User manual CREST AUDIO CKS SERIES

[. . . ] POWER PROCESSING AMPLIFIERS On Off Remote Protect ACL Ch A ACL Ch B Active Signal Signal CKS 800 Professional Power Amplifier On Off Remote Protect ACL Ch A ACL Ch B Active Signal Signal CKV 80 0 Professional Power Amplifier On Off Remote Protect ACL Ch A ACL Ch B Active Signal Signal CKX 500 Professional Power Amplifier OWNER'S MANUAL Important Precautions This symbol is used to alert the operator to follow important operating procedures and precautions detailed in documentation. 10. Power down & disconnect units from mains voltage before making connections. Never hold a power switch in the "ON" position if it won't stay there itself!Do not use the unit near stoves, heat registers, radiators, or other heat producing devices. [. . . ] Both channel attenuators (A&B) are used to control signal level, and both must at the same level, preferably at 0dB attenuation. The speakers are connected only to the designated "+" output terminals as shown below. Never ground either side of the speaker cable when the amplifier is in bridged mono mode; both sides are "hot. " If an output patch panel is used, all connections must be isolated from each other and from the panel. For CKS Series amplifiers, the recommended minimum nominal load impedance in bridged mono mode is 8 ohms, the equivalent to driving both channels at 4 ohms. [For models CKS 800-2, 1200-2 and 1600-2, the recommended minimum nominal load impedance in the bridged mono mode is 4 ohms, equivalent to driving both channels at 2 ohms]. Note: Driving loads of less than the recommended minimums will activate the IGM circuitry, resulting in a loss of power, and may also cause a thermal protect condition. Bridged Mono Mode Connection Diagram. CLASS 2 WIRING MAY BE USED Output +8 to 18VDC 20 mA LISTED 8B42 COMMERCIAL POWER AMPLIFIER ­ A + In Out Com NEC CLASS 2 ONLY 120V~60 Hz 15A + B ­ Signal Ground Lift Jumper Model CC-STL CLASS 2 WIRING MAY BE USED Output +8 to 18VDC 20 mA LISTED 8B42 COMMERCIAL POWER AMPLIFIER ­ A Level 456 A3 7 2 1 0 Input A Input B + In Out Com NEC CLASS 2 ONLY 8 9 10 Bridged Mono Mode - CKV & CKX Series. CKV and CKX Series amplifiers can also be wired for Bridged Mono mode operation. However, bridging these models is usually undesirable, as the resultant output will be approximately 140V (CKV) or 200V (CKX)!Contact Crest Audio Customer Service for more information if required. 120V~60 Hz 15A + B Level 456 B3 7 + ­ + ­ 2 1 0 ­ Signal Ground Lift Jumper 8 9 10 Model CC-STL Model CC-IPB +- +- Regardless of operating mode, NEVER connect amplifier outputs together! Crest Audio CK Power Processing Amplifiers +++- Level 456 A3 7 2 1 0 Input A Input B 8 9 10 Level 456 B3 7 + ­ + ­ 2 1 0 8 9 10 Model CC-IPB +Ch. A Page 5 Input Bay. Input Module Connections and Controls. Input barrier strips have a 0. 325" (8. 3mm) center and 0. 270" (6. 9mm) lug space. For connecting to the input barrier strips, a wire gauge between 14 AWG (2. 5mm2) & 24 AWG (0. 25mm2), and spade lugs (Panduit Part No. PNF 18-6LF-C or equivalent) are recommended. Input Module Connections and Controls Diagram. SEE INSTRUCTION MANUAL all input NC modules), labeled "W1 W2 W3", are used to set the overall gain of the amplifier. The 3 positions allow the amplifier to be set for constant gain of X20 (26 dB), X40 (32 dB), OR constant sensitivity for full output (. 775V) at 0 dBu input. All jumpers must be set to the same position as indicated in the drawing below. To change jumper settings, the Input module must first be removed from the amplifier chassis. This operation is covered in the section "Module Removal/Replacement". All NC Modules have internal jumpers used to set the module for operation with NexSys or N-Coder. These jumpers are labeled "W4 W5" on the Input module circuit board. The "NC-NXS" jumper position allows operation with NexSys, while the "NCODE" jumper position permits the Input module to be programmed through NCoder or N-Coder/PC software when the amplifier is off . If NexSys, N-Coder, or NCoder/PC software is not being used, jumper position will have no effect upon the operation of the amplifier. Gain Select Jumpers Diagram. Channel A Jumper Channel B Jumper NexSys Indicator Jumper (NC-IPN Only) Level 456 A 3 7 2 1 0 Input A Input B 8 9 10 Level 456 B 3 7 + ­ + ­ 2 1 0 8 9 10 Model CC-IPB Input Barrier Strip Input Level Attenuators Removable Attenuator Knobs. With an X-Acto or similar knife, pop off the grey key cap of the attenuator knob. Using a needle nose pliers or appropriate size nut driver, loosen the inside nut. [. . . ] (22. 80 kg) 7. 0"x19. 0"x17. 13" 178x483x435mm 78. 65 lbs. (32. 08 kg) 7. 0"x19. 0"x17. 13" 178x483x435mm 78. 65 lbs. (13. 37 kg) 5 Years (USA, Canada, United Kingdom, and many other countries) * 0. 02% THD+N Voltage Gain / Input Sensitivity Options CKS100 Gain X40 X20 X25. 8 Sens 0. 5V 1. 0V . 775V CKS200 Gain X40 X20 X36. 5 Sens 0. 70V 1. 41V . 775V CKS400 Gain X40 X20 X51. 6 Sens 1. 0V 2. 0V . 775V CKS800 Gain Sens X40 1. 41V X20 2. 82V X73 . 775V CKS800-2 Gain Sens X40 1. 41V X20 2. 82V X73 . 775V CKS1200-2 Gain X40 X20 X89. 4 Sens 1. 73V 3. 46V . 775V CKS1200-2 Gain X40 X20 X96. 5 Sens 1. 87V 3. 74V . 775V 9/4/97 Factory Standard ("+32dB") Option 1 ("+26dB") Option 2 ("0dBu") Power figures are watts per channel, both channels driven Crest Audio reserves the right to make improvements in manufacturing or design which may affect specification Crest Audio specification literature is available in downloadable PDF format; visit our website at http://www. crestaudio. com ©1997 Crest Audio Inc. Appendix A Crest Audio CK Power Processing Amplifiers Appendix B - CKV Series Specifications. CKV100 Output Power, 70. 7 Volt Max RMS Output Voltage (each channel) Peak Output Voltage (each channel) Frequency Response (+0 / -0. 3dB, 1W/70. 7V) Power Bandwidth (full power, 1% THD+N) TourClass® Protection THD+N (rated power, 1kHz) SMPTE IMD (rated power, 60Hz & 7kHz) Input CMRR (1kHz) Input Sensitivity (rated power) Voltage Gain Input Impedance (balanced, unbalanced) Hum and Noise (below rated power) Crosstalk (below rated power) Class Input Connectors (per channel) Output Connectors (per channel) Filter Storage Power Supply (factory configured) Idle Current Draw (PowerSave active, 120V) 1/8 Power Current Draw (typical music, 120V) 1/3 Power Current Draw (cont. music, 120V) Max Current Draw (breaker rating, 120V) Thermal Emissions (1/8 Power, 120V) Thermal Emissions (1/3 Power, 120V) Cooling Controls LED Indicators (per channel) Construction Dimensions (Height x Width x Depth) Net Weight Gross Weight Warranty Voltage Gain / Input Sensitivity Options 3. 5"x19. 0"x17. 13" 89x483x435mm 30. 26 lbs. 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