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decrease as the note comes closer to tune, and rotation will stop when the note reaches correct
pitch. The LEDs for the SPEED/ADJ (17) control show a more standard tuning display where the 12
o’clock position illuminates when the note is in tune. The DEPTH (18) control sets tuner volume in
this mode.
In the Bass mode, the tuner searches for standard bass notes and automatically selects the closest
standard tuning note in relation to the note being played. In the Chromatic mode, the tuner tracks all
notes, whether they are standard or not. For example, if an F note were played it would be tracked
as such, lighting up both the E and G LED displays since F is between E and G. The BAM’s tuner
also allows Eb tuning. To enter this mode, press the USER (5) button while in the Tuner mode.
Tuner settings can be saved by pressing the STORE (6) button.
FOOTSWITCH
The PFC
™
4B operates in four different modes: Preset, Bank Select, EFX Select, and Tuner. The
buttons on the footswitch perform different functions based on the active mode. Mode selection is
accomplished via the EFX SELECT MODE (36) and BANK (37) buttons. The function of each button
in the various modes is described by mode in the section below the diagram. If a particular button is
not listed, it has no function in that mode.
PRESET MODE
This mode is the default setting. When the amplifier is powered up, the footswitch will be in this
mode. Selection of individual presets within the current bank can be accomplished in this mode. The
active bank is indicated by illumination of the corresponding yellow LED (A, B, C, D). The current
preset within the bank is indicated by illumination of the corresponding red LED (1, 2, 3, 4). Buttons
38 - 41 change the preset. The green EFX Mode LEDs will light dimly in this mode if their function is
enabled.
E A D G CB
36 37 38 39 40 41
42 (on rear)