MartinLogan pmn - Manual (Page 4)

Your Clarity speakers use external low-voltage power sup-
plies to energize their electrostatic panels. For this reason the
proper low-voltage power supplies are provided. A power
supply should be firmly inserted into the ‘DC Power In’
receptacle on the rear connection panel of each speaker,
then to any convenient AC wall outlet. Your Clarity’s inte-
grate a signal sensing circuit which will switch the Clarity
off after a few minutes of no music signal, and requires less
than two seconds to recharge the panels when a music
signal is present.
Your Clarity speakers are provided with a power supply for
the power service supplied in the country of original con-
sumer sale. The AC power rating applicable to a particular
unit is specified both on the packing carton and on the
DC power supply.
If you remove your Clarity speakers from the country of
original sale, be certain that the AC power supplied in any
subsequent location is suitable before connecting the low-
voltage power supply. Substantially impaired performance
or severe damage may occur to a Clarity speaker if opera-
tion is attempted from an incorrect AC power source.
WARNING! The DC power supply should not be
installed, removed, or left detached from the speak-
er while connected to an AC power source.
Signal Connection
Use the best speaker cables you can. The length and type
of speaker cable used in your system will have an audible
effect. Under no circumstance should a wire of gauge higher
(thinner) than #16 be used. In general, the longer the length
used, the greater the necessity of a lower gauge, and the
lower the gauge, the better the sound, with diminishing
returns setting in around #8 to #12.
A variety of speaker cables are now available whose man-
ufacturers claim better performance than standard heavy
gauge wire. We have verified this in many cases, and the
improvements available are often more noticeable than the
differences between wires of different gauge. Effects of cables
may be masked if equipment is not of the highest quality.
We also recommend, if possible, that short runs of speaker
cable connect the power amplifier(s) and speakers and that
high quality long interconnect cables be used to connect the
preamplifier and power amplifier. This results in the power
amplifiers being close to the speakers, which may be prac-
tically or cosmetically difficult, but if the length of the speaker
cables can be reduced to a few meters, sonic advantages
may be obtained.
Connections are done at the signal input section on the
rear electronics panel of the Clarity. Use spade connectors
for optimum contact and ease of installation. Make certain
that all of your connections are tight. Be consistent when
connecting the speaker cables to the signal input terminals.
Take care to assign the same color cable lead to the (+) ter-
minal on both the left and right channel speakers. If bass is
nonexistent and you cannot discern a tight, coherent image,
you may need to reverse the (+) and (–) leads on one speak-
er to bring the system into proper polarity (see figure 1).
WARNING! Turn your amplifier off before you
make or break any signal connections!
Low-Voltage (DC) Power Connection
Figure 1. Single-wire and power connection. One channel shown.
O
PERATION
4 Operation