Crest_Audio_PL_Series_Owners_Manual电路图.pdf

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1、OWNERS MANUAL PROFESSIONAL POWER AMPLIFIERS PL ACTIVE PROTECT SIGNAL CLIP -6 -10 -15 -30 -80 -3 -1 0dB CH BACTIVE PROTECT SIGNAL CLIP CH A 8001 PROFESSIONAL POWER AMPLIFIER PL -6 -10 -15 -30 -80 -3 -1 0dB ACTIVE PROTECT SIGNAL CLIP -6 -10 -15 -30 -80 -3 -1 0dB CH BACTIVE PROTECT SIGNAL CLIP CH A 900

2、1 PROFESSIONAL POWER AMPLIFIER PL -6 -10 -15 -30 -80 -3 -1 0dB -6 -10 -15 -30 -80 -3 -1 0dB CH A PROTECT SIGNAL CLIP ACTIVECH B PROTECT SIGNAL CLIP ACTIVE 7001 PROFESSIONAL POWER AMPLIFIER PL -6 -10 -15 -30 -80 -3 -1 0dB -6 -10 -15 -30 -80 -3 -1 0dB CH A PROTECT SIGNAL CLIP ACTIVECH B PROTECT SIGNAL

3、 CLIP ACTIVE 6001 PROFESSIONAL POWER AMPLIFIER PL -6 -10 -15 -30 -80 -3 -1 0dB -6 -10 -15 -30 -80 -3 -1 0dB CH A PROTECT SIGNAL CLIP ACTIVECH B PROTECT SIGNAL CLIP ACTIVE 4601 PROFESSIONAL POWER AMPLIFIER PL -6 -10 -15 -30 -80 -3 -1 0dB -6 -10 -15 -30 -80 -3 -1 0dB CH A PROTECT SIGNAL CLIP ACTIVECH

4、B PROTECT SIGNAL CLIP ACTIVE 3301 PROFESSIONAL POWER AMPLIFIER PL -6 -10 -15 -30 -80 -3 -1 0dB RadioFans.CN 收音机爱 好者资料库 1. Save the carton and packing material even if the equipment has arrived in good condition. Should you ever need to ship the unit, use only the original factory packing. 2. Read al

5、l documentation before oper- ating your equipment. Retain all doc- umentation for future reference. 3. Follow all instructions printed on unit chassis for proper operation. 4. Do not spill water or other liquids into or on the unit, or operate the unit while standing in liquid. 5. Make sure power ou

6、tlets conform to the power requirements listed on the back of the unit. 6. Do not use the unit if the electrical power cord is frayed or broken. The power supply cords should be routed so that they are not likely to be walked on or pinched by items placed upon or against them, paying particular atte

7、n- tion to cords and plugs, convenience receptacles, and the point where they exit from the appliance. 7. Always operate the unit with the AC ground wire connected to the electri- cal system ground. Precautions should be taken so that the means of ground- ing of a piece of equipment is not defeated.

8、 8. Mains voltage must be correct and the same as that printed on the rear of the unit. Damage caused by connec- tion to improper AC voltage is not cov- ered by any warranty. 9. Have gain controls on amplifiers turned down during power-up to pre- vent speaker damage if there are high signal levels a

9、t the inputs. 10. Power down B. Objects have fallen, or liquid has been spilled into the equipment; C. The equipment has been exposed to rain; D. The equipment does not appear to operate normally, or exhibits a marked change in performance; E. The equipment has been dropped, or the enclosure damaged

10、. 22. To obtain service, contact your nearest Crest Audio Service Center, Distributor, Dealer, or Crest Audio at 201.909.8700 (USA). Important Precautions This symbol is used to alert the oper- ator to follow important operating procedures and precautions detailed in documentation. This symbol is us

