A
GRILLE (6)
The back panel includes the fan opening with protective grille
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
and defeating this
valuable limit can eventually cause the speakers to be damaged.
MAINS POWER SOURCE (120V products only) (8)
The CS 1200X is fitted with a single heavy-duty
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
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
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
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
and can be reset by
pushing inward. A normal reset button length is about
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.
Summary of Contents for CS 1200X
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