Acoustic Image S4Plus - Manual (Page 6)

Pseudo Stereo Operation
only
channel 2 has this feature, connecting to channel 1 won’t work in
this mode
Headphone Output
The headphone output is to be used only for connecting a
headphone unit, do not use it as line out or to drive a low
impedance speaker.
The effects processor in the Clarus preamp is a stereo unit. As a result,
a single input can be converted to a stereo output as far as the effects
are concerned. The 1/4 inch jacks labeled “Stereo Out” on the rear
panel are where the pseudo stereo signals are accessed. To operate
in pseudo stereo mode, plug an instrument into channel 2 (
) and connect a separate powered speaker (such as the
Flex Cab) or power amp and speaker combination to each of the
“Stereo Out” jacks located on rear panel. The effects level control
affects the wet/dry mix and the input level control affects the overall
level of the signal. The master level control has no effect. You should
experiment with the operation of the pseudo stereo mode to find the
sound you like best.
The pseudo stereo mode of operation requires a power amp to be
connected to each rear panel output. It is not available using the
internal power amp of the Clarus.
There is headphone output on the rear panel of the Clarus. You can
plug a standard 1/8 inch stereo plug into this output to connect a
headphone for private listening. If your headphone has a 1/4 inch
plug, you can buy an adapter to allow you to use the 1/8 inch output
jack.
When you plug into the jack, the preamp output 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 be heard through the headphone. When the
headphone plug is removed from the jack, the amp will come back on.
Anytime anything is plugged into the headphone output jack, the amp
will be muted so make sure that nothing is plugged into the jack when
you want to use the amp normally.
8
Signal Flow Diagram
9
Low High Lo Mid
Freq
Tone
Controls
Filter
Ch1 Pre Out
Ch1 Effects
Loop
Ch2 Pre Out
Ch2 Effects
Loop
Headphone Headphone
Amp
I/O Board-Rear Pa
Hi Mid
Low Cut
Spkr Em
(Optional)
Low High Lo Mid
Freq
Tone
Controls
Filter
Hi Mid
Low Cut
Spkr Em
(Optional)
Power Supply
From
Flex
Cab
48 +V -V
From
18V
Ext
Supply
+10 dB
-6 dB
gain
jumper
-6 dB
gain
jumper
+10 dB
Ch 1
Ch 2
Phantom
Power
Phantom
Power
Input
Level
Input
Level
Simulated
Stereo Output Note: all switches are illuminated
when in the on position