User manual

3
92798 Cape Arago Hwy, Coos Bay, OR 97420 | 541-888-3517 | Toll Free 1-800-867-6863 | www.kksound.com
CONNECTION TO AMPLIFIER
Use a regular guitar cable (not supplied) to connect
the output-jack of the pickup with the input of the
preamp. Connect the output of the preamp to an
amplifier with a regular mono guitar cord. Please
note that a stereo cable will NOT switch on the
preamp.
USING THE PHASE SWITCH
The Definity Preamp has a miniature phase switch
mounted on the battery side of the circuit board. It is
a sliding switch (a small white tab) that you can slide
to the left and right with your finger or with a small
screwdriver. There are only two settings.
The Pure XLR Preamp has a push-release phase
switch on the back.
Phase switches are usually marketed as a feedback
controlling device, but they accomplish more than
just that. A phase switch inverts the amplified sound
wave so that it does not interfere with the original,
un-amplified sound coming from your instrument.
Every acoustic instrument projects sound waves into
the air at a certain phase when it is played
unplugged. For optimal sound amplification, the
phase that is projected from the amplified speaker
source needs to be "in phase" with the acoustic
instrument's own acoustically generated sound
waves.
The problem is that amplification systems, effect
units, or any electronic audio device may or may not
invert the phase of the incoming signal. The
manufacturers do not specify. An out-of-phase
problem is indicated by early feedback and
somewhat tinny, unbalanced sound. This may be
tolerable in some tone ranges and quite noticeable
in others, even resulting in sound cancellations on
some notes.
By toggling the phase switch back and forth on the
Definity Preamp or pushing/releasing it on the Pure
XLR Preamp, you will notice fuller, warmer, and
nicely balanced tone with less feedback in one
setting. This is the correct phase switch setting. Keep
in mind that it may be different with different
amplification systems.
DEFINITY PRO WITH PURE XLR PREAMP
The Pure XLR Preamp operates on 12–48 volt
Phantom Power or 9-volt battery. The LED light on
the front-panel indicates if phantom power is present.
In order to save battery life it will not light when the
unit is running on battery power.
With phantom power, the battery will not be drained
as long as the phantom power provides more than
10 volt.
FRONT:
BACK:
CHANGING THE BATTERY
To insert and change the battery, open the 2 screws
on the sides of the unit, remove the lid, connect a
new 9-volt battery to the battery clip and place it in
the marked compartment.
The unit is delivered without a battery.
UNPLUG THE INPUT CABLE IN ORDER TO SWITCH
OFF THE BATTERY!
ADJUSTABLE GAIN CONTROL
Gain and volume both have an effect on the output
volume of the preamp, but they accomplish different
tasks.
The gain (also called input gain or sensitivity control)
is located at the INPUT of the circuit. It sets the
amount of pre-amplification before the signal enters
the EQ section, DI etc. The volume control is located
at the OUTPUT (the very end of the circuit) and
simply allows you to adjust the volume.