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12 X V-AMP LX1-X User Manual
7. Tuner
The integrated tuner is activated/deactivated by simultaneously pressing
both footswitches. In doing so, the X V-AMP is switched into bypass mode.
UseADJUSTto modify bypass volume.
7.1 Tuning your guitar
The chromatic tuner automatically recognizes the frequencies of all the standard
guitar notes. For the a string this means a frequency of 110 Hz. When you plug
your guitar into the X V-AMP and play an open string, the tuner will recognize
and display the note. Since the tuner uses an auto-chromatic scale, it can also
recognize semi-tones, which are shown with a “b” in the display.
It may happen, however, that a note is displayed as “A” but is actually slightly out
of tune. This is shown by at least one of the four LEDs at the foot of the display
lighting up. In certain cases even two of the LEDs may light up, which indicates
that the pitch of the note played lies between the pitches represented by the two
LEDs. When the circular tuner LED in the middle lights up, this means the note
played is in tune.
7.2 Setting reference pitch “A”
To give you maximum freedom for tuning your guitar, you can change the preset
reference pitch “A”. For clarity’s sake, let’s look at this in more detail.
The so-called concert pitch “A” has been raised steadily over time. For example,
the tuning forks used by Bach, Händel or Mozart were 415, 420 or 421 Hz
(oscillations per second). Today’s orchestras tune to “A” at 444 Hz, and the Berlin
Philharmonic Orchestra lead the eld with their own concert pitch “A” at 447 Hz.
The reference “A” on your X V-AMP has been factory-programmed at 440 Hz.
Ifyou are going to play with a big orchestra tuning their instruments to a
reference pitch of 444 Hz, you will need a function that allows you to change your
reference pitch. To activate this function, switch on the tuner by pressing both
footswitches simultaneously. Then, keep TAP pressed down to start calibrating
the tuner. The display will show “40”, which means 440 Hz. Use ADJUST to raise
or lower the reference pitch by up to 15 Hz. The display always shows the last
two digits as the rst digit is always 4. To quit, simply release TAP. Any changes
will be stored automatically. The tones for the other strings on your guitar will
automatically be adjusted to the new reference pitch.
8. Installation
8.1 Audio connections
The input of your BEHRINGER X V-AMP is a mono ¼" TS connector. The line
out/headphone output comes as ¼" TRS stereo connector. The line output works
with both balanced and unbalanced connections.
strain relief clamp
sleeve
tip
sleeve
(ground/shield)
Unbalanced ¼" TS connector
tip
(signal)
Fig. 8.1: ¼" TS connector
strain relief clamp
sleeve
ring
tip
sleeve
ground/shield
For connection of balanced and unbalanced plugs,
ring and sleeve have to be bridged at the stereo plug.
Balanced ¼" TRS connector
ring
cold (-ve)
tip
hot (+ve)
Fig. 8.2: ¼" TRS connector
strain relief clamp
sleeve
ring
tip
sleeve
ground/shield
¼" TRS headphones connector
ring
right signal
tip
left signal
Fig. 8.3: Headphones connector