NX550P
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P
550 WATT POWERED LOUDSPEAKER ENCLOSURE
550
Yorkville
OWNER’S MANUAL
MANUEL de L’UTILISATEUR
Manual-Owners-nx550p-1v40.pdf
TYPE: YS1002
IMPORTANT SAFETY INSTRUCTIONS
safety-4v3.eps • Oct. 26/05
CAUTION:
TO REDUCE THE RISK OF ELECTRIC SHOCK, DO
NOT REMOVE COVER (OR BACK).
NO USER SERVICEABLE PARTS INSIDE.
REFER SERVICING TO QUALIFIED
SERVICE PERSONNEL.
INSTRUCTIONS PERTAINING TO A
RISK OF FIRE, ELECTRIC SHOCK,
OR INJURY TO PERSONS
Read Instructions
The Owner’s Manualshould be read and understood
before operation of your unit. Please, save these instructions for future reference.
Packaging
Keep the box and packaging materials, in case the unit
needs to be returned for service.
Warning
When using electric products, basic precautions should
always be followed, including the following:
Power Sources
Your unit should be connected to a power source only of the voltage
specified in the owners manual or as marked on the unit. This unit has a
polarized plug. Do not use with an extension cord or receptacle unless
the plug can be fully inserted. Precautions should be taken so that the
grounding scheme on the unit is not defeated.
Hazards
Do not place this product on an unstable cart, stand, tripod, bracket or
table. The product may fall, causing serious personal injury and serious
damage to the product. Use only with cart, stand, tripod, bracket, or
table recommended by the manufacturer or sold with the product.
Follow the manufacturer’s instructions when installing the product and
use mounting accessories recommended by the manufacturer.
The apparatus should not be exposed to dripping or splashing water;
no objects filled with liquids should be placed on the apparatus.
Terminals marked with the “lightning bolt” are hazardous live; the
external wiring connected to these terminals require installation by an
instructed person or the use of ready made leads or cords.
Ensure that proper ventilation is provided around the appliance.
No naked flame sources, such as lighted candles, should be
placed on the apparatus.
Power Cord
The AC supply cord should be routed so that it is unlikely that it will be
damaged. If the AC supply cord is damaged DO NOT OPERATE THE UNIT.
Service
The unit should be serviced only by qualified service personnel.
AVIS:
AFIN DE REDUIRE LES RISQUE DE CHOC ELECTRIQUE,
N’ENLEVEZ PAS LE COUVERT (OU LE PANNEAU ARRIERE)
NE CONTIENT AUCUNE PIECE
REPARABLE PAR L’UTILISATEUR.
CONSULTEZ UN TECHNICIEN QUALIFIE
POUR L’ENTRETIENT
INSTRUCTIONS RELATIVES AU RISQUE
DE FEU, CHOC ÉLECTRIQUE, OU
BLESSURES AUX PERSONNES
Veuillez Lire le Manuel
Il contient des informations qui devraient êtres comprises
avant l’opération de votre appareil. Conservez S.V.P. ces
instructions pour consultations ultérieures.
Emballage
Conservez la boite au cas ou l’appareil devait être
retourner pour réparation.
Attention:
Lors de l’utilisation de produits électrique, assurezvous d’adhérer à des précautions de bases incluant
celle qui suivent:
Alimentation
L’appareil ne doit être branché qu’à une source d’alimentation
correspondant au voltage spécifié dans le manuel ou tel qu’indiqué sur
l’appareil. Cet appareil est équipé d’une prise d’alimentation polarisée.
Ne pas utiliser cet appareil avec un cordon de raccordement à moins
qu’il soit possible d’insérer complètement les trois lames. Des
précautions doivent êtres prises afin d’eviter que le système de mise à
la terre de l’appareil ne soit désengagé.
