MartinLogan Center Channel speaker - Manual (Page 5)

Because your MartinLogan Theater uses an internal power
supply to energize its electrostatic cells with high-voltage
DC, it must be connected to an AC power source. For this
reason it is provided with the proper IEC standard
power cord. This cords should be firmly inserted into the
AC power receptacles on the rear connection panel of the
speaker, then to any convenient AC wall outlet. The Theater
integrates a signal sensing power supply which will switch
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 Theater speaker is wired for the power service supplied
in the country of original consumer sale. The AC power
rating applicable to a particular unit is specified both on the
packing carton and on the serial number plate attached to
the speaker.
If you remove your Theater speaker from the country of
original sale, be certain that AC power supplied in any
subsequent location is suitable before connecting and
operating the speakers. Substantially impaired performance
or severe damage may occur to the Theater speaker if oper-
ation is attempted from an incorrect AC power source.
WARNING! The power cord should not be installed,
removed, or left detached from the speaker while
the other end is 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
manufacturers claim better performance over 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. The
effects of cables may be masked if the equipment is not of
the highest quality.
We also recommend, if possible, that short runs of speaker
cable connect the power amplifier and speaker 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 practically 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 Theater (see figure 1). Use spade
connectors for optimum contact. Make certain that all of
your connections are tight.
Be consistent when connecting speaker leads to the terminals
on the back of the Theater: take great care to assign the
same color to the (+) terminal on both the speaker and
the amplifier.
WARNING! Turn your amplifier off before making
or breaking any signal connections!
Break-In
When you first begin to play your Theater speaker, it will
sound a bit bass shy. This is due to the high-quality, long-life
components used in our woofer. Our custom made, butyl
surround woofer requires at least 30 hours of break-in at
90 dB (moderate listening levels) before any critical listening.
The break-in requirements of the crossover components
(and, to a lesser degree, the electrostatic transducer) are equal.
O
PERATION
Operation 5
AC Power Connection
Figure 1. Speaker cable connection on rear panel of the Theater.
Amplifier speaker output
T
H E A T E R TM
Center Channel
Speaker
Input