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
1. Operation
The Nx55p is a bi-amped powered full-
range loudspeaker with a built-in two
channel mixer. Multiple Nx55p cabinets
may be connected through the Link option.
If you’re using the Nx55p 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 Nx55p with a subwoofer.
2. Mic Input
Any regular microphone can be inserted into
the Mic input. Phantom power is built–in for
condenser microphones.
3. Line/CD inputs
The Line/CD inputs allow line-level sources such
as CD players, cassette decks or any other
sources such as mixers to be connected. If
more than one input is used these inputs blend
the signals (e.g. stereo sources) into mono. The
inputs are balanced to help reject hum (when
used with balanced cables) Unbalanced 1/4-
inch plugs can be used. When connecting
to unbalanced sources using balanced T.R.S.
cables does help reduce unwanted noise
and/or hum. These inputs can be used for
lower-level Line inputs, which need a bit more
gain (as opposed to using the Link jacks, which
have no control). These inputs allow you to
have a greater range of level adjustment
than using just the Nx55p Level control (e.g. if
an individual cabinet, in the chain needs to
operate at lower level than the rest).
4. Link
These parallel jacks allow multiple Nx55p
cabinets to be connected together. The Link
Jacks are the correct input to use when driving
the Nx55p from an external mixer. The Link Jacks
operate at line level (+4 dBv) to achieve full
power. The Nx55p 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. When connecting to unbalanced sources
using balanced T.R.S. cables does help reduce
unwanted noise and/or hum. 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.
5. Level Control
This control allows the audio level of the
cabinets, linked in a chain, to be individually
adjusted. This control does not adjust the level
of the Link jacks. The Level control should be
set at '0' (center) for most applications.
6. 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.
7. Mixer On/Off
This switch turns the internal mixer On or Off.
When the Mic or Line/CD inputs are used, this
switch must be set to the On position. If these
inputs are not being used, the mixer should
be turned Off. This will help prevent the mixer
from loading the Link, or the Internal Mixer, and
contributing noise to the system. The internal
mixer should not be used when a source
other than another Nx55p or similar cabinet
is connected to the LINK jacks. Remember, a
maximum of three mixers, in a chain of cabinets,
should be used! A much larger number of
cabinets may be used with the Nx55p mixers
disabled on the additional cabinets.
8. Mic Control
This control adjusts the volume level the Mic
input. The microphone signal output to other
cabinets through the link connections will be
affected as well.
