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Peavey CS 1200X manual

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Table of contents for the manual

  • Page 1

    [...]

  • Page 2

    A lntended to alert the user to the presence of uninsulated “dangerous voltage” within the product’s enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons. A Intended to alert the user of the presence of important operating and maintenance (servicing) instructions in the literature accompanying the pr[...]

  • Page 3

    A WARNING! For optimum performance and reliability DO NOT PRESENT THE AMPLIFIER WITH A SPEAKER LOAD OF LESS THAN 2 OHMS, OR A COMBINATION OF SPEAKERS THAT TOGETHER ARE LESS THAN 2 OHMS! Using one speaker, it must be rated at 2 ohms minimum. Using two speakers, they must be rated each at 4 ohms minimum. Using three speakers, they must be rated each [...]

  • Page 4

    CHANNEL A lN!wT -- SEN!3TlVITY MADE IN U.S.A. CHANNEL 0 INPUT SENSITIVITY CS” 12ooz PROFESSIONAL STEREO POWER AMPLIFIER DDTTM ACTIVE LEDs (1) The DDTTM active LEDs indicate when compression is taking place. As long as gain reduction is occurring, the LED will continue to light, thereby giving a valuable indication of this unique compression funct[...]

  • Page 5

    that particular channel. Operation at power output levels below 100% will naturally be indicated by lower LED readings. The lowest value indicated is 0.4% of full power, which corresponds to 2.0 watts RMS output into 4 ohms. Operation below that power level will not be indicated, since the lowest LED is calibrated at 0% or standby. As mentioned, th[...]

  • Page 6

    A GRILLE (6) The back panel includes the fan opening with protective grille (6), where cooling air is drawn into the amplifier. This opening should never be blocked or restricted. DDT SWITCH (7) This switch is used to either ENABLE or DEFEAT the DDT compressor. Defeating the DDT compressor should not be performed lightly or simply as a matter of co[...]

  • Page 7

    MODE SWITCH (10) The mode switch is located on the “back-porch” next to the channel input jacks. This switch converts the CS 1200X from normal stereo mode to bridge mode. Bridge-mode operation is very popular for commercial sound distribution systems (70/l 00 volt lines). A WARNING: In bridge mode, the CS 1200X is capable of delivering 1200 W R[...]

  • Page 8

    amp channel or at the input of the PL-MODULE ELECTRONIC CROSSOVER when BIAMPING, the (PL-2) transformer must be inserted here. Otherwise a blank plug (PL- 1) is inserted in this socket. CROSSOVER INPUTS (13) These are the HIGH-Z INPUTS when an ELECTRONIC CROSSOVER module is installed. Two parallel input jacks are provided at this point, allowing fl[...]

  • Page 9

    per channel or 4 ohms BRIDGE mode for any application. Operation at loads of 4 ohms per channel or 8 ohms BRIDGE mode is more desirable for sustained operation applications, be- cause the amplifier will run much cooler at this load. Operation above 4 ohms per channel and even open-circuit conditions can always be considered safe; however, sustained[...]

  • Page 10

    OPERATION The CS 1200X is designed for maximum ease and flexibility of operation. When the unit is installed and connected as described in the previous sections, operation is as simple as turning on the mains switch (S), turning up the sensitivity controls (4) to the full clockwise setting, and then adjusting the associated mixer or pre-amplificati[...]

  • Page 11

    2. STEREO MODE (BALANCED INPUTS) When conditions require the use of a balanced input at the power amplifier, the XLR connectors (11) on either or both channels can be converted to a balanced configuration by removing the jumper plug from the transformer accessory socket (12) and plugging in an input transformer module (PL-2). The Peavey model PL-2 [...]

  • Page 12

    isolated (no longer connected to anything). In other words, the crossover modules and all associ- ated connectors (as well as the PL-2 transformers and respective XLR connectors) are islands unto themselves: in this case, two islands with each crossover having a balanced input (1 l), dual (parallel) unbalanced inputs (13), an unbalanced low output [...]

