BOSSCO RCL-10 User manual

UBOsSS
RCL-I0
COMPRESSOR
mui
Owner’s
Manua

OUBOSS
RCL-10
COMPRESSOR
LIMITER
INSTRUCTIONS
® Please read the instructions carefully.
FEATURES
The Dynamics Processor RCL-10 has Compressor,
Limiter, Expander, and more, Noise Gate functions.
Adopting a high quality VCA, the RCL-10 allows
high SN ratio, low harmonic distortion and little
tone quality deterioration. Each control can be used
to present various effects. The Key In Jack allows
to change the response depending on the type of
input signal, and the Stereo Link Jack allows con-
nection of two sets of RCL-10's for synchronization.
The RCL-10 is one of the Micro Studio Series, and
by using the Rack Mount Adaptor loptiona!), any
two of the Series can be mounted on the standard
19" rack (EIA-1U).

FUNCTIONS
The RCL-10 has four functions; Compressor, Limiter,
Expander and Noise Gate.
«Compressor/Limiter
Both are the functions of compressing the input
signal, but different in the threshold level (*1) and
ratio (*2) settings. Compressor is used to compress
the signal of a wide dynamic range and even the
level. Limiter is a stronger function that is used to
protect a unit from excessive input or to reduce
sound distrotion.
«Expander
This is the function of widening the dynamic range
of input signal. Use this to make a dynamic sound.
Threshold Level (*1)
This is the level at which the compressor or limiter
Starts the compressing procedure. The signal
lower than the threshold level will pass through
without being compressed.
Ratio (*2)
This is the compression ratio to the input level. For
instance, when a 10 dB signal is fed in and 5dB
level signal is sent out, the ratio will be 10dB : 5dB
=2:1.
‘Threshold Level and Ratio:
(wugp) 120a7 INdiInNO
Ratio =a: b
Input Level (aBm)

Attack Time
This is the time needed for the ratio of the signal
over the threshold level to reach the set ratio.
Release Time
This is the time required for the signal that has
become under the threshold level (= the signal that
stops compressing} to reach the normal level.
‘Attack Time and Release Time
_---- Input Level
(Ugp) j8Adq
aS
A
a
ee
Threshold
Level
Output Level :
|
Attack Time | |
x |
Release Time
Time
@ Control Setting Examples
[Trees]
tie reer] =a
‘Noise Gater
Attack Time | Release Time
Fairly Short) Fairly Short
This
serves
to
mute
the
signal
that
is
lower
than
the
set
level
(threshold
level).
Therefore,
it
can
be
effectively
used
for
removing
noise
when
nothing
is
being
played,
or
reducing
the
crosstalk
when
several
microphones
are
used.
Threshold Level
The
signal
lower
than
this
level
will
be
muted.
Decay Time
This
is
the
time
spent
for
the
muting.
Fairly Short;
|
1
i
}
i

PANEL DESCRIPTIONS
<FRONT PANEL>
@ EFFECT INDICATOR
This lights up when the effect is turned on. So
you can easily see whether the unit is in the
Normal or Effect mode.
EFFECT SWITCH
Each time this switch is pushed, the unit is
alternately turned to the Effect and Normal
modes.
OVERLOAD INDICATOR
When the signal fed into the unit is too high,
this indicator lights up. If it lights up too often,
lower the input level of the connected unit, or
set the Level Switch @ to the “-10dBm”"
position.
GAIN REDUCTION INDICATOR
In the compressor or limiter mode, this lights
up when the unit is operating. So, this can be an
aid for setting the threshold level. In the expander
mode, this lights up when the unit is not operating,
and goes out when operating.
THRESHOLD
This decides the threshold level (the level where
the compressor starts working). Rotating it
clockwise will increase the level, making the
effect of the compressor/limiter weaker.
e
C8
°
*
In
Expander
mode
(when
the
ratio
is
1:
1.5
to
1:1),
this
knob
has
no
effect.
RATIO
This
adjusts
the
compression
ratio.
When
it
is
rotated
clockwise
from
the
center
position
(1:1
to
x:
1),
the
RCL-10
functions
as
compressor’
limiter.
And
when
rotated
counterclockwise
(1:1
to
1:
1.5),
it
functions
as an
expander.
At
its
Center
position,
the
compression
ratio
is
1:1,
therefore
none
of
the
compressor,
limiter
or
expander
works.
ATTACK
This
adjusts
the
attack
time.
Rotating
this
clock-
wise
will
make
the
attack
time
longer.
RELEASE
This
adjusts
the
release
time.
Rotating
it
clock-
wise
will
make
the
release
time
longer.
THRESHOLD
This
decides
the
threshold
level
of
the
noise
gate.
Rotating
the
knob
clockwise
will
increase
the
level.
At
its
fully
counterclockwise
position,
the
noise
gate
function
is
not
obtained
at
all.
DECAY
Dacay
Time
is
the
time
needed
for
the
input
signal
under
the
set
threshold
level
to
finally
fade
out.
Rotating
the
knob
clockwise
will
make
a
longer
decay
time.
OUTPUT LEVEL
This
adjusts
the
output
level
of
the
effect
signal.
When
the
ratio
is
1:1,
setting
this
knob
to
the
center
position
will
make
the
output
and
input
levels
equal.

