Martin Audio Speaker W8LS User Manual

W8LS

Line Array Subwoofer

Dedicated high performance sub-bass system

features

Dual long excursion 18" (460mm) direct radiator design

High power - 138dB continuous, 144dB peak (single unit half-space)

Extended response 32Hz – 180Hz 3dB

Useable response to 28Hz (-10dB)

Compatible with W8L Line Array

Fast, integral rigging system with variable splay angles

from 0 to 7.5˚ to match W8L column curvatures

Standard W8L grid may be used for flying or ground stacking

applications

Dedicated flown sub-bass for W8L Line Array

Ground stacked sub-bass for W8L Line Array

Under-stage sub-bass

Special effects sub-bass

The W8LS is a dedicated high performance sub-bass system designed to augment the low frequency output of the

W8L in large scale applications where the sub-bass enclosures must be flown. The physical dimensions of the W8LS

are identical to the W8L and it is equipped with the same proprietary rigging system, allowing flown arrays to be

constructed rapidly and safely.

It features twin, 1000 watt 18" (460mm) drive units with magnet structure and suspensions engineered for

maximum linear excursion. The drivers are reflex loaded by ports at either end of the enclosure and substantial

internal bracing is employed to minimise energy absorption by the cabinet walls at the very high pressures generated

within the enclosure itself.

The W8LS is constructed from multi-laminate birch ply and fitted with generously sized handles and a wheelboard

for transportation. To resist ingress of water, the driver cones are treated with a waterproof lacquer and the

perforated steel grille is backed with Declon foam.

The proprietary rigging system of the W8LS is quick to deploy and allows a wide range of W8L array curvatures to

be matched. Intercabinet angles from 0° to 7.5° are set by a rotating splay bar at the rear of the enclosure. All cabinet

rigging hardware is integral and remains captive in transit.

Whilst primarily designed for flown applications, the W8LS may also be ground-stacked on a standard W8L grid,

arrayed and strapped on-end or deployed under the stage apron if required.

W8LS Line Array Subwoofers are designed to be powered by Martin Audio MA4.2s power amplifiers.

Century Point, Halifax Road, Cressex Business Park,

High Wycombe, Buckinghamshire HP12 3SL, England.

Telephone: +44 (0)1494 535312 Facsimile: +44 (0)1494 438669

E-mail: [email protected]

www.martin-audio.com

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W8LS

Line Array Subwoofer

Dedicated high performance sub-bass system

technical specifications

architectural and engineering specifications

TYPE

Reflex loaded sub-bass

The loudspeaker system shall be of the horizontally

formatted sub-bass type for flown or ground-stack

applications. The loudspeaker system shall consist of

two 18" (460mm) direct radiating reflex loaded long

excursion low frequency transducers. The transducer

cones shall be treated with a waterproof lacquer and

protected by a perforated steel grille backed with

Declon foam. The enclosure shall be constructed of

heavily braced multi-laminate plywood with all flying

hardware integral and captive. The loudspeaker shall be

operated with a separate dedicated electronic

controller.

FREQUENCY RESPONSE (1) 32Hz-180Hz 3dB

-10dB @ 28Hz

DRIVERS

RATED POWER (2)

SENSITIVITY (6,3)

MAXIMUM SPL

(calculated @ 1m)

NOMINAL IMPEDANCE

CROSSOVER

2 x 18" (460mm)/4" (100mm) voice coil

2000W AES, 8000 peak

101dB (open space), 107dB (half space)

132dB continuous, 138dB peak (open space)

138dB continuous, 144dB peak (half space)

8 ohms per driver

70Hz-180Hz, depending on application

Vertical trapezoid with 3.75º wall angle, multi-

laminate birch ply construction

Textured grey paint

ENCLOSURE

FINISH

PROTECTIVE GRILLE

CONNECTORS

DIMENSIONS (inc. wheelboard) (W) 1314mm x (H) 490mm x (D) 755mm (855mm)

(W) 51.7ins x (H) 19.3ins x (D) 29.7ins (33.7ins)

Grey perforated steel

2 x Neutrik NL8

WEIGHT

(ex. wheelboard)

108kg (238lbs)

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

32Hz-180Hz 3dB.

Power handling shall be 2000W AES, 8000W peak.

Rated impedance shall be 8 ohms per driver.

Maximum SPL measured at 1 metre on axis shall be

132dB continuous, 138dB peak.

accessories

HTK172

Flying pin

W8L stacking rod

HAM09001

Dimensions (W) 1314mm x (H) 490mm x (D) 755mm

(51.7ins x 19.3ins x 29.7ins).

Weight 108kg (238lbs).

The loudspeaker system shall be the Martin Audio

W8LS.

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.