Roland ac-90 Owner's Manual

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Example of Using Two Channels Combined
When Using a Mic and a Pickup
GUITAR CHANNEL: 
Piezo or Magnetic Pickup
MIC/LINE CHANNEL: 
Condenser or Dynamic mic (SELECT button = MIC)
This allows you to blend the fat midrange of the pickup with the 
mic’s delicate high end.
Set the PHANTOM switch to ON if using a condenser mic.
When Using Two Guitars
GUITAR CHANNEL: 
Guitar 1 
Piezo or Magnetic Pickup
MIC/LINE CHANNEL: 
Guitar 2 
Magnetic Pickup (SELECT button = LINE)
You can switch guitars without having to readjust the volume 
and tone.
When Using One Guitar with Two Types 
of Pickups
GUITAR CHANNEL: 
PiezoPickup (PICKUP button = PIEZO)
MIC/LINE CHANNEL: 
Magnetic Pickup (SELECT button = LINE)
You can balance the volume levels using each channel’s 
VOLUME knob, and adjust the tone for each pickup to attain the 
optimal sound with the equalizer (BASS/MIDDLE/TREBLE) 
knobs.
PIEZO
Condenser mic or Dynamic mic
MAGNETIC
or
MAGNETIC
PIEZO
MAGNETIC
or
Guitar 1
Guitar 2
PIEZO
MAGNETIC
AC-90_egfispd.book  Page 14  Tuesday, August 14, 2007  10:09 AM