Planet Audio EC20B User Manual
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EC20B
3-Way Electronic Crossover
with Remote Subwoofer Level Control
MANUAL
page
USER'S
CONTENTS
2 How this crossover is used
Product architecture
2
Congratulations
purchase
Crossover.
It has been designed, engineered
and manufactured
the highest level
and quality, and
years
Thank you for making
Planet Audio your choice
audio entertainment!
of a Planet
of
listening pleasure.
on
your
Audio
to
bring you
of
performance
will afford you
for
car
2
Important features
Installation
3
3
Mounting the equalizer
Turning on the power
3
4 Input, output, remote and
power connections
Front and rear channel
5
controls
6 Subwoofer channel controls
Electrical and remote level
7
8
12
12
controller connections
System diagrams
Troubleshooting
Specifications
EC20B User's Manual page 1
How
this
crossover
The Planet Audio EC20B 3-way electronic crossover
processor that allows you
ize
the
low
source (e.g., a car radio),
signal can
or
amplifiers as a part
3-way mobile audio system.
It is intended
system which includes amplifiers
the signal path AFTER
and provides Front, Rear and Subwoofer
connectors.
LOW LEVEL outputs via RCA
Product
This crossover accepts the
(RCA type) input signal from the following types
a)
2-channel (UR) only
b) Front (UR) and Rear
c)
Front (UR), Rear (UR) and Subwoofer
channel (mono)
d)
Front
(UR),
channel (UR)
By making proper switch settings, any
of
these types
is
a high-fidelity signal
level
output
be
applied to an amplifier
for
use
architecture
of
head unit outputs:
Rear (UR) and Subwoofer
of
head unit outputs can .
is
to
custom-
of
your
so
that the
of a 2-way
in
a car audio
the
crossover,
low
used
input
or
in
level
be utilized as a signal source from which
the
EC20B can derive a few different
kinds
of
system configurations. Exam-
ples
of
these are shown
this manual.
in
diagrams in
Important
The EC20B incorporates several key features which greatly expand the ways
which it can be used in a mobile audio
system.
Parallel
The EC20B is optimized
which provide outputs
Rear (UR) and Subwoofer (UR) channels.
But
what if your head unit only provides
a single pair
By setting the Parallel Input selector control
to
OUT,
(UR) EC20B inputs will also be routed
the Rear channel. This eliminates the need
for external y-adaptors, which can sometimes add noise
can provide custom processing
Rear channel independent
you apply
Front
channel
By providing a way for you
frequency from either a MidS/Highs range
or
a Tweeter range
crossover, we give you the choice
this crossover
example, you can use the Front channel
as a stereo Tweeter channel by setting the
Crossover Frequency
er 800Hz-8kHz range, and Rear channel
can serve as
for a
3-way
create a 4-channel system, with Front and
Rear channels reproducing the
features
input
selection
for
head units
for
Front (UR),
of
stereo (UR) outputs?
the signal applied to the Front
to
the system.
to
the
front.
crossoverlnuftipHer
for
the Front channel
in
different applications. For
Multiplier
the
Mids/Highs channel
stereo system.
Now
to
of
the settings
to
select a
to
the high-
Or
you could
MidS/Hlghs.
the
to
in
to
you
use
--
Installation
Before installing your new Planet Audio
crossover, please become familiar with
in
all the information contained
manual.
Choose a mounting location where the
unit will not distract
interfere with
control
Use only the installation parts and
hardware provided with the unit
ensure proper installation. Using other
parts can. cause malfunction and
possible
crossover.
Avoid installing the unit in a location
which
direct sunlight,
sources as heaters
or
with dust, dirt, moisture
vibration.
the
vehicle.
damage
is
subject
where it will be subject
Mounting
The EC20B is designed
securely
vehicle using the screws and washers
provided. Install the unit according
the
to
a flat surface
diagram below.
or
otherwise
the
driver's ability
to
your Planet Audio
to
high temperatures,
hot
air from such
or
exhaust lines,
the
crossover
to
this
to
to
to
contact
or
excessive
be installed
in
your
to
~~
/~
Turning on
Before powering
1.
Carefully
audio connections.
2.
Set
all
positions.
3. Set all switches
appropriate for your installation.
The
EC20B
circuitry which responds
or
OFF
the
system.
This
the
power
up
for
the first time:
check
all electrical and
level controls
has
to
their minimum
to
the
settings
intemai ON/OFF
to
fuming ON
head unit ofyour car audio
requires that your head
unit have a remote tum-on lead
available
head units
With
feature, you never
turning off the power
when you shut
When you are confident
have been made correctly:
1.
turning on the head unit.
