XCELLENCE SERIES
X208 / X215W / X218W Systems
Pol. Ind. Norte - Perpinyà, 25
08226 TERRASSA (Barcelona-SPAIN)
Copyright © 2012 info@master-audio.com
All rights reserved www.master-audio.com
Sep 12
User’s manual
ENGLISH
Safety Instructions
1. All safety instructions must be read before using this device.
2. The exclamation mark in the triangle indicates internal components which if
replaced can affect safety.
3. The lightning symbol within the triangle indicates the presence of dangerous
uninsulated voltages.
4. This device must not be exposed to rain or humidity.
5. Only clean the device with a dry cloth.
6. Do not situate the equipment where its ventilation system might be interfered with.
7. Do not install the device near heat sources such as radiators, heaters or other
heat-emitting elements.
8. The equipment must be repaired by qualified technical service personnel when:
A. The mains supply cable is damaged, or
B. Any object or liquid has damaged the device; or
C. The equipment does not function normally or correctly; or
D. The equipment has been exposed to the rain; or
E. The chassis is damaged
9. Disconnect the device in the case of electric storms or during long periods of
disuse.
10. Never hang the equipment by its handle.
11. Only use manufacturer recommended accessories.
CAUTION
RISK OF ELECTRIC SHOCK
DON’T OPEN
To reduce the risk of fire or electric shock do
not expose this equipment to rain or moisture
WARNING:
Master Audio
Xcellence Line Array Series 208.Ver 1.2 Sep 12
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1. INTRODUCTION
1.1. General product information
Master Audio thank you for the trust placed in our Xcellence loudspeaker systems.
The Line Array Xcellence models combine the benefits of their high quality sound
transducers, the convenience of a self-powered system and the flexibility of the DSP
(digital system processing) for cabinet control.
More than 38 years’ experience in amplifier and acoustic cabinet design using the
highest technology and components come together to give you a product ideal for a
multitude of applications, specially those which require high levels of sound pressure
and a control of vertical coverage. Stadiums, theatres or big events will become the
perfect places for its use.
We suggest you read the following information with attention, assured that it will be of
maximum use in helping you to achieve the best results and optimum performance.
1.2. What is a line array?
The trend in sound reinforcement has been to increase both the sound pressure level
(SPL) and the size of the audience to be covered. This leads to an increase in the
number of cabinets and, as a result of this, an increase in the total size and weight.
A line array is a group of independent sound sources which are vertically stacked in
order to transform the spherical wavefronts generated by individual sources into a
single flat wavefront.
Fig.1. Wavefield interference for different wavefronts.
To carry out effectively arraying individual sound sources the system must follow the
acoustic coupling conditions based on the wavelength, the shape of each source, the
surface area of each transducer and the relative source separation.
An assembly of individual sound sources arrayed with regular separation between the
sources on a plane or curved continuous surface is equivalent to a single sound
source having the same dimensions as the total assembly if the following conditions
are fulfilled:
1) The step of source separation, defined as the distance between the acoustic
centres of the individual sources, is smaller than half the wavelength over the
bandwidth of operation.
Master Audio
Xcellence Line Array Series 208.Ver 1.2 Sep 12
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d<= /2
It is not difficult to fulfil this first condition for the low and mid frequencies. For example,
two 7" loudspeakers that are separated by 17 cm will reproduce a cylindrical wave up
to 1015 Hz.
This condition is difficult to be fulfilled for the high frequencies, as their wavelengths
are too small to make the adjacent acoustic centres any smaller than /2. Here comes
the second "arrayability" criterion.
2) The wavefronts generated by the individual sources are planar and the combined
surface area of the sources fills at least 80% of the total target surface area:
H1·W + H2·W+.....+Hn·W >=0.8·H·W
This is achieved by using waveguides, which are coupled to the compression drivers
output. We achieve flat wavefronts with a constant phase. By vertically assembling
these waveguides we fulfil the second criterion of line array construction.
Fig.2. Second criterion of "arrayability"
3) The deviation from a flat wavefront must be less than λ/4 at the highest operating
frequency (this corresponds to less than 5 mm curvature at 16kHz).
This third condition can be explained through our property waveguide. Thanks to some
complex mathematical calculations we have obtained a component which is able to
adapt the circular section of the compression driver to a rectangular section, getting
on-phase waves at the end of the guide. This flat wavefront is ideal for vertical
configurations.
Master Audio
Xcellence Line Array Series 208.Ver 1.2 Sep 12
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Fig.3. High frequency waveguide
Sound engineers use line arrays to obtain narrow directivities on the vertical plane. For
configurations with many cabinets (big height) and at high frequencies it is not unusual
to achieve narrow angles- in some cases they may be grade fractions. This can be
useful in venues where both a high sound pressure level and long throw are required;
nevertheless, this means less coverage of the audience area.
It is sometimes useful to achieve an asymmetrical coverage pattern on the vertical
plane, which can be obtained by aiming some of the cabinets through their hinging
points. We are now ready to define the last two criteria of "arrayability".
4) For curved arrays, the tilt angles should vary in inverse proportion to the listener
distance (this is geometrically equivalent to shaping variable curvature arrays to
provide equal spacing of individual element impact zones).
5) There are limits given the vertical size of each cabinet and their relative tilt angles.
In our case the maximum tilt angle (between cabinets) is 10º.
Fig.4. Tilt angle between cabinets (10º maximum)
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Xcellence Line Array Series 208.Ver 1.2 Sep 12
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1.3. Fresnel Region (Near Field) and Fraunhofer Region (Far Field)
As our system is able to fulfil the previous conditions it will produce cylindrical waves
to a maximum frequency. The wave will be flat up to a certain distance where it will
start to become spherical (depending on the frequency and the size of the array).
The limit distance between the zone of cylindrical waves (Fresnel) and spherical
waves (Fraunhofer) can be calculated through the following formula
2
2
3
1
1
2
3
Hf
fHdc
where
dc= limit distance between near field and far field (in metres)
H = height of the array (in metres)
f= frequency (in kHz)
In the near field region (Fresnel), the wavefront is cylindrical and waves only expand
on the horizontal plane (110º in X-208). The height of the wavefront is, in this case,
the total height of the array.
