Behringer Racktuner BTR2000 - Manual (Page 12)

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RACKTUNER BTR2000
1. Briefly press the TRANSPOSE/REF button. The TRANSP light flashes and the display shows the
transposition currently set (0, if no transposition is set).
2. Turn the wheel to transpose up to 7 half-tones higher or lower. The display indicates the number of
half-tones by which a non-transposed instrument is too high (1, 2, ..., 7) or too low (-1, -2, ..., -7),
when compared with the BTR2000 transposition.
3. You can exit this menu by pressing the TRANSPOSE/REF button again.
4. When a transposition is set, the TRANSP LED above the TRANSPOSE/REF button lights up.
Example
A piece should be played in F major. This key has 1 flat, and thus it has several complex fingerings.
You want to retune the guitar so that you can use G major fingerings to play F major chords. To do this,
you must transpose the instrument down 2 half-tones.
s
To set the transposition, briefly press the TRANSPOSE/REF button. The display still shows the
number 0 (no transposition set).
s Turn the wheel so that the display shows the number 2 (2 half-tones higher). Now your instrument
is tuned 2 half-tones above the tuner and must be tuned down.
+
When a transposition has been set, the TRANSP LED above the TRANSPOSE/REF button
lights up.
s Select a tuner mode (chapter 4.2) and tune all strings of your instrument as described in chapter
4.1.
s When the tuning process is finished, the fingering for a G major chord plays an F major chord.
+
The calibration settings are stored even if you switch the BTR2000 off.
To turn off the transposition, press the TRANSPOSE/REF button and turn the wheel until the display
indicates a transposition up/down or 0. The TRANSP light goes out.
4.5 Setting your own tempering
The topic of “tempering” is a very interesting and extensive one. It has been much studied scientifically
and this knowledge gives you many ways to work with the specific characteristics of your instrument and
individual pieces.
This topic can only be touched upon here. You can find more exciting information about this at our
website at www.behringer.de (www.behringer.com).
Equal tempering
The pre-set tuner modes of the BTR2000 are all based on an equal tempering. This means that only
the octave interval is exactly right (frequency doubling); to generate other intervals, the octave is
divided into 12 equal half steps, which make up the individual intervals (e.g. a fourth = 5 half steps).
However, the resulting intervals do not correspond entirely to the ideal intervals (intervals of a natural
scale); each interval is slightly out of tune. At any rate, these deviations are barely audible and are
thus not perceived as dissonant.
This type of tuning is nevertheless a compromise, but it enables all keys to be played with just one
tuning.
Custom tempering
The BTR2000 tuner makes it possible to tune using different temperings, whether existing or customized.
This means that some strings are tuned a few cents higher or lower according to a certain system. The
scale of the LED bar can be changed from ±50 cents to ±10 cents. This enables extremely precise
tunings since each light in the bar corresponds to exactly 1 cent.
+
Before starting fine tuning, you should first tune your instrument as described in chapter
4.1.
1. To change the scale of the LED bar, press and hold the MODE/FINE button. If the “±10 Cent”
display is selected, the FINE light above the MODE/FINE button lights up.
2. Tune your instrument as described in chapter 4.1. Now you can see the smallest deviations from
the pre-set pitch on the LED bar and adjust them with complete confidence.
4. TUNER