Introduction; Coaxial Differential Dispersion Technology; Dante - Martin Audio CDD-LIVE! Series User Manual

CDD‐LIVE
Introduction
Most self‐powered portable loudspeakers have been underpowered, light‐duty systems or very high‐end systems out of reach
of many users. Now, with the multi‐purpose CDD‐LIVE! Series, Martin Audio brings everything rental companies, system
integrators and musicians require from a self‐powered loudspeaker into sharp focus.
Comprising three full‐range models and two subwoofers, CDD‐LIVE! Covers practically all professional stand‐alone and
distributed applications — from sound reinforcement and monitoring for live bands, DJ's and corporate events, to installations
in dance clubs, ballrooms, theatres and performing arts centres.
Combining the 'point‐source' benefits of coaxial designs with the consistent coverage of Differential Dispersion technology, CDD‐
LIVE! Full range systems are optimised for optimum real‐world coverage exhibiting wide horizontal dispersion close to the
speaker at the bottom of the vertical dispersion which narrows to the top of the vertical coverage to ensure excellent power
delivery right to the back of the room. Thus all corners of the audience experience the same superb sonic quality.
On‐board Class D amplification, DSP and Dante™ Digital Audio networking assure simplicity of stage set‐up and efficient
installation, while tour‐grade enclosures and comprehensive mounting options — including pole mount, wall brackets, yokes and
rigging inserts — provide maximum flexibility in deployment.
With sonic consistency across the range, a rectangular coverage footprint and a multitude of deployment options, CDD‐LIVE! is
truly versatile — a professional self‐powered solution for a huge host of audio applications.
COAXIAL DIFFERENTIAL DISPERSION TECHNOLOGY
Introduced by Martin Audio with the launch of the CDD Installation Series of speakers, full‐range models feature unique,
patented Coaxial Differential Dispersion™ technology. CDD systems augment the 'point‐source' benefits of coaxial drivers with
the consistency of coverage which Differential Dispersion technology can deliver.
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, particularly close to the loudspeaker. In
contrast, coaxial systems aim to sum LF and HF contributions at all positions off‐axis, even close‐up.
A disadvantage of conventional coaxial devices can be HF beaming, where the HF dispersion reduces at higher frequencies. This
is primarily because the HF energy emerges through a narrow tube in the pole‐piece of the magnet system. CDD Series coaxial
devices overcome this by the use of a static waveguide that merges seamlessly with the unique cone shape — maintaining the
dispersion pattern even at very high frequencies.
A Differential Dispersion horn has a trapezoidal dispersion pattern in both vertical and horizontal planes which covers the target
area more evenly than a system with a conventional, fixed dispersion type horn. With a conventional horn, the speaker is usually
placed above head height and aimed towards the centre of the audience. This produces an imperfect coverage pattern which
misses out some areas — particularly side areas close to the loudspeaker.
In contrast, a CDD Coaxial Differential Dispersion system produces a rectangular coverage pattern extending to all corners of the
audience area, while wide horizontal coverage is achieved very close to the loudspeaker. The consistency of frequency response
and SPL thus achieved throughout the audience area is exceptional. The improved coverage close to the source also means that
CDD speakers can often be spaced further apart, reducing overall speaker count.
CDD‐Live marries this ground‐breaking technology with a class D amplifier in a robust ready enclosure to complement the CDD
installation range with a range suitable for portable applications or fixed installations where a powered product is required.
DANTE™
All models in the CDD‐Live range feature a class D amplifier with on‐board DSP and input to the systems can be either balanced
line level analogue or Dante™ digital audio. Introduced by Audinate, Dante is an uncompressed, multi‐channel digital media
networking platform, with near‐zero latency and synchronization. Dante has become the preferred digital audio networking
solution, a common platform that the industry had been trying to find for many years. It has been adopted by more pro‐audio
AV manufacturers than any other networking technology. Interoperability is not a dream of the future, but a reality today.
Hundreds of Dante‐enabled products are available from the world's leading manufacturers making interfacing a system with
CDD‐Live speakers extremely straightforward over inexpensive, readily available Cat 5 cable.
CDD‐LIVE User Guide V1.0
USER GUIDE
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