In the far field region (Fraunhofer), the wavefront is spherical and expands both on
the horizontal and vertical planes. The horizontal coverage is 110º and the vertical
coverage is defined by the frequency and the height of the array.
Fig.5. Limits of Fresnel-Fraunhofer Regions
We can create a chart with some of the basic configurations and their performance
regarding wave propagation.
Master Audio
Xcellence Line Array Series 208.Ver 1.2 Sep 12
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Frec
(Hz)4xX-208
dc(m)
8x
X-208
dc(m)
12x
X-208
dc(m)
16x
X-208
dc(m)
100 Esférica Esférica Esférica 1.3
125 Esférica Esférica 0.7 2.2
250 Esférica 1.1 3 5.6
500 0.5 2.8 6.6 11.8
1k 1.4 5.9 13.3 23.8
2k 2.9 11.9 26.8 47.9
4k 5.9 23.9 54 95.9
8k 11.9 47.9 107.9 191.9
10k 14.9 59.9 134.9 239.8
Fig.6. d
c
Calculation
An 8-cabinet array has a near field extending to 12 metres at 2kHz. Beyond this
distance the wavefront will be spherical.
In the first zone (Fresnel), sound pressure loss is only 3 dB per doubling of distance,
whereas in the second zone (Fraunhofer) the loss is 6 dB. In long throw and high
SPL configurations it is very important to produce cylindrical waves.
Fig.7.Cylindrical wave (A) vs Spherical wave (B)
(A): -3 dB / doubling of distance
(B): -6 dB / doubling of distance
1.4. Features and appearance
X-208A
- Self-powered acoustic system.
- 2400W amplifier for low-mid range.
- 600W amplifier for mid-high range.
- 24-bit AD/DA converters with 112dB dynamic range, 96kHz sampling rate.
- DSP Controls (parametrics, delay, volume and limiters).
- Self amplifier diagnostics: output power, temperature, clipping.
- Ethernet connectivity.
- Overvoltage protection (>250V-400V).
Master Audio
Xcellence Line Array Series 208.Ver 1.2 Sep 12
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- Two 8” woofers in neodymium (2.5” voice coil).
- Two 1.7” voice coil diameter, 1” exit PEN diaphragm compression drivers.
- High frequency planar waveguide design.
- 110º horizontal directivity.
- Birch plywood construction.
- Black textured paint finish: totally ecological.
- Frontal steel grilles with acoustically transparent grey cloth.
X-208P
- Passive acoustic system.
- Two 8” woofers in neodymium (2.5” voice coil).
- Two 1.7” voice coil diameter, 1” exit PEN diaphragm compression drivers.
- High frequency planar waveguide design.
- 110º horizontal directivity.
- Birch plywood construction.
- Black textured paint finish: totally ecological.
- Frontal steel grilles with acoustically transparent grey cloth.
X-215W Subwoofer
- Self-powered cabinet.
- 2400W amplifier.
- 24-bit AD/DA converters with 112dB dynamic range, 96kHz sampling rate.
- DSP Controls (parametrics, delay, volume and limiters).
- Self amplifier diagnostics: output power, temperature, clipping.
- Ethernet connectivity.
- Overvoltage protection (>250V-400V).
- Two 15” long-excursion woofers in neodymium, 4” voice coil and demodulation
rings to reduce distortion and the transitory response.
- Birch plywood construction.
- Black textured paint finish: totally ecological.
- Frontal steel grilles with acoustically transparent grey cloth.
X-218W Subwoofer
- Self-powered.
- 2400W amplifier.
- 24-bit AD/DA converters with 112dB dynamic range, 96kHz sampling rate.
- DSP Controls (parametrics, delay, volume and limiters).
- Self amplifier diagnostics: output power, temperature, clipping.
- Ethernet connectivity.
- Overvoltage protection (>250V-400V).
- Two 18” long-excursion woofers in neodymium, 4” voice coil and demodulation
rings to reduce distortion and the transitory response.
- Birch plywood construction.
- Black textured paint finish: totally ecological.
- Frontal steel grilles with acoustically transparent grey cloth.
Master Audio
Xcellence Line Array Series 208.Ver 1.2 Sep 12
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2. X-208A/P FEATURES
The X-208A cabinet includes 2400W bi-amplification for the low-mid range woofers,
600W for the high range compression drivers and digital signal control by DSP. The
manufacturer presets make it easy, flexible and user-friendly.
The basic set is composed of three units X-208P (passive) and one unit of X-208A
(active). This last model includes all the necessary electronics to feed the X-208P
units.
The result is a clean, high quality sound at full power.
2.1. Technical description
The X-208A cabinet comes with DSP control, full range sound delivery thanks to its
direct radiation transducers and acoustic bass reflex cabinet. As a full range system,
its usable bandwidth is 78Hz-18kHz (-10dB).
It has 3000W continuous amplification (2400W + 600W), thermal protection, short
circuit protection at the output, maximum power limiters on each channel, and
protection against mains overvoltage. The DSP includes some presets which can be
selected either accessing the cabinet’s rear control panel or via the computer with
Ethernet connection.
The X-208A cabinets are connected using the XLR balanced connector. Mains supply
is through PowerCon at 230V.
Both X-208A and X-208P are built in birch plywood which has a high resistance
against vibrations and humidity.
High resistance weatherproof bi-component paint. The front face is protected by two
1,5 mm thick steel grilles with acoustically transparent grey cloth.
They include in-built black painted stainless steel rigging hardware and handles for an
easy and comfortable transport.
2.2. Presets
The X-208A includes some manufacturer presets for different types of application.
The DSP system can also store up to 23 customer’s presets, depending on user
requirements.
The presets in the X-208 are based on the number of boxes, the type of configuration
(flat, standard arc, maximum arc) and frequency range (full range or use with
subwoofer)
[Nº of BOXES] _ [CONFIGURATION] _ [FREQUENCY RANGE]
Master Audio
Xcellence Line Array Series 208.Ver 1.2 Sep 12
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[Nº of BOXES]
2 : 2 boxes
4 : 4 boxes – 6 boxes
8 : 8 or more boxes
[CONFIGURATION]
FLAT: Flat boxes at 0º (longthrow application)
ARC-: Standard curved boxes, i.e. 0º/1º/3º/6º or similar (for mid field application).
