Martin Audio Speaker System W8LM User Manual

W8LM  
Mini Line Array  
Mini, high performance three-way  
line array enclosure  
features  
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Mini three-way line array element  
Hybrid™ dual 8" (200mm) LF+MF configuration (-3dB@60Hz)  
LF+MF - 100dB @1W, 1m (single cabinet)  
Twin 1" (25mm) HF horn - 106dB @1W, 1m (single cabinet)  
Consistent 100º (-6dB) horizontal mid and HF pattern control  
Passive or biamp operation  
12 ohm system impedance, up to 4 cabinets on one amplifier channel  
Fast, integral rigging system with variable splay angles  
ViewPoint™ array optimisation software  
Factory controller presets for a wide variety of configurations  
Compatible with W8L and W8LC line-array elements  
Compatible with WSX, WLX and WMX subwoofers  
applications  
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Theatre Sound Reinforcement  
Live Sound Reinforcement  
Corporate Events  
Fixed Installations  
Delay systems for large scale outdoor sound reinforcement  
The Martin Audio W8LM is a mini line array enclosure designed to bring line array performance benefits to a variety  
of small and medium scale applications. It meets the need for a versatile, scalable system that can be flown or ground  
stacked for corporate events, theatres and indoor venues. It is also suitable as a delay system for large scale outdoor  
sound reinforcement.  
Following the constant directivity horn design philosophy of the W8L and the W8LC, the W8LM is a three-way  
system that combines line array principles with innovative horn loading techniques to produce a next generation,  
small line array with maximum dynamic impact.  
Amazingly for its size, the W8LM is a full-bandwidth system (-3dB @ 60Hz) and may be used without subwoofers  
in many applications. Where additional low frequency extension is required, it is ideally complemented by ground  
stacked WSX or WLX/WMX Hybrid™ folded horn/reflex loaded subs. Alternatively if flown sub-bass is required  
then WLX/WMX Hybrid™ folded horn/reflex loaded subs may be used.  
To achieve the vertical pattern required, practical line arrays are nearly always curved in the vertical plane –  
invalidating some of the simplistic ideas about wavefront curvature associated with first generation line arrays. The  
acoustic elements of the W8LM have been developed to have optimal wavefront curvature characteristics for real  
world situations where higher degrees of array curvature are likely.  
Whilst the W8LM is a three-way system, it can be driven two-way active or entirely passively via its internal  
crossover, (selected by a rear mounted switch). To make system design even more cost effective, the W8LM is a 12  
ohm cabinet and up to four cabinets can be driven off one channel of a professional quality amplifier such as the  
MA2.8s or MA4.2s.  
The minimum number of W8LM elements in an array is 3, but most applications will require blocks of 4, 8 or 12  
elements, depending on the required output capability and  
vertical coverage angle.  
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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W8LM  
Mini Line Array  
Mini, high performance three-way  
line array enclosure  
frequency responses  
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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W8LM  
Mini Line Array  
Mini, high performance three-way  
line array enclosure  
overall dimensions  
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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W8LM  
Mini Line Array  
Mini, high performance three-way  
line array enclosure  
technical specifications (single enclosure)  
architectural and engineering specifications  
The loudspeaker system shall be of the three-way  
horizontally formatted line array type, switchable  
passive/bi-amp. The low and mid frequency sections shall  
consist of two 8" (200mm) cone transducers, one direct  
radiating and reflex loaded and one front loaded by a  
constant directivity mid-horn using a toroidal phase plug  
and reflex loaded, with both sharing the same enclosure.  
The drivers shall operate in tandem to produce low  
frequencies up to 300Hz. Above 300Hz, the direct  
radiator driver shall be rolled off by an internal passive  
network and the horn loaded driver reproduce mid  
frequencies up to 2.2kHz. The high frequency section  
shall consist of two 1" (25mm) horn elements vertically  
mounted to produce a low-curvature vertical wavefront.  
The enclosure shall be constructed of heavily braced  
multi-laminate plywood with all flying hardware integral  
and captive. Bi-amp or passive operation shall be selected  
by a switch at the rear of the enclosure. In bi-amp mode  
the loudspeaker shall be operated with a separate  
electronic controller providing a 2.2kHz crossover  
between mid and high frequencies. In passive mode the  
mid and high frequency sections shall be integrated by an  
internal 2.2kHz crossover network.  
TYPE  
Three-way, compact line array element  
FREQUENCY RESPONSE (5) 60Hz-18kHz 3dB  
DRIVERS: LF + MF Section  
8" (200mm)/2" (50mm) voice coil, reflex-loaded  
direct radiator  
8" (200mm)/2" (50mm) voice coil, neodymium  
driver, front horn loaded, rear reflex loaded  
2 x 1" (25mm) exit HF compression drivers,  
horn loaded  
LF + MF: 400W AES, 1600W peak  
HF: 75W AES, 300W peak  
Passive: 400W AES, 1600W peak  
LF + MF: 100dB  
DRIVERS: HF Section  
RATED POWER (2)  
SENSITIVITY (6)  
HF: 106dB  
Passive: 99dB rising to 105dB at HF  
MAXIMUM SPL (calculated @ 1m) LF + MF: 125dB continuous, 131dB peak  
HF: 125dB continuous, 131dB peak  
Passive: 124dB continuous, 130dB peak  
LF + MF: 12 ohms  
HF: 12 ohms  
Passive: 12 ohms  
100º horizontal (down to 800Hz),  
7.5º vertical  
120º horizontal (down to 700Hz) @ -10dB  
300Hz passive, 2.2kHz active or passive  
Vertical trapezoid with 3.75º wall angle, multi-  
laminate birch ply construction  
Textured paint  
Perforated steel  
2 x Neutrik NL4  
(W) 620mm x (H) 243mm x (D) 400mm  
(W) 24.4ins x (H) 9.6ins x (D) 15.8ins  
29kg (64lbs)  
NOMINAL IMPEDANCE  
DISPERSION (-6dB)  
CROSSOVER  
ENCLOSURE  
FINISH  
PROTECTIVE GRILLE  
CONNECTORS  
DIMENSIONS  
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  
60Hz-18kHz 3dB.  
High frequency dispersion at -6dB points shall be  
100˚H x 7.5˚V.  
Power handling shall be 400W AES, 1600W peak FR/(LF  
+ MF), 75W AES, 300W peak HF.  
Rated impedance shall be 12 ohms FR/(MF + HF),  
12ohms HF.  
WEIGHT (including rigging hardware)  
accessories  
ASF20001  
ASF20002  
HAM09002  
HTK175  
Flying frame  
Lifting bar  
Groundstack bar  
Flying pin  
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.  
Maximum SPL measured at 1 metre on axis shall be  
125dB continuous, 131dB peak.  
Dimensions (W) 620mm x (H) 243mm x (D) 400mm  
(24.4ins x 9.6ins x 15.8ins).  
(7) Measured in open (4π) space at 2 metres using band limited pink noise, then referred to 1 metre.  
Weight 29kg (64lbs).  
The loudspeaker system shall be the Martin Audio  
W8LM.  
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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