Table of Contents
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PROFESSIONAL POWER AMPLIFIERS
PL
OWNER' S MANUAL
PL
9001
CLIP
CLIP
SIGNAL
SIGNAL
PROTECT
PROTECT
ACTIVE
CH A
CH B
ACTIVE
PROFESSIONAL POWER AMPLIFIER
-6
-6
-10
-3
-10
-3
-15
-15
-1
-1
-30
-30
-80
0dB
-80
0dB
PL
8001
CLIP
CLIP
SIGNAL
SIGNAL
PROTECT
PROTECT
ACTIVE
CH A
CH B
ACTIVE
PROFESSIONAL POWER AMPLIFIER
-6
-6
-10
-3
-10
-3
-15
-15
-1
-1
-30
-30
-80
0dB
-80
0dB
CLIP
CLIP
PL
7001
SIGNAL
SIGNAL
PROTECT
PROTECT
ACTIVE
CH A
CH B
ACTIVE
-6
-6
-10
-3
-10
-3
PROFESSIONAL POWER AMPLIFIER
-15
-15
-1
-1
-30
-30
-80
0dB
-80
0dB
CLIP
CLIP
PL
6001
SIGNAL
SIGNAL
PROTECT
PROTECT
ACTIVE
CH A
CH B
ACTIVE
-6
-6
-10
-3
-10
-3
PROFESSIONAL POWER AMPLIFIER
-15
-15
-1
-1
-30
-30
-80
0dB
-80
0dB
CLIP
CLIP
PL
4601
SIGNAL
SIGNAL
PROTECT
PROTECT
ACTIVE
CH A
CH B
ACTIVE
-6
-6
-10
-10
-3
-3
PROFESSIONAL POWER AMPLIFIER
-15
-15
-1
-1
-30
-30
-80
0dB
-80
0dB
CLIP
CLIP
PL
3301
SIGNAL
SIGNAL
PROTECT
PROTECT
ACTIVE
CH A
CH B
ACTIVE
-6
-6
-10
-3
-10
-3
PROFESSIONAL POWER AMPLIFIER
-15
-15
-1
-1
-30
-30
-80
0dB
-80
0dB
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Table of Contents
Related Manuals for Crest Audio PL Series
Summary of Contents for Crest Audio PL Series
- Page 1 PROFESSIONAL POWER AMPLIFIERS CLIP CLIP SIGNAL SIGNAL PROTECT PROTECT ACTIVE CH A CH B ACTIVE CLIP CLIP SIGNAL SIGNAL PROTECT PROTECT ACTIVE CH A CH B ACTIVE CLIP CLIP SIGNAL SIGNAL PROTECT PROTECT ACTIVE CH A CH B ACTIVE CLIP CLIP SIGNAL SIGNAL...
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Page 2: Important Precautions
Important Precautions This symbol is used to alert the oper- ator to follow important operating procedures and precautions detailed in documentation. This symbol is used to warn opera- tors that uninsulated “dangerous volt- ages” are present within the equip- ment enclosure that may pose a risk of electric shock. -
Page 3: Table Of Contents
Crest Audio PL Series Power Amplifiers Models PL3301, PL4601, PL6001, PL7001, PL8001, PL9001 Power Amplifier Owner’s Manual Internal Configuration and Control Connecting Power / Circuit Size Requirements Stereo /Parallel/Bridged Mono Connections TourClass Recommended Speaker Cabling Appendix A Appendix B Appendix C... - Page 4 Models PL3301, PL4601, PL6001, PL7001, PL8001, PL9001 9001 CLIP SIGNAL PROTECT PROFESSIONAL POWER AMPLIFIER ACTIVE CLIP 7001 SIGNAL PROTECT ACTIVE PROFESSIONAL POWER AMPLIFIER PL3301 PL4601 PL6001 PL7001 1.375" 35mm PL8001 PL9001 CA12 CA18 Crest Audio PL Series Power Amplifiers 18"/457mm...
