YORKVILLE BASSMASTER xs400 Manuel De L'utilisateur page 6

The Bass control adjusts the level of the lowest note frequencies, Low Mid the next range up from
that, Mid controls the mid frequencies (variable between 150 - 1500 Hz, more on this below), Hi
Mid covers the highest notes and middle harmonics and Treble regulates the upper harmonic
range. The Semi-Parametric Mid controls the midrange frequency parametrically. Adjustment of the
Frequency control selects which frequencies to cut or boost ranging from 150 Hz to 1500 Hz.
Tip: To set this control, adjust the position of the Mid level control to cut or boost, then rotate the
Frequency control until the desired frequency range is found. Once the frequency range is chosen adjust
your level to the desired cut or boost level. One thing to keep in mind about the Parametric Mid is that
it's also used to further adjust the Scoop effect by either boosting or cutting frequencies in the midrange.
If you like the added bottom of the Scoop but wish to soften the midrange at 1Kz but still maintain the
higher frequencies, adjust the frequency control to 1.0Kz, cut as much as you need until satisfied.
Scoop Control
The Scoop shapes high and low frequencies giving a distinctive tone and presence to your bass
guitar. You will find that this feature greatly enhances the natural sound of any bass. It also helps
bring out the subtleties of the strings by shaping bottom-end fundamentals and high frequency bril-
liance that you can clearly hear and feel.
Tip: It's recommended to initially set it at the mid point and adjust it slowly either way until the desired
tone is achieved.
The Scoop shapes specific upper and lower frequencies while notching particular mid frequen-
cies. It utilizes a variable tone curve that reacts differently depending on where it is set. The result
is a greatly expanded tonal range and control over the tone. Its fundamental use is like the tradi-
tional Scoop control found on our other popular Yorkville Bassmaster amplifiers, but with greatly
expanded dimension and tonal control.
Tip: Combine the Scoop with the Drive and Drive Mix for unparalleled levels of tonal control. Activate
the Drive and the Drive Mix to their maximums and play your bass while slowly turning the Scoop
from its off position to its maximum, you'll find the variation in the effect to be quite dramatic and yet
very musical at the same time.
EFX Return Blend Control
A Dry, un-effected signal is sent out through the EFX Send jack to any effects unit you hook-up,
then returns back to the amplifier through the EFX Return jack. The Effects Blend control then
determines how much of the wet signal is blended back with the dry signal. This can range from
totally dry to mostly wet.
Tip: The total signal level can also be controlled by the output signal from the chosen effects unit.
Therefore you might want to set the output high if you want to achieve an almost totally wet signal.
Dual Footswitch Jack (Drive and EFX-RTN)
The Dual Footswitch Jack is used to switch the Drive and the EFX-Return on and off. Insert a
Stereo ¼-inch patch cord into a dual footswitch (TFS-2) and into the amplifier. When either effect
is switched on, both the LED's on the amplifier and on the foot switch will turn on and off together.
The EFX-RTN is only switchable by the footswitch, but the Tube Drive is switchable by both the
footswitch and by the switch on the front panel.
Note: The footswitch will override the front panel switch if used.
Tuner Out and Mute
The Tuner Out ¼-inch jack, located on the right side of the front panel, sends the signal from your
bass guitar to an outboard instrument tuner. Simply connect one end of a ¼-inch shielded cable to
the Tuner jack and the other to the instrument tuner. Pressing in the Mute button will mute the out-
put to the speakers as well as to the lineout.
Tip: Leave your tuner connected to the Tuner Out jack and Mute the signal any time you wish to tune
in silence. A very handy feature when onstage and the unpleasant sound of tuning is not something
you wish the audience to hear.
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