WARNING: Always unplug the AC (POWER) input
and audio feeds before accessing the inside of the
Interface.
1)
Even after the power is removed, a high voltage charge
remains on the array for at least many
hours.
2) To discharge the array, remove the RED coded array wire
and touch its
tip
(while holding the wire's insulation, NOT
the metal plug) to any other array wire connection. Unless
the speaker has been de-energized for some time, expect
to
see a spark and hear a snap from the speaker.
3)
The speaker will
now
be
safely discharged, and disassem-
bly
may
procedd.
Audio Input
The red/black input terminals are standard,
3/4"
spacing,
banana jacks. They may accept single or dual banana plugs,
spade lugs, pin plugs, or bare wires.
There are four
possible ways to connect the loudspeaker
to
the system amplifier(s). For all connections, be sure to
observe polarity markings for both channels: Red (+) to Red
(+),
and Black
(-)
to
Black (-). All Acoustat Loudspekaers
are
designed
to preserve absolute phase integrity: i.e. when
the
red input terminal is positive with respect
to the black termi-
nal, the electrostat's diaphragm will move forward.
Standard
Connection:
See Figure Four. This configuration
allowsasingle stereo amplifier to power both the electrostatic
array and the woofer. To implement, connect the amplifier's
output
to the 'ESUSYSTEM INPUT" terminals, and set the
switch to 'SINGLE AMP". No connection
is made
lo
the
"WOOFER INPUT terminals.
Bi-Wire
Connection:
See Figure Five. This configuration
allowsasingle stero amplifier to power both the electrostatic
array and the woofer. but allows use of
two
separate cables
to
feed each section. To implement, connect the amplifier's
7
output
to
the "ESUSYSTEM INPUT" terminals using
one cable, and using another cable, connect the
same amplifier channel's output to the WOOFER
INPUT" terminals. Set the switch to the "BI-AMP/BI-
WIRE"
position.
Bi-Amp Connection: See Figure Six. This configura-
tion
allows one stereo amplifier to power the electro-
static array, and a
second
stereo amplifier
to
power
the woofer. To implement, connect one amplifier's
output
to
the "ESL SYSTEM INPUT terminals, and
connect
the second amplifier's output to the
"WOOFER
input" terminals. Set the switch to the "BI-AMP/BI-
WIRE" position. The two amplifiers need
not
be
identical, but should have similar power ratings, and
must
have identical gain (sensitivity).
Alternate Bi-Amp
Connection:
See Figure Seven.
Thisconfiguration allowsone stereo amplifierto power
the left speaker, and a second stereo amplifier to
power the right speaker. The advantage of this set up
is that it allows each power amplifier to be placed
close to the corresponding speaker, avoiding long
speaker cable runs. To implement, connect one
channel of the "left" amplifier to the left speaker's
"ESUSYSTEM INPUT" terminals, and connect the
other channel to the left speaker's WOOFER IN-
PUT". Repeat the process for the right channel. Set
the switch to BI-AMP/BI-WIRE" positiin. The two
amplifiers MUST be identical for this configuration.
Note that the BI-AMP/BI-WIRE switch disconnects
both
(+)
and
(-)
woofer terminals from the ESU
System terminals, avoiding possible problems be-
tween amplifiers due to common connections.
For connections using
two
amplifiers, a means
must
be
provided for splitting the signal from the preampli-
fiertoeachamplifier. Somepreampsprovide multiple
outlets; others require the use a "Y" adapter. Consult
your dealer for available options.
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