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Page 5: Introduction
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 that 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. -
Page 6: Front Panel
Rack handles are removable by removing screws on back of rack ears. 3. Fan Outlet Grills. PL 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 air flow. -
Page 7: Rear Panel
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 connections to both the Channel A and Channel B terminals for Stereo or Parallel Mode, or a single connection across the red (“hot”) terminals... -
Page 8: Internal Configuration And Control
On the PL9001, an external XLR polarity switch is featured. (See Appendix E). Input Sensitivity The PL Series amplifiers have a standard input sensitivity of .775 Volts for rated power at 8 Ohms. Models PL3301, PL4601, PL6001, PL7001 and PL8001 are fitted with an internal jumper which allows optional gains of X20 or X40. -
Page 9: Operation
Also, as an extra precaution, have the attenuators turned down during power-up. Cooling System and Requirements. PL Series amplifiers use a twin-tunnel forced-air cooling system to maintain a low, even operating tempera- ture. Drawn in by dual 45 cubic feet-per-minute (CFM) fans on the rear panel, air flows through the cooling fins of the channel heat sinks (dissipating power transistor heat), then exhausts through the front panel slots. -
Page 10: 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”). -
Page 11: Mode Selection
See figures on page 12 showing output connection information. Connecting amplifier outputs to oscilloscopes or other test equipment while the amplifier is in bridged mode may damage both the amplifier and test equipment! Crest Audio PL Series Power Amplifiers Models PL3301, PL4601, PL6001, PL7001, PL8001, PL9001 Page 11... - Page 12 5-Way Output Binding Posts. Parallel Mode Connections Bridged Mono Mode Connections Page 12 • • • • • • • • Bridged/Mono • • • • Crest Audio PL Series Power Amplifiers Models PL3301, PL4601, PL6001, PL7001, PL8001, PL9001 643-106...
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Page 13: Protection Features
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. -
Page 14: User Precautions
The amplifier’s clipping point is its maximum peak output power. At maximum peak output power, Crest Audio PL Series amplifiers will deliver more power than many speakers can safely handle. Be sure the peak power capability of the amplifier is not excessive for your speaker system. To ensure that the speakers never receive excessive power, and to prevent amplifier clipping, use a properly adjusted external limiter (or a compressor with a ratio of 10:1 or higher) to control power output. -
Page 15: Maintenance
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”... - Page 17 Appendices...
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Page 18: Specifications
Sens .775V X86.5 .775V X97.5 .775V 1.32V 1.66V 1.87V 2.65V 3.32V 3.74V Crest Audio PL Series Power Amplifiers PL9001 1000W (.03% THD+N) 1800W (.03% THD+N) 2500W (.03% THD+N) 3600W (.03% THD+N) 5000W (.03% THD+N) 950W 1700W 2400W 3400W 4800W 140V... -
Page 19: Pl Block Diagram
INVERTED PIN 2 / 3 + JUMPER (REAR PANEL SWITCH ON PL9001) (REAR PANEL SWITCH ON CA18) Crest Audio PL Series Power Amplifiers Models PL3301, PL4601, PL6001, PL7001, PL8001, PL9001 Appendix B - PL Block Diagram CHANNEL A PREAMP ATTENUATOR †... -
Page 20: Wire Gauge Charts
Models PL3301, PL4601, PL6001, PL7001, PL8001, PL9001 Power Loss (2 ohm load) 3.2% 1.28 0.80 0.51 6.2% 1.60 1.01 14.6 17.8 11.8 Power Loss (2 ohm load) 10.8% 1.39 0.87 15.5% 10.8 1.45 19.9 10.8 18.2 12.0 Crest Audio PL Series Power Amplifiers... -
Page 21: Rear Panel Symbols - Legend
Output Connection Section Output Connection - Channel A Stereo/Parallel Output Connection - Bridged Mono Output Connection - Channel B Stereo/Parallel Crest Audio PL Series Power Amplifiers Models PL3301, PL4601, PL6001, PL7001, PL8001, PL9001 Appendix D Rear Panel Symbols - Legend... - Page 22 Designed & manufactured in the USA by: GAIN Crest Audio Inc. 40x 20x 100 Eisenhower Dr. Ø Paramus, New Jersey 07652 USA XLR Pin + Gain Switch XLR Pin (+) Switch Models PL3301, PL4601, PL6001, PL7001, PL8001, PL9001 Crest Audio PL Series Power Amplifiers...
- Page 23 Notes Crest Audio PL Series Power Amplifiers Appendix E Models PL3301, PL4601, PL6001, PL7001, PL8001, PL9001...
- Page 24 Crest Audio Inc. 100 Eisenhower Dr., Paramus NJ 07652 USA : 201.909.8700 : 201.909.8744 http://www.crestaudio.com Printed in USA C4400009 v. 1.1 10/22/97 © 1997 Crest Audio, Inc. Choice of touring professionals. C4400009...