11、ed to warn opera- tors that uninsulated “dangerous volt- ages” are present within the equip- ment enclosure that may pose a risk of electric shock. RadioFans.CN 收音机爱 好者资料库 Crest Audio PL Series Power AmplifiersPage 3 Models PL3301, PL4601, PL6001, PL7001, PL8001, PL9001 Introduction Unpacking Instal

12、lation and Mounting Front Panel Rear Panel Internal Configuration and Control Operation Connecting Power / Circuit Size Requirements Cooling Requirements Connecting Inputs Connecting Outputs Mode Selection Stereo /Parallel/Bridged Mono Connections TourClassProtection Features User Precautions Speake

13、r Protection Recommended Speaker Cabling Maintenance User Responsibility Service and Repair 5 5 5 6 7 8 9 9 9 10 10 11 12 13 14 14 14 15 15 16 Power Amplifier Owners Manual Table of Contents PL Appendix ASpecifications Appendix BPL Block Diagram Appendix CWire Gauge Charts Appendix DRear Panel Symbo

14、ls - Legend Appendix EPL9001 Power Amplifier - Special Functions RadioFans.CN 收音机爱 好者资料库 Page 4Crest Audio PL Series Power Amplifiers Models PL3301, PL4601, PL6001, PL7001, PL8001, PL9001 PL ACTIVE PROTECT SIGNAL CLIP -6 -10 -15 -30 -80 -3 -1 0dB CH BACTIVE PROTECT SIGNAL CLIP CH A 9001 PROFESSIONAL

15、 POWER AMPLIFIER PL -6 -10 -15 -30 -80 -3 -1 0dB Front height 5.25 133mm Front width 19 / 483mm PL8001, PL9001 Front Dimensions Rear/Side Dimensions -6 -10 -15 -30 -80 -3 -1 0dB CH A PROTECT SIGNAL CLIP ACTIVECH B PROTECT SIGNAL CLIP ACTIVE 7001 PROFESSIONAL POWER AMPLIFIER PL -6 -10 -15 -30 -80 -3

16、-1 0dB Front height 3.5 89mm PL3301-PL7001 Front Dimensions Front width 19 / 483mm Note: see Appendix E for detailed PL9001 rear panel drawings. A A B AB A 1 3- 2+ + 5.25 133mm CA12 CA18 3.5 89mm CA2 CA4 CA6 CA9 17.9/437mm (19/483mm to rack ears) 1.375 35mm 18/457mm A A B AB A 1 3- 2+ + A A B B + +

17、+ A B B A A B A B B A + + + A A B B A B PL3301 PL4601 PL6001 PL7001 PL8001 PL9001 Introduction Congratulations on your purchase of a new PL Series professional power amplifier, and thank you for your confidence in Crest Audio products. You are among the growing number of audio professionals who have

18、 made Crest Audio one of the worlds leading suppliers of professional and commercial/industrial audio sys- tems. For your safety, please read the Important Precautions section before installing and operating the amplifier. The Crest Audio PL Series is based on the same advanced circuit topologies th

19、at have made Crest ampli- fiers the choice of touring professionals worldwide. PL Series amplifiers are designed for high operating efficiency and accurate sonic performance across the full audio bandwidth, even under stressful conditions. In order to maintain strict quality assurance standards, all

20、 PL Series amplifiers are built in Crests state-of- the-art USA manufacturing facility. Internal components are the finest available, and key sub-assemblies are pre-tested before final assembly. Finally, each amplifier is “burned in” and thoroughly tested (using preci- sion audio test equipment) bef

21、ore shipping. In addition, all PL Series amplifiers incorporate Crests exclu- sive TourClass protection features to safeguard both internal circuitry and connected loudspeakers. This proven combination of advanced design, quality construction, and comprehensive circuit protection is your guarantee o

22、f fail-safe reliability. You can depend on consistent, stable performance even when your PL Series amplifier is subjected to punishing extremes in the most demanding fixed or mobile sound reinforce- ment applications. Unpacking Please inspect the amplifier carefully immediately after unpacking. If y

