Master audio MAW218D7 User manual

MAW218D7
User’s manual
Pol.Ind.Norte-Perpinyà,25
08226 TERRASSA (Barcelona-SPAIN)
[e-mail]
www.master-audio.com
Nov 2008

Amate Electroacústica,s.l.
MAW218D.Version 1.2 Nov 08 2
Safety Instructions
1. All the safety and operation instructions should be read before this product is
operated.
2. The exclamation point within an equilateral triangle is intended to alert the user of
the presence of internal components whose substitution may affect safety.
3. The lightning flash with arrowhead symbol within an equilateral triangle is intended
to alert the user of the presence of uninsulated dangerous voltage, that may
constitute a risk of electric shock to persons.
4. This product should not be exposed to rain or moisture. Do not use it, for example,
near a swimming pool, water fountain or any liquid sources.
5. Clean only with a dry cloth.
6. This product should be situated so that its location does not interfere with its proper
ventilation.
7. Do not install near heat sources such as radiators or other devices which produce
heat.
8. This equipment should be serviced only by qualified service personnel when:
A. The power-supply cord or the plug has been damaged; or
B. Objects have fallen, or liquid has spilled; or
C. This product does not appear to operate normally; or
D. This product has been exposed to rain; or
E. The chassis is damaged.
9. Unplug this product during lightning storms or when unused for long periods of
time.
10. Do not suspend the cabinet from the handle.
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:

Amate Electroacústica,s.l.
MAW218D.Version 1.2 Nov 08 3
1.INTRODUCTION
1.1.General
Amate Electroacústica, s.l. would like to thank you for your confidence in our new
MAW Series, specially designed for Line Array configurations.
The accumulated experience of more than 30 years in the design of acoustic
cabinets and amplifiers, together with the application of the most advanced
technology and transducers, have allowed this series to become the optimal and
ideal solution for a wide range of situations, specially those which require high levels
of sound pressure and a control of vertical coverage. Stadiums, theatres, big events,
etc... will become the perfect places for its use.
We suggest you carefully read the following instructions in order to obtain the best
results in performance.
2.MAW-218 SYSTEM DESCRIPTION
Amate Electroacústica offers one version of its MAW-218 Low frequency
reinforcement System.
MAW-218/D: Active version with DSP control
It includes two 18" Neodymium Woofers and they are acoustically controlled by the
volume of its two chambers. We obtain an excellent performance with very low levels
of distortion.
2.1. 18" Neodymium Loudspeakers
The 18" transducers used, which are probably the best ones on the current market
with these features, offer a clean, undistorted low frequency reproduction at very high
sound pressure levels. This low distortion and unmatched quality are further and
significantly improved by the double demodulating rings (DDR) embedded in the pole
piece of the magnetic structure. These are designed
to dramatically reduce the intermodulation and third order distortion while also
improving transient response. Excellent heat dissipation is achieved by incorporating
external magnetic configuration.
2.2.Finish
The MAW-218D has been made of vibration and moisture-resistant birch plywood. All
cutting and milling work, as well as drilling operations, has been developed by
computerized numeric control machinery (CNC) which allows us to ensure perfect and
accurate assembly.
The black finish, which uses totally ecological water-based acrylic resin paint, provides
an excellent external protection
It includes a 2mm black-painted steel grille with acoustically transparent foam on the
front side.

Amate Electroacústica,s.l.
MAW218D.Version 1.2 Nov 08 4
Each unit also includes lateral sockets which may be used to fix the TA-STK210/218
Kit Stacking to adapt the MA210 on the MAW218 (see point 5).
Fig.1. Dimensions of MAW-218D
2.3. MAW-218/D System
D=DSP version of MAW-218 with in-built amplification and internal processing through
DSP included..
The Class D amplification modules are 3000 W Their high efficiency (almost 90%)
allows their location on the rear panel without the necessity of forced cooling. We
eliminate any fan or any other auxiliary device which may fail because of extra
mechanical work.
The DSP control software allows:
•Parametric equalizations
•Delays
•Gain control
•Crossovers up to 24 dB/Oct
•Limiters
The adjustments can be done through a rear screen placed on each MAW-218/D or
through PC with RJ45 connectors.
2.3.1.Rear connections
Each unit of MAW-218/D includes a panel with the following items:

