Acoustic Image + Models - Manual (Page 5)

6
Coda+ and Corus+ Control Panel
POWER
AMP
EXT
SPEAKER
INTERNAL
SPEAKER
DEFEAT
SWITCH
OUTPUT STAGE CONTRA
BYP
FX
FX
BYP
CH 2
SWITCH FX
CH 1
SWITCH FX
CH 2
RETURN FX RTN
LEVEL
FX HEADPHONE
OUTPUT
H/P
AMP
CH 1
RETURN FX
RTN
LEVEL
FX
Input
Level Bass Mid Treble Level
Input
Level Bass Mid Treble Level
Channel 1
Channel 2 Send
Return
Freq
Direct Out
Master
Power
Level Effects
Phantom
Phantom
Hall
Room
Plate
Delay Ambient
Chorus
Flange
Off On
Off On
Off On
Low Cut
Send
Return
Ch 1
Ch 2
Post EQ Mute
Ch 2 Ground
lift
Off On
30
60
400
Effects
Loop
Effects Loop
30 400
60
Phase Inv
Freq
Low Cut
Phase Inv Off On
Off On
Mic
Atten
Mic
Atten
7
A ground lift switch is available to “lift” the ground from the output of the direct out--
reducing noise should a ground loop create hum when the unit is connected to a
mixing board.
A switch is provided to allow you to mute the output of the amplifier without having to
turn the amp off. This will allow you to tune your instrument on stage without being
heard. The amp output and direct out signals are both muted by the switch. The
mute switch has a red button on it to remind you that it is an important switch.
The two-channel preamp of the Coda+ and Corus+ can be operated in stereo mode.
When it is in the “on” position, the switch labeled “Ch 2” connects the channel to the
internal power amp and speaker. When it is in the “off” position, it is disconnected
from the internal amp but is accessible from the channel 2 send output. By
connecting the send output to a satellite power amplifier, and putting the switch in
the off position, the preamp operates in stereo mode. Note that channel 2 remains
in the direct out signal even when the switch is in the off position. This is done since
stereo operation is typically a “stage” mode but not a “house” mode (house systems
are typically not stereo). The Ch 2 switch has a red button to remind you that is is an
important switch.
Our high-quality effects units offer 6 program selections: 3 reverb programs (Hall,
Room and Plate), a delay, an ambient chorus and a flanger. There are switches to
select which of the two channels are processed by the effects unit. Either channel
can be connected to the effects unit. If both switches are engaged, the selected
program appears in both channels. A level control affects the level of the effects
signal that is mixed with the “dry” signal to control the overall effect of the selected
program. You should experiment with both the program selection and the level
control to find the sound that you prefer. When effects are not used, the switches for
both channels should be off and the level control should be turned fully
counterclockwise. Note that the flange effect is noisy, it is normal the hear the
modulation of the flanger when no signal is present.
There is headphone output on the rear panel of the Coda+ and Corus+. You can plug
a standard 1/4 inch stereo plug into this output to connect a headphone for private
listening. If your headphone has a 1/8th inch plug, you can buy an adapter to allow
you to use the 1/4 inch output jack.
When you plug into the jack, the amp is muted. Sound will only be heard through the
headphones. The headphone is connected to the output of the preamp so all of the
controls on the preamp, including effects, will affect the signal heard through the
headphone. When the headphone plug is removed from the jack, the amp will come
Mute Switch
If you
are not getting any sound out of the amp, check to make sure that the mute
switch is off.
Stereo Operation (Coda+, Corus+)
Note that channel 2 will not be heard through the speaker
system unless the Ch 2 switch is in the depressed or on position. If you are not
hearing channel 2 in the output, check to be sure that the switch is on.
Effects (Coda+ and Corus+ only)
Headphone Output (Coda+ and Corus+ only)