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Welcome to the April edition of Danley's newsletter.  We hope you'll take a few minutes to read about some of what is happening at Danley Sound Labs.  We think you will especially enjoy this "holiday" version of Tech Corner!  Amps, Team Members of the Month, Core Values, a recent install; it's all here.  Enjoy and let us know if you have questions or comments.
New Stuff at Danley

Professor Doug Jones

I know that I promised an article on FIR filters, and I will get to it, but there are so many very exciting developments here at Danley Sound Labs that I just had to take a moment to share them with you.

First I want to introduce you to the latest member of our engineering staff Dr. Dan Tomley.  Dr. Dan holds two terminal degrees, a Dhp from TIM, and a DsiFi from Asimov University.  His specialty is the quasi-asymmetrical cross–correlation of K-band horns.  We expect to be implementing some of his QUACCK ideas in our products in the very near future.  Already Dr. Dan has revolutionized the way we think about horns.  He was able to show us that although the Synergy Horn certainly has merit, the drivers in the horn are not really putting out as much as they could.  Dr. Dan has designed a new series of Marturion horns where the drivers connected to it, do in fact give it their all!

Dr. Dan has also done some work on our sub-woofer line.  He found that the tap in the tapped horn was severely limiting the ultrasonic behavior of the sub.  By replacing the tap in the sub with a stub in the sub and utilizing a piezo-electric transducer in the stub in the sub we are not only able to produce very hard rock levels due to the presence of the piezo elements, but in addition the piezo's produce that elusive crystal clear sound, and have the added benefit of being able to levitate small objects.  Work is continuing on a 3-axis version.

We at DSL always strive for the superlative.  The first generation of horns using the paraline were felt to be not quite up to the full potential of what the paraline was able to offer.  Dr. Dan challenged the whole engineering team to take it to the next level.  We, therefore, abandoned the parabolic curvature at the center of the old SBH series along with the inefficient passive alignment and replaced it with a Hyperbolic Active Alignment, HAA.   If the parabolic went to 10, the hyper-active goes to 11 and exhibits the lack of focus so important in these horns.

Many of you have experienced our Jericho line of horns.  They are named after the Biblical story of Joshua bringing down the walls of the city of Jericho using horns.  Dr. Dan realized that this sort of wall blasting performance is well within our reach.  He created a new Hypergolic driver, which can really deliver the maximum bang for the buck.  When the hypergolic driver is combined with the Marturion horn, the results are far more than stunning!  Walls come down!

Dr. Dan’s most exciting contribution to date came in late fall of 2017 when he in conjunction with Non-Linea systems produced the world's first anticipatory delay network. Known as the Delayed Exponential Logarithmic Recursive Algorithmic Network or DELORIAN this network produces a signal on the output that anticipates signal on the input. Actually, others have done this to varying degrees of success but they just don't know it yet.  The real breakthrough came when Dr. Dan accidentally spilled some trichloroethylene on his circuit board reducing the amount of flux on the capacitors.

Stay tuned for more amazing breakthroughs from the mind of Dr. Dan Tomley.  Now back to FIR filters…
 
Featured Install

Danley is proud to highlight the new audio system at Seventh Street Christian Church in Richmond, VA installed by our friends at RTW Media.  By utilizing two Danley SBH20's and 2 SHmini's, RTW was able to create an amazing sound while not creating a distraction from the aesthetics of the room.  According to RTW, the church loves the way the work was done and the way the system sounds.  Great job guys!
 

Team Members of the Month

This month we are proud to feature our customer service representatives, Chris Carlton and James O’Neal.  When you call Danley Sound Labs, you will almost always speak to one of these men first.

Chris Carlton handles most of the dealers from central USA all the way to the west coast. He is a Truett-McConnell College graduate and brings valuable customer service and management experience from companies including Chick-fil-a.  Chris has also been very active in church program positions, such as Recreation Director and Camp pastor. Chris is very quick to answer calls and when he’s not smiling on the other side of the phone, he is usually seen hustling around to various departments to get all the details of your orders processed as expediently as possible.

James O’Neal handles the remaining dealers in the States.  He is also responsible for all of our international distributors and dealers. James is a University of Georgia graduate and brings strong analytical and customer service skills to Danley having previously worked in various positions at Recall Corporation. He is also currently assisting in getting our CRM system up and running, using his extensive experience in this area.  James is very active in his church as well and has worked as a student ministries Intern.

We are pleased to have both of these gentlemen on the Danley team!
Danley Core Values: Innovation
It has been a couple of months since we talked about Danley's core values.  We covered integrity and service.  This month, we want to talk about "INNOVATION."