ARC+: Maximum curved boxes, i.e. 5º or more degrees between cabinets (for
nearfield application)
[FREQUENCY RANGE]
FR: Full-range. Frequency response down to 78Hz
SW: Frequency response down to 90Hz (for subwoofer use)
Example:
[4FLAT_FR]: 4 boxes / flat configuration / full-range
STANDARD CONFIGURATIONS
1) 4 x X-208 FLAT without subwoofers
P1 [4FLAT_FR]
2) 4 x X-208 FLAT with subwoofers
P2 [4FLAT_SW]
[LPF90/LPF110/etc..]
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Xcellence Line Array Series 208.Ver 1.2 Sep 12
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3) 4 x X-208 STANDARD CURVED without subwoofers
P3 [4ARC-_FR]
4) 4 x X-208 STANDARD CURVED with subwoofers
P4 [4ARC-_SW]
[LPF90/LPF110/etc..]
5) 4 x X-208 MAXIMUM CURVED 5º- 10º without subwoofers
P5 [4ARC+_FR]
6) 4 x X-208 MAXIMUM CURVED 5º- 10º with subwoofers
P6 [4ARC+_SW]
[LPF90/LPF110/etc..]
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Xcellence Line Array Series 208.Ver 1.2 Sep 12
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7) 4 x X-208 FLAT + 4 x X-208 STANDARD CURVED without subwoofers
P7 [8FLAT_FR]
P9 [8ARC-_FR]
8) 4 x X-208 FLAT + 4 x X-208 STANDARD CURVED with subwoofers
P8 [8FLAT_SW]
P10 [8ARC-_SW]
[LPF90/LPF110/etc..]
9) 4 x X-208 FLAT + 4 x X-208 MAXIMUM CURVED 5º- 10º without subwoofers
P7 [8FLAT_FR]
P11 [8ARC+_FR]
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Xcellence Line Array Series 208.Ver 1.2 Sep 12
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10) 4 x X-208 FLAT + 4 x X-208 MAXIMUM CURVED 5º- 10º with subwoofers
P8 [8FLAT_SW]
P12 [8ARC+_SW]
[LPF90/LPF110/etc..
]
11) 2 x X-208 STANDARD CURVED 0º- 5º without subwoofers
P13 [2ARC-_FR]
12) 2 x X-208 STANDARD CURVED 0º- 5º with subwoofers
P14 [2ARC-_SW]
[LPF90/LPF110/etc..]
13) 2 x X-208 MAXIMUM CURVED 6º- 10º without subwoofers
P15 [2ARC+_FR]
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Xcellence Line Array Series 208.Ver 1.2 Sep 12
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14) 2 x X-208 MAXIMUM CURVED 6º- 10º with subwoofers
P16 [2ARC+_SW]
[LPF90/LPF110/etc..]
2.3. Control and Connection panel
Fig.9.
X-208A control and connection panel
The X-208A control panel contains the following elements:
A) LCD: Displays basic information about the DSP Status
B) KEYPAD: Allows the user to perform basic operations on the DSP such as IP
address setting, Preset selection, etc.
C) STATUS LEDS: Report a special event happening in the system
Protect: (Red) A fault condition is being reported by the amplifier. If this LED is
constantly lit even after resetting the device, please contact the technical
service.
ABCDEFGHI
J
Master Audio
Xcellence Line Array Series 208.Ver 1.2 Sep 12
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Standby: (Orange) This led is lit when the equipment is set in Low Power
Consumption mode. This mode can only be set through the PC connection.
Mute: (Orange) The system is muted (amplifiers are disabled). The system
can be muted from the PC remote control or from the keypad.
IMPORTANT: When the amplifier is in MUTE, the PROTECT LED will be also lit to
show that the amplifier is disabled. Also when the system is waking up from the
STANDBY mode, the PROTECT led will be lit for a few seconds. Under these
circumstances the PROTECT LED is reporting that the amplifier is disabled, but not a
fault condition.
D) SIGNAL INPUT LEDS: Monitor the signal arriving at the module input.
Input: Signal is present at the input. Nominal input level is +8dBu (2Vrms).
>8 Overload: The input signal exceeds +14dBu (4Vrms), so it will be
compressed. Avoid the continuous lighting of this led in order to preserve the
dynamic range of the audio signal.
E) OUPUT LEDS: Show the amplifier output level, both for Low and High channels.
-24dB: The amplifier is delivering output power at -24dB of its maximum power
-12dB: The amplifier is delivering output power at -12dB of its maximum power
Clip: The amplifier is delivering its maximum output power
The connection panel has the following parts:
F) SLAVE OUTPUT FOR X-208P
4P-Speakon connector used to feed up to three slaves X-208P Line Array Element. In
order to assure proper operation always follow these instructions:
Link up to THREE units of X-208P with each X-208A.
Do not connect a loudspeaker different than X-208P to this output.
Do not change or manipulate this connector.
Always follow the polarity if the 4-pole connector
o 1+/1-: LF+/LF-
o 2+/2-: HF+/HF-
Misusing the slave output for X-208P may lead to serious damage for all involved
equipment, and will not be covered by the Warranty.
G) NETWORK: Computer connection through Ethernet protocol. Two 8-pin RJ45 /
EtherCon® compatible connectors with an internal switch allow the connection of
several units in daisy-chain. Please refer to Master Audio DSPStudio Quick Installation
Guide for more information on the remote connection.
H) BALANCED INPUT/LINK:
XLR-3 Female balanced signal connector for signal input.
XLR-3 Male connector for parallel connection of various cabinets with the same input
signal.
IMPORTANT: Please always use balanced microphone cable with the following pin
assignment:
1= Shield (Ground) 2= Live (+) 3= Return (-)
Master Audio
Xcellence Line Array Series 208.Ver 1.2 Sep 12
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I) AC INPUT/OVERVOLTAGE PROTECTION: These leds show the status of the AC
mains supply.
ON: (Blue) When lit, the equipment is ON and the AC input level is within the
permitted range (200 to 250 VAC).
STANDBY: (Orange) This led is lit when the equipment is sensing the AC
voltage at the input. At power-up this led will lit for a second while the systems
checks for the input voltage.
