Subwoofer channel controls
c:::::J
CD
LOW
PASS CROSSOVER
Use this control
to
set
the
highest
frequency which will pass through the
Subwoofer
Channel
of
your system.
@
BASS
BOOST
FREQUENCY
SELECTOR
@
BASS
BOOST
LEVEL
SELECTOR
These
two
controls are used together
to
help you fine tune the bass boost added
to
the Subwoofer Channel signal. The
Frequency Selector is used to identify
the center frequency for the boost
(Le.,
where the Bass Boost effect will be most
pronounced). The Boost Level is used
to
set
how
much the level is increased
around that frequency,
up
to
+12dB.
EC20B
User's Manual·
page
6
c:::::J
CD
OUTPUT
LEVEL
CONTROL
This control allows you
to
independently set the
output level
of
the channel.
@)
PHASE
SELECTOR
Use this switch
to
select the
output
phase
of
the
Subwoofer channel
to
provide the best time
alignment and stereo imaging
for
your
system.
@)
SUBWOOFER
CHANNEL
OUTPUT
MODE
If your system only includes one subwoofer, you
will probably
want
this
to
receive a mono signal
derived from the
UR
input signal. In this case,
place
the
switch
in
the MONO position. For dual
subwoofer systems, the choice
of
mono or stereo
subwoofers is a matter of personal taste, although
the directionality
of
low frequency signals is difficult
for the human ear
to
detect,
so
the difference
between the switch settings may be inaudible.
Electrical and
remote
level controller connections
Using 16GA mininum wire connect the EC20B as follows:
a.
Connect the shortest possible wire
to
a clean, unpainted chassis ground point.
Connect this wire
to
the Ground connection
of
the EC20B.
b.
Connect the +12V terminal directly
to
the vehicle battery, using a distribution block
near the crossover,
if
desired. Be sure
to
install a
3A
inline fuse within 18 inches
of
the
1
battery terminal.
1
c. Connect the Remote terminal
of
the EC20B to the remote turn on lead from your
head unit.
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FREQUENCY
FRONTIN a
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.
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I
40
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~oo
OUT IN
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HIGH
PASS
CROSSOVER:
~",;idB
lEVEL
[
[]I
FUSE3A
SUe
FRONT
~
01.""T
SUBWOOF
••
CRoSSOV£MS["
MAA
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Ill""
r""'" R ®R
DliMoI)£
R
SUB IN fi<£QUENCf ::.;;T
~~~
.,~
I'i'iiQ
BAss
SoosT
;m;:l
® L
®R
~~p~n~t~u~
to REMOTE TURN-ON
terminal
of
head unit
o
Cl Cl
3A
FUSE IBattery I
[][]
Remote
Subwoofer Level Control
c::::::J c::::::J
)
,
Input
and output connections
Input and output connections vary depending on the system application. Examples
are shown in system diagrams on the pages which follow in this manual. Always use
high quality RCA cables for input and output connections.
EC20B
User's Manual - page 7
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