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As the seasons transition, so does Danley Sound Labs.  One of our core values is innovation.  We are constantly working to add new products to our lineup.  At the same time, we are making improvements to our existing products.  Keep reading to find out how our molded line continues to expand to meet your needs.  You'll also read about a new dealer certification process as well as the always popular tech corner and amplifier articles.  Enjoy!
Doug Jones to Speak at AVEXPO in Denver on Oct 26, 2017
Professor Doug Jones will be speaking again this year at AVEXPO in Denver, CO.  His topic will be: The Ear as Analyzer:  What You Can Learn About a Loudspeaker by Actually Listening
 
Here is a brief synopsis:  Are we forgetting what loudspeakers should sound like? Have we forgotten what good loudspeakers are capable of? It seems as though the market is dominated by personal devices and ear buds. This seminar / workshop will present: ways to listen to speakers, what to listen for, and what it means for a loudspeaker to be accurate.
 
If you are in the Denver area on Thursday, October 26, plan to be in the Flatirons Pavilion for Doug's presentation at 1:15 PM.

Feel free to contact Danley representative, Noel Darby (noel@darbyreps.com) for more information.
Danley Now Offering New Options on Molded Product Lines
Due to the ever-increasing popularity of Danley's US-made, molded product lines, we are now able to offer additional color choices for the OS, Nano, and Go2.  We are also offering different weatherization levels on these products. 
 
In addition to weather-impervious gray, Danley is now offering the OS line in black, with or without the hydrophobic grill.  If you have an indoor installation where the speaker needs to disappear, consider the OS in black.  Sound this great shouldn't be limited to outdoor applications! 
 
Interested in the Danley Nano?  We are now making this remarkable speaker available without the 70-volt transformer for applications where less weight or only low impedance outputs are required. There also will be slight cost saving on this version as well.  Choose black or white when ordering the Nano.
 
Finally, the Go2 is now available in black, white or gray.  It is also available with the optional AR (Aqua Resistant) weatherization upgrade which is warrantied for 3 years.
RTW Media is First Certified Danley Designer
RTW Media of Richmond, VA has recently become Danley Sound Lab’s first “Certified Danley Designer”.  Skip Welch, Eastern Regional Manager for Danley sound labs explains, “The program has been designed to empower our dealers to gain an in-depth understanding of our patented technologies like the Synergy Horn, Tapped Horn and Paraline, and how they are best employed. These, as well as many other unique Danley technologies, allow our dealer network to offer the end user a high level of performance.”
 
RTW Media was very enthusiastic about being the first dealer to go through the certification process with Danley Sound Lab’s Doug Jones, who is the Director of Danley University, the educational arm of the company. The program is
designed to promote proficiency in 4 key areas; Danley technologies, Danley’s software suite (Direct design tools and System Engineer DSP software), general sound system design and advanced measurement tools in the commissioning of systems.
 
“I’ve never had so much fun in the classroom. Doug is awesome. I am now proficient in Direct, Sketchup, and System Engineer. Danley makes the engineering and design process so simple once you are familiar with the programs.” commented Nathan Harris, RTW Media Engineer.
 
“Doug is brilliant, enthusiastic, and a great teacher. From account managers to field technicians to engineers, he was able to shift gears and help each member of our team learn on a level they were comfortable with,” added Zack Guida, RTW Operations Manager.
 
The program will be launched nationally in 2018 and will be offering classes regionally throughout the year.  More details will be coming soon.

Contact your Danley Regional Manager for more details.
 
Product Line Discontinued
Please note that as of September 2017, the “Pure Groove” product line has been officially discontinued due to a smaller demand over the last three years than was anticipated when the line was conceived. If you or your customers are looking for products for the club and production market, we suggest you contact your local Danley sales representative for other Danley speakers that will meet your requirements.
Why Danley Won't Build Line Arrays PT1
Prof. Doug Jones
 
Danley is a relatively small loudspeaker manufacturer.  The majority of the "big guys” build line array systems and make scads of money doing so.  We don't.  Some would ask why not?  Over the next few installments, I’m going to try to make the case for not caving from the pressure and building “me too” line array systems.
 
In order to do this right, we have to review some physics, so bear with me!
 
The Point Source
 
Sometimes we need to take complex problems and represent them with over-simplified solutions in order to begin to make sense of what we observe.  Electro-Acoustics is a field where we do a lot of oversimplifying, often because the phenomena we are dealing with are invisible and may be hard to grasp when we can’t see what is going on.  The idea of a point source is one of those over-simplifications.   There is really no such thing as a point source.  It is a mathematical fabrication, which is extremely useful for helping us understand how sound waves propagate and how we might control them.  If we could build an acoustic point source, it would be infinitesimally small (actually having no dimension at all) and would create sound waves that would travel in all directions equally well and at all frequencies.
 
There are a few problems with this oversimplification. First, in the real world, everything we build has some sort of mass and dimension to it.  We simply cannot build a point.  The second problem with this model is that, in acoustics, the way that sound waves actually interact with the real world is dependent on the relationship of the wavelength of the sound wave to the size of the elements in the universe in which the wave is propagating.   Another way of saying this is that in acoustics, nothing is large, nothing is small, it is all relative to the wavelength.  We cannot build a point, and we cannot build something that behaves the exactly the same way at all frequencies. As I have said before, this is what makes audio, especially loudspeaker design, so interesting and challenging. We have to cover 8 octaves!
 