>250V OVERVOLTAGE PROTECTION: (Red) When activated, the AC
voltage is permanently out of the permitted range of the equipment, so it will
remain under protection until this condition is solved. Revise your connections
and mains power installation and consider that other equipment connected to
this line may have been damaged.
J) AC MAINS INPUT/LINK: Mains supply connection via PowerCon.
Blue connector for AC in.
Grey connector to feed other units in parallel. Linking up to 4 units of X-208A is
possible, provided that a quality cable of a minimum section of 3x2.5mm
2
is
used. Connecting more than 4 units in parallel may lead to a voltage drop in the
cable that will reduce the equipment performance.
Always use mains power cable supplied by manufacturer.
Never connect the Xcellence Line Array cabinets to an unearthed mains
supply or by using an unearthed mains cable.
2.4. Dimensions
Fig.10. X-208 cabinet. External dimensions
Master Audio
Xcellence Line Array Series 208.Ver 1.2 Sep 12
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3. X-215W SUBWOOFER
The X-215W cabinet is ideal for bass reinforcement. It includes 2400W amplification
for the woofers and digital signal control by DSP. The manufacturer presets
(LPF90+3, LPF90+6, LPF100+3, LPF100+6, LPF110+3, LPF110+6, LPF120+3,
LPF120+6, CARDIOID) make it easy, flexible and user-friendly.
The 15” neodymium woofers used, thanks to their exclusive magnetic design,
combine excellent bass frequency response, high performance and low distortion.
These features are mainly due to the presence of demodulation rings which
drastically reduce the inter-modulation and third order distortion and considerably
improve the transitory response. There is excellent heat dissipation due to the
external positioning of the magnet set. Without any doubt one of the finest bass
transducers currently available.
The result is a clean, high quality sound.
3.1. Technical description
The X-215W cabinet comes with DSP control, with acoustic bandpass cabinet. As a
bass reinforcement system, its usable bandwidth is 32Hz-120Hz (-10dB).
It has 2400W continuous amplification, thermal protection, short circuit protection at
the output, maximum power limiter, and protection against overvoltage. The DSP
includes some presets which can be selected either accessing the cabinet’s rear
control panel or via the computer with Ethernet connection. The LPF90+3 preset
means low pass filter at 90Hz and +3dB boost at 50Hz; LPF90+6 means low pass
filter at 90Hz and +6dB boost at 50Hz; LPF100+3 means low pass filter at 100Hz and
+3dB boost at 50Hz; LPF100+6 means low pass filter at 100Hz and +6dB boost at
50Hz; LPF110+3 means low pass filter at 110Hz and +3dB boost at 50Hz; LPF110+6
means low pass filter at 110Hz and +6dB boost at 50Hz; LPF120+3 means low pass
filter at 120Hz and +3dB boost at 50Hz; LPF120+6 means low pass filter at 120Hz
and +6dB boost at 50Hz and CARDIOID means cardioid polar pattern when used in
combination with two other X-215W subwoofers.
The X-215W is connected using the XLR balanced connectors. Mains supply is
through PowerCon at 230V.
High resistance weatherproof bi-component paint. The front face is protected by two
1.5 mm thick steel grilles with acoustically transparent grey cloth.
It includes in-built black painted stainless steel rigging hardware and handles for an
easy and comfortable transport.
Master Audio
Xcellence Line Array Series 208.Ver 1.2 Sep 12
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Fig.11. X-215W cabinet. External dimensions
3.2. Presets
The X-215W includes some manufacturer presets for different types of application.
The DSP system can also store up to 23 customer’s presets, depending on user
requirements.
P1-LPF90+3
90Hz
low pass filter
with +3dB boost
at 50Hz
P2-LPF90+6
90Hz
low pass filter
with +6dB boost
at 50Hz
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Xcellence Line Array Series 208.Ver 1.2 Sep 12
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P3-LPF100+3
100Hz
low pass filter
with +3dB boost
at 50Hz
P4-LPF100+6
100Hz
low pass filter
with +6dB boost
at 50Hz
P5-LPF110+3
110Hz
low pass filter
with +3dB boost
at 50Hz
P6-LPF110+6
110Hz
low pass filter
with +6dB boost
at 50Hz
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Xcellence Line Array Series 208.Ver 1.2 Sep 12
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P7-LPF120+3
120Hz
low pass filter
with +3dB boost
at 50Hz
P8-LPF120+6
120Hz
low pass filter
with +6dB boost
at 50Hz
P9-CARDIOID
(Cardioid
polar pattern)
Fig.12. X-215W PRESET options
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Xcellence Line Array Series 208.Ver 1.2 Sep 12
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3.3. Control and connection panel
Fig.13.
X-215W control and connection panel
The X-215W control panel contains the following elements:
A) LCD: Displays basic information about the DSP Status
B) KEYPAD: Allows the user to perform basic operations on the DSP such as IP
address setting, Preset selection, etc.
C) STATUS LEDS: Report a special event happening in the system
Protect: (Red) A fault condition is being reported by the amplifier. If this LED is
constantly lit even after resetting the device, please contact the technical
service.
Standby: (Orange) This led is lit when the equipment is set in Low Power
Consumption mode. This mode can only be set through the PC connection.
Mute: (Orange) The system is muted (amplifiers are disabled). The system
can be muted from the PC remote control or from the keypad.
ABCDEFGHI
Master Audio
Xcellence Line Array Series 208.Ver 1.2 Sep 12
22
IMPORTANT: When the amplifier is in MUTE, the PROTECT LED will be also lit to
show that the amplifier is disabled. Also when the system is waking up from the
STANDBY mode, the PROTECT led will be lit for a few seconds. Under these
circumstances the PROTECT LED is reporting that the amplifier is disabled, but not a
fault condition.
D) SIGNAL INPUT LEDS: Monitor the signal arriving at the module input.
Input: Signal is present at the input. Nominal input level is +8dBu (2Vrms).
OVLD: The input signal exceeds +14dBu (4Vrms), so it will be compressed.
Avoid the continuous lighting of this led in order to preserve the dynamic range
of the audio signal.
