Driver Interconnections; Amplifier Cooling System - Meyer Sound UPM-1P Operating Instructions Manual

The UPM-1P and UPM-2P loudspeakers perform within their
acoustical specifications and operate at a normal temperature
if the limit LEDs are on for no longer than two seconds, and
off for at least one second. If either LED remains on for longer
than three seconds, that channel incurs these consequences:
■ Increasing the input level will not increase the volume.
■ The system distorts due to clipping and nonlinear driver
operation.
■ Unequal limiting between the low and high frequency
drivers alters the frequency response.
■ The lifespan of the drivers is reduced because they are
subjected to excessive heat.
Limiters protect the system under overload conditions and
exhibit smooth sonic characteristics, but it is recommended
that you do not drive the loudspeaker into continuous limit-
ing.
CAUTION:
The limit LEDs indicate when
!
the safe power level is exceeded. If the
loudspeakers used in the system begin to limit
before reaching the required SPL, consider adding
more loudspeakers to satisfy the SPL requirements
without exposing the drivers to excessive heat and/
or excursion.

DRIVER INTERCONNECTIONS

The two 5-inch, low-frequency drivers are powered by
one channel of the amplifier. The single 1-inch metal dome
high-frequency driver is powered by the other channel.
Figure 2.4 shows how the UPM-1P and UPM-2P drivers are
connected to the amplifier.
1" METAL DOME
TWEETER
5" LOW-MID
DRIVER
5" LOW
DRIVER
Figure 2.4: UPM-1P/UPM-2P internal wiring harness diagram
CAUTION: All Meyer Sound loudspeakers are
!
shipped with the drivers in correct alignment.
However, if a driver needs to be replaced, make
sure the replacement is reinstalled with the correct
polarity. Incorrect driver polarity impairs the system
performance and may damage the drivers.
White (+)
+
Green (-)
Blue
(+)
+
+
CHAPTER 2
Red
(+)
Black (-)
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