will automatically limit the duration of squared off con tinuous wave forms applied to the speakers The amplifier will however allow normal musical transient bursts to pass When the amplifier does clip it is at its maximum out put power Some speaker systems are packaged with processors that have power limit ing circuits and should not require additional external limiting Fuses may also be used to limit power to speaker drivers although as current limiting rather than voltage limiting devices Some poor quality fuses have a significant ser
20. l impedance for channel A will be 2 ohms not 4 IEC power connector Accepts a standard IEC terminated power cable See Connecting Power in Chapter 5 SACS Never connect a hot red output to ground or to another hot red output In situations where an UNBALANCED signal is EI fed to the amp its important to ground the unused input If the invert ing input of an amp channel is left floating the gain will drop by 3 dB In effect the amp will not be as loud For more information about this ask your dealer or contact Crest Audio Technical Support directly p 11 Operation Modes gt Choosing the appropriate mode Stereo gt Switching between operation modes gt Special considerations when using bridged mode Parallel Bridged RES er Operation Modes Mode Selection The rear panel Mode Select Switch determines whether the amplifier is in stereo parallel or bridged mono mode Do not operate the Mode Select Switch with the amplifier on See the next chapter on Connections for proper wiring in each mode Stereo For stereo dual channel operation turn the amplifier off and set the Mode Select Switch to the stereo position In this mode both channels operate independently of each other with their input attenuator con trolling their respective levels Thus a signal at Channel A s input pro duces an amplified signal at Channel Ak output while a signal at Channel Be input produces an amp
21. lertar al usario de la presencia de instruccones importantes sobre la operaci n y mantenimiento en la informaci n que viene con el producto PRECAUCION Riesgo de descarga el ctrica iNO ABRIR PRECAUCION Para disminu r el riesgo de descarga el ctrica no abra la cubierta No hay piezas tiles dentro Deje todo mantenimiento en manos del personal t cnico cualificado ADVERTENCIA Para evitar descargas el ctricas o peligro de incendio no deje expuesto a la lluvia o humedad este aparato Antes de usar este aparato lea m s advertencias en la gu a de operaci n Ce symbole est utilis dans ce manuel pour indiquer l utilisateur la pr sence d une tension dan gereuse pouvant tre d amplitude suffisante pour constituer un risque de choc lectrique Ce symbole est utilis dans ce manuel pour indiquer l utilisateur qu il ou qu elle trouvera d impor A tantes instructions concernant l utilisation et entretien de l appareil dans le paragraphe signal ATTENTION Risques de choc lectrique NE PAS OUVRIR ATTENTION Afin de r duire le risque de choc lectrique ne pas enlever le couvercle II ne se trouve l in t rieur aucune pi ce pouvant tre repar e par l utilisateur Confiez l entretien et la r paration de l appareil un r parateur agr AVERTISSEMENT Afin de pr venir les risques de d charge lectrique ou de feu n exposez pas cet appareil la pluie ou humidit A
22. lified signal at Channel B s output Parallel For parallel dual channel single input operation turn the amplifier off and set the Mode Select Switch in the parallel position both amplifier channels are then driven by the signal at Channel A s input No jumper wires are needed Output connections are the same as in the stereo mode In the parallel mode only Channel Ak input is active Channel B s input is not in the circuit Both input attenuator remain active allowing you to set different levels for each channel Power and other general performance specifications are the same as in the stereo mode Bridged Mono Both amplifier channels can be bridged together to make a very pow erful single channel monaural amplifier Use extreme caution when operating in the bridged mode as potentially lethal voltage may be pre sent at the output terminals To bridge the amplifier turn the power off and set the rear panel mode select switch to the bridge position Apply the signal to Channel AS input and connect the speakers across the hot outputs the binding posts of channels A and B or the Speakon con nector for Channel A Unlike the stereo and parallel modes in which one side of each output is grounded both sides are hot in bridged mono mode Channel AS side is the same polarity as the input For proper operation both input atten uator must be in the same position This keeps the load balanced SC SE A between the channel outputs