E) OUPUT LEDS: Show the amplifier output level
-24dB: The amplifier is delivering output power at -24dB of its maximum power
-12dB: The amplifier is delivering output power at -12dB of its maximum power
Clip: The amplifier is delivering its maximum output power
The connection panel has the following parts:
F) NETWORK: Computer connection through Ethernet protocol. Two 8-pin RJ45 /
EtherCon® compatible connectors with an internal switch allow the connection of
several units in daisy-chain. Please refer to Master Audio DSPStudio Quick Installation
Guide for more information on the remote connection.
G) BALANCED INPUT/LINK:
XLR-3 Female balanced signal connector for signal input.
XLR-3 Male connector for parallel connection of various cabinets with the same input
signal.
IMPORTANT: Please always use balanced microphone cable with the following pin
assignment:
1= Shield (Ground) 2= Live (+) 3= Return (-)
H) AC INPUT/OVERVOLTAGE PROTECTION: These leds show the status of the
AC mains supply.
ON: (Blue) When lit, the equipment is ON and the AC input level is within the
permitted range (200 to 250 VAC).
STANDBY: (Orange) This led is lit when the equipment is sensing the AC
voltage at the input. At power-up this led will lit for a second while the systems
checks for the input voltage.
OVERVOLTAGE PROTECTION: (Red) When activated, the AC voltage is
permanently out of the permitted range of the equipment (>250VAC), so it will
remain under protection until this condition is solved. Revise your connections
and mains power installation and consider that other equipment connected to
this line may have been damaged.
I) AC MAINS INPUT/LINK: Mains supply connection via PowerCon.
Blue connector for AC in.
Grey connector to feed other units in parallel. Linking up to 2 units of X-215W is
possible, provided that a quality cable of a minimum section of 3x2,5 mm2 is
used. Connecting more than 2 units in parallel may lead to a voltage drop in the
cable that will reduce the equipment performance.
Master Audio
Xcellence Line Array Series 208.Ver 1.2 Sep 12
23
4. X-218W SUBWOOFER
The X-218W cabinet is ideal for bass reinforcement. It includes 2400W amplification
for the woofers and digital signal control by DSP. The manufacturer presets (LPF90,
LPF90+3, LPF110, LPF110+3, LPF80, LPF80+3, CARDIOID) make it easy, flexible
and user-friendly.
The 18” neodymium woofers used, thanks to their exclusive magnetic design,
combine excellent bass frequency response, high performance and low distortion.
These features are mainly due to the presence of demodulation rings which
drastically reduce the inter-modulation and third order distortion and considerably
improve the transitory response. There is excellent heat dissipation due to the
external positioning of the magnet set. Without any doubt one of the finest bass
transducers currently available. The result is a clean, high quality sound.
4.1. Technical description
The X-218W cabinet comes with DSP control, with direct radiation bass reflex
acoustic cabinet. As a bass reinforcement system, its usable bandwidth is 30Hz100Hz (-10dB).
It has 2400W continuous amplification, thermal protection, anti-short circuit protection
at the output, maximum power limiter, and protection against overvoltage. The DSP
includes some presets which can be selected either accessing the cabinet’s rear
control panel or via the computer with Ethernet connection. The LPF90 preset means
low pass filter at 90Hz; LPF90+3 means low pass filter at 90Hz with +3dB boost at
42Hz; LPF110 means low pass filter at 110Hz, LPF110+3 means low pass filter at
110Hz with +3dB boost at 42Hz, LPF80 preset means low pass filter at 80Hz;
LPF80+3 means low pass filter at 80Hz with +3dB boost at 42Hz and CARDIOID
means cardioid polar pattern when used in combination with two other X-218W
subwoofers. The X-218W is connected using the XLR balanced connectors. Mains
supply is through PowerCon at 230V.
Built in birch plywood, which has a high resistance to vibrations and humidity. High
resistance weatherproof bi-component paint. The front face is protected by two 1.5
mm thick steel grille with acoustically transparent grey cloth.
Fig.14. X-218W cabinet. External dimensions
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4.2. Presets
The X-218W includes some manufacturer presets for different types of application.
The DSP system can also store up to 23 customer’s presets, depending on user
requirements.
P1-LPF90
90Hz
low pass filter
P2-LPF90+3
90Hz
low pass filter,
+3dB boost
at 42Hz
P3-LPF110
110Hz
low pass filter
P4-LPF110+3
110Hz
low pass filter,
+3dB boost
at 42Hz
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P5-CARDIOID
(Cardioid
polar pattern)
P6-LPF80
80Hz
low pass filter
P7-LPF80+3
80Hz
low pass filter,
+3dB boost
at 42Hz
Fig.15. X-218W PRESET options
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4.3. Control and connection Panel
Fig.16. X-218W connection panel
The X-218W control panel contains the following elements:
A) LCD: Displays basic information about the DSP Status
B) KEYPAD: Allows the user to perform basic operations on the DSP such as IP
address setting, Preset selection, etc.
C) STATUS LEDS: Report a special event happening in the system
Protect: (Red) A fault condition is being reported by the amplifier. If this LED is
constantly lit even after resetting the device, please contact the technical
service.
Standby: (Orange) This led is lit when the equipment is set in Low Power
Consumption mode. This mode can only be set through the PC connection.
Mute: (Orange) The system is muted (amplifiers are disabled). The system
can be muted from the PC remote control or from the keypad.
ABCDEFGHI
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IMPORTANT: When the amplifier is in MUTE, the PROTECT LED will be also lit to
show that the amplifier is disabled. Also when the system is waking up from the
STANDBY mode, the PROTECT led will be lit for a few seconds. Under these
circumstances the PROTECT LED is reporting that the amplifier is disabled, but not a
fault condition.
D) SIGNAL INPUT LEDS: Monitor the signal arriving at the module input.
Input: Signal is present at the input. Nominal input level is +8dBu (2Vrms).
OVLD: The input signal exceeds +14dBu (4Vrms), so it will be compressed.
Avoid the continuous lighting of this led in order to preserve the dynamic range
of the audio signal.
E) OUPUT LEDS: Show the amplifier output level
-24dB: The amplifier is delivering output power at -24dB of its maximum power
-12dB: The amplifier is delivering output power at -12dB of its maximum power
Clip: The amplifier is delivering its maximum output power
The connection panel has the following parts:
F) NETWORK: Computer connection through Ethernet protocol. Two 8-pin RJ45 /
EtherCon® compatible connectors with an internal switch allow the connection of
several units in daisy-chain. Please refer to Master Audio DSPStudio Quick Installation
Guide for more information on the remote connection.
