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 course. Most loudspeaker systems simply cannot handle the square wave power of the CS 1200X, and defeating this valuable limit can eventually cause the speakers to be damaged.
MAINS POWER SOURCE (120V products only) (8)
A The CS 1200X is fitted with a single heavy-duty #14 AWG 3 conductor line cord and a conven- tional AC plug with a ground pin. It should be connected to an independent mains circuit capable of delivering at least 15 AMPS continuously. This is particularly critical for sustained high- power applications. If the socket does not have a ground pin, a suitable ground lift adaptor should be used, and the third wire grounded properly. Never break off the ground pin on the
CS 1200X or any amplifier. The use of extension cords should be avoided, but if essential, always use a three-wire type with at least a #14 AWG wire size. The use of lighter wire will severely limit the power capability of this amplifier. Always use a qualified electrician to install any necessary electrical equipment. To prevent the risk of shock or fire hazard, always be sure that the amplifier is properly grounded.
CIRCUIT BREAKERS (9)
The new CS 1200X now features circuit breakers in place of the mains fuses. These breakers are provided to limit the mains current to the associated power transformers, thereby protecting them from overheating and possible destruction due to any fault conditions in the amplifier. The trip current value has been carefully chosen to allow continuous power output performance, while still providing adequate protection for the power transformer itself. Normally the breakers should not trip; however, abnormal conditions such as a short circuit on either or both channels, or continuous operation at overload or clipping, especially into a 2-ohm load, will cause the breakers to trip. If this occurs, simply reset the breaker and correct the cause of the overload. When tripped, the button on the breaker will be extended outward nearly l/2” and can be reset by pushing inward. A normal reset button length is about l/4”. If this “thermal”-type breaker does trip, simply pushing the button back in will reset it, after waiting a brief period of time to allow it to cool down. If a breaker trips instantly each time you attempt to reset it, then the unit should be taken to a qualified service center for repair.
The back panel of the CS 1200X features a unique “back-porch” design containing the various input and output connectors for each channel. A patch panel is also included, providing a very flexible system for use with balanced-input transformers and dual crossover networks. These features are unduplicated in any other stereo power amplifier on the market today.
