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Master Audio 

Xcellence Series.Ver 1.1 

 

Nov 09 

3

1. INTRODUCTION 
 
1.1. General product information 
 
Master Audio

 thank you for the trust placed in our 

Xcellence

 loudspeaker system. 

 
The Xcellence series combines the benefits of its coaxial point sound sources, the 
convenience of a self-powered system and the flexibility of the DSP (digital system 
processing) for cabinet control. 
 
More than 35 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, from sound back-up systems for theatres, clubs or TV 
channels to even churches, corporative events or concert halls. 
 
Coaxial technology achieves a sound distribution system which is totally coherent and 
in phase (as a point source). This is due to the fact that the directivity of the high and 
low frequency transducers couples up perfectly with the crossover frequency from the 
filters. This results in very smooth transitions between the bass and high frequency 
zone and the elimination of secondary null zones due to polar lobbing, typical of 
those systems using separate woofer and horn. 

 

The directivity of the cabinets with coaxial transducers is totally symmetric in the 
horizontal or vertical plane.  
 
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. Features and appearance 
 

X-12C & X-15C 

 

- Self-powered 

cabinet. 

-  750W amplifier for mid range. 
-  250W amplifier for high range. 
-  DSP with 48 bit bus and 28 bit filter coefficients. 
-  DSP Controls (parametrics, delay, volume and limiters). 
-  RJ45 output for control via computer. 
-  Overvoltage protection (>250V-400V). 
-  2 way coaxial speaker with 80º symmetry, including one 12” / 15” woofer in 

neodymium and one 3” voice coil diameter, titanium diaphragm compression 
driver. 

-  Birch plywood construction. 
-  Varnished finish. Optional black textured paint finish: totally ecological.  
-  Frontal steel grille with acoustically transparent grey cloth. 

 

 

 
 
 
 

 

Summary of Contents for X-18W

Page 1: ...XCELLENCE SERIES X 12C X 15C X 18W Systems Pol Ind Norte Perpinyà 25 08226 TERRASSA Barcelona SPAIN Copyright 2009 info master audio com All rights reserved master audio com Nov 09 User s manual ...

Page 2: ...pment 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 equi...

Page 3: ...r frequency from the filters This results in very smooth transitions between the bass and high frequency zone and the elimination of secondary null zones due to polar lobbing typical of those systems using separate woofer and horn The directivity of the cabinets with coaxial transducers is totally symmetric in the horizontal or vertical plane We suggest you read the following information with atte...

Page 4: ... and a compression driver with 3 voice coil and titanium diaphragm The result is a clean high quality sound whether for nearfield listening or at full power in larger sites Thanks to its wedge shape it can be used as an onstage monitor obtaining stable homogeneous response and coverage The upper and lower surfaces incorporate a pole mount socket for a standard 35mm tripod which at the same time al...

Page 5: ... in birch plywood which has a high resistance to vibrations and humidity Varnished finish and optional by order textured water based acrylic resin black paint which is totally ecological The front face is protected by a 1 5 mm thick steel grille with acoustically transparent grey cloth Wedge shape As onstage monitor the front baffle is oriented at 35º from vertical Fig 1 XC as onstage monitor 2 2 ...

Page 6: ...Xcellence Series Ver 1 1 Nov 09 6 P2 NEARFIELD 3dB Low 3dB High 3dB Mid nearfield P3 SPEECH 9dB Low 6dB High speech P4 MONITOR Flat response half space floor P5 XOVER HFP 100Hz with subwoofer Fig 2 XC PRESET options ...

Page 7: ... f AC LINK Power link for PowerCon connector to feed other units in parallel up to a maximum of 3 extra units g AC INDICATORS Power supply ON lights up with correct AC signal STAND BY lights up during switch on sequence OVERVOLTAGE PROTECTION lights up if the AC input signal exceeds 250VAC The system shuts down automatically and cannot be connected until the AC level is correct This protects again...

Page 8: ...ntrol by DSP The manufacturer presets LPF90 LP110 LPF130 LPF90 LPF110 LPF130 make it easy flexible and user friendly The 18 neodymium woofer used thanks to its exclusive magnetic design combines 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 disto...

Page 9: ...J45 connection for the RS485 bus The LPF90 and LPF90 presets mean low pass filter at 90Hz LPF110 and LPF110 mean low pass filter at 110Hz LPF130 and LPF130 mean low pass filter at 130Hz By upping the low pass filter a greater boom sensation can be achieved but clarity is lost It is down to the user to decide on the most suitable preset The X 18W is connected using the XLR balanced connectors Mains...

