M
IX
E
R
CLIP
LIMIT
MIC
10
0
BASS
12
12 dB
TREBLE
12
12 dB
LINE/CD
10
0
dB
NX55P
LEVEL
6
00
LF ROLLOFF
0
100Hz
60Hz
MIXER
OFF
ON
PWR
MIC
INPUT
OUTPUT
A-Z822 / 1v0 PR1
LINE / CD
INPUT
OUTPUT
BAL
LINK
9. Line/CD Control
This control adjusts the volume level of devices
plugged into the Line/CD input. The signal out
to other cabinets, from this device, through
the link connections will be affected as well.
A line-level signal and microphones can be
connected simulataneously.
10. Treble and Bass Controls
These controls affect the signals from
devices plugged into the Line/CD and Mic
inputs. The signal out, to other cabinets,
through the Link will also be affected. These
controls do not affect signals coming into
the cabinet from the Link connections.
11. Green PWR LED
Illumination indicates that AC power is on and
the fuse is functioning.
12. Yellow Limit LED
This indicates that the cabinet is operating
at full power and the limiter(s) are actively
reducing the signal level. It’s all right to
operate in limiting as long as the clip light is not
constantly on. The Limit light does not indicate
low frequency processing action. There are
separate limiters for the woofer and horn. This
LED will indicate operation of either limiter.
13. Red Clip LED
The illumination of this LED indicates that
the signal level is excessive and may cause
distortion. Reduce mixer levels or turn down the
Level control (on Nx55p) to reduce clipping.
14. Power Switch
This turns the power On and Off to the
cabinet. Note; a cabinet that is turned off,
but is one of the cabinets in a chain might
cause hum (or buzz) in the other cabinets.
15. Fuse
The mains fuse should never blow even in
extreme operating conditions. A blown fuse will
generally mean that excessive mains voltage
has been applied or there’s a serious fault with
the unit. Self re-setting thermal switches are
built into the power transformer as well as on
the internal heat sink. These will not trip even
under the most extreme operating conditions
and are provided only for safety reasons.
Thermal margins may be compromised when
operating facing straight up, straight down or
while operating in direct sunlight!
A note about unbalanced operation: When
connecting an unbalanced source (such as
a mixer with RCA outputs) to balanced inputs
such as an Nx55p, the best hum rejection
can be achieved by running a balanced
connection right to the unbalanced plug. The
return connection should be connected to
ground at the unbalanced plug. The Nx55p
does not connect the AC power ground
directly to the input signal ground. This will
eliminate most ground problems.
