Features:
• Ultra-clear reproduction throughout the
whole bandwidth
• High efficiency, high tech, 550 Watt Bi-
amped power module
• Superior TX-style processing and
component protection
• True 1 inch diaphragm horn driver
• Low distortion/high power-handling 12
inch woofer
• –
∞
dB / + 6 dB Level control (for individual
cabinet level adjustment)
• XLR and TRS inputs / outputs for easy
connection and looping
• Multi-input source mixer for direct inputs
• Direct microphone input with level control
• Two way overall EQ controls
• Integrated flying hardware (3/8 inch
threaded holes)
• Tough, full-length metal grille
• Recessed Mixer panel
Operation
The NX550P is a bi-amped powered full-
range loudspeaker with a built-in two
channel mixer. Multiple NX550P cabinets
may be connected through the Link option.
If you’re using the NX550P with an external
mixer, the internal mixer can be disabled.
The built-in mixer has a microphone input
and two (combined) ¼ inch inputs for line
sources such as CD players. Advanced
signal processing is used to give maximum
performance at all levels. There’s a switch
to provide a low frequency rolloff if you’re
going to use the NX550P with a subwoofer.
Mic Input
Any regular microphone can be inserted into
the Mic input. Phantom power is built–in for
condenser microphones.
Line/CD inputs
The Line/CD inputs allow line level sources such
as CD players or Cassette decks to be directly
connected. These inputs are combined to
allow the blending of stereo sources into
mono. The inputs are also balanced to help
reject hum (when used with balanced cables).
This input may be used to allow operation from
lower-level Line inputs (as opposed to the Link
jacks). It may also be used to accommodate
a greater range of level adjustment than the
NX550P Level control allows (for example a
cabinet in a chain of cabinets that needs to
operate at much reduced level).
Link
These parallel jacks allow multiple NX550P
cabinets to be connected together. The Link
Jacks are the correct input to use when driving
the NX550P from an external mixer. The Link
Jacks operate at line level (+4 dBv) to achieve
full power. The NX550P Level control allows
operation at levels from –2 dBv to +10 dBv for
full power. When operating from signals that
are not as strong, use the Line inputs of the
first cabinet in the chain. The Link jacks are
high quality balanced inputs with very good
common mode (hum) rejection. To ensure
maximum hum rejection, the proper balanced
cables must be used. Jacks marked LINK
OUTPUT are connected in parallel with the
LINK INPUTS and are provided for convenience
to connect downstream cabinets. Link inputs
may also be used as outputs and link outputs
may be used as inputs.
Level Control
This control allows cabinets, linked in a chain,
to be individually adjusted over a +/- 6 dB
range.This control does not adjust the level of
the Link jacks.
LF Rolloff
For operation with a subwoofer, the LF Rolloff
switch shuts off the low frequency boost and
filters out signals below 100 Hz. It’s not necessary
to use this switch for speech applications
because the Mic input already has a high pass
filter. This switch only affects the signals to the
internal amplifier and does not affect signals
going out from the internal mixer, or to signals
passing through the Link connections.
MIC
LINE / CD
INPUT
INPUT
OUTPUT
OUTPUT
BAL
LINK
M
IX
ER
CLIP
LIMIT
PWR
NX550P
LEVEL
MIC
LINE
/ CD
10
0
TREBLE
BASS
12
12 dB
12
12 dB
10
0
6
8 dB
LF ROLLOFF
0
100Hz
60Hz
MIXER
OFF
ON