2.
unit
the input level control for each channel
to
on
the
rear
panel
(which
·most
have).
this
convenient remote tum-onIoff
have
to
WOn)'
about
to
the equalizer
off
the audio system.
all
connections
Power up your audio system by
Set the volume control on
to
about 3/4 volume, and adjust
just below
the
level
the
of
distortion.
head
EC20B User's
Manual·
page 2
Subwoofer
Many head units also lack a subwoofer
channel output.
the Sub Input control
sub channel controls will
mix
of
Channel and a mix
the
Subwoofer Right
nates
and mixer devices.
input
In
L Front/Rear
the
need
for
mix
option
this situation,
to
to
the Subwoofer Left
of
the
channel
external Y adaptors
by
setting
MIX, the EC20B
be
delivered a
R Front Rear
This elimi-
to
Flat
Spring
washer
washer
of
Further fine tuning
the EC20B and
connected amplifiers may
necessary
If you are unsure about
tune
your
to
obtain satisfactory results.
the
system, please consult with
Planet Audio dealer.
the
the
input levels
EC20B User's
how
controls on
of
the
be
to
fine-
Manual·
page 3
Input, output, remote and
c=:J
power
HIGH PASS
connections
1
CROSSOVER • PowER
lEVEL
Front and
rear
channel controls
1)
(2
2
I'4RAHftIHP!.l'f
3
4r------I-----Id
.
;~IN
®
5
d
l~
®R
--U-u,
)2
:
?:S
:~:~
7S0
~
: :
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cCPlun(?t
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CD
POWER LED
® FRONT AND REAR LlR INPUTS
of
Connect the outputs
to
these connections and be sure
place the Parallel Input selector
position.
see
@)
PARALLEL INPUT SELECTOR
If
RCA inputs, placing this switch in the
OUT position allows the signal source
connected
routed
If
only front outputs are available,
"Paralle/lnput Switch, " below.
your audio source only has one pair
to
the front inputs
to
the rear channel
your head units
in
to
also be
of
the EC20B.
to
the
o SUB INPUT SOURCE SELECTOR
If your audio source lacks a subwoofer
MIX position will apply a mix
rear channel
inputs
EC20B User's Manual - page 4
output, placing this switch
of
to
each
the EC20B sub channel
of
of
the left and
the front and
HIGH
PASS
CROSSOVER
stOPE
6 ladB
+12rl8
MiN-=-'",.w
LEVEL
~~~
U,.L®l
INN
MAX
®R
::~O~~~~~~t:~
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ICDl
IRii<l
BAss
BooST
lMil
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2~
U
1~O
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: : : : : : : : : : : : : :
1~1I~
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® SUBWOOFER CHANNEL INPUT
Connect the subwoofer channel
unit
to
these connectors and place the Sub
in
IN
of
the
Input selector
channel outputs are available, see "Sub Input
Source Source," above.
® +12V, GROUND AND REMOTE
TURN-ON TERMINALS
Use this control
to
be sent
a frequency between 32 Hz and 250Hz.
CD
FUSE CONNECTOR
Use only fuse with 3A rating.
® FRONT AND REAR
® SUBWOOFER
® REMOTE LEVEL CONTROL
CONNECTOR
in
the DIRECT
to
select the highest frequency
to
the subwoofer channel. Choose
UR
pOSition.
UR
OUTPUTS
OUTPUTS
-\
of
your head
If no sub
-0
Be
20B
::::::::::::::::
cCp~n(?thll~
Please note: Since signa/ processing
Channel controls
is
that due to the addition
high
pass crossover setting
800Hz-8kHz range, while the Rear channel high pass crossover is limited
only.
This
CD
HIGH PASS CROSSOVER
Use this control
frequency which will pass through the
Front (or Rear) Channel
® HIGH PASS CROSSOVER
FREQUENCY MULTIPLIER
(Front channel only)
This selector sets the frequency range
for the high pass crossover. Choose the
x1
position for 40Hz-400Hz range,
x20 for 800Hz-8kHz range.
are described here.
allows the Front Channel to
to
set
of
the
of
c=:J
3 way.
;~e.~:.r~~'~:';o:';~v;;::::::::::::::
for
Front
The
only difference between the controls
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MIN
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and
Rear Channels is nearly identical,
a crossover frequency multiplier selector on the Front Channel, the
on
the Front channel can
be
used
@)
lowest
your system.
be
made in either the 40Hz-400Hz range
as
a crossover
CROSSOVER SLOPE
Crossover slope determines how rapidly the dropoff
in
sound
at the frequency selected
octave is equal
frequency. For example, if you set the crossover
to
80Hz and the slope
to
be 18dB lower than at 80Hz.
level,
for
measured
o OUTPUT LEVEL CONTROL
or
This control allows you
output level
of
SUB
M~~U(
only
Front
Front
and
to
either mids
to
the channel.
the 40Hz-400Hz range
in
one-half
to
to
EC20B
for
or
tweeter range.
decibels/octave, occurs
by
the crossover. One
of
the currently selected
18dB, the level at 40Hz
independently set the
User's Manual - page 5
Rear
or
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