@ POWER INDICATOR
This
lights
up
when
the
unit
is
turned
on.
@® POWER SWITCH
Push
this
switch
to
turn
the
unit
on,
and
push
it
again to turn off.
<REAR PANEL>
@ INPUT JACKS
Connect
a
musical
instrument
or
audio
equip-
ment to this jack.
*
The
standard
phone
and
pin
jacks
do
not
work at a time. If both are simultaneously
used, the standard phone jack will have priority.
@ LEVEL SWITCH
Set
this
knob
to
an
appropriate
position
depend-
ing
on
the
output
level
of
the
connected
device.
“—20dBm” position may be selected for a
usual electric musical instrument (such as an
electric guitar).
@ OUTPUT JACKS
Connect
a
guitar
amplifier
or
audio
equipment,
etc.
Both
pin
and
standard
phone
jacks
can
be
simultaneously used.
@ KEY IN JACK
This
Is
an
input
jack
that
can
be
used
to
change
the
response
of
each
function
of
the
RCL-10
depending
on
the
externa!
audio
signal
fed
into
{usually
the
input
signal
or
the
processed
input
signal).
EFFECT REMOTE JACK
Connect
the
footswitch
FS-1
(optional)
to
this
jack,
and
Effect/Normal
mode
can
be
selected
without reaching out your hand.
*
The
above
function
cannot
be
obtained
if
the
Effect
Switch
on
the
front
panel
is
turned
off.
When
two
RCL-10's
are
setup,
connect
the
Remote
jacks
of
the
two
units,
and
Effect’
Normal
of
the
both
units
can
be
controlled
by
either
of
them.
STEREO
LINK
JACK
(COMP)
By
connecting
two
sets
of
the
RCL-10
through
these
Stereo
Link
Jacks,
they
will
have
the
Same
responses
of
the
compressors,
limiters
and
expanders.
(See
page
11),
STEREO
LINK
JACK
(NOISE
GATE)
By
connecting
two
sets
of
the
RCL-10
through
these
Stereo
Link
Jacks,
they
will
have
the
same
responses
of
the
noise
gate.
(See
page
12.)
AC ADAPTOR JACKS
This
is
to
connect
the
AC
Adaptor
(BOSS
PSA-
120,
220
or
240).
When
using
this
unit
to
supply
power
to
other
BOSS
Micro
Studio
Series,
connect
the
supplied
DC
cord
to
“OUT”.
Otherwise
use
the
“IN”
jack,
*
When
only
one
AC
adaptor
is
used
for
supply-
ing
power
to
more
than
one
unit,
please
be
sure
that
the
total
amount
of
the
current
draw
does
not
exceed
200mA.
(The
current
draw
is
Shown
on
the
rear
panel
of
each
unit.)

CONNECTIONS
AC Adaptor BOSS
PSA-120, 220 or 240.
(Optional)
Video Cassette Recoce’
Gutar _
Lo
perme He ane CO Player
Elecine Keyboard tre
ee |
To AC &
Adaptor Jack
To other
Micro Studio
Series
Ves Disc Player
Footswitch
FS-1
(Optional)
To another RCL-10
(in stereo setup)
trod
Pre Mar dmc ter
Gatar Amo he
|
Tape Recade
“Example Settings”
(page 9, 10 and 13)
All the BOSS Micro
Studio Series show
the current draw here.
* Featuring Low Noise, RCL-10 can also have place in
AV system for creating special sound effect.
OPERATION
*
Set the Ratio Knob to 1:1 (center) position, the
Threshold of Noise Gate to MIN, the Output
Level to "0dB”, and the Effect Switch to the
OFF position.
Switch the RCL-10 on. (Make sure that the
Power Indicator lights up.)
Set the Level Switch to either position
depending on the type of the device you
use.
Changing the position of the Level
Switch will not affect the volume.
Push the Effect Switch to turn the unit to the
effect mode.
When you connect a footswitch to the Effect
Remote Jack, you can turn the unit to the effect
or normal mode just by depressing the pedal.
If the Effect Switch on the front panel has been
turned off, above remote control function cannot
be obtained.
Try moving each Control to see how it affects
the tone color, then make your own sounds.