Amate Electroacústica,s.l.
MAW218D.Version 1.2 Nov 08 5
A) RJ45 INPUT : PC Signal Input
B) RJ45 LINK : PC Link Signal
C) INPUT SIGNAL : Balanced XLR input signal connector
1= Ground 2= Live 3= Return
D) LINK INPUT SIGNAL : Balanced XLR connector for paralleling several units, which
will share the same input.
1= Ground 2= Live 3= Return
E) AC INPUT : Input PowerCon connector.
F) AC STACKING OUTPUT : PowerCon Output connector to feed a secondary
cabinet.
G) LED OVERVOLTAGE
Fig.2. Connections panel for MAW-218/D
3- OVERVOLTAGE PROTECTION
The MAW218D includes overvoltage protection.
An electronic circuit compares the input voltage with a reference value on the AC
Input connector (MAINS). When the input voltage is higher than 250 Volts the circuit
starts to work, blocking the input voltage until its value returns to its correct limits
(230V +/- 10% ).

Amate Electroacústica,s.l.
MAW218D.Version 1.2 Nov 08 6
When the Overvoltage LED lights (in RED) (Fig.2. LED OVERVOLTAGE (G)), the
cabinet stops working (or works intermittently) until the correct voltage values are
reached again.
4.FLYING
The MAW218D cannot be flown.
5.STACKING
The STK210/218 Hardware adapts the MAW218 with the MA210. With this accessory
you can stack MA210 units over the MAW218 subwoofer.
MA210 + MAW218
You need
STK210/218 Kit Stacking

Amate Electroacústica,s.l.
MAW218D.Version 1.2 Nov 08 7
6. TECHNICAL SHEETS
MAW-218/D7
Line Input (Balanced) Impedance
1.8 V 10k ohms
Mains
230V +/- 10%
Consumption at Maximum Power
12 A
Frequency Response
LF Usable bandwidth 30 Hz - 130 Hz (-10 dB) (1W, processed)
Sensitivity
LF (1W @ 1m) 103 dB SPL
Amplifier Power
LF 3000 W
Nominal Directivity (-6dB)
Horizontal omnidirectional
Vertical omnidirectional
System Output Continuous SPL
(Long Term)
One enclosure @ 3000 W 138 dB
Two enclosures @ 3000 W 144 dB
Four enclosures @ 3000 W 150 dB
Components
LF 2x18" Long excursion Neodymium Woofer (100mm Voice Coil)
Enclosure
Width 740 mm
Height 1042 mm
Deep 785 mm
Weight (net) 98 Kg
Connections 1x AC INPUT PowerCon
1x AC STACKINGOUTPUT PowerCon
1x INPUT XLR Balanced
1x LINK XLR Balanced
2x RJ45 for External PC Control
Material Birch plywood, 2mm Black- Painted Steel Grille
Finish Black (Acrylic resin, ecological water-based)
Rigging TA-STK210/218 (Optional)

Amate Electroacústica,s.l.
MAW218D.Version 1.2 Nov 08 8
7.TROUBLESHOOTING
No Power
•Make sure that the cabinet is plugged in.
•The internal Breaker automatically protects the cabinet in case of bad working.
No Sound
•Check that the mixer, sound source and processor is sending signal to the unit.
•Check that the cable from the mixer, sound source or processor to the units is
correctly connected. Replace the cable if defective.
•Make sure the output volume (gain) control on the mixing console and processor is
sufficiently turned up to drive the inputs of the speakers.
•Make sure the mixer and the processor do not have a Mute on.
Distorted sound
•The system is overloaded and has reached maximum power. Turn down the mixer's
output or the channel's gain.
.
Poor bass performance
•Check the polarity of the connections between the mixer/processor and the MAW-
218/D amplifier. If you have inverted any of the Pins (1,2 or 3) in one of the extremes
of the wire, the losses may be extremely high.
Noise and Hum
•Make sure all connections to the active units are in good conditions.
•Avoid routing the signal cables near AC cables, power transformers, or EMI-
inducing devices.
•Check if there is any light dimmer on the same AC circuit as the cabinet. Connect
the sound system to a different phase than the lights.
Overvoltage LED (on RED)
•Check that the input voltage is within the right values (230V +/- 10%)