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Alpine 3672 - Output Connectors and Level Controls; Mode and Phase Selectors; Subwoofer Output Settings

Alpine 3672
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3672
|
oO
.
CH
3/4
INPUT
CONNECTORS:
When
using
a
head
unit
with
separate
front
and
rear
pre-amp
outputs,
connect
the
head
unit’s
rear
output
con-
nectors
to
the
CH
3/4
input
terminals
of
the
3672
(make
sure
that
the
Input
selector
is
in
the
2-input
mode).
If
your
head
unit
features
one
pre-out
only,
you
must
use
the
CH
3/4
input
of
the
3672.
The
CH
1/2
input
will
not
be’opera-
tional
in
the
1-input
mode.
In
this
case,
you
will
have
to
switch
the
Input
Selector
(page
7,
item
24)
to
the
1-input
mode.
SUBWOOFER
OUTPUT
CONNECTOR:
Connect
to
the
subwoofer
amplifier
input
terminals.
CH
3/4
LOW
OUTPUT
CONNECTOR:
Connect
to
the
rear
mid-bass
(3-WAY
or
2-WAY
(1)
output
modes)
or
midrange
(2-WAY
(2)
output
mode)
amplifier
input
terminals.
CH
3/4
MID
OUTPUT
CONNECTOR:
Connect
to
the
rear
midrange
(3-WAY
output
mode)
or
midrange/tweeter
satellite
(2-WAY
(1)
output
mode)
ampli-
fier
input
terminals.
.
CH
3/4
HIGH
OUTPUT
CONNECTOR:
Connect
to
the
rear
tweeter
(3-WAY
or
2-WAY
(2)
output
modes)
amplifier
input
terminals.
This
output
is
not
used
in
2-WAY
(1)
output
mode.
.
CH
1/2
LOW
OUTPUT
CONNECTOR:
Connect
to
the
front
midrange/tweeier
satellite
(1-WAY
~
output
mode),
or
the
front
midrange
driver
(2-WAY
output
mode)
amplifier
input
terminals.
40.
CH
1/2
HIGH
OUTPUT
CONNECTOR:
Connect
to
front
tweeter
(2-WAY
output
mode
only)
ampli-
fier
input
terminals.
|
1-1
11.
OUTPUT
LEVEL
CONTROLS:
Relative
output
levels
of
all
the
outputs
of
the
3672
can
be
adjusted
independently
using
these
controls.
This
facili-
tates
changes
to
the
actual
output
of
each
amplifier
to
compensate
for
different
speaker
efficiencies
and
amplifier
sensitivities.
It
can
also
alter
or
improve
the
total
system
frequency
response
by
raising
or
reducing
the
output
of
some
drivers.
12.
OUTPUT
PHASE
SWITCHES:
Sets
the
phase
of
the
Subwoofer,
CH
1/2
Low,
CH
1/2
High,
CH
3/4
Mid
and
CH
3/4
High
outputs
to
0°
(in
phase)
or
180°
(inverted)
independently
from
the
other
outputs.
This
feature
can
be
used
to
compensate
for
acoustical
response
irregularities
or
standing
waves
and
to
improve
or
correct
imaging.
13.
CH
1/2
LOW/HIGH
CROSSOVER
FREQUENCY
ADJUSTMENT
CONTROL:
This.
continuously
variable
control
sets
the
crossover
fre-
quency
between
the
Low
and
High
bands
of
CH
1/2.
Itcan
be
adjusted
from
3k
to
10.kHz
and
is
only
activated
in
the
2-WAY
mode.
14.
CH
1/2
OUTPUT
MODE
SELECTOR
SWITCH:
Selects
2-WAY
(separate
midrange
and
tweeter)
or
1-WAY
(combined
midrange/tweeter
satellite)
operation
for
CH
1/2.
15.
CH
1/2
LOW
OUTPUT
LOWER
CUTOFF
FREQUENCY
ADJUSTMENT
CONTROL:
This
continuously
variable
control
adjusts
the
high-pass
corner
frequency
of
the
CH
1/2:Low
output.
This
control
is
completely
independent
from
the
Subwoofer
and
the
CH
3/4
Low
output.
It
can
be
adjusted
from
50
to
800
Hz
in
both
2-WAY
and
1-WAY
output
modes.
16.
CH
3/4
MID/HIGH
CROSSOVER
FREQUENCY
ADJUSTMENT
CONTROL:
This
continuously
variable
contro!
adjusts
the
crossover
frequency
between
the
Mid
and
High
outputs
of
CH
3/4.
It
is
adjustable
from
3k
to
10
kHz. This
control
is
used
in
3-WAY
and
2-WAY
(2)
output
modes
only.
17.
CH
3/4
LOW/MID
CROSSOVER
FREQUENCY
ADJUSTMENT
CONTROL:
This
continuously
variable
control
is
used
for
setting
the
_
crossover
frequency
between
the
Low
and
Mid
outputs
of
CH
3/4,
Itis
adjustable
from
200
Hz
to
2kHz.
This
control
is
used
in
3-WAY
and
2-WAY
(1)
output
modes
only.
18.
CH
3/4
OUTPUT
MODE
SELECTOR
SWITCH:
Selects.one.of
the
3
operation
modes
available
for
CH
3/4.
19.
CH
3/4
LOW
OUTPUT
LOWER
CUTOFF
FREQUENCY
ADJUSTMENT
CONTROL:
-
This
continuously
variable
control
adjusts
the
high-pass
corner
frequency
of
the
CH
3/4
Low
output.
This
control
is
completely
independent
from
the
Subwoofer
and
the
CH
1/2
Low
output.
It
can
be
adjusted
from
10
to
120
Hz.
This
control
is
used
in
all
three
output
modes.
20.
SUBWOOFER
OUTPUT
STEREO/MONO
SWITCH:
Selects
Stereo
or
Mono
output
for
the
sub-bass
frequen-
cies.
The
Mono mode
allows
the
use
of
one
subwoofer
along
with
a
single
channel
amplifier.
It
must
also
be
used
when
two
or
more
subwoofers
are
mounted
in
a
common
enclo-
sure
or
baffle
board.
fo
The
Stereo
mode
can
provide
better
separation
when
independent
and
isolated
enclosure
are
used
for
each
subwoofer.

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