As it turns out, the point source model works pretty well when you have small transducers producing wavelengths that are much larger than themselves.  This is due to the nature of how moving elements (especially pistons which make up most of the loudspeakers on the market) behave in the soup of air in which we exist.  So, although a 15-inch woofer is a pretty large device (compared to a point), when you put it in a box it behaves pretty much like an ideal point source. At 50 Hz, the 15-inch woofer in the box exhibits all the characteristics of a true point source.  The sound seems to emanate from some point inside the box, and it radiates equally in all directions, creating a sphere with the speaker at the center.  In free space (a space with no boundaries to create reflections), it would follow the famous “inverse square law”.  As you double the distance from the source, the sound pressure level drops 6 dB. And, this would be observed at any position relative to the speaker. The speaker would not have to “point” in any direction.  Indeed, the notion of “pointing” a point source is kind of pointless!  Things get interesting, however, when we choose other frequencies.  What will happen when we double the frequency, cutting the wavelength in half?  Now the 15-inch speaker is creating a wave which will travel 11 feet or so in the completion of one cycle.  That is still large relative to the 15-inch speaker.  It will still be a pretty good point source, but the apparent source of the sound will have changed slightly.  It will appear to originate from a slightly different place inside the speaker box than the 50 Hz wave did.  If you keep increasing the frequency, at some point, you will notice that things begin to look very different.  At 1000 Hz, this 15-inch speaker is larger than the wave is long.  It is no longer a point source and cannot be modeled as one. It will be very directional, exhibiting what is called beaming, and the level will not fall off exactly as the inverse square law would dictate. The apparent source of the sound will have moved, and the efficiency will be much less then it was at 50 Hz.
 
It is one thing to imagine and to describe what is going on in a loudspeaker at discrete frequencies.  Now imagine what is happening when music is sent to the loudspeaker.  Everything changes depending on the frequency of the music!  Virtually everything about the speaker is dynamic, that is to say, changing.  The apparent source of the music is changing with frequency. The directional pattern is changing with frequency.  The efficiency is changing with frequency.  And to make matters worse, as you change your observation point, the speaker will appear to change.  None of this is the behavior of a point source.  Remember, a point source, by definition, would always be smaller than the wavelength it is producing!  If we could magically build one… wow!
 
Of course, most loudspeaker systems are not a single driver in a box.  To try to overcome the difficulties associated with reproducing waves that range from over 40 feet long to less than an inch long, designers have traditionally turned to using multiple drivers of different sizes and crossovers.  Of course, every time you add another crossover and driver the system moves further away from behaving like a point source.  However, if we could build a point source or a device that behaved like one, it would have the properties we desire most from a loudspeaker, and above all, it would sound the same everywhere in its spherical coverage.

A small loudspeaker producing 80 Hz
 
The same speaker producing 2 Khz 

I'll let you try to assimilate all this!  Next time I will introduce you to the line source and we will see how it differs from the point source in significant ways. 
Presets Versus Snapshots
By: Josh Millward
 
An excellent question was asked the other day: What is the difference between Presets and Snapshots. This article will expand that a bit to discuss the purpose of Component Presets, Module Presets, and Snapshots. 
 
Component Presets
In the DNA Pro amplifiers and the DNA SC48, presets are unique to the outputs. Generally speaking, a Component Preset recalls a range of DSP settings for a single given output. The Component Preset is the basic building block of presets and snapshots in the software. The Component Preset includes DSP settings for high pass and low pass filters with their attendant slopes, limiter settings, and equalization settings. There are presets available for the DNA series products for each loudspeaker manufactured, from the itty-bitty Nano to the massive Caleb. It is always recommended to use the provided loudspeaker presets whenever a Danley loudspeaker is being used. It is important to note that Component Presets do not contain any information regarding input routing, they only provide output DSP settings. 
 
Module Presets
Meanwhile, a Module Preset recalls more than one component preset. This is why a Module Preset is used for loudspeakers that require multichannel amplification, such as bi-amp and quad-amp situations found in the SH96HO and the Jericho series respectively. Essentially, a Module preset is a group of Component Presets which are recalled in the device in a specific manner. At Danley, we subscribe to the industry standard wherein low frequencies come first and higher frequencies follow. Ergo, when recalling a module preset for a bi-amplified SH96HO loudspeaker, the low frequencies will be on the first output channel and the high frequencies will be on the second channel. Since Module Presets are an assembly of Component Presets, they also do not contain any information about the input configuration of the amplifier. Module Presets only recall groups of Components. 
 
Snapshots
A Snapshot is essentially a picture of the overall amplifier configuration. It stores the input configuration and routing to the DSP’s and it stores which Module Presets are recalled for the outputs. This means that if Component Recalls were used to configure the amplifier, these configurations should be stored as module presets within the amplifier. When a Snapshot is selected it controls the input configuration, input routing, and Module Preset recall in the amplifier. Using Snapshots, it is quick and easy to reconfigure an amplifier for a series of different roles in a system. The various roles just need to be defined and configured ahead of time. 
 
Hopefully, this clarifies the roles of Component and Module presets and Snapshots. Have fun out there! 
 
The current version of System Engineer is 7.00.15. This version is available for download from our website:
http://www.danleysoundlabs.com/dna-system-engineer/
The current version of firmware for the DNA 10K4 Pro and DNA 20K4 Pro amplifiers is 1.306.
The current version of firmware for the DNA SC48 is 1.394.
Loudspeaker Master Preset Stack version is 20170424
The firmware and loudspeaker presets are included in the System Engineer download zip file for System Engineer 7.00.15.
DNA product videos can be found on our website:
http://www.danleysoundlabs.com/danley-u/dna-amplifier-and-processor-training-videos/
 
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