Rear Panel - Roland Jazz Chorus JC-90 Owner's Manual

5. TREBLE Control Knob
Clockwise rotation will boost the higher frequencies.
6. MIDDLE Control Knob
Clockwise rotation will boost the all-important middle
frequencies.
7. BASS Control Knob
Clockwise rotation will boost the lower frequencies.
8. REVERB Knob
Clockwise rotation will intensify the reverb effect.
9. RATE Knob
This knob adjusts the rate (frequency of the sound
vibrations) of the chorus effect. Clockwise rotation increases
the chorus speed.
< Rear Panel >
14. EFFECT LOOP SEND Jack
This is the jack from which the dry (unprocessed) signal is
sent to the effects device.
15. EFFECT LOOP RETURN Jacks
These are input jacks for the return signal from your effects
device. Stereo connections (L/R) are possible. To use the unit
in mono, use the L (MONO) jack only.
* Before you make connections to the RETURN jack(s), be sure to
switch the units off.
16. LINE OUT Jacks
Use these jacks to connect the JC-90 to another guitar
amplifier or mixer, or to a tape deck for recording. A stereo
pair (L/R) is provided, but mono connections are also
possible (use the L (MONO) jack).
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PHONES FOOT SWITCH
CABINET VOICED CHORUS REVERB
10. DEPTH Knob
This knob adjusts the depth of the chorus effect. Clockwise
rotation deepens the chorus effect.
11. CHORUS Switch
This knob selects the Chorus effect mode (FIXED/OFF/
MANUAL). When it is set to the "OFF" position neither
effect will be obtained.
* Neither the speed nor depth of the FIXED mode can be changed.
12. Pilot Lamp
This will light when the amplifier is switched on.
13. POWER Switch
This switch turns the amplifier on and off.
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LINE OUT EFFECT LOOP
DIST R L (MONO) RETURN SEND
R L (MONO)
17. FOOT SWITCH Jacks
With the proper foot switch connected to the appropriate
jack, you can obtain on/off control of Chorus, Reverb and/or
Distortion.
* Even when a foot switch is turned on, no effect will be obtained if
knobs 2 and 11 are "OFF" positions.
18. PHONES Jack
Connect headphones to this jack. When headphones are
connected, no sound will be output through the internal
speakers.
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