Meyer Sound Self-Powered Loudspeaker HM-1 - Manual (Page 7)

7
R E - C IRK- IT
PU SH
Installed fans blow air over the heatsinks
The fans attach easily to the two bottom rear corners of
the HM-1. Use a
5 /
32
” Allen wrench to remove the bottom
screws and install the left and right fans according to the
diagram below. The fans are shipped with a correctly
wired terminal plug keyed for insertion into the fan
connector in the proper orientation only.
The fan speed is temperature controlled. At a heatsink
temperature of 25
°
C, the fans turn on at half speed and
increase speed linearly until reaching full speed at
75
°
C.
Protection and Limiting
The front of the HM-1 has two LEDs that indicate power
and limiter activity. The right LED is green when power is
applied. This LED turns red if thermal limiting occurs
(described in the section Cooling and Fan Installation)
until the temperature decreases to 75
°
C.
The left LED indicates driver limiter activity with a
variable intensity red color; full illumination occurs at
thermal limiting.