EXP X-800C, Operating Instructions Manual, Page: 16 / 28

CHAPTER 3: AMPLIFICATION AND AUDIO
16
CAUTION: To keep the X-800C from getting
too hot, allow for proper ventilation, 6 inches,
behind the loudspeaker.
When the X-800C heat sink temperature is below 42° C, the
variable-speed primary fan runs continuously at its slowest
speed with an inaudible operating noise. The primary fan
increases speed when the heat sink temperature reaches
42° C; the primary fan reaches full speed at 62° C and is
barely audible near the cabinet, even without an audio sig-
nal. If the heat sink temperature reaches 74° C, the reserve
fan turns on. The reserve fan turns on if:
■ The primary fan has failed (check status immediately)
■ High source levels are encountered for extended periods
■ Dust has accumulated along the cooling path
The reserve fan turns off when the heat sink temperature
lowers to 68° C.
NOTE: In the unlikely event that the reserve fan
does not keep the X-800C heat sink tempera-
ture below 85° C, the unit automatically shuts down
until AC power is removed and reapplied. If the
X-800C shuts down again after cooling and re-apply-
ing AC power, contact Meyer Sound for repair infor-
mation.
Dust and the Amplifier Module
Operating the X-800C in dusty environments, or for pro-
longed, intensive periods, may cause dust to accumulate
along its airflow path, thereby preventing normal cooling.
Under these circumstances, it may be necessary to periodi-
cally remove the air intake foam and use compressed to air
to clear the dust from the foam and air ducts.
In addition, if the amplifier gets unusually hot, you should
remove the amplifier module and use compressed air to
clear any dust from its heat sink.
CAUTION: Make sure to unplug the AC power
from the X-800C before cleaning its amplifier.
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