Page 10: ...sed in conjunction with the X 12C and X 15C in XOVER preset the X 18W must operate in positive polarity LPF90 LP110 LPF130 When the X 18W is used in conjunction with the X 12C and X 15C in FACTORY NEARFIELD SPEECH or MONITOR presets the X 18W must operate in negative polarity LPF90 LP110 LPF130 P1 LPF90 P4 LPF90 Low pass filter at 90Hz P2 LPF110 P5 LPF110 Low pass filter at 110Hz P3 LPF130 P6 LPF1...

Page 11: ... further units All of the units in this chain must be switched on 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 4 X 12C or X 15C units using the AC Stacking output connector Do not connect Xcellence series units in parallel using PowerCon PowerCon without earth Fig 7 P...

Page 12: ...k of electrical fault 7 FUNCTIONS of the INTERNAL DSP All the XCELLENCE series are equipped with an internal DSP unit which can be operated by the LCD and keypad located at the rear panel of the cabinet and or by an external PC RJ45 connector a Through keypad and without PC the following functions will be accessible Gain Control independent for each way low and high Limiter Adjust also independent...

Page 13: ... that it is necessary to store the modified settings using the SAVE function The new settings will be stored in a memory slot which will be identified bny an 8 character name given by the user Select target memory slot Confirm Once this step is completed the settings will be stored in the internal memory Next time this setting is required it can be loaded using the MEM key Select Memory Confirm an...

Page 14: ...amate master audio com 8 MOUNTING AND INSTALLATION Whenever possible mount the Full Range units in a high position between 2 and 3 meters above ground angled towards the audience If the units are mounted close to the ground the back row listeners will receive low quality sound Due to the coaxial technology design the cabinets must be oriented so that the central angle axis 0º is directly focused a...

Page 15: ... for use in the horizontal position The X 18W incorporates a base plate on its upper side for the attachment of a standard 35mm diameter bar Fig 12 Combination with subwoofer 9 MOUNTING ACCESSORIES The UB X12 is an optional U bracket accessory for wall horizontal orientation and truss mounting horizontal orientation of the X12C The UB X15 is an optional U bracket accessory for wall horizontal orie...

Page 16: ...with a self locking nut Use the central hole marked with an arrow 3 Set the M10 knobs on both laterals 4 Set the UB X bracket onto X12 15C cabinet Block both laterals with the M10 knobs Put the lateral clips in a random position later you will adjust the desired angle Turn the clip s ring to block release it Block release ...

Page 17: ...ce Series Ver 1 1 Nov 09 17 5 Place all the system on the Truss bar Block the hook clamp 6 Use the lateral clips to choose the desired tilt angle 7 You can use the safety cable around the cabinet s handle and the truss bar ...

Page 18: ...LL MOUNTING 1 Place the UB X bracket in front of the mounting surface so you can mark the locations of the mounting holes 2 Drill some corresponding pilot holes on the wall and fix the bracket with some screws 3 Set both M10 knobs on the bracket s laterals ...

Page 19: ... 4 Set the cabinet on the bracket and fix it with both M10 knobs 5 Use the lateral clips to choose the desired tilt angle 6 You can use the safety cable around the cabinet s handle In this case fix the safety cable on the lateral hole of the bracket ...

Page 20: ...hm Power delivered to transducers LF 750 W HF 250 W Nominal directivity 6dB Axis symmetrical 80º Components LF 1 x neodymium woofer 3 voice coil 12 15 HF 1 x neodymium driver titanium diaphragm 3 voice coil Cabinet Height 560 mm 650 mm Width 410 mm 460 mm Depth 401 mm 429 mm Angle monitor 35º to vertical Weight net Kg 19 2 23 2 Connectors 2 x AC PowerCon input link 2 x XLR input link 2x RJ45 for c...

Page 21: ...m output level 128 dB SPL preset LPF130 Total amplifier power 1500 W Nominal directivity 6dB Horizontal omnidirectional Vertical omnidirectional Components LF 1x18 neodymium woofer 4 voice coil Cabinet Height 567 mm Width 610 mm Depth 650 mm Weight net 43 Kg Connectors 2 x AC PowerCon input link 2 x XLR input link 2x RJ45 for computer connection input link Material Birch plywood Steel frontal gril...

Page 22: ...e system is being saturated with a very high input signal frequently caused by the same mixer 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 connec...

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