  • Page 13

    mode. Remember, the 4-ohm minimum load must be connected between the red binding posts. If individual loads were connected to each output (as in normal stereo applications) when the bridge mode is selected. Channel A would supply a normal in-phase signal to its respective load, but Channel B would supply an abnormal out-of-phase signal to its respe[...]

  • Page 14

    turn really is maximum compression range), the input sensitivity control should be set at Ihe maximum clockwise setting. This is always the best setting to start with. If, however, the ampti- fier is used in a small club, church, or studio application where the full-output capability of the power amplifier is seldom needed, or there is no need for [...]

  • Page 15

    normal intermittent applications, low-speed fan operation will provide adequate cooling. Since the CS 1200X is a redundant two-channel amplifier, but only one fan is employed, the fan circuitry is an independent system, separately fused internally. You will notice that the heat sink components are divided horizontally. The lower half contains Chann[...]

  • Page 16

    The result usually is severe clipping (distortion) of the high-frequency material. In a biamplified system, the high-frequency material is routed to its own power amplifier (and associated loud- speaker), which avoids the clipping problem. This results in an effective increase in system headroom that is greater than that which is obtained by simply[...]

  • Page 17

    , 5. 6. ule. In this case, the associated XLR connector (11) is now unbalanced as per previous discussion. If desired, the parallel unbalanced phone jack inputs (13) may be used to supply signal to the crossover module. In addition, whenever the XLR connector on a particular crossover island is used (either balanced or unbalanced), the crossover in[...]

  • Page 18

    SPECIFICATIONS Characteristics: (@ 120 V AC, 60 Hz) Output Power: (Typical Value) Stereo mode, both channels driven 2 ohms, 1 kHz, 1% THD 4 ohms, 1 kHz, 1% THD 8 ohms, 1 kHz, 1% THD Bridge mode, mono 4 ohms, 1 kHz, 1% THD 8 ohms, 1 kHz, 1% THD Rated Output Power: Stereo mode, both channels driven 4 ohms, 20 Hz to 20 kHz, 0.03% THD 8 ohms, 20 Hz to [...]

  • Page 19

    k’requency Response: (Typical Value) Stereo mode, both channels driven +O, -1 dB, 1 W RMS, 4 ohms +O, -0.2 dB @ rated output, 4 ohms Damping Factor: (Typical Value) Stereo mode, both channels driven 4 ohms, 1 kHz Hum & Noise: Stereo Mode, both channels driven Below rated output power, 4 ohms Power Consumption: Stereo mode, both channels drive[...]

  • Page 20

    CS42OOX PATCH DIAGRAMS Channel A Speakers Channel A (Shielded) Channel A Speakers Stereo Mode Channel B (ShIelded) PATCH DIAGRAM 1 Stereo Operation Unbalanced High Z Inputs (Typical Home Stereo) Channel A Channel A pL-2 (Balanced) Channei A Stereo Mode Jumper Plugs il Channel B (Balanced) PATCH DIAGRAM 2 Stereo Operation Balanced Low Z Inputs (Bala[...]

  • Page 21

    THIS LIMITED WARRANTY VALID ONLY WHEN PURCHASED AND REGISTERED IN THE UNITED STATES OR CANADA. ALL EXPORTED PRODUCTS ARE SUBJECT TO WARRANTY AND SERVICES TO BE SPECIFIED AND PROVIDED BY THE AUTHORIZED DISTRIBUTOR FOR EACH COUNTRY. Ces clauses de garantie ne sont vaiables qu’aux Etats-Unis et au Canada. Dans tour les autres pays, les clauses de ga[...]

  • Page 22

    IMPORTANT SAFETY INSTRUCTIONS WARNING: When using electric products, basic cautions should always be followed, including the following. 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17 18 Read all safety and operating instructions before using this product. All safety and operating instructions should be retained for future reference. Obey[...]