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Wharfedale Pro
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LX18MBE
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Wharfedale Pro LX15, LX-E Series, LX-12, LX12M, LX15M User Manual

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LX & LX-E SERIES MULTIPURPOSE LOUDSPEAKER SYSTEMS
LX-12, LX12M, LX15, LX15M, LX-215 full range multipurpose loudspeaker systems
LX-15B, LX-18B, LX-18MB, LX218B subwoofers
LX-12E, LX12ME, LX15E, LX15ME, LX-215E full range multipurpose loudspeaker systems
LX-15BE, LX-18BE, LX-18MBE, LX218BE subwoofers
Wharfedale Pro
LX & LX-E Series User Manual
LX(E) SERIES MULTI-PURPOSE LOUDSPEAKER SYSTEMS
The following apparatus is manufactured in the China by Wharfedale International Limited of IAG House, Sovereign Court, Ermine Business Park, Huntingdon, Cambs, PE29 6XU and conforms to the protection requirements of the European Electromagnetic Compatibility Standards and Directives relevant to Domestic Electrical Equipment. The appa­ratus is designed and constructed such that electromagnetic disturbances generated do not exceed levels allowing radio and telecommunications equipment and other apparatus to operate as intended, and, the apparatus has an ade­quate level of intrinsic immunity to electromagnetic disturbance to enable operation as specified and intended.
Details of the Apparatus: Wharfedale Pro Loudspeaker Model Number: LX12,LX12M, LX15, LX15M, LX215, LX15B, LX18B, LX18MB, LX218B, LX12E,LX12ME, LX15E, LX15ME, LX215E, LX15BE, LX18BE, LX18MBE, LX218BE
Declaration of Conformity
LX(E) SERIES MULTI-PURPOSE LOUDSPEAKER SYSTEMS
Contents
Welcome The L X Series Unpacking Cables and connections Amplifiers and power handling (limiters) Equalisation Arraying Rigging Specifications Parts and accessories Warranty
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LX(E) SERIES MULTI-PURPOSE LOUDSPEAKER SYSTEMS
Welcome
Thank-you for choosing a Wharfedale Pro Loudspeaker for your application. Since 1932, Wharfedale Loudspeakers have been at the forefront of loudspeaker technology. Our innovative designs combined with over seventy years of manufacturing audio systems make Wharfedale Pro products second to none.
Every component of every loudspeaker is designed and made in our own factories. We control all the variables to make sure every finished product complies with our standard of excellence.
We put in a lifetime of experience – you get out a lifetime of performance.
The LX Series
The LX(E) series from Wharfedale Professional is a range of high powered, high performance trapezoidal enclosures capable of extremely high sound pressure levels and exceptional sonic quality, with wide dynamic range and bandwidth. Exceptional features of the series include the large elliptical waveguide which provides superior control over HF coverage, with reduced distortion, greater output and smoother frequency response; the use of cast frame, large voice coil woofers for sustained output capability and minimal power compression under extended high power use. The LX Series is also availabe as an ‘E’ version, the difference between the LX and LX-E are as follows: LX : Enclosure is built from a combination of particle and MDF with a black carpet finish LX - E: Enclosure is built from plywood with a black painted finish. LX12-E and LX15-E feature 12 x M10 rigging points LX218-E: Four castors for easy transportation (LX218 has no castors) LX15B and LX18B feature crossover and high pass output for full range enclosures.
Features:
•Proprietary designed, high efficiency, high power Wharfedale Pro full-range drive units
• 50mm Titanium compression driver
• Elliptical Waveguide Technology
• Sophisticated crossover design enables smooth power and frequency response control through crossover region.
• Speakon™ connectors
•Protective full steel 1.5mm grille
• High power output and low distortion
• Trapezoidal array design
•Pole mount socket (LX12, LX15, LX15B, LX18B, LX18MB) for portable sound system use
• PRO-TECH™ Integral High Frequency Driver Overload protection*
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LX(E) SERIES MULTI-PURPOSE LOUDSPEAKER SYSTEMS
* PRO-TECH™: The LX & LX-E series speakers are equipped with The PRO-TECH™ System - a dynamic tweeter protection circuit, composed of an accurate and sensitive protection lamp. When high signal levels are present that may pose a dangerous overload for the tweeter coil the protection circuit will acti­vate immediately to limit the power sent to the transducer.
Unpacking
All Wharfedale products are fully tested and inspected before leaving the factory. After unpacking your loudspeaker please inspect it for any physical dam­age. In the unlikely event of damage caused in transit please contact your Wharfedale dealer immediately so that a written claim for damages can be made. Please retain the shipping carton and all packing materials in case the unit needs to be returned.
Cables and connections
All Wharfedale LX loudspeakers are fitted with a pair of 4-pole Neutrik Speakon™ Connectors. The two connectors on each loudspeaker are wired in parallel allowing two cabinets to be wired together from a single amplifier. When choosing speaker cable a professional grade of cable with an overall round sheath will be harder wearing and easier to handle than hi-fi figure-of-eight cables. Cables should always be coiled freely and not coiled over the hand and elbow which forces the conductors to twist within the outer sheath making the cable difficult to handle. Speaker leads should be made with a minimum of 2.5mm csa (12 gauge) cable. However for cable runs over 50m a minimum of 4mm (10 gauge) cable should used.
Speakon Pin Assignment
1+ Full Range + 1– Full Range – 2+ No Connection 2– No Connection
Amplification & Power Handling
Wharfedale Pro loudspeakers should be driven by professional quality amplifiers capable of providing adequate headroom when operating at high levels. A low powered amplifier with insufficient drive capability will not allow the full performance of the loudspeaker to be realised. A low powered amplifier is also more likely to be driven into clip and damage to your loudspeakers.
Amplifier clipping commonly occurs when amplifiers are used that are too small for the loudspeakers. If these amplifiers are driven beyond their maximum recommended limit the output from the amplifier is clipped. If a clipped signal is fed to a loudspeaker, it will not only detract from the sound quality, but can cause permanent damage. [Clipped waveforms tend to heat up the speaker voice coil while driving it out of the magnetic gap resulting in the loud­speaker overheating and failing]. Some amplifiers have a soft clip function which helps to round off the edges of clipped waveforms. However, an external
Page Three
LX(E) SERIES MULTI-PURPOSE LOUDSPEAKER SYSTEMS
limiter, or crossover with limiting built in, will stop amplifier clipping and ensure long life from your enclosures. [Note: Limiters must be adjusted to suit amplifier sensitivity. Refer to limiter or crossover manufacturer’s literature.]
Equalisation
Wharfedale LX(E) loudspeakers are designed to have a flat frequency response that does not require any equalisation to compensate for design inadequacies. Only need small levels of equalisation may be needed to compensate for difficult acoustic environments. Over equalisation can reduce system headroom, and introduce phase distortion resulting in more problems than it cures. If equalisation is required then it should be applied gently and smoothly using a professional quality graphic or parametric equaliser.
Arraying - LX (E)
When building arrays of loudspeaker cabinets it is important that the coverage patterns of each loudspeaker do not overlap each other. This creates an effect known as comb-filtering resulting in an uneven frequency response that varies as you move around the room. It is much better to point each loud­speaker to a different area of the room rather than to face them all the same way.
To create a seamless wide (130 degree) horizontal coverage using two LX -E cabinets they should be arranged as shown below with an angle of approxi­mately 50 degrees between the cabinets. By placing the cabinets as shown minimal dispersion pattern overlap is achieved, guaranteeing an even frequency response throughout the listening area. It is also possible to stack the cabinets vertically where greater vertical dispersion is required.
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