G) BALANCED INPUT/LINK:
XLR-3 Female balanced signal connector for signal input.
XLR-3 Male connector for parallel connection of various cabinets with the same input
signal.
IMPORTANT: Please always use balanced microphone cable with the following pin
assignment:
1= Shield (Ground) 2= Live (+) 3= Return (-)
H) AC INPUT/OVERVOLTAGE PROTECTION: These leds show the status of the
AC mains supply.
ON: (Blue) When lit, the equipment is ON and the AC input level is within the
permitted range (200 to 250 VAC).
STANDBY: (Orange) This led is lit when the equipment is sensing the AC
voltage at the input. At power-up this led will lit for a second while the systems
checks for the input voltage.
OVERVOLTAGE PROTECTION: (Red) When activated, the AC voltage is
permanently out of the permitted range of the equipment (>250VAC), so it will
remain under protection until this condition is solved. Revise your connections
and mains power installation and consider that other equipment connected to
this line may have been damaged.
I) AC MAINS INPUT/LINK: Mains supply connection via PowerCon.
Blue connector for AC in.
Grey connector to feed other units in parallel. Linking up to 2 units of X-218W is
possible, provided that a quality cable of a minimum section of 3x2,5mm2 is
used. Connecting more than 2 units in parallel may lead to a voltage drop in the
cable that will reduce the equipment performance.
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5. CARDIOID SUBWOOFERS
Both X-215W and X-218W enable the combination of three or multiple of three
subwoofer cabinets in an array to provide exceptional directivity at low frequencies.
High directivity at low frequencies has two main effects on the sound field: firstly, the
low frequency level behind the subwoofer cabinets is greatly reduced; secondly, in
closed venues the diffuse sound field at low frequencies is reduced so the low
frequency reproduction is much more precise.
The typical operating range of a traditional subwoofer tends to be like a monopole,
i.e. tends to radiate with the same energy in all directions. This behaviour implies that
the control of radiation at low frequencies is very difficult because the wavelengths
are very large compared to the size of the source (8.5 m at 40Hz).
Fig.17. Traditional polar pattern of a subwoofer at 40Hz
To increase the directivity at low frequencies we must transform the omnidirectional
performance into a cardioid performance. This can only be achieved by various
sources, arranged in a certain position, to which we apply a specific phase, filtering
and delay. That is, we need to reproduce two signals with the same frequency and
similar amplitude which will have a difference in phase of approximately 180º at a
certain point of the sound field.
If the phases and delays are well calculated the result is a system in which we cancel
the energy of the back and not the one of the front.
This can only be achieved with cabinets that incorporate independent delay units on
their DSP, as X-215W and X-218W.
Fig.18. Cardioid pattern
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5.1. The CARDIOID preset
X-215W and X-218W can generate an uncompromised cardioid behaviour, which
means that there is no need for special cabinets, enabling the use of the system’s full
efficiency with just “one finger”.
In its minimum configuration a Cardioid setup consists of a stack of three subwoofer
cabinets (for X-215W) and of a horizontal line of three subwoofer cabinets (for X218W).
Only one subwoofer is needed to compensate for the energy of the other two radiating
to the front. Then, the cabinet facing to the back (to the stage) should be located in the
centre of the column.
Fig.19. Cardioid configuration for X-215W subwoofer
Fig.20. Cardioid configuration for X-218W subwoofer
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The front facing subwoofers must be driven with [LPF90+3] preset in X215W
and [LPF90] preset in X218W and the back facing subwoofers must be driven
with [CARDIOID] preset.
[LPF90+3]
[CARDIOID]
[LPF90+3]
[LPF90] [CARDIOID] [LPF90]
Fig.21. Presets for cardioid configuration
When placing the subwoofers in a cardioid configuration keep a distance to walls of at
least 60 cm in order not to affect the radiation of the central reversed cabinet.
Fig.22a. Back energy rejection at 40Hz / 50 Hz / 63Hz
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Fig.22b. X215W total back energy rejection. Yellow curve without central cardioid
subwoofer; orange curve adding central cardioid subwoofer.
Fig.22c. X218W total back energy rejection. Yellow curve without central cardioid
subwoofer; green curve adding central cardioid subwoofer.
IMPORTANT: If the user wants to adjust its own cardioid preset there is a
specific manual to do it. Please, contact the sales department of Master Audio
for more information.
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6. CONNECTING
6.1 Connection of 4 units
Connect the signal (mixing desk output) to XLR INPUT on the first active X208A unit.
Use the SPEAKON LINK output (“To X208P”) to transfer the INPUT signal to the
second X208P unit and thus sequentially for further units. The first active unit must be
switched on.
For the mains connection use the cable with the blue Neutrik PowerCon NAC3FCA.
Do not connect Xcellence Line Array series units using PowerCon without earth.
Fig.23. Connection for 4 units of X208 (signal and mains)
6.2 Connection of more than 4 units
Connect the signal (mixing desk output) to XLR INPUT on the first active X208A unit.
Use the SPEAKON LINK output (“To X208P”) to transfer the INPUT signal to the
second X208P unit and thus sequentially for up to three passive units.
Use the LINK XLR output on the first active X208A unit to transfer the INPUT signal
to the second active X208A unit and thus sequentially for further units. All of the units
in this chain must be switched on. Use the SPEAKON LINK output (“To X208P”) of
the second active cabinet to transfer the INPUT signal to the next X208P unit and
thus sequentially for up to three passive units.
For the mains connection in parallel use the cable with grey Neutrik PowerCon
NAC3FCB at one end and the blue Neutrik PowerCon NAC3FCA at the other end.
Do not connect more than four X-208A/X215W/X218W units using
the AC Stacking output connector (this is the maximum number of
units that can be linked). Nevertheless, we recommend to link two
units whenever is possible.
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Do not connect Xcellence Line Array series units in parallel using PowerConPowerCon without earth.
Fig.23. Parallel connection for the Xcellence Line Array series (signal and mains)
Fig.24. Connection for more than 4 units of X208 (signal and mains)
6.3. Parallel connection with subwoofers
You can connect X-215W and X-218W subwoofers in parallel with X-208 cabinets.
