Maximizing Music And Minimizing Noise - Kurzweil K2000 Service Manual

SECTION
4.4.10
4,4.11
4.5
4.5.1
4.5.2
MAINTAIN. PUB 11/04/92
4
there
is
often an adjustment on the pedal that might correct
that.
The only solution for
a
highly nonlinear pedal
is
replacement of the potentiometer
(which probably
has
a
so-called
"audio taper") with one that has between lOK and lOOK of
resistance and
a
"linear taper".
As seen, the diagnostic program can also be used
to check out
the built-in panel and performance controls of the K2000.
Like
the Controller Slider,
moving either wheel
or pressing
on the
keyboard will show
a
controller name and reading between
0
and
255.
If you
move the Alpha Wheel clockwise, the numbers will
go
0-1-2-3-0-1-2
..
.while
counterclockwise should produce 3-2-1-0-3-
2... If you
press
a
button, its name will be shown and if
it is
one of the mode buttons, its associated LED should flash.
The third line of the display shows the results of two
measurements that are made whenever your K2000
is
turned
on.
The battery voltage will be about 4.5 volts for new batteries
gradually declining over time
to 3.2 volts, at which point you
will begin
to receive warnings
(see
"BATTERY SELECTION AND
REPLACEMENT"
above)
.
The wheel referred to
is the spring-
centering software will work perfectly.
If it is outside that
range, the
wheel will still be automatically centered but you
may not
get the full control range in one direction.
Please see
your Kurzweil/Young Chang dealer for any needed wheel
adjustments
MAXIMIZING MUSIC AND MINIMIZING NOISE
The K2000 quite possibly has the lowest noise and widest dynamic
range of any instrument in the industry.
The following tips
will enable you
to
make the most
of this, and optimize the
K2000*s audio interface
to your other equipment.
Setting your audio levels appropriately
is the key to optimizing
the
signal-to-noise ratio of any piece
of equipment,
you may
have noticed that the K2000*s output signal seems less "hot"
than most other synths when using the unedited factory sounds.
This
is
to allow virtually any configuration
of voice
assignment
to be used
(up
to 96 oscillators directed
to one output!), and
played very loudly with almost no chance
of overload distortion.
For
more controlled adjustments,
it is best
to increase the
output level digitally
(by
editing programs) instead of
increasing the gain
of your amplifier or mixing board.
This
is
because
a
digital gain increase
is
completely noiseless whereas
an
analog increase will proportionally increase hum and noise
from the connecting cabling and from the K2000 itself.
Increasing the volume digitally can be accomplished
in three
ways. You can increase the volume of all programs assigned
to
a
given MIDI channel by selecting the CHANLS page in MIDI mode and
setting the OutGain parameter
to the desired level
(in 6dB
steps)
.
For multi- timbral sequences
(on
multiple MIDI
channels), you will need to do this for each channel.
Alternatively
you can increase the volume of
a
single program by
going to the OUTPUT page in the Program Editor and setting the
Gain parameter
to the
desired
level, again
in 6dB steps.
For
finer adjustment, the Adjust parameter on the
F4
AMP page
can be
used.
4