23. omer Service Distributor Dealer or any of the worldwide Crest Audio offices For those with Internet access please visit the Crest Audio web site Contact Crest Customer Service Phone 201 909 8700 USA Fax 201 909 8744 USA Email customerserve crestaudio com Technical Support Phone 201 909 8700 USA Fax 201 587 0550 USA Email techserve crestaudio com Web Site www crestaudio com Postal Mail Crest Audio Inc 16 00 Pollitt Drive Fair Lawn NJ 07410 USA Warranty Your Crest Audio Amplifier is covered against defects in material and workmanship Refer to the warranty card provided with this manual for more details p 24 Specifications Pro 200 Series Bridge Power 40 Stereo Power per channel both channels driven 20 40 80 Bridge Power 20 40 80 Minimum Load Impedance Maximum output RMS Voltage Swing Freguency Response 1W 80 Power Bandwidth rated 4Q power Damping Factor 89 Input cmrr Input sensitivity 4Q rated output power 40x Input sensitivity 4Q rated output power 20x Input impedance Hum and noise A weighted rated power 80 Crosstalk 1kHz at rated power BO Slew rate Class T H D 2x20 20 Hz 20kHz T H D 2x40 20 Hz 20kHz T H D 2x80 20 Hz 20kHz Current draw 1 8 power 120Vac Current draw 1 3 power 120Vac Cooling Connectors Controls LED indicators Protection Construction Imperial Dimensions Metric Dimensions Net Weight Gross Weight
24. or other test equipment while the amplifier is in As in the parallel mode only Channel Ak input is active If an output bridgag moi E a patch panel is used all connections must be isolated from each other sa SS Ee and from the panel For all models the recommended minimum nomi nal load impedance in the bridged mode is 4 Ohms equivalent to dri ving both channels at 2 Ohms Driving bridged loads of less than 4 Ohms will activate the ACL circuitry resulting in a loss of power and may also cause a thermal overload p 14 Connections gt Connecting the amplifier to AC power Power gt Proper signal paths Stereo Parallel amp Bridged Mono gt Proper wiring schemes for output connectors Input Output SE p 15 Connections Power Unless otherwise specified when ordered Pro 200 Series amplifiers are shipped from the factory set to one of following voltage options Option US domestic Nominal 120Vac 60Hz for rated power output safe operating range 100 132Vac Option 2 Export Nominal 230Vac 50Hz for rated power output safe operating range 200 264Vac Note Due to the nature of the switching power supplies in the Pro 200 Series 50 60Hz operation is acceptable for either option above Inputs Pro 200 series amplifiers are configured standard with pin 2 hot on XLR inputs and Tip hot on TRS inputs Female XLR TRS pinouts 1 Ground 5 TP Positive ki o IT Ring Negative 3 Negative
25. ridged mono mode Do not operate the Mode Select Switch with the amplifier on See Chapter 4 for more information on operation modes Do not adjust the mode A selection switch while the amplifier is turned on p 10 Features Overview Rear Panel cont Cooling Fans The cooling fans operate continuously while the amplifier is on An internal temperature sensor increases the speed of the fans during high temperature conditions Air enters through the rear and exits through the front grille Be sure to allow adequate air flow from the rear of the rack in which the amp is mounted Binding Post Output Connectors Speakers can be connected via the high current binding posts One pair of posts is provided Red hot Black ground for each channel See Output Connections in chapter 7 for information on Bridged Mono operation using Binding Posts Speakon Output Connectors Speakers can also be connected via industry standard Speakon NL 4 connectors One connector is provided for each channel In Bridged Mono mode the Speakon connector for Channel A is used exclusively Note Both Binding Post and Speakon output connectors may be used at the same time Both sets are are parallel to each other so if you use them together be sure calculate the total impedance for each channel For example If you connect a 4 ohm load to the binding posts on channel A and another 4 ohm load via the Speakon connector on channel A the tota