Example
Settings
(1)
RCL-10
as
a
Limiter
Set up the RCL-10 before a tape recorder, and clear
sound without distortion can be recorded.
Set
up
the
RCL-10
before
an
amplifier,
and
the
speaker
can
be
protected
from
an
excessive
strain
by
overloading.
RCL-10 as a Compressor for vocal
Vocal has a very wide dynamic range, so it is usually
difficult to record in low distortion and good SN ratio.
In the setting as shown right, clear sound can be
recorded and volume will increase, therefore the
vocal will come forward.
RCL-10 as a Compressor for guitar or bass
guitar
By using th RCL-10 for guitar cutting, accurate and
clear sound can be obtained. Also, by using it for
bass chopper, the peak will be suppressed, allowing
better band ensemble.
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1:6: om
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COMP
Lert
Eh
SE
PENDER
MOISE
Gate
ore
“BOSS
=:
attacx RELEASE
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RCL-10 as an Expander
When recording drum voices, you may use the
RCL-10 for tom. The recorded sound will be extremely
dynamic.
RCL-10 as a Noise Gate
In a setup using many effect units, noise will increase
that much. Using the RCL-10 as a Noise Gate at the
end of the group of the effect units will remove the q 1 @)
undesired noise heard when nothing is being played. Ee
RCL-10 as a signal gate
When recording drum voices, use the RCL-10 fora en
bass drum and cut the unnecessary release time,
and the recorded sound will be tight. Also by using it , { LD
for a microphone, the crosstalk among the micro- EPPREL, Tmarswoid “nano Warmer” “Reueast fo
phones can be reduced, and clear sound will be
obtained.

Example Settings (2)
The RCL-10 features a Key In Jack and Stereo Link
Jacks, allowing wide variety of applications.
RCL-10 as a gate echo
elas ieaten vimana You can make gate echo sound which is often used
pag
for
a
snare
drum.
Snare Drum Output
Output
Audio Signal
Distributer
Reverb Unit
Rhythm Machine
(BOSS J-5, etc) Output
(Roland TR-909 TR-707 etc)
To
Key
In
Jack
To
Input
Jack
| Output To Mixer, etc )

10
RCL-10 as a de-essor for vocal
To make clearer vocal sound, you may boost the
treble by using equalizer. This, however, inevitably
emphasizes sibilant sounds. To resolve this problem,
use the limiter on the band of 6kHz which contains
sibilant sounds.
Input
Preamplifier, Mixer
(BOSS BX-400 etc)
Audio Signal
Distributer (BOSS J-5 etc)
0 t
Graphic
Equalizer
utpu
(BOSS Micro Studio Series RGE-10)
Output
To Key In Jack To Input Jack
To Mixer, etc

RCL-10 as a Limiter in stereo
mae ao By connecting two sets of the RCL-10 through the
ce TE ae pe | cp. | ik. Pe Stereo Link Jacks (COMP), they will have the same
|
AD:
@
ND?
PAD:
MDA!
responses
of
the
Compressors,
Limiters
and
Tee Seca teens ou Expanders, therefore, even in stereo use, natural
limiting effect can be obtained.
ey Near od
AFFUCT Tene seco
2m oo
*
Normally,
set
these
two
RCL-10’s
exactly
the
same.
If
they
are
set
differently,
the
one
with
smaller
amount
of
compression
will
synchronize
to
the
other
one.
Stereo Outputs
Mi O0e
Tape Recorder
(Left
Channel)
To
Input
Jack
(Right
Channel)
To
Input
Jack
Output
Connect two Stereo
Link Jacks «COMP,
L To Tape
Recorder, etc
1]

12
RCL-10 as a Noise Gate in stereo
Lately,
more
stereo-out
effect
units
have
been
on
the
market,
so
you
may
sometimes
want
to
use
the
Noise
Gate
in
stereo.
If
so,
connect
two
sets
of
the
RCL-10's
through
the
Stereo
Links
(NOISE
GATE),
and
the
responses
of
these
two
units
will
be
the
same.
In
this
way,
noise
can
be
removed
without
spoiling
natural
impression.
* Normally set these two RCL-10’s exactly the
same. If they are set differently, the one with smaller
input level will synchronize to the other one.
Electric
Guitar
{Left
Channel)
To
Input
Jack
Connect two Stereo Link
Jacks «NOISE GATE)
Guitar Amplifier
Guitar Amplifier
(L)
(R)

