Radial Engineering JX 42, Руководство пользователя, Страница: 9 / 16

True to the Music
®
Radial Engineering Ltd. JX-42™ Guitar and Amp Switcher
6
usInG THe DraG anD TrIM ConTrols
One of the innovative features found on the JX-42 is the combination
DRAG and TRIM control. This ‘trick’ is done using a dual wafer
potentiometer with one wafer dedicated for the Drag function, the other
for Trim. You merely select between the two functions using the recessed
‘set & forget’ switch.
adjusting the Trim Control
When combining non-buffered signals such as a typical passive Fender ®
bass with a buffered source such as an active Yamaha
®
bass or wireless
system, you will find that the signals can vary significantly. You can
convert the DRAG control to a TRIM by simply pushing the recessed
switch outward. To adjust the trim, set the potentiometers fully clockwise
to 5 o’clock. Once all of the instruments are connected, compare them by
switching between one another. For those that are loudest, simply reduce
the level to suit.
adjusting the Drag Control
A common complaint from guitarists is the way that buffers alter the
tone of their instrument. This is most commonly heard from players that
employ wireless systems. Part of the problem is manufacturers have
followed Leo Fender’s lead by employing the same 1MΩ input that
Fender
®
used on his tube amps. Early on, we discovered that a 1MΩ
input sounds very different when used with a solid-state circuit and is
likely one of the reasons guitarists still prefer the warmth of a tube amp
over the solid state counterpart.
Drag™ control is a load correction circuit that lets you adjust the load
or the impedance that is applied to the incoming source. Drag control
only works on passive devices such as magnetic pickups. If the signal is
buffered, the control will have little or no effect on the tone. Active basses
or acoustic guitars with built in preamps and electronic keyboards are
examples of buffered sources. Drag essentially replicates the ‘tone and
feel’ as if connected to a tube amp, producing a warmer, more natural
tone. Start by setting the Drag control to 12 o’clock. As you turn the
control clockwise, it will sound brighter, when turned counter-clockwise,
darker. Simply adjust to suit.
DraG
select
TrIM
select