23、ou find any damage, notify your sup- plier/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 carriers inspection. If your packing materials are in good condition, please save

24、 them. If you ever need to ship the unit back to Crest Audio or an authorized service center, you should use only the original factory packing. Installation and Mounting Four PL Series amplifiers are 2-rack-space units: models PL3301, PL4601, PL6001, and PL7001. Models PL8001 and PL9001 are 3-rack-s

25、paces high. All mount in standard 19-inch racks. Four front-panel mount- ing holes are provided on each amplifier. Rear mounting ears give additional support, and use of rear sup- ports is highly recommended in all mobile and touring sound systems. Crest Audio PL Series Power AmplifiersPage 5 Models

26、 PL3301, PL4601, PL6001, PL7001, PL8001, PL9001 PL Front Panel 1. Rack Mounting Ears. Two front panel mounting holes are provided on each mounting ear. 2. Rack Handles. Rack handles are removable by removing screws on back of rack ears. 3. Fan Outlet Grills. PL Series amplifiers are cooled by two, r

27、ear-mounted fans. Cool air flows over the heat sinks and exhausts through the front grills. Make sure these outlets remain clear to allow unrestricted air flow. 4. AC Power Switch/Circuit Breaker. PL Series amplifiers have a front-panel combination AC switch and circuit breaker. (No fuses are used.)

28、 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. 5. Clip LED. Illuminates at the clipping threshold. Continuous illumination also indicates that ACL (Active Clip Limiting) protection circuitry is engaged. 6. Si

29、gnal LED. Illuminates to indicate that a signal (above a minimum threshold) is present at the amplifier input, and that the signal is being amplified. 7. Protect LED. Indicates that the channel is in Protect mode (speakers disconnected by output relay). 8. Active LED. Indicates that AC power is conn

30、ected and the amplifier is turned on. 9. Input Attenuators. Two input attenuators adjust level for their respective amplifier channels. In Bridged Mono Mode, both attenuators are used to control signal level and must be adjusted to the same setting. Page 6Crest Audio PL Series Power Amplifiers Model

31、s PL3301, PL4601, PL6001, PL7001, PL8001, PL9001 -6 -10 -15 -30 -80 -3 -1 0dB CH A PROTECT SIGNAL CLIP ACTIVECH B PROTECT SIGNAL CLIP ACTIVE 7001 PROFESSIONAL POWER AMPLIFIER PL -6 -10 -15 -30 -80 -3 -1 0dB 78912354 PL 6 Never try to hold the circuit breaker/power switch in the “ON” position if it w

32、ont stay there itself! Rear Panel See Appendix E for information specific to model PL9001. 10. Five-Way Binding Post Output Connectors PL Series amplifiers are supplied with 5-way Binding Posts. Connection to the binding posts can be made with bare wire, banana plugs, or spade lug terminations. Make

33、 connections to both the Channel A and Channel B terminals for Stereo or Parallel Mode, or a single connection across the red (“hot”) terminals only of Channels A and B for Bridged Mono Mode. See Appendix D and the section on Mode Selection for more information. NOTE: on the PL9001, two pairs of 5-w

34、ay binding posts are provided for each channel, so that paralleling of speakers is possible. 11. Mode Selection Switch. This recessed, three-position switch configures the amplifier for Stereo, Parallel or Bridged Mono Mode operation. Amplifiers are factory-configured for Stereo Mode. See Appendix D

35、 and the section on Mode Selection for more information. 12. Signal Ground Lift Switch. The recessed signal ground lift switch (factory-set to the ground bottom position) electrically connects signal ground to the chassis/AC ground. The top position lifts the amplifiers signal ground. In a properly

36、designed system (for safety purposes and to minimize noise), amplifiers should be connected to ground through the AC line cord. Also, whenever possible, the signal source equipment should share the same AC ground as the amplifier. In some cases this may not be possible, and a ground loop results. If