Please, follow the same parameters as explained in figure 24.
IMPORTANT: For information on the Ethernet connections and the remote control of
the system, please refer to Master Audio DSPStudio Quick Installation Guide.
7. OVERVOLTAGE PROTECTION
The Xcellence series models incorporate an exclusive protection by Master Audio
against mains voltage overload and other related problems (lose of neutral,
connection between phases, etc)
In the mains input an electronic circuit compares the input voltage with a reference
value. When the input exceeds 250 Volts, the circuit reacts by blocking the input
tension until it returns to its correct limits (230V +/- 10%).
When the overvoltage LED lights up red, the unit stops running, until the correct
voltage is re-established.
Generally the cause of such an anomaly tends to be a neutral voltage drop or
incorrect connection of the equipment to 400V supply. Whenever the overvoltage
LED lights up, check the tension of the electrical phases: other devices in the sound
system are also at risk of electrical fault and severe damage.
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8. MOUNTING AND INSTALLATION
Flying an Xcellence Line Array system is easy, fast and secure. To perform any
operations related to flying the system, read the present document, and act on the
warnings and advice given.
Only experienced installers with adequate knowledge of the system and local safety
regulations should fly speaker cabinets.
It is the user's responsibility to ensure that the systems to be flown and the flying
accessories (such as chains, eyebolts, lock pins...) comply with state and local
regulations. They should be regularly inspected and replaced if in doubt.
When flying enclosures from ceiling support structures, extreme care should be taken
to assure the load bearing capabilities of them. Do not fly systems from unsafe
structures.
All flying accessories that are not supplied by Master Audio are the user's
responsibility. Use at your own risk.
Remember that no risks should be taken with regards to public safety.
8.1. Description
Each X-208 cabinet includes two structures on each side of the enclosure, one on the
front-lateral side and the other on the back-lateral side. These structures are
manufactured from 4mm black painted stainless steel; they are affixed to an internal
plate with special crop resistant screws. There is a guide (front guide) assembled on
the front-lateral structure (which is used to vertically join the cabinets); a second
guide (back guide) assembled on the back-lateral structure is used to vertically join
the cabinets and to tilt them.
Angles can be changed from 0º to 10º. To safely lock both guides, the lock pins
supplied must be used.
Use the “10º” hole to join one X-208 with TAX-208 frame.
To tilt the cabinets, both the back-lateral structure and the back guide must be used.
Fig.25. Flying hardware (lateral view)
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Fig.26. Back guide with graduation
To block the guides, highly resistant 8mm pins are used with ball safety lock.
To fly X-208 units use the TA-X208 frame. It is made from stainless steel. It includes
a centre bar to reinforce the whole structure. The bar has a series of holes that
provide a pickup point for the steel chain slings or the hoists. The pickup point chosen
will determine the tilt angle of the whole array system.
Fig.27. TA-X208 Frame
A shackle is included on the TA-X208 frame kit. It can be fitted into any of the centre
bar holes (depending on the gravity centre of the configuration). The shackle can be
also hung on the elevation motor of the system.
Fig.28. Flying configuration
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The numbers on the central bar are those corresponding to Ease Focus2
calculations.
Fig.29. Pin points
8.2. X-208 Flying
Use the back guide to choose the desired tilt angle (0º, 0.5º, 1º, 1.5º, 2º, 3º, 4º, 5º, 6º,
7º, 8º, 10º). Set the back guide between the back lateral structures of the cabinet that
is placed above. Lock the guides with the safety pins.
Fig.30. X-208 Flying. Flat Line Array (Cabinet 1 Back Guide = 10º)
(Cabinet 2/3/4 Back Guide = 0º)
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Fig.31. X-208 Flying. 5º Curved Line Array (Cabinet 1 Back Guide = 10º)
(Cabinet 2/3/4 Back Guide = 5º)
8.3. X-215W Flying
Units are joined through the built-in guides of each cabinet. Use points 1 and 2 to
block the system.
Fig.32. X-215W Flying, two units
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Fig.33. X-215W Flying, three units in cardioid configuration
8.4. X-208 + X-215W Flying
It is useful to fly low frequency reinforcement units on the top of the system, as they
are the heaviest enclosures. Place the subwoofers as has been explained in section
8.3. Join the last unit of X-215W onto the first unit of X-208 through the FA-X208/215
accessory (see FA-X208/215 specific manual).
Please select “SW” position on X-208 back guide for the upper cabinet
Follow section 8.2 to fly the rest of X-208 units (choose between a flat line array or a
curved line array). We recommend 1-2 units of X-215W for each 4 units of X-208.
FA-X208/215
Fig.34. X-208 + X-215W flying with FA-X208/215 accessory
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8.5. X-208 + X-210 Flying
It is useful to fly the X-210 units on the top of the system, as they are the heaviest
enclosures. Place the X-210 as has been explained in its user’s manual. Join the last
unit of X-210 onto the first unit of X-208 through the FA-X208/210 accessory (see FAX208/210 specific manual).
Follow section 8.2 to fly the rest of X-208 units (choose between a flat line array or a
curved line array).