When you think of innovation, what companies jump to your mind?  Amazon, Tesla, GE, Bell, Keurig, Ford, Chick Fil A, Apple, Nokia.  Each of these could be described as innovative.  The thing about innovation is that if a company is not careful, their respective industry will pass them by.  Nokia is a good example.  Nokia was very innovative in the 90's in the cell phone market.  However, as a company, Nokia was slow to make the leap into the smart phone market.  Nokia lost her place as a leader due to a lack of innovation. 

Danley Sound Labs never wants to be in that situation.  We are proud of the fact that we make the most innovative loudspeakers in the world.  For example, what other audio company could cover the majority of 70,500 seat Kinnick Stadium at the University of Iowa with ONE speaker?! 

We won't stop there.  The innovative speakers in the Danley line are not a ceiling above which we cannot go.  They are a floor upon which we stand to reach even higher! 

Danley Sound Labs values innovation.  Take a look at our product line and you'll agree.
 
DNA Amplifiers - Monitoring on a Network 
Over the last couple newsletters some very interesting DSP features of the DNA series products have been covered. This month the ability to monitor amplifiers and loudspeakers across the network is going to be discussed. 
 
As has been mentioned previously, the DNA 20K4 Pro, DNA 10K4 Pro, and DNA SC48 all connect to the computer via a standard Ethernet network. There are standard Ethernet jacks on the back of these products that allow a typical Ethernet network to be assembled using a standard Ethernet switch. This can allow several devices on the network to all communicate with the computer at one time. Thanks to a few really handy features in the software, it is possible to monitor what is going on with both the amplifiers and the loudspeakers. 
 
Amplifier Current Draw
It is possible to control and monitor how much current the amplifier is drawing from its power cord. On the setup page, there is a control called EBP or External Breaker Protection. This control can be set to limit the amount of current the amplifier draws from the power system. Proper use of this control can keep the sound system rocking instead of tripping the power breakers all night long. The minimum value this control can be set is 9.0 Amperes. This means that it is possible to put two amplifiers on one 20A circuit together and instead of tripping the circuit, they can limit their output instead. Right next to the EBP control is the read out that informs what the amplifier’s current draw is at this time. When the amplifier is on with no input signal, this value is typically around 2 Amperes. When in standby mode, this value is about 0.5 Amperes. The displayed value will change to inform the current state of the amplifier’s current draw. These current draw values are plotted in a graph on the utility page which can be accessed by clicking on the page tab that looks like a gear. 
 
Amplifier Device Page
The Utility Device page shares a lot of useful information about the current state of the amplifier. There is a graph of the power supply’s current draw, a graph of the “DC Link Voltage” (which is the DC reservoir in the amplifier), and a graph of the amplifier’s thermal capacity status. There are also entries that offer the fan speeds, number of power cycles, number of brown out and over voltage events, and power supply start up protection events. The firmware version of the amplifier is also available on this page. This page is a wealth of information regarding the current health of the amplifier overall. It is good to be familiar with what this page normally looks like so it is easy to spy aberrant behavior. 
 
Amplifier Output Page (a.k.a. that’s all nice, but what about the loudspeakers???)
The DNA series amplifiers are very advanced amps that are constantly monitoring what is going on with the loudspeakers that are connected. After clicking on the page with the little gear icon, there are tabs to the right which allow selection of the device (as discussed above) or each of the output channels. On each page there are graphs for driver current (which is the current the amplifier is sending to the load), driver impedance (this is the impedance that the amplifier measures across the output terminals), and protection limiting (this graph shows how aggressively the DSP limits the output of the amplifier for various reasons). There are also entries on the page to describe the current driver impedance, minimum and maximum impedance values, the load for which the amplifier is configured, and various fault state events. The amplifier may be configured on this page for low impedance operation or 25V, 70V, or 100V constant voltage operation. It is also possible to specify a minimum and maximum impedance that should be measured by the amplifier. This can be extremely handy in identifying when the loudspeaker is either in the process of failing, or has failed. When these controls are set appropriately and the value of the connected load falls outside the prescribed values, the amplifier monitoring flag in the system view will change from green to yellow to indicate that there is a problem that needs to be investigated. 
 
It is clear that the DNA series amplifiers are appointed with many advanced features that allow an advanced operator deep inside knowledge regarding the current state of the amplifier’s health and the health of the connected loudspeakers with a simple Windows computer, laptop, or tablet that is connected to a standard Ethernet network. 
 
Please stay tuned for the software update to System Engineer. It is coming soon! 
 
The current version of PodWare is 6.24.04. This version is available for download from our website:
The current version of firmware for the DNA 10K4 Pro and DNA 20K4 Pro amplifiers is 1.238.
 
The current version of firmware for the DNA SC48 is 1.364.
 
Loudspeaker Master Preset Stack version is 20161020
 
The firmware and loudspeaker presets are included in the PodWare download zip file for PodWare 6.24.04.
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