Installation
The
4350 has provision for mirror image
mounting
of the high
frequency components to minimize or maximize acoustic
separation between
systems,
as
desired.
The system is shipped
with
all drivers installed in the "left-hand" configuration. When the
two hign frequency units are interchanged
with
their respective
cover
plates on the
right
side ot the battle
panel,
the
system
will
be considered to be in the right-hand' configuration. Three of
the mosl useful acoustical arrangements for a pair of 4350 s are
shown on the next page as examples ol the
several
possibilities,
sucn
as inverted suspension or
multi-unit
arrays,
that exist.
Specific
mounting
instructions are provided under Component
Removal,
starting on page 4 of this manual.
Determination of the preferred configuration for each 4350
should be made only after
careful
audition (and/or measurement)
of the
total
sound reproduction chain
with
each
monitor
placed
in its final room position. If additional treble separation isdesired,
the hign frequency components of the
unit
intenoed for right-hand
placement can be remounted to
increase
their physical distance
Utilizing A Pair 01 4350s
Rigfi-
anc left-hand nomenclature
has
been
adooteo only
as
a
convenient
reference.
Using
:wo
4350s
in
the right-hand configuration
wojld orovioe ihe
sarre
separation
as
a pa
1
' of un is
in
the ongma.
lell-hand coniig jration
from
the other syster Conversely, a reouction of treble
seoaration can be
achieved
by
mounting
the high frequency
transducers
ot the un.t on tne
left
to minimize the acoustic
distance
between
systems.
In many
instances
- wiere consistent
driver spacing is pre'erred. or if the listener
is
fa' enough
from
me
enclosures
so tnat inaividuai sourd sources cannot
DO
perceived
--changing the configuration will not be
necessary
The
high frequency acoustic lens is packed wiln Ihe grilles
m
a
separate
container. It should oe positioned on the enclosure
baffle
panel
over the
mouth
ot the high frequency horn
Mounting
tape on the Da*fle panel and on the appropriate
surfaces
of the
lens
holds the
unit
in position.
Placement
For
optimum
source localization
within
tne stereo image, a pair
of 4350s sho-ld oe arranged so that the listening pos'tion is
centered between tne two
systems
and
no more than 30° off
axis
horizontally
(O'
15° vert
calty;
from
eithe'
unit
If three or more
4350s
are used tne enclosuresshou'd beanged toward ihe
nonzontat center line of tne array to obtain the recommendeo
pattern overlap at tne hstenirg position Note: A minimum
distance
ol 2.5 metres (8
feet)
should be maintained between tne
4350
and the listener
Eye
bo'ts are provided or. tne
bottom
of the enclosure to allow
inverted suspension
The
eye bolls are anchored to a neavy cuty
stee:
brace boitec to tne baffle panel and to tre
bottom
pane* of
the enclosure To
preserve
the
clean
visual
lines ol tne
enclosure,
the
base
may be removed wnen tne eye bolts are
utii
zed
if the
base
is removed
[n<ne
machine
screws
threaded mtoT-nuts). the
screws
should be replaced to maintain the
air-tight
seal
oflhe
acoustic
chamber
Grilles
The
two grille sections of the 4350 are
secured
to tho enclosure
with mojnting
tape and positioned by oowe' pins at the ends of
each
assembly.
The J3L nameplate. ;ocatec on tne upper gm e
section.
is
held in place
with
removable spring ciips An alternate
mounting
position is provided at the opposite end ot tne gnie so
that the namepiate can be moved to avoo interference
with
the
nigh frequency components when they are transferred to the
nght-hand configuration The locating pins on the bac< of the
narrep.ate are arranged symmetrically so that t can be rotated
180° to read ccreciiy wnenever the 4350 is installed m the
inverted position
Connections
Input to the 4350 is
through
spring-ioadod terminals located
on the back of the enclosure Two colo'-coded
sets
of :e'minals
a
f
e
provided anc abe ed tor the low or high frequency sections
oMhesysten
Oose've
consistent polanty between tne two inputs
so
that
botn
red te'mmais
receive
a
positive signal or
both
receive
a
negative
s-gna'
Important: When connecting or disconnecting loudspeakers Irom an
amplifier, the amplifier must be turned oil Making connections while
the amplifier Is operating could seriously damage Ihe loudspeaker
system
and void the warranty.
2
Maximum Separation
Minimum Separation
Moderate Separation
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