Please select from “0º” to “10” position on X-208 back guide for the upper cabinet
FA-X208/210
Fig.35. X-208 + X-210 flying with FA-X208/210 accessory
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9. TECHNICAL SPECIFICATIONS
9.1. X-208A specifications
Balanced line input: 2V (+8dBu) Impedance: 20k ohm
Mains: 220V-240VAC / 50-60Hz (overvoltage protection >250V)
Average current draw: 4A
(Heavy duty musical program)
Frequency response
Usable bandwidth (-10 dB) 78Hz-18kHz (1W, 4FLAT_FR preset)
Maximum output level (1m/continuous) 127 dB SPL
Total amplifier power
LOW 2400W
HIGH
600W
Nominal directivity
Horizontal 110º
Vertical defined by the array
Components
LF 2 x 8” neodymium woofers (2.5” voice coil)
HF 2 x 1”-exit neodymium drivers, PEN diaphragm (1.7” voice coil) mounted on our
exclusive high frequency waveguide
Cabinet
Type Symmetric, 110º V-shaped, bass-reflex
Front height 250 mm
Rear height 178mm
Width 684 mm
Depth 522 mm
Weight (net) 25 Kg
Connectors 2 x AC PowerCon (input, link)
2 x XLR (input, link)
2x Ethercon RJ45 for Ethernet connection/link
Material Birch plywood, Steel front grilles with grey acoustic cloth
Finish Hi-resistance weatherproof bi-component paint
Rigging Black painted stainless steel hardware
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9.2. X-208P specifications
Impedance
LOW 16 ohm
HIGH 12 ohm
Power Handling (r.m.s)
LOW 500 W
HIGH 100 W
Musical program
LOW 1000 W
HIGH 200 W
Frequency response
LF Usable bandwidth (-10 dB) 78 Hz – 2k2 kHz
HF Usable bandwidth (-10 dB) 1k2Hz - 18kHz
Sensitivity
LF (1W @ 1m) 100 dB SPL
HF (1W @ 1m) 108 dB SPL
Nominal directivity
Horizontal 110º
Vertical defined by the array
Components
LF 2 x 8” neodymium woofers (2.5” voice coil)
HF 2 x 1”-exit neodymium drivers, PEN diaphragm (1.7” voice coil) mounted on our
exclusive high frequency waveguide
Cabinet
Type Symmetric, 110º V-shaped, bass-reflex
Front height 250 mm
Rear height 178mm
Width 684 mm
Depth 522 mm
Weight (net) 22 Kg
Connectors 2 x SPEAKON +1/-1 LOW / +2/-2 HIGH
Material Birch plywood, Steel front grilles with grey acoustic cloth
Finish Hi-resistance waterproof bi-component paint
Rigging Black painted stainless steel hardware
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9.3. X-215W specifications
Balanced line input:
2V (+8dBu) Impedance: 20k ohm
Mains: 220V-240VAC / 50-60Hz (overvoltage protection >250V)
Average current draw: 4A
(Heavy duty musical program)
Frequency response
Usable bandwidth (-10 dB) 32Hz-120Hz
Maximum output level (1m/continuous) 133 dB SPL
Amplifier power 2400W
Nominal directivity
Horizontal omnidirectional
Vertical omnidirectional
Components
LF 2 x 15” neodymium woofers (4” voice coil) with rubber surround
Cabinet
Type 6th-order bandpass
Height 600 mm
Width 764 mm
Depth 859 mm
Weight (net) 79 Kg
Connectors 2 x AC PowerCon (input, link)
2 x XLR (input, link)
1x Ethercon RJ45 for Ethernet connection
Material Birch plywood, Steel front grilles with grey acoustic cloth
Finish Hi-resistance waterproof bi-component paint
Rigging Black painted stainless steel hardware
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9.4. X-218W specifications
Balanced line input:
2V (+8dBu) Impedance: 20k ohm
Mains: 220V-240VAC / 50-60Hz (overvoltage protection >250V)
Average current draw: 4A
(Heavy duty musical program)
Frequency response
Usable bandwidth (-10 dB) 30Hz-100Hz
Maximum output level (1m/continuous) 134 dB SPL
Amplifier power 2400W
Nominal directivity
Horizontal omnidirectional
Vertical omnidirectional
Components
LF 2 x 18” neodymium woofers (4” voice coil)
Cabinet
Type Bass-reflex
Height 1046 mm
Width 740 mm
Depth 780 mm
Weight (net) 98 Kg
Connectors 2 x AC PowerCon (input, link)
2 x XLR (input, link)
1x Ethercon RJ45 for Ethernet connection
Material Birch plywood, Steel front grilles with grey acoustic cloth
Finish Hi-resistance waterproof bi-component paint
Rigging -----------
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10. FLYING & STACKING ACCESSORIES
a) X-208 Flying
You need: TA-X208 frame
b) X-208 + X-215W Flying
You need: TA-X210 flying frame
FA-X208/215 flying adaptor
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c) X-208 + X-210 Flying
You need: TA-X210 flying frame
FA-X208/210 flying adaptor
d) X-208 Stacking on X-218W
You need: FR-X208 kit stacking
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11. TIME ALIGNMENT IN PA SYSTEMS
In common PA systems the frequency range is divided into different ranges which are
reproduced using different cabinets (subwoofers for the bass range and top cabinets
for the mid-high range). This means different locations and positions of the sound
sources.
This leads to some interferences in the crossover range, causing notches and peaks
in that area. Time alignment (delay) tries to adjust the arrival time of sound so that in
the crossover area it arrives at the same time.
Fig.36.This system is not completely aligned because d1 and d2 are not equal.
If we do not put a delay on the subwoofer cabinets we may notice a dramatic
cancellation in the frequency range being shared by both cabinets or in the crossover
frequency between the subwoofer units and the top units.
Fig.37. Magnitude and phase response of the complete unaligned system (with no
delay)
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Fig.38. Magnitude and phase response of the complete aligned system (with delay),
green curve
The delay value that must be introduced into the subwoofers depends on many
factors such as the position of the subwoofers with respect to the top boxes and the
height of the top boxes with respect to the subwoofers. That is the reason why it is
very difficult to establish a functioning single value for all applications.
IMPORTANT: If the user wants to adjust its own system there is a specific
manual to do it (“Time alignment in PA systems”). Please, contact the sales
department of Master Audio for more information.
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12. TROUBLESHOOTING
No power
Check the device is connected to mains
Check mains cable is in good condition.
No sound
Check with the indicators that the signal is being sent from the mixer.
Check that the signal cables are in good condition and connected at both ends
The mixer output level must not be at minimum.
Check that the mixer in not in Mute mode.
Distorted output signal
The system is being saturated with a very high input signal, frequently caused by
the mixer overload. Check the output level or mixer gain channels.
Poor bass levels
Check the polarity on the signal connections between the mixer and cabinets. If any
of the Pins (1, 2 or 3) have been inverted at the cable ends, this will cause significant
performance and sound quality loss.
Noise and Hum
Check that all the connections to the active units are in good condition.
Avoid intertwining between mains supply cables or proximity to transformers or
Electromagnetic (EMI) emitting devices.
Check there is no light intensity regulator in the same AC circuit as the unit.
ALWAYS connect the sound and light circuits in different phases.
Overvoltage LED light (RED)
Check that the mains voltage is within the limits (230+/-10%), 50/60 Hz
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