RCL-10 as an Expander for distortion sound
Example Settings
Expressing
a
delicate
picking
nuance
in
guitar's
distortion
sound
is
not
an
easy
job.
Using
the
RCL-10
as
an
Expander,
however,
a
subtle
nuance
of
picking
=,
can
be
expressed,
reducing
noise
at
a
time.
Also,
by
setting
the
release
time
fairly
long,
you
can
control
the
level
of
the
distortion
sound
with
the
volume
control
of
the
guitar.
(BOSS J-5, etc)
Input | Audio Signal
Distributer
Output
Output
Electric Guitar
To Key In Jack To Input Jack
Distortion Unit
(BOSS HM-2, DS-1, DF-2, etc)
13

14
IMPORTANT NOTES
@ Be sure to use the AC Adaptor BOSS PSA-120, 220 or
240 depending on the line voitage system in your country.
@ When you use only an AC adaptor for suppiying power
to more than one unit, please be sure that the total current
draw does not exceed 200mA. (The current draw of each
unit is shown on its rear panel.)
@® When the unit is not to be used for a long period of
time, disconnect the AC adaptor from the wail socket.
@® Avoid using the unit in extreme heat or humidity or
where it may be affected by dust
@ Please never remove the cabinet from the body of the
unit.
@ When you use only Micro Studio Series without optio-
nal
Rack
Mount
Adaptor
""RAD-10"’,
please
attatch
the
rubber feet. Refer to figure.
AC
ADAPTOR
BOSS
PSA-120,
220
OR
240
Be
sure
to
use
the
optional
BOSS
PSA
series.
Using
any
other
adaptor
will
cause
trouble.
RACK MOUNT INSTALLATION
The
RCL-10
is
one
of
the
BOSS
Micro
Studio
Series,
and
by
using
the
Rack
Mount
Adaptor
RAD-10,
any
two
sets
of
the
Series
can
be
mount-
ed
in
a
standard
19”
rack
(EIA-1U).
Remove
the
rubber
feet
(x4)
from.the
units,
then
attatch
the
units
to
the
Rack
Mount
Adaptor
RAD-10,
then
mount
the
whole
set
in
the
rack.

SPECIFICATIONS
Input Level/Input impedance: -—20dBm/1MQ,
—10dBm’47kQ
Output Level/Output Impedance: —20dBm/2kN,
—10dBm.2kN
Output Load Impedance: over 10kN +0
Frequency Response: 10Hz to 25kHz (_ 3B)
Residual Noise: under 95dBm
(INF-A, Level Switch set to ~20dBm)
Compressor/Limiter/Expander
@ Threshold: -—40dBm to 0dBm
(Level Switch set to -20dBm)
© Ratio: 1:1.5to=x:1
@ Attack: 0.2ms to 50ms
e Release: 50ms to 2s
Noise Gate
@ Threshold: -xto-10dBm
(Level Switch set to -20dBm)
@ Decay: 2ms to 5s
Output Gain: -~=x to+14dB
THD: under 0.03%
Switches: Power
Effect
Level (—20dBm, -10d8m)
Jacks: Input (Standard Phone, Pin)
Output (Standard Phone, Pin)
Effect Remote (On/Off)
Key In
Stereo Link «COMP»
Stereo Link «(NOISE GATE)
AC Adaptor (In, Out)
Indicators:
Power:
Current Draw:
Dimensions:
Weight:
Accessory:
OPTIONS:
Power
Effect
Overload
Gain Reduction
9V DC (BOSS PSA-120, 220 or 240)
60mA
218(W) x 44(H) x 169(D) mm
8-9/16"(W) x 1-3/4"(H) x 6-11/16''(D)
900¢/2 Ib
DC Cord (0.5m)
AC Adaptor BOSS PSA-120, 220 or 240
Rack Mount Adaptor RAD-10
Footswitch FS-1
Micro System Rack BMR-5
@ Specifications are subject to change without notice.
BOSS Micro Studio Series
RCL-10
RBF-10
RGE-10
RPH-10
RDD-10
Compressor ‘Limiter
Flanger
Graphic Equalizer
Phaser
Digital Delay
15

Notes

UBOSS
Products of Roland
RCL-10
Instructions
Printed
in
Japan
’85
Sep.C.3
Jd
Ol-)