Tectonic Technical Video Library

Technology 'N Stuff .

The Tectonic Technical Library is a  21-part video series that explains the basics of DML technologies and offers quantitative explanations of how this all works.

We put our two chief engineers - world's leading DML expert and physicist Tim Whitwell and transducer & loudspeaker systems engineer Marcelo Vercelli - in front of the camera to answer and explain the BIG questions about DMLs, their performance and applications.

If you want to learn more about this method of propagating audio energy into large and difficult spaces, and you plan to be in the sound reinforcement business in the next couple of decades, you'll need to know what DML technology is all about and what it may provide to you.


Introductions to Marcelo Vercelli, chief applications engineer,
and Tim Whitwell, chief physicist.

Impulse analysis of DMLs vs. pistonic drivers and the
interaction with acoustic spaces.

Further explanation of DMLs vs. pistonic drivers and their
interaction with acoustic spaces.

Panel, exciter and mounting frame combine to make a very
wide frequency, wide dispersion diffuse output device.

How DML technology is scaled-up to large format sound
reinforcement applications.

Fundamental  differences between pistonic devices and DML's.
And how they're the same.

How the DML carbon fiber  / Nomex honeycomb panel is
excited to propagate audio energy.

Exciting the DML with electro-magnetic motors to induce
bending wave behavior and produce wide band-width audio.

How the DML propagates a very wide and diffuse output.
Deep Geek! How a DML panels acts like multiple drivers to
produce all frequencies within it pass band and propagates
it as a wide, diffuse, non-boundary interactive and stereo-
locatable source.

DML perceived loudness at varying distances-
and some low comedy…

Wide and diffuse propagation of pass-band frequencies from
a single flat panel device.

Why DMLs are more resistant to feedback than pistonic
speaker systems.

How a DML system's extremely low harmonic distortion
and phase coherency provide highly intelligible audio in
reverberant spaces.

How a wide diffuse DML can perform so well in
reverberant spaces.

How wide, diffuse output audio propagation can produce
a very accurate stereo image.

DMLs lack of odd-order harmonic distortion, lack of air
movement and how this effects system intelligibility.

Applying custom computer modeling to designing and
predicting DML behavior.

Non-pistonic DMLs and the issues of  their performance
modeling in predictive sound modeling software.

An overview of DML technology in real-world live sound
reinforcement applications.

The advantages that  DML technology provide to sound
reinforcement speaker designs.

More resources

Frequently Asked Questions (FAQs)

We understand that bringing a new technology and new way of doing things to sound reinforcement will raise a LOT of questions, opinions and doubts.  This Tectonic FAQ is a dynamic record of what we are asked on an ongoing basis. Hopefully your specific questions are answered here.  If not, we would love to hear from you, and we’ll be adding more FAQs based on your input!

Technical Documents Library

The Tectonic Technical Documents Library includes a technical overview provided by NXT® describing the basis of DML technology. Library contents continue on with a collection of published AES Papers describing the specific operation, characteristics and benefits of DML transducers and systems. Included are additional documents from other entities that have experimented with and documented DML characteristics and performance.