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. [. . . ] One channel "pushes" and the other "pulls" equally, effectively quadrupling the power over that of either channel alone. Signal is connected to the input barrier strip as shown in the drawing below, with one jumper connecting the positive (+) terminal of Input A to the negative (-) terminal of Input B, and another jumper connecting the negative (-) terminal of Input A to the positive (+) terminal of Input B. 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. Note: Use extreme caution when operating in bridged mono mode. 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)!There are, however, specific applications for this configuration. 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. The standard factory setting is for X40 (32dB). (Refer to the specifications for more gain/sensitivity information). The diagram below shows the location of these jumpers. 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. [. . . ] (12. 35 kg) 3. 5"x19. 0"x17. 13" 89x483x435mm 35. 66 lbs. (13. 92 kg) 5. 25"x19. 0"x17. 13" 133x483x435mm 58. 20 lbs. (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. [. . . ]