Risque
Ne pas placer cet appareil sur un chariot, un support, un trépied ou une
table instables. L’appareil pourrait tomber et blesser quelqu’un ou subir
des dommages importants. Utiliser seulement un chariot, un support,
un trépied ou une table recommandés par le fabricant ou vendus avec
le produit. Suivre les instructions du fabricant pour installer l’appareil et
utiliser les accessoires recommandés par le fabricant.
Il convient de ne pas placer sur l’appareil de sources de flammes
nues, telles que des bougies allumées.
L’appeil ne doit pas être exposé à des égouttements d’eau ou des
éclaboussures et qu’aucun objet rempli de liquide tel que des vases
ne doit être placé sur l’appareil.
Assurez que lappareil est fourni de la propre ventilation.
Les dispositifs marqués d’une symbole “d’éclair” sont des parties
dangereuses au toucher et que les câblages extérieurs connectés à
ces dispositifs de connection extérieure doivent être effectivés par un
opérateur formé ou en utilisant des cordons déjà préparés.
Cordon d’Alimentation
Évitez d’endommager le cordon d’alimentation. N’UTILISEZ PAS
L’APPAREIL si le cordon d’alimentation est endommagé.
Service
Consultez un technicien qualifié pour l’entretien de votre appareil.
NX550P Active Full Range Loudspeaker
Using the popular nx20 as a base, adding 550 Watts of bi-amped power and topping-it-off
with advanced signal processing, the NX550P is destined to set the new standard for active
loudspeakers. The woofer amplifier, or low frequency amplifier, amp delivers over 450 Watts to
the 12 inch neodymium woofer. To reduce the overall weight of the amplifier section, the woofer
amplifier uses Class D switching technology. A 100 Watt, two-tier linear technology, Class H amplifier
drives the 1 inch diaphragm horn driver. This allows the horn to produce clean transients while
keeping up with the high output of the woofer. Two-tier amplifier technology isn’t typically seen
in a product like this, however we found the advantages (lower weight, more efficiency, higher
headroom and lower operating temperature) made it a perfect choice for powering the top end.
This combination of
Class D and Class H
amplifier technologies
helps keep distortion
to a minimum while
reducing the need
for massive heat
dissipation. In fact, to
a level low enough
to eliminate the need
for heavy heatsinks.
The advantage of this
unique combination
of two-tier and Class
D amplification has
reduced extraneous
heat to the point that
NX550P’s can easily be
used in any orientation (close
to walls, floors and in close arrays
with multiple cabinets). Competitive
active loudspeakers, with large
finned heatsinks, need to be operated
vertically and with plenty of clearance (to
ensure proper heat dissipation and ventilation).
Since you have more versatility in regards to
the orientation of the enclosure, the NX550P
becomes ideal for flying in large clusters and in
point-source concert sound systems. Yorkville’s
designers took extra care making sure that in
tight clusters overheating would not be an issue.
Taking advantage of the design process,
an opportunity was taken to tweak the
electronics for maximum overall speaker
performance and protection. Solutions were
borrowed from our high-end TX-Series PA
systems. The limiters used, at the input and
crossover stages, are a complex combination
of gain reduction and sweeping filters. If
the NX550P is pushed to its maximum input/
output levels, advanced filtering begins
rolling off unnecessary subsonic frequencies.
The processing also protects individual
components ensuring failure free operation
(even after long term operation at close
to maximum output levels). The filter has a
remarkable response time, less then 70ms,
allowing the system to constantly be re-tuning
itself. This makes sure the output is as clean,
as loud and as clear as possible at any
given moment. This is achieved without
negatively affecting the overall sonic
quality of the cabinet. This ensures that the
essential part of the mix, like the vocals
or solo instruments, come out clean and
clear when the cabinet
is being operated
at the extremes of
power and woofer
excursion. Extremely
fast and accurate
limiting is in
place to protect
the speaker
components.
