Martin Audio DDX Series User manual

User Guide
DDX Series
Loudspeakers
V1.0

Copyright © 2020 Martin Audio Ltd. 2
DDX USER GUIDE V1.0
DDX USER GUIDE
Contents
Introduction
DDX Series 4
Safety First 4
Coaxial Differential Dispersion Technology 5
Accessories
Wall Brackets 6
Yokes 6
Eye Bolts 7
Pole 7
Installation
Pole Mounting 8
Stacking 8
Wall Mounting 9
Eye Bolts 12
Suspending the Cabinet 13
Mounting Location 13
First and Second Stage Fixing
First Stage Fixing 14
Second Stage Fixing 14
Grille Removal and Driver Rotation
Grille Removal 15
Driver Rotation 16
Badge Rotation 17
DSP and Amplication
DX0.5 18
DX4.0 and iKON Amplifiers 18
Using Alternative Processors 18
Specications
DDX8 19
DDX10 19
DDX12 20
DDX15 20
DDX118 21

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Technical Drawings
DDX8 22
DDX10 23
DDX12 24
DDX15 25
DDX118 26
Loudspeaker Bracket Dimensions
DDX8 27
DDX10 and DDX12 27
Warranty
Warranty Statement 28
Copyright and Trademarks
Copyright and Trademarks Statement 29

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DDX USER GUIDE
Introduction
DDX Series
Thank you for purchasing this Martin Audio DDX loudspeaker system.
The Martin Audio DDX Series has been designed to deliver high performance sound in permanent installations or as a portable system.
All DDX loudspeakers are constructed from birch/poplar plywood and finished with a durable black textured paint, with white a white option
available to order.
DDX full range loudspeakers use two-way, full-range patent protected coaxial differential dispersion drivers. They have an internal passive
crossover for cost effective and easy deployment.
The DDX118 subwoofer uses a high performance 18” driver in a cabinet tuned to give best possible performance.
A range of installation accessories is also available. Wall brackets is suitable for first and second fix construction industry conventions.
The user guide provides a detailed explanation of the DDX’s features and options. Please take the time to read through the guide before
deployment.
Safety First
Professional loudspeakers can produce high sound levels and should be used with care. Hearing loss is cumulative and can result from
levels above 90dB if people are exposed for a long period. Never stand close to loudspeakers driven at high level.

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Coaxial Differential Dispersion Technology
All DDX Series full-range models feature Martin Audio’s unique, patent protected coaxial differential dispersion technology.
Non-coaxial systems can suffer from uneven frequency response in the crossover region because of interference between the LF and HF
sections. Depending on the listening position, this causes off-axis variations in frequency response.
A disadvantage of conventional coaxial devices is that coverage angle reduces at higher frequencies, due to inadequate waveguides. DDX
devices overcome this by using a static waveguide that merges seamlessly with the unique cone shape, maintaining the dispersion pattern
even at very high frequencies.
A differential dispersion driver has an asymmetric coverage pattern. Wide coverage at the bottom of the vertical coverage angle and
narrower at the top. This covers the target area more evenly than a system with a conventional, fixed-dispersion type driver as the wide
section covers more audience in the near field, and the narrow section projects sound better to the rear of the space.
Conventional X x Y loudspeaker coverage DDX driver coverage

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DDX USER GUIDE
Accessories
Wall Brackets
The DDX rear mounting configuration is compatible with Martin Audio wall brackets. These two-part brackets enable the wall mounting
section to be installed during the first stage fix when cables are run. The cabinet section can be fitted to the loudspeaker and installed
during the second stage fix detailed on page 14.
The brackets for each model are as follows:
DDX8 WB6/8B
DDX10 WB10/12B
DDX12 WB10/12B
DDX15 N/A
Yokes
A yoke to fly the DDX12 or DDX15 from a truss clamp or other suitable fixing is available.
The brackets for each model are as follows:
DDX12 CDDLYA12
DDX15 CDDLYA15

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DDX USER GUIDE
Eye Bolts
All DDX Series loudspeakers have threaded inserts available for flown applications in fixed installations. Full range cabinets have M8 inserts
and subwoofers have M10 inserts. The inserts can be used for fitting bespoke flying hardware or eye bolts. These must be forged steel
shouldered types certified with a safe working load of the cabinet weight.
Do not be tempted to use formed steel types commonly available from DIY stores as they are unsafe for flying heavy loudspeaker cabinets.
Correctly rated shouldered eye bolts are available from Martin Audio as an optional accessory.
Part numbers:
M8 HTK00003
M10 HTK00004
Pole
DDX loudspeakers have integral pole mount “top hat” 35mm fittings for use with regular 35mm loudspeaker stands and accessories. The
pole mount in the subwoofers accommodates a distance pole for DDX full-range cabinets.
Part number:
Pole HTKCT04

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DDX USER GUIDE
Installation
Pole Mounting
When using poles or stands, the following precautions are advised:
• Ensure that the stand will support the weight of the loudspeaker by checking the stand manufacturers rating. (See the technical
specifications for individual DDX weights and dimensions.)
• Make sure that the stand is placed on a level surface and that its legs are fully extended.
• Do not place more than one loudspeaker on each stand.
• Run cables so that they do not present a trip hazard which could pull the loudspeaker over.
• When used outdoors in the wind, it may be necessary to add some weight to the base of the stand.
• When using a pole mount with a sub-bass system, observe similar precautions.
Stacking
• Ensure that the floor or stage is level and solid.
• Do not stack loudspeakers too high outdoors where winds could topple the stack.
• Be aware that loudspeakers producing very high sound levels can move or creep. To avoid this, place friction material between the floor
and loudspeaker and between each loudspeaker or use strapping to secure the stack.

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DDX USER GUIDE
Wall Mounting
DDX8, DDX10 and DDX12 may be wall mounted either in portrait or landscape orientation.
Do not forget that it is important to rotate the driver through 90° when using a DDX cabinet in landscape mode. Please see the chapter on
grille removal and driver rotation for details on how this is achieved.
Installation is a two-part process in common with standard first fix and second fix procedures, installation using both sizes of brackets is
identical, the WB10/12 bracket is just larger than the WB6/8 version.
The first step is to separate the two halves of the bracket. There are two horizontally mounted nut and bolts holding the two halves together.
The upper one which sits in a curved slot does NOT need to be removed. Unscrew the lower bolt and the cabinet bracket will lift off the
wall bracket.
Speaker Section Wall Section
First fix is to secure the wall section of the bracket. This is the part with four mounting holes, a vertical bolt holding the section which
allows horizontal adjustment and the slot into which the cabinet bracket bolt sits. Use appropriate wall fixings suitable for the composition
of the wall. These must be of sufficient strength to support the weight of the loudspeaker; 8kg for the DDX8, 14kg for the DDX10 and
17kg for the DDX12.

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The next step is to attach the cabinet section of the bracket to the cabinet. This is the bracket with four countersunk fixing holes on a
square pattern with the horizontal bolt in the curved slot.
The rear of the cabinet has six countersunk bolts fitted designed
for use with the mounting brackets. For portrait mode remove
the lower four bolts, for landscape mode remove the middle four.
Position the bracket over the required holes that suit the
orientation required and screw into place tightly using the bolts
removed from the cabinet.
For landscape orientation use the four holes closest to the middle and attach the bracket at right angles to the cabinet.
You are now ready to fit the loudspeaker to the wall. Offer the loudspeaker up to the bracket so you can hook horizontal bolt in the curved
slot onto the notch on the ball bracket. Make sure that you follow appropriate safety measures if you are working at height such as using a
scaffold tower or lifting platform which allows you to safely use both hands for this.