nd/ox
Agora
B
MKII
Af;ora B
Slim
Line
Operating
Instructions
IMPORTANT
WARRANry
PACKING MATERIAL
Protect
your
speakers
from exposure to excessive
heat and
mois-
ture. Carefully
read Section
1
(setup)
before
you
installthe speak-
ers.
The
powered
speaker
should be connected
to the
(pre-)amplifier
before
it is connected
to the AC outlet.
It
is important
to follow
the instruction
in
Section
'11
(AC power
connection).
Please
note that
the warranty
is only valid
in
the
country
in which
the equipment
has
been
sold.
We also would
like to draw
your
attention
to the
fact that
the warranty becomes
null and
void
if
unauthorized
modifications
or unprofessional
repairs are
made.
Warranty
cards for equipment
sold
in
Swiüerland
or Austria
are
issued directly
by the authorized
dealer.
For equipment sold
in
France
you
will
find the
warranty
card
inside the
packing.
This
card must be
completed
and signed by
your
authorized
REVOX
dealer.
ln the Federal
Republic of Germanv,
in the USA,
and
in
most other countries
a special
warranty card supplied
with
the
equipment
This card
is
located
either
inside the
packing
or
in
a
plastic pouch
attached
to the outside of the
packing.
lf this card
is
missing
please
consult
your
REVOX dealer or
your
national
REVOX distributor.
Please
retain the original
box for reuse in case
your
equipment
ever
needs to be
transported
The
packing
material has been
especially
designed to
protect your
valuable equipment
from
shock
in
transit.
Vorsicht:
Das Gerät
ist in ausgeschaltetem
Zustand
(STANDBY)
nicht von der
Stromzuführung
getrennt
Attention: Cet
appareil n'est
pas
separe du
r6seau lorsqu'il est ddclench6
(STANDBY).
Warning: This unit
is not
separated
from the
mains supp
y
when swltched
o1f
(STANDBY).
Attenzione: Ouesto apparecchio
non ö separato dal
a rete
quando
interruttore
Ö spento
(STANDBY)
Precauciön: Este
aparato no estä separado
de la
red
cuando
estä apagado
(SfANDBY).
Waarschuwing: ln uitgeschakelde
toestand
(STANDBY)
s het apparaat
nlet
gesche
den van de
netspanning.
Advarsel:
Apparaten er ogsaa
hvis lukket
(STANDBY)
undet strom
Huomio:
Huo matta slltä, että
virta
on
katkaistu
laitteesta
(STANDBY).
sitä
ei
ole
eristetty sähköstä.
Forsildig: Selvom
strommen
ikke
er
pa
i apparatet
(SIANDBY).
sa
er
det
ikke
skilt
fra strom
Varning: Oaktat
om strömmen är avbruten
i apparaten
(STANDBY),
sa är den ända
kopplad med ström.
Table of contents
sEcTtoN 1
Page
2
G enera L
Content
of
packing
3
3
3
AC
power
connection
Setup
sEcTroN
2
Synopt
cal sketch
Pilot lamps
Connection
to the
preamplif
er or amplifier
sEcTtoN 3
Connection versions
sEcTtoN
4
Technical data
sEcTroN 5
Block
diagram
sEcroN
1
General
ln conventional
passive
speakers
the
frequency
range is allocated
to the
indivi-
dua
I
speaker
chässis by
passive
frlters implemented
with coils
and capacitors
The ohmic
resistance
inherent
to these coils
as well as
the resistance
of
the
connecting
cable
beh/,/een
the
amplifier and the speaker
have a detrimental
influence
ön the damptng
factol i. e.
it
becomes
much more
difflcult
for the
amplifier
to control
the speaker
diaphragm
movement.
ln
powered
speakersthe
frequency
spectrum
is split before
the.power
amplifi
erä.
ln this
case the
crossover
networks
can be
implemented
with
low loss
components
(amplifiers).
One
power
amplifier
each is assigned
to
the bass,
midänqe,
and treble.
These
power
amplifiers
are
installed in a speaker
hous-
lnq
(heäce
the
desiqnation
"powered").
This
arrangement
results
in short,
loürlloss
connectioni
bet,veen
the
power
amplifiers and
the corresponding
speaker
chassis.
The damplng
factor
is known and
controllable
Cone
type
speakers
generally have an asymmetrical
deflectlon
of
the dia-
phraqm.
thris
means that
the
travel of the
moving coil
is not identica
I in the
d i-
iectiön
toward
the maqnet
and
away from the
magnet. The
diaphragm
ofthe
bass soeakers oerform
the
qreatest
deflection.
This
is the
reason why
this
asvmmetrv
is
most
perceiväble
in
bass
speakers.
ln the
powered
speaker
AGORA
B MKll/AGORA
B SLIM
LINE, the only
feasible solution
to this
prob
lem has been
chosen,
the so-called
push-pull
operation
of a
pair
of identical
bass speakers
of which
one
is installed in the
housing in a conventional
man-
ner thö other,
however,
with
the magnet system
facing the
outside.
ln thisway
the
asymmetries
of the speakers
are mutually
compensated.
The diaphragm
movement
of the two
bass speakers
is rigidly
coupled to the
output signal
of
the bass
amplifier
by an
interlocking
control system.
Frequency
response
errors
and high-ordei
sympathetic
reaonance of the
housing,
which occur
in
passive
and
powered
systems
without interlocking
control, are
now a thing
of
the
past.
The
input sensitivity
of the
AGORA B lvKll/AGORA
B SLIM
LINE
powered
soeakärs can be
switch selected
so that
it can be matched
either to
a tuner/
preamplifier
combination
(e. g.
REVOX B286) or
a tuner/power
amplifier
c^om
bination
(e. g.
REVOX
8285). In
various
power
amplifiers
(e. g.
REVOX
8250)
and receiveis
it is
possible
to open
the
path
betu/een the
preamplifier
and the
oower
amolifier.
ln this case
the AGORA
B I\lKll/AGORA
B
SLIM
LINE
can be
bonnected
to the
preamplifier
output of the correspond
ing unit. Direct
connec-
tion
to source
units with
variable output
level
(e.9.
REVOX
CD 8226)
is also
feasible.
Thepowered
speakerAGORA
B MKll/AGORA
B
SLIM
LINE is. of course.
also
compatrble
with
REVOX equipment
of older series.
Your dealer
will
gladly
advise
you.
Protective
circuits
prevent
overheating of the
built-in
power
amplifiers
and
protect
the midrange
speaker
and the Nveeter
from overloads.
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