Setting a Reference Pitch (Position = E, ID = R)
Although the most common tuning reference is A=440Hz, it's not the only one (e.g., some
orchestras tune to A=442Hz). Or a piano may be in tune with itself, but not tuned exactly to
A=440Hz. For these situations, LPX can tune to any arbitrary reference. The basic process is
to tune LPX to the desired tuning, adjust one string to the reference pitch, then instruct
LPX to tune the remaining strings relative to the reference string.
Setting a Reference Pitch Step-by-Step
1.
Move the silver tog-pot to the tuning function. Choose one of the stored tunings (e.g.,
rotate the Gear Shift knob fully counter-clockwise to select Standard tuning by) and tune
LPX by plucking its strings sequentially as described on page 12.
2.
Tune one string (we'll call it the “reference string”) to the desired reference pitch. For
example, if you're tuning to a piano that's in tune with itself but is overall an 1/8
th
of a tone
flat, tune the reference string to the piano so that the reference string is 1/8
th
tone flat.
3.
Enter the
Red
Bank, then rotate the Gear Shift knob to the
E
position.
4.
Push down on the Digital Varitone knob; all string LEDs change to
red
to indicate that the
system is ready to determine the reference string pitch. The Peg LED shines
magenta
.
5.
Pluck the reference string. Its corresponding LED turns
green
after LPX has analyzed the
pitch.
6.
Pluck each remaining string individually to ensure the most accurate pitch detection.
After a string's pitch is properly tuned, its associated LED will turn
green
. Damp the string
you plucked, then move on to the next string until all strings are tuned to the new
reference.
7.
When all strings are in tune, LPX automatically exits Reference Pitch mode and returns
you to whichever patch had been selected prior to entering the
Red
Bank.
8.
Return the silver tog-pot to its center position.
Once the Reference Tuning process is complete, the reference tuning stays active until the
system is turned off or you select a different tuning.
Notes:
During pitch detection, LPX checks that the resulting tuning is within the allowed
pitch ranges, as specified in page 31 on Custom Tuning Preset Creation.
If a reference tuning is still active when selecting the same tuning for retuning, the
display will show the preset ID briefly in
red
when entering the tuning function,
then change to
blue
. This reminds you that LPX is set to a specific reference tuning.
Replacing Strings: General Guidelines
Because each Robo-Tuner turns extremely slowly when tuned by hand, LPX's
Red
Bank
Page
30