37、 this happens, the first step is to move the ground lift switch to the top (lift) position. In this position, the signal ground is lifted and completely isolated from the chassis/AC ground. Do not change the switch to the lift position if the amplifier and the signal source equipment are on the same

38、 AC ground. Should the ground loop problem persist after the ground lift switch has been set to the lift position, then the shield on balanced input lines should be grounded at one end only (usually the signal source). Crest Audio PL Series Power AmplifiersPage 7 Models PL3301, PL4601, PL6001, PL700

39、1, PL8001, PL9001 PL RISK OF ELECTRIC SHOCK DO NOT OPEN AVIS : RISQUE DE CHOC LECTRIQUENE PAS OUVRIR WARNING TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE. ATTENTION! POUR VITER LE RISQUE DINCENDIE OU DE CHOC LECTRIQUE, NE PLACEZ PAS CET APPAREIL SOUS

40、LA PLUIE OU LHUMIDIT CAUTION A A B AB A Designed the unused connectors may be used for “loop through” con- nection to other amplifiers. NOTE: Unbalanced “Tip/Sleeve” plugs may be used with the balanced TRS “Tip/Ring/Sleeve” connectors. The “ring” terminal or negative input will be connected to groun

41、d internally. When using three-pole (stereo) TRS connec- tors, make sure that the ring connection is made either to the cold () output of the source equipment, or to ground. Incorrect connections may cause a 6dB loss in level. 15. Fan Inlet Ports this indicates that the temperature sensing circuits

42、are operating normally. The fan speed increases only as required by heat sink temperatures, keeping fan noise to a minimum. Under extreme thermal load, the fans will force a very large volume of air through the heat sinks. If either heat sink surpasses the maximum allowed temperature, the sensing ci

43、rcuit will open the output relay, disconnecting the load from that channel. If the power transformer overheats, another sensing circuit opens both channel output relays until the transformer cools to a safe temperature. IMPORTANT: To ensure optimum cooling, periodically clean the amplifier fan filte

44、rs (removable without tools). Also make certain that there is enough space around the front of the amplifier to allow the cooling air to escape. If the amplifier is rack-mounted, do not use doors or covers on the front of the rack; the exhaust air must flow out without resistance. If the amplifiers

45、are to be housed in racks with closed backs, allow at least one (1) standard rack space of opening in the front of the rack for every four amplifiers. Crest Audio PL Series Power AmplifiersPage 9 Models PL3301, PL4601, PL6001, PL7001, PL8001, PL9001 PL Connecting Inputs. Use either the XLR or 1/4-in

46、ch input connectors on the rear to supply audio signals to your Crest Audio PL Series amplifier. Both connectors accept balanced and unbalanced audio connections. (The PL Series ampli- fiers are configured standard with “Pin 2 hot” on XLR inputs. Please note that some other Crest Audio amplifiers ar

47、e configured with “Pin 3 hot”). The unused connector can be used to jumper the audio input to another amplifier input. For more information, see the sections on Balanced 1/4 (TRS) in addition, both must be adjusted to the same setting. Either the 1/4 (TRS) or XLR input may be used. NOTE: The channel

48、 B input connectors (XLR and/or TRS) may be used to “loop thru” the channel A signal when in parallel or bridged mono mode. Use extreme caution when operating the amplifier in Bridged Mono Mode. Never ground either side of the speaker cable when the amplifier is in Bridged Mono Mode; both sides are

49、“hot.” If an output patch panel is used, all connections must be isolated from each other and from the panel. The recommended minimum nominal load impedance in the Bridged Mono Mode is 4 ohms, which is the equivalent to driving both channels separately at 2 ohms. Driving bridged loads of less than the recommended minimums will activate the IGM circuitry, resulting in a loss of power, and may also lead to a thermal protect condition. See figures on page 12 showing output connection information. Crest Audio PL Series Power AmplifiersPage 11 Models PL3301, PL4601, PL6001, P