As a bonus, the
NX550P has a built
in mixer! This allows
the loudspeaker to
be used directly with a
microphone and/or line source. The loop
output allows additional active cabinets to
be driven from one source (up to a maximum
of 50 NX550Ps). If desired, you can combine a
pair of the NX550P’s using the mixer inputs on
each cabinet and coupling the loop outputs.
In this example you would have an ideal
presentation system. Two microphone inputs,
two line inputs (optimized for CD, Cassette or
laptop computer audio source), complete
within two speaker cabinets. As mentioned,
our active cabinets can be linked together,
the limitation is that only three ‘mixers’ can
be active at any one time. This allows three
Mic sources and six line sources available
in an array of three or more cabinets). The
microphone inputs have equalization and
high pass filtering designed appropriately for
vocal applications. The trim control allows
looped cabinets to be individually adjusted in
level. This is invaluable in applications where
large numbers of cabinets are used such as
in clusters or in trade show applications (or
when NX550P’s are used as repeater cabinets
or for side fill). The 100 Hz high pass filters allow
the NX550P to be used more efficiently with
any active subwoofer.
1
Features:
MIC
LINE / CD
INPUT
INPUT
OUTPUT
OUTPUT
BAL
LINK
MIX ER
CLIP
LIMI T
PWR
NX550P
LE VE L
MIC
LINE
/ CD
100
TREBLE BASS
1212
dB
12
12
dB
100
6
8
dB
LF ROLLOFF
0
100H z60Hz
MI XE R
OFF
ON
• Ultra-clear reproduction throughout the
whole bandwidth
• High efficiency, high tech, 550 Watt Biamped 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 fullrange 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.
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.
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).
2
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.
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 NX550P 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 NX550P mixers
disabled on the additional cabinets.
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.
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.
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.
Green PWR LED
Illumination indicates that AC power is on and
the fuse is functioning.
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 NX550P) to reduce clipping.
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.
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 NX550P, 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 NX550P does not
connect the AC power ground directly to
the input signal ground. This will eliminate
most ground problems.
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.
3
Specifications
System Type
2-Way
Active or Passive
Active
Program Power (Watts)
550
Biampable
Self Powered
Biamp Operation Only
Yes
Max SPL (dB)
124
Frequency Response (Hz +/- 3db)
45 - 18k
Crossover Frequency (Hz)
2300
Driver Configuration
12 inch / 1 inch
HF Driver(s)
1 inch Throat, Ceramic Magnet, 1 inch Mylar voicecoil
HF Program Power (Watts)
100
HF Dispersion (°H x °V)
80 x 50
LF Driver(s)
12 inch Neodymium Magnet 3 inch voicecoil
LF Program Power(Watts)
450
Total Power (Watts)
550
HF Amplifier Type
Two Tier Class H
LF Amplifier Type
Class D
Power Cable
Yes
Power Switch
Yes
Inputs
7
Inputs - 1/4" Jacks
2 (line input) 2 (link in/out)
Inputs - XLR
1 (mic) 2 (line in/out)
Input Sensitivity (Vrms Sine)
+4dBv / 1.23V
Mixer on/off switch
Mic Gain
Line/CD Gain
Treble/Bass Tweak
Level Controls
+/- 6dB Main Volume
EQ Controls
100Hz HP Filter (LF Rolloff)
Limiter
Yes
LED Indicators
Power/Clip/Limit
Feet
Yes
Flying Hardware
2 (Top), 2 (Bottom), 1 (Pullback)
Optional Flying Hardware
NX Flyware
Bar Handles
1 (Side)
Pole Mount Adapter (1 3/8"-3.5cm)
Yes
Enclosure Materials
Variable Density Molded Composite
Grille
Perforated Metal
Dimensions (DWH xbackW, inches)
13.25 x 16.5 x 27.25 x 8
Dimensions (DWH xbackW, cm)
0.33 x 0.42 x 0.69 x 0.2
Weight (lbs/kg)
47 / 21.4
Mixer Controls
P
550 WATT POWERED LOUDSPEAKER ENCLOSURE
550
4
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