OPERATION
Your new CAD 120S MKII power amplifier is ready for operation after the speaker, interconnect cables and the vacuum tubes have been installed into their proper sockets. Refer to the labeling on the chassis for placement and proper tube installation.
SPEAKER BINDING POSTS
The CAD 120S MKII will drive loudspeaker loads from as low as 2 ohms to a high of 16 ohms without any adjustment. Please remember to keep the proper phase on each channel when connecting the loudspeaker cables. Red is positive and black is the negative lead.
TRIODE OR ULTRA-LINEAR MODE SWITCH
The push button located on the lower right side of the front panel will toggle from triode to
POWER ON / OFF SWITCH
The front panel push button located to the lower left is a power on power off selector. With the CAD 120S MKII plugged into the wall AC outlet this button will engage the
BIAS MEASUREMENT AND ADJUSTMENT
Setting the operating bias levels on the CAD 120S MKII is a rather simple matter thanks to the built in front panel DC current meters. These two meters indicate the DC current being drawn by each channel. The meter to the left reflects the operating current for the left channel. The corresponding meter to the right indicates the operating bias level of the right channel. From the factory the bias has been set to approximately 140 ma. DC current on each channel. This read out will vary with different AC wall voltages.
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