Martin Audio Portable Speaker WTUB User Manual

WTUB  
Compact theatre under-balcony enclosure  
features  
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Seamless coverage over 120˚  
High SPL from compact enclosure  
High frequency line array with proprietary  
diffusion phase plug  
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Switchable input configuration  
Dedicated hardware for under-balcony  
and ceiling mounting  
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Multi-laminate birch ply construction  
applications  
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Under-balcony fill in theatre sound systems  
Wide dispersion infill  
Speech and music reinforcement in conference venues  
The Wavefront Theatre WTUB enclosure has been specifically designed for under-balcony use in theatres and  
infill in venues requiring extremely wide horizontal coverage. The WTUB loudspeaker provides sound  
reinforcement for speech and music with exceptionally consistent tonal balance over the whole of its coverage  
angle. It also shares the same tonal characteristics as the larger members of the WT range, the WT2 and 3.  
The unusual driver complement and geometry is responsible for the uniform coverage of the enclosure. A triple  
soft dome, high frequency line array coupled with a proprietary diffusion phase plug gives very wide horizontal  
and tight vertical dispersion. Its narrow width allows minimal separation between the two 6.5" (165mm) cone  
drivers. This factor and the drivers’ 60˚ splay are responsible for the seamless horizontal coverage of the  
WTUB. The two 6.5" (165mm) drivers feature 1.5" (38mm) voice coils and an innovative heat exchange system  
to reduce power compression. A combination of ferrofluid and a rear mounted heatsink cools the high frequency  
line array’s neodymium magnet assembly, with extreme high frequency overload being dealt with by an auto-  
resetting over-current device.  
Featuring fully passive operation and requiring no controller, the WTUB is extremely straightforward to deploy.  
The enclosure input configuration is externally switchable between pins 1 and 2 on the fitted Neutrik NL4MP  
connectors. This allows daisy-chaining of cabinets via a 4 core cable, even when they are fed with different input  
signals.  
The rugged, multi-laminate birch ply enclosure features M8 inserts for the dedicated mounting bracket and an  
additional M8 ‘safety chain’ point. The multi-angled cabinet rear allows close proximity ceiling mounting with a  
downward tilt of up to 45˚. A pole mount socket gives the additional option of tripod stand mounting.  
Century Point, Halifax Road, Cressex Business Park,  
High Wycombe, Buckinghamshire HP12 3SL, England.  
Telephone: +44 (0)1494 535312 Facsimile: +44 (0)1494 438669  
All information is Copyright © 2006 Martin Audio Ltd.  
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WTUB  
Compact theatre under-balcony enclosure  
technical specifications  
architectural and engineering specifications  
TYPE  
Compact two-way passive,  
under-balcony reflex enclosure  
The loudspeaker system shall be of the two-way passive  
type consisting of two 6.5" (165mm) direct radiating  
reflex loaded low frequency transducers and one triple  
element high frequency line array coupled with a  
proprietary diffusion phase plug mounted in a multi-  
angled plywood enclosure. The enclosure shall be fitted  
with an integral pole mounting socket and supplied with  
a flying yoke. Input connector configuration shall be  
externally selected by a switch at the rear of the  
enclosure. Low and high frequency sections shall be  
integrated by an internal 1.2kHz passive crossover  
network.  
FREQUENCY RESPONSE (5) 80Hz-18kHz 3dB  
DRIVERS  
2 x 6.5" (165mm) bass mid drivers  
3 x 1" (25mm) soft dome HF line array  
200W AES, 800W peak  
RATED POWER (2)  
RECOMMENDED AMPLIFIER 200-400W into 4 ohms  
SENSITIVITY (6)  
MAXIMUM SPL (7)  
NOMINAL IMPEDANCE  
DISPERSION (-6dB)  
CROSSOVER  
ENCLOSURE  
FINISH  
PROTECTIVE GRILLE  
CONNECTORS  
93dB  
115dB continuous, 121dB peak  
8 ohms  
120º horizontal, 40º vertical  
1.2kHz passive  
16 litre, multi-laminate birch ply  
Textured black paint  
Black perforated steel  
2 x Neutrik NL4 switchable for  
input +1,-1 or +2,-2  
FITTINGS  
2 x M8 threaded inserts for dedicated bracket  
1 x M8 insert for safety point  
1 x mounting pole socket  
(W) 480mm x (H) 212mm x (D) 344mm  
(W) 18.9ins x (H) 8.4ins x (D) 13.6ins  
12kg (26.4lbs)  
Performance of the loudspeaker system with its  
electronic controller shall meet or exceed the following  
criteria:  
Frequency response measured 1 metre on axis shall be  
80Hz-18kHz 3dB.  
DIMENSIONS  
WEIGHT  
High frequency dispersion at -6dB points shall be  
120˚H x 40˚V.  
Power handling shall be 200W AES, 800W peak.  
Rated impedance shall be 8 ohms.  
Maximum SPL measured at 1 metre on axis shall be  
115dB continuous, 121dB peak.  
Dimensions (W) 480mm x (H) 212mm x (D) 344mm  
(18.9ins x 8.4ins x 13.6ins).  
Weight 12kg (26.4lbs).  
The loudspeaker system shall be the Martin Audio  
WTUB.  
N o t e s  
(1) Measured on-axis in half space at 2 metres, then referred to 1 metre.  
(2) AES Standard ANSI S4.26-1984.  
(3) Measured in half space at 2 metres with 1 watt input, using band limited pink noise, then referred to 1 metre.  
(4) Measured in half space at 2 metres using band limited pink noise, then referred to 1 metre.  
(5) Measured on-axis in open (4π) space at 2 metres, then referred to 1 metre.  
(6) Measured in open (4π) space at 2 metres with 1 watt input, using band limited pink noise, then referred to 1 metre.  
(7) Measured in open (4π) space at 2 metres using band limited pink noise, then referred to 1 metre.  
Tr a d e D e s c r i p t i o n s A c t  
Due to Martin Audio’s policy of continuing improvement, we reserve the right to alter these specifications without prior notice.  
Martin Audio is committed to refining state of the art sound reinforcement, combining in-depth product and field applications  
research with advanced manufacturing techniques. Every Martin Audio product is built to the highest manufacturing standards  
and rigorously tested to ensure that it meets the performance criteria specified in the design.  
Century Point, Halifax Road, Cressex Business Park,  
High Wycombe, Buckinghamshire HP12 3SL, England.  
Telephone: +44 (0)1494 535312 Facsimile: +44 (0)1494 438669  
All information is Copyright © 2006 Martin Audio Ltd.  
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