6
X600.5 Owners Manual
Now that the source component is connected, make sure there is no
signal coming from it, probably by turning the volume all the way
down.
With the speakers connected, push the front panel button to activate
the amplifier. The “Power” LED will come on.
Do everybody a favor and try not to have shorted output cables. It hap-
pens accidentally all the time, and the amplifier is designed to survive,
mostly.
Of course it’s always possible that something could go wrong. If so,
don’t get excited, just relax. It’s really aggravating when something like
this doesn’t work, we understand, but it will get fixed. We go to a lot of
trouble to make products reliable, and the failure rate of our amplifiers
is very low. This is small comfort to the few, but take it easy and give us
a call if you have problems.
People are often interested in how long it takes for these amplifiers to
break in. Perhaps a more salient question is how long does it take them
to reach their sonic best after turn on. It takes about an hour for them
to fully warm up, and this is where we adjust them first. Then we adjust
them again and again over a couple of days, keeping the bias and offset
in the sweet spot. Our environment is about 23 degrees Centigrade and
the heat sinks will rise approximately 25 degrees C. above that, for an
average on heat sink temperature of 48 degrees C. Sonically they are at
their best when the heatsinks are approximately 50 degrees C.
In your setup the temperature may vary a bit due to line voltage varia-
tions and ventilation, but this is not a big deal. You should be able to
put your hands on the heat sinks without discomfort for 10 seconds or
so. It is normal for the heasink temperature to vary side-to-side and
front to back.
The amplifier has a thermal cutout that will disconnect AC power if the
temperature exceeds 75 degrees Centigrade. This should never occur
in real life.
More things to know
You can remotely operate the stand-by mode by applying 12 volts DC
to the single pair of binding post connectors on the rear of the ampli-
fier. The positive of the 12 volts DC goes to the red connector. This
connection has an actual operating range of about 9 volts to 15 volts at
a current draw of approximately 5.0mA. This switching will override
the front panel button, so if you want the front panel button to operate,
leave the rear connection open.
You are ready to play music
