Introduction
The
nx200s
active subwoofer uses a
200 watt
amplifier to enhance the bottom end (bass)
of a full-range speaker system. Using the
nx200s
does increase the overall output of
the system slightly. The inputs to the subwoofer accept a single source either from a speaker/
amplifier output or a line level output from a pre-amp or mixer.
The
nx200s
is smooth and robust at high power levels because of efficient use of the
built in
limiter
and
thermal protection.
The internal
limiter
and the internal protection are factory
optimized for maximum performance.
SPEAKER
LINE
GND
GND LIFT
POWER
OFF
PARALLEL
INPUTS
MANUFACTURED AND DESIGNED BY
YORKVILLE SOUND TORONTO, CANADA
CAUTION AVIS
RISK OF ELECTRIC SHOCK
DO NOT OPEN
LEVEL
ON
ON
dB
+3
-3
-6
+10
+25
+20
0
50Hz 260VA
T1,25A
230V
110 VAC
60Hz 260VA
AVERAGE
S
200
Yorkville
1
2
4
5
6
3
1. Power Switch
2. dB Level
Set the dB Level control to a desired level as
music is being played through the unit.
A setting of 0 dB on the dB LEVEL control
is the correct starting point when setting
up a sound system. From there the sound
can be adjusted for best sound. The 0 dB
mark refers to the setting that will give full
power when the line input is used and the
input signal is at a level of +4 dBV. This also
is the setting to give a sensitivity of 2.83
Vrms (1 watt 8-ohms) for 100 dB spl when
set for speaker level input. With a typical full
range companion speaker this will give flat
response. In either line or speaker operation
it will usually be desireable to set the control
at +3 to +6 to give some bass boost at
low power levels. At levels approaching full
power the built-in limiter will automatically
reduce the gain to prevent over powering
the subwoofer. Operation with settings
significantly above +12 may clip the circuitry
in the subwoofer reducing the dynamics of
the music. Setting the subwoofer gain above
+12 is only appropiate at low operating levels.
3. Input Level Switch
Speaker
Normally, the input to the subwoofer
is from a full-range speaker cabinet, or
amplifier output.(See figure 2)
Line
In this case, the input to the subwoofer
is from a line level source such as a mixer.
4. Ground Lift
If a hum, or buzz is detected from the
subwoofer, try setting the switch to the
GND LIFT position (OUT position). The
switch should otherwise be left in the
GND (IN position).
5. Input Jacks
The two inputs are balanced 1/4-inch parallel
jacks and can be connected as shown in
figures 2 and 3, on the following page. Please
note that there is no effect to the performance
of the full-range speaker if it is used to supply
a music signal to the nx200s.
6. Power On LED
