supply voltage and limiting circuits are set to drive optimally an 8 ohm load per channel (or a 16 ohm bridge
load). (A more thorough impedance discussion will follow in the speaker outputs section.) When using this
switch, two important facts must be considered:
the instantaneous charging currents can cause the switch to arc
and this could degrade the switch contacts to where they could fail. Second, since this selector switch is a slider
type, one must be certain that it is “slid” into the proper position. This is particularly critical in the center posi-
tion (8 ohms) where a slight offset from center could cause the switch contacts to not “make” properly. If the
switch is positioned far from center, but not all the way to either side, it is possible to lose power completely on
the amp or have only one of the two switch contacts “make.” This can cause severe power transformer overheat-
ing and possible failure!
A
Two
jacks and
binding post speaker output terminals are provided for each channel. All
these outputs are in parallel, hence the speaker connection cables can be terminated with
phone
plugs, banana plugs, or stripped wires for use in the binding post terminals. For sustained high power
applications, the use of the binding post terminals are recommended. However, care must be exercised to assure
the correct speaker phasing. Regardless of what connections are used, the typical parallel speaker load should
always be limited to no less than half of the impedance selector switch setting per channel or 2 ohms per chan-
nel, whichever value is greater. This also should be limited to no less than the impedance selector switch setting
or 4 ohms in BRIDGE mode, whichever value is greater. Operation at the load values of the Impedance Selector
switch setting per channel, or twice that of the impedance selector setting in BRIDGE mode, is more desirable
for sustained operation applications due to the fact that the unit will operate much cooler with these load values.
Operation above these load impedances and open circuit conditions can always be considered safe. However,
sustained operation at loads below the impedance selector switch setting per channel and below twice that of the
impedance selector switch setting in BRIDGE mode could result in temporary amplifier shut down due to the
thermal limits and/or the internal fault circuitry. (A chart listing the allowable loads for the various impedance
selector values is included.)
This breaker is provided to limit the current to the associated power transformer and protect it from overheating
and possible destruction due to fault conditions in the amplifier. The trip current values have been carefully
chosen to allow continuous power output performance while still protecting the power transformer. Normally,
these breakers should not trip unless there is a fault in the amplifier circuitry that draws excessive mains current.
However, abnormal conditions such as a short circuit on either or both channels, or continuous operation at
overload or clipping (especially into impedance below the impedance selector switch setting per channel and
twice the impedance selector setting in bridge mode) will cause the breaker to trip. If this occurs, turn the power
switch off, then simply reset the breaker and correct the cause of the overload.
A
When tripped, the button on the breaker will be 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 the
breaker trips instantly each time you attempt to reset it, the unit should be taken to a qualified service center
for repair.
A
The CS
is fitted with a heavy duty
AWG 3 conductor line cord and a conventional AC
plug with a ground pin. It should be connected to an independent mains circuit capable of supporting
at least 15 AMPS continuously or greater. This is particularly critical for sustained high power
applications when two or more CS 200X’s are employed on the same circuit. If the socket used does not have a
ground pin, a suitable ground lift adaptor should be used and the third wire grounded properly.
Содержание CS 200X
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