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PL
PROFESSIONAL POWER AMPLIFIERS
CLIP CLIP
9001
SIGNAL SIGNAL
PROTECT PROTECT
PL
ACTIVE CH A CH B ACTIVE PROFESSIONAL POWER AMPLIFIER
-6 -6
-10 -10 -3
-3
-15 -15
-1 -1
-30 -30
-80 0dB
-80 0dB
CLIP CLIP
8001
SIGNAL SIGNAL
PROTECT PROTECT
PL
ACTIVE CH A CH B ACTIVE PROFESSIONAL POWER AMPLIFIER
-6
-6
-10
-10 -3 -3
-15 -15
-1 -1
-30
-30
-80 0dB -80 0dB
CLIP CLIP
SIGNAL 7001
SIGNAL
PROTECT PROTECT
ACTIVE CH A CH B ACTIVE PL
-6 -6
-10 -10
-3 -3 PROFESSIONAL POWER AMPLIFIER
-15 -15
-1 -1
-30 -30
-80 0d
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Important Precautions This symbol is used to alert the oper- 10. Power down & disconnect units from 20. Non-use periods. The power cord of ator to follow important operating mains voltage before making connec- equipment should be unplugged from procedures and precautions detailed tions. the outlet when left unused for a long in documentation. period of time. 11. Never hold a power switch in the This symbol is used to warn opera- “ON” position if it won’t stay there 21. Service Information Equipm
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Power Amplifier Owner’s Manual PL Table of Contents Introduction 5 Unpacking 5 Installation and Mounting 5 Front Panel 6 Rear Panel 7 Internal Configuration and Control 8 Operation 9 Connecting Power / Circuit Size Requirements 9 Cooling Requirements 9 Connecting Inputs 10 Connecting Outputs 10 Mode Selection 11 Stereo /Parallel/Bridged Mono Connections 12 ® TourClass Protection Features 13 User Precautions 14 Speaker Protection 14 Recommended Speaker Cabling 14 Maintenance 15 User Responsibilit
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+ PL PL8001, PL9001 Front Dimensions CLIP CLIP 9001 SIGNAL SIGNAL Front PROTECT PROTECT PL height ACTIVE CH A CH B ACTIVE PROFESSIONAL POWER AMPLIFIER 5.25" 133mm -6 -6 -10 -10 -3 -3 -15 -15 -1 -1 -30 -30 -80 0dB -80 0dB Front width 19" / 483mm PL3301-PL7001 Front Dimensions CLIP CLIP SIGNAL SIGNAL 7001 Front PROTECT PROTECT height ACTIVE CH A CH B ACTIVE PL -6 -6 3.5" -10 -3 -10 -3 PROFESSIONAL POWER AMPLIFIER 89mm -15 -15 -1 -1 -30 -30 -80 0dB -80 0dB Front width 19" / 483mm Rear/Side Dimensio
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PL 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 made Crest Audio one of the world’s 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
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PL Front Panel 2 3 4 5 6 7 8 9 1 CLIP CLIP SIGNAL SIGNAL 7001 PROTECT PROTECT ACTIVE CH A CH B ACTIVE PL -6 -6 -10 -10 -3 -3 PROFESSIONAL POWER AMPLIFIER -15 -15 -1 -1 -30 -30 -80 0dB -80 0dB 1. Rack Mounting Ears. Never try to hold the circuit breaker/power Two front panel mounting holes are provided on each mounting ear. switch in the “ON” 2. Rack Handles. position if it won’t stay Rack handles are removable by removing screws on back of rack ears. there itself! 3. Fan Outlet Grills. PL Series
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+ PL Rear Panel See Appendix E for information specific to model PL9001. A A CAUTION Designed & manufactured in the USA by: RISK OF ELECTRIC SHOCK A DO NOT OPEN AVIS : RISQUE DE CHOC ÉLECTRIQUE—NE PAS OUVRIR WARNING TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE. + • ATTENTION! POUR ÉVITER LE RISQUE D'INCENDIE OU DE CHOC • ÉLECTRIQUE, NE PLACEZ PAS CET APPAREIL SOUS LA PLUIE OU Á AB Crest Audio Inc. L'HUMIDITÉ 100 Eisenhower Dr. A Paramus, New Jers
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PL 13-14. Balanced 1/4" (TRS) & XLR Input Connectors. Tip - Positive (+) Ring - Negative (-) These connectors accept input signals on balanced TRS and XLR input plugs. Sleeve - Ground ( ) See the figure at the left for information on polarity. Connectors for each chan- nel are in parallel; 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 o
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PL Operation Connecting Power / Circuit Size Requirements. PL Series amplifier power requirements are rated at: a) “idle” b) 1/8th power (“typical” music conditions) c) 1/3rd power (“continuous” music conditions) d.) maximum rated power (circuit breaker limited). The maximum power current draw rating is limited only by the front panel circuit breaker. Consult the spec- ifications in the Appendices section for figures on the current that each amplifier will demand. Make sure the mains voltage is
