BOSSCO SUPER CHORUS CE-300 User manual

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CE-300
OWNER’S
MANUAL
CFrIORUS
SUPER

RADIO AND TELEVISION INTERFERENCE
“Warning — This equipment has been verified to comply with the limits for a Class B computing
device, pursuant to Subpart J, of Part 15, of FCC rules. Operation with non-certified or non-verified
equipment is likely to result in interference to radio and TV reception.”
The equipment described in this manual generates and uses radio-frequency energy. If it is not
installed and used properly, that is, in strict accordance with our instructions, it may cause interference
with radio and television reception.
This equipment has been tested and found to comply with the limits for a Class B computing device
in accordance with the specifications in Subpart J, of Part 15, of FCC Rules. These rules are designed
to provide reasonable protection against such a interference in a residential installation.
However, there is no guarantee that the interference will not occur in a particular installation. If this
equipment does cause interference to radio or television reception, which can be determined by
turning the equipment on and off, the user is encouraged to try to correct the interference by the
following measure:
e Disconnect other devices and their input/output cables one at a time. If the interference stops, it
is caused by either the other device or its |/O cable.
These devices usually require Roland designated shielded |/O cables. For Roland devices, you can
obtain the proper shielded cable from your dealer. For non Roland devices, contact the manufacturer
or dealer for assistance.
lf your equipment does cause interference to radio or television reception, you can try to correct
the interference by using one or more of the following measures:
e Turn the TV or radio antenna until the interference stops.
e Move the equipment to one side or the other of the TV or radio.
e Move the equipment farther away from the TV or radio.
e Plug the equipment into an outlet that is on a different circuit than the TV or radio. (That is, make
certain the equipment and the radio or television set are on circuits controlled by different circuit
breakers or fuses.)
e Consider installing a rooftop television antenna with coaxial cable lead-in between the antenna and
TV.
lf necessary, you should consult your dealer or an experienced radio/television technician for
additional suggestions. You may find helpful the following booklet prepared by the Federal Communi-
cations Commission:
‘How to Identify and Resolve Radio-T V Interference Problems”
This booklet is available from the U.S. Government Printing Office, Washington, D. C., 20402,
Stock No.004-000-00345-4.

| on ol
Important Notes
@ Please make sure that the line voltage
meets the rated voltage on the nameplate.
@ This unit might get hot while operating,
but there is no need to worry about.
@ Do not open the cover, or you may get
an electric shock,
e@ |f the unit is not to be used for a long
period of time, disconnect the power
cord from the socket.
@ Operating the unit near a neon or fluores-
cent lamp may cause noise interference.
If so, change the angle or position of the
unit.
e Avoid using the unit in excessive heat or
humidity or where it may be affected by
direct sunlight or dust.
e Use a soft cloth and clean only with a mild
detergent.
@ Do not use solvents such as paint thinner.
PANEL DESCRIPTION
MODULATION
Front Panel
@ Input Jack
This jack receives signal sent from a musical instrument, or
from a mixer.
@ Effect Switch
This switch turns on or off the chorus effect. Pressing the
switch will turn the effect on, and pressing it again turns it off.
© Effect Indicator
This lights up when the chorus effect is on.
© Input Level Control
This adjusts the level of the signal fed into the CE-300.
@ Input Level Indicators
The current input level set with the Inout Level Control can be
seen with these indicators.
e@ Just after the CE-300 is turned on, the indicators may light
up for a few seconds without any input signal, but there is
nothing to worry about.
© Modulation Rate Control
This knob determines the frequency of the LFO, therefore
changes the rate of the chorus effect. Rotating this clockwise
quicken the rate.
@ Modulation Depth Control
This knob determines the depth of the LFO modulation.
Rotating the knob clockwise deepens the chorus effect.
© Direct Mute Switch
This switch can mute the direct signal, therefore should be
turned on when you want only delay signal output, such as
when the CE-300 is set up between the Send and the Return
of a mixer.
@ lf the Effect Switch is turned off, and the Direct Mute
Switch on, there is no sound output.
© Direct Mute Indicator
This light up when the Direct Mute Switch is turned on.