26. s Connections Power Input Output Safety User Responsibility Speaker Protection Protection Circuitry Service Support amp Warranty Support Contact Crest Warranty Specifications Block Diagram Appendices Wire Gauge Chart p 1 How to use this manual Introduction Congratulations on your purchase of a Crest Audio Pro 200 Series power amplifier Designed for years of reliable operation under rigorous use these power amplifiers offer the sonic superiority and unsurpassed reliability for which Crest Audio is famous Advanced technology and extensive protection circuitry allow more efficient operation especially when working with difficult loads and power conditions The Automatic Clip Limiting ACL circuit protects drivers maintains sonic integrity and ensures trouble free operation into loads as low as 2 Ohms Crest Audio s high efficiency design uses tunnel cooled heat sinks and variable speed DC fans to maintain a lower overall operating temperature resulting in longer output transistor life Pro 200 Series models 8200 7200 and 5200 use Crest Audio s innovative Power Density cir cuitry and packaging Although these amplifiers are simple to operate and housed in ultra strong steel chassis improper use can be dangerous These are very high powered amplifiers that can put out high voltages and sizable currents at frequencies up to 30 kHz Always use safe operating techniques with these amplifiers FOR YOUR SAFETY RE
27. vant d utiliser cet appareil lisez attentivement les avertissements sup pl mentaires de ce manuel Dieses Symbol soll den Anwender vor unisolierten gef hrlichen Spannungen innerhalb des Geh uses warnen die von Ausreichender St rke sind um einen elektrischen Schlag verursachen zu k nnen machen die Handhabung und Wartung des Produkts betreffen Dieses Symbol soll den Benutzer auf wichtige Instruktionen in der Bedienungsanleitung aufmerksam VORSICHT Risiko Elektrischer Schlag Nicht ffnen VORSICHT Um das Risiko eines elektrischen Schlages zu vermeiden nicht die Abdeckung enfernen Es befinden sich keine Teile darin die vom Anwender repariert werden k nnten Reparaturen nur von quali fiziertem Fachpersonal durchf hren lassen ACHTUNG Um einen elektrischen Schlag oder Feuergefahr zu vermeiden sollte dieses Ger t nicht dem Regen oder Feuchtigkeit ausgesetzt werden Vor Inbetriebnahme unbedingt die Bedienungsanleitung lesen Important Safety Instructions WARNING When using electrical products basic cau tions should always be followed including the following Read all instructions 2 Keep all instructions 3 Heed all warnings 4 Follow all instructions 5 Do not use this device near water 6 Clean only with a dry cloth 7 Do not block any of the ventilation openings Install in accordance with manufacturer s instructions 8 Do not install near any heat sources such as radia
28. will mount in standard 19 racks Rear mounting ears are also provided for additional support which is recommended in non permanent instal lations like mobile or touring sound systems Because of the cables and connectors on the rear panel a right angle or offset screwdriver or hex key will make it easier to fasten the rear mounting ears to the rails Front Panel 8200 shown 7200 amp 5200 have the same dimensions O ka O Signal Front us Height O Active 3 47 N E 89 mm ail ARR CERN A 00000000 L Cd GD ChA O lt Front Width 19 483mm gt Rear Panel Lef Rear Width 17 432mm gt Dr om CLASS 2WIRING marne SED Front Height N Ces A 3 47 NES 88mm KE Side Panel lt Depth13 75 349 mm including rear support ears gt C3 G i gt Installation Cooling Reguirements Pro 200 Series amplifiers use a forced air cooling system to maintain a low even e ake certain that there A operating temperature Air is drawn into the amplifier by fans on the rear panel is enough space around which passes over the cooling fins of the heat sinks and exhausts through the front meronr andrean orme grille If either heat sink gets too hot its sensing circuit will open the output relay E air to escape disconnecting the load from that particular c
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