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PL Connecting Inputs. Use either the XLR or 1/4-inch 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 are 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 s
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PL Mode Selection. The three-position, recessed Mode Select switch (located on the rear panel) configures the amplifier for either Stereo, Parallel or Bridged Mono Mode. Amplifiers are factory-configured for Stereo Mode. Stereo Mode. In Stereo Mode, both channels operate independently, with their input attenuators controlling their respec- tive levels. Signal at Channel A’s input produces output at Channel A’s output, while signal at Channel B’s input produces output at Channel B’s output. Recom
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PL Stereo Mode Connections A or NOTE: the Binding Post version of the PL9001 features two pair A A + of 5-Way Output Binding Posts. A A A + • • AB A + A B A B A B •• + B A B B 1 2+ 3- + B B B or Parallel Mode Connections A or A A + A A A + • • AB A + A B A B A B •• + B A B B 1 2+ 3- + A Bridged Mono Mode Connections Bridged/Mono or A A + 643-106 A A A A + • • AB A + A B A B A B •• + B A B B 1 2+ 3- Page 12 Crest Audio PL Series Power Amplifiers Models PL3301, PL4601, PL6001, PL7001, PL8001, P
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PL ® TourClass Protection Every model in the PL Series incorporates TourClass protection features. Derived from Crest Audio’s exten- sive 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. ACL (Active Clip Limiting). At the amplifier’s full power limit, or clipping point, ACL will be activated. This is indicated by illumina- tion of the Clip LED. The
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PL User Precautions 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, and DC voltage. All PL Series amplifiers automatically protect speakers from DC voltages and subsonic signals. For more infor- mation, see the TourClass Protection
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PL Maintenance A PL Series amplifier requires no routine maintenance other than occasional cleaning or replacement of the fan intake filters on the rear of the amplifier. (This operation does not require any tools). Filters must be kept clear and clean to ensure proper ventilation through the unit. If the amplifier is used in an extremely dusty or smoky environment, the filter should be cleaned or changed frequently and the unit should be peri- odically “blown free” (using compressed air) of any
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PL Appendices
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Appendix A - Amplifier Specifications PL PL3301 PL4601 PL6001 PL7001 PL8001 PL9001 1kHz, 0.01% THD+N 8Ω Stereo Power 160W 250W 400W 600W 700W 1000W (.03% THD+N) 4Ω Stereo Power 250W 435W 600W 900W 1200W 1800W (.03% THD+N) 2Ω Stereo Power N/A 500W 750W 1000W 1400W 2500W (.03% THD+N) 8Ω Bridged Mono Power 500W 830W 1200W 1800W 2400W 3600W (.03% THD+N) 4Ω Bridged Mono Power N/A 1000W 1500W 2000W 2800W 5000W (.03% THD+N) 20Hz-20kHz, 0.1% THD+N 8Ω Stereo Power 150W 245W 350W 550W 650W 950W 4Ω Stereo
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Appendix B - PL Block Diagram PL R T CHANNEL A PREAMP + NON-INVERTED 2 ATTENUATOR OUTPUT STAGE 2 / 3 † 3 - INVERTED 1 PIN 2 / 3 + A A JUMPER + - (REAR PANEL SWITCH ON PL9001) (REAR PANEL SWITCH OUTPUT RELAY AMP FRONT END ON CA18) † PREAMP INCORPORATES INPUT BRIDGED SENSITIVITY/VOLTAGE GAIN JUMPER - (REAR P (REAR PANEL SWITCH ON PL9001) ANEL SWITCH ON CA18) PARALLEL + - ATTENUATOR OUTPUT STAGE STEREO † R - SWITCH PREAMP T CHANNEL B AMP FRONT END OUTPUT RELAY B NON-INVERTED + 2 2 / 3 3 B INVERTED
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Appendix C - Wire Gauge Chart PL Stranded Cable Lgth. Wire Gauge (AWG) Power Loss Power Loss Power Loss (ft.) (8 ohm load) (4 ohm load) (2 ohm load) 5 18 0.81% 1.61% 3.2% 16 0.51 1.02 2.0 14 0.32 0.64 1.28 12 0.20 0.40 0.80 10 0.128 0.25 0.51 10 18 1.61% 3.2% 6.2% 16 1.02 2.0 4.0 14 0.64 1.28 2.5 12 0.40 0.80 1.60 10 0.25 0.51 1.01 40 18 6.2% 11.9% 22% 16 4.0 7.7 14.6 14 2.5 5.0 9.6 12 1.60 3.2 6.2 10 1.01 2.0 4.0 8 0.60 1.20 2.4 18 11.9% 22% 37% 80 16 7.7 14.6 26 14 5.0 9.6 17.8 12 3.2 6.2 11.8
