WARNING: Always unplugthe AC (POWER) input
and audiofeeds beforeaccessingthe insideof the
Interface.
1)
Evenafter
the
power isremoved, a highvoltage charge
remains onthe array for
at
least many
hours.
2)
To dischargethe array, remove
the
REDcodedarraywire
andtouch its
tip
(while holdingthewire's insulation, NOT
the metalplug)
to
any otherarraywireconnection. Unless
the speakerhasbeende
-
energizedforsometime,expect
to
see a spark andheara snap fromthe speaker.
3)
Thespeaker
will
now
be
safelydischarged, anddisassem-
bly
may
procedd.
Audio
Input
The red/black input terminals are standard,
3/4"
spacing,
bananajacks. They may acceptsingleordualbananaplugs,
spade lugs, pinplugs, or barewires.
There are four
possible
ways
to
connect the loudspeaker
to
the system amplifier(s). For all connections,
be
sure
to
observepolarity markingsfor bothchannels:
Red
(+)
to
Red
(+),
andBlack
(
-
)
to
Black
(
-
).
AllAcoustat Loudspekaers
are
designed
to
preserveabsolute phaseintegrity: i.e. when
the
redinputterminalispositivewith respect
to
the
blacktermi
-
nal,the electrostat's diaphragmwillmoveforward.
Standard
Connection:
See FigureFour. This configuration
allowsasinglestereo amplifier to power boththe electrostatic
array andthewoofer. To implement,connectthe amplifier's
output
to
the 'ESUSYSTEM INPUT
"
terminals, and set
the
switch
to
'SINGLE AMP
"
. No connection
is
made
lo
the
"
WOOFER INPUTterminals.
Bi
-
Wire
Connection:
See Figure Five. This configuration
allowsasinglestero amplifier topower both the electrostatic
array andthe woofer. butallowsuse of
two
separatecables
to
feedeach section. To implement, connect the amplifier's
7
output
to
the
"
ESUSYSTEMINPUT
"
terminalsusing
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-AmpConnection: See FigureSix.Thisconfigura-
tionallowsone stereo amplifier
to
powerthe electro
-
static array, and a
second
stereo amplifier
to
power
the woofer. To implement, connect one amplifier's
output
to
the
"
ESLSYSTEMINPUTterminals, and
connectthe secondamplifier'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 havesimilar power ratings, and
must
have identicalgain (sensitivity).
Alternate Bi-Amp Connection:
See Figure Seven.
Thisconfigurationallowsonestereoamplifiertopower
the
left
speaker, and a second stereo amplifier
to
powerthe rightspeaker. Theadvantage
of
thissetup
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
"
. Repeatthe processforthe rightchannel. Set
the switch
to
BI-AMP/BI-WIRE" positiin. The
two
amplifiersMUSTbe identicalfor this configuration.
Note that the BI-AMP/BI-WIREswitch disconnects
both
(+)
and
(-)
woofer terminals from the ESU
System terminals, avoiding possible problems be
-
tweenamplifiersdue
to
commonconnections.
Forconnectionsusing
two
amplifiers, a means
must
be
providedfor splittingthe signalfromthepreampli-
fiertoeachamplifier.Somepreampsprovidemultiple
outlets;othersrequirethe usea
"Y"
adapter. Consult
your dealerfor availableoptions.
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