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@ Chorus Tone Control
This controls the tone color of high frequency range. Rotating
it clockwise will make sharper chorus effect.
@ This control has no effect on the direct signal.
@ Chorus Level Control
This adjusts the level of the chorus sound.
@ This control has no effect on the direct signal. At its fully
counterclockwise position, only direct sound is obtained.
@ Output Jack A (A + B)
This is to send out the signal with chorus effect.
® For monaural output, use this jack.
@® Output Jack B
This is to send cut the signal with chorus effect
inverting LFO modulation.
@ Power Switch
@® Power Indicator
Rear Panel
@ Input Jack
This jack receives signal sent from a musical instrument
(electronic, electric), or from a mixer.
@ Output Jack A (A + B)
This is to send out the signal with chorus effect.
@ For monaural output, use this jack.
@ Output Jack B
This is to send out the signal with chorus effect created by
inverting LFO modulation.
© Effect Remote Jack
Connect the Footswitch FS-1 to this jack, and you can turn
the effect on or off with pedal operation.
@ When the Effect Switch is turned off, the above remote
control does not work.
@ Ground Terminal

CONNECTION & OPERATION
Keyboard
To Input Jack
To Effect Remote Jack
Foot Switch
(FS-1: Option)
Olele!-)
Tape Recorder
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DIRECT MUTE
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TONE LEVEL
Boss
CE-300
SUPER
CHORUS
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POWER
mon OFF
Microphone
Electric Guitar
Keyboard
Tape Recorder
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Speaker
@) Turn the Effect Switch on.
@ Connect the output of a musical instrument or the Echo
(Effect) Send to the Input Jack.
@ The CE-300 has the rated input level of —20dBm, there-
fore a microphone cannot be directly connected to the Input
Jack. (Use the Mixer BX-400.)
e If both Input Jacks on the front and rear panels are used
at a time, the one on the front panel has priority.
@) To obtain natural and rich chorus effect, you may connect
the both Output A and B to the amplifiers’ inputs. For
monaural output, however, use the Output Jack A(A+B).
e The both Outputs on the front and rear panels can be in
use at a time.
Power Amplifier
Output Jack
Speaker Amplifier
Amplifier
) Rotate the Input Level Control until desirable volume is
obtained.
@ The appropriate position is where the Input Level Indi-
cators up to + 6aB light up.
@ If the signal exceeding the maximum input level (over +
12dBm) of the CE-300 has been fed, the created sound may
still be distorted even if input level is set to low.
@) Set the Modulation Rate, and Modulation Depth Controls
to around the blue markings. Then while actually listening the
sound, set them to your taste.

BLOCK DIAGRAM
:
REAR
INPUT INPUT
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FRONT
INPUT
MODULATION
RATE DEPTH
4
DIRECT MUTE ON-OFF
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FRONT
OUTPUT
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AiA*Bi
CHORUS
LEVEL
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OUTPUT
8
EFFECT
a ON/OFF
OPEN ON
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EFFECT ON/OFF
SPECIFICATIONS
How to mount the CE-300
The CE-300 can be mounted in a
standard 19” rack with 5mm screws
as shown on the right.
SUPER CHORUS CE-300
Input Level (Rated) ................ —20dBm
Input Level (Maximum) ............ +12dBm
Input Impedance .................. IMO
Output Level (Rated) .............. —20dBm
Output Level (Maximum) .......... +12dBm
Output Load Impedance ........... More than 10kQ
Galli s/s Auteurs hea erie tne Bane OdB
(OdBm = 0.775 VR.M.S.)
CONWONS) ose eet ee ae EIS Input Level, Modulation Rate, Modulation
Depth, Chorus Tone, Chorus Level
SWITCHES: jcc: dv Scsachodel narh ba oar ass Effect, Direct Mute, Power
Indicators ........... 0.00. c cece Effect, Input Level, Direct Mute, Power
WRECKS i ei duns wine Ket ata ee wie eae wad Input x 2
Output A(A+B) x 2
Output B x 2
Effect Remote (ON/OFF) x 1
POWEDS hy ross aa ula ads add ecg-a gy Song y 117/220/240V AC 50/60Hz
Power Consumption ............... bW
Dimensions .................000005 482(W) x 47(H) x 246(D) mm
19" (W) x 17/8"(H) x 9"/16"(D)
Weights 125 cc tesa ainda vase ants 3.1kg/6lb 1402
OPTIONS ...................... Foot Switch FS-1
*Specifications are subject to change without notice.
pL
C€-300
19"rack
5 mm screw
UB0SS
Products of Roland
Printed in Japan Sep. ‘84 C-3

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RUS10070
Us10070
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