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Here in Georgia, we are in the midst of "Dog Days":  that time of year when the weather is typically hot and sultry.  Things around here tend slow way down during Dog Days.  But that is not the case here at Danley Sound Labs!  Things are hopping!  Demos are happening every week.  We are expanding our capacity by moving into a new building.  Orders are coming in for Danley product to meet audio needs in a variety of venues, from stadiums, to restaurants, to theaters and more.  Take a few minutes to read this month's newsletter and learn more about the activities going on around here!
Team Member of the Month
This month’s team member spotlight is Alex Shillo with Lienau AV. Alex’s territory
for Danley is New England and Upstate NY.

Alex is a graduate of the Hartford Academy of the Performing Arts where he
studied creative writing and music. He is an accomplished guitarist, bass player,
drummer and songwriter with more than ten years of recording, engineering
and live production experience. Alex has appeared on many recordings as a
studio musician and this year released his first solo EP through TNA records which
features members of Billy Joel’s band. Alex performs regularly in New England
and New York.

Alex began his professional career working for a national distributor of pro
audio products where he gained valuable industry insight and product
knowledge as a sales support specialist. He later went to work in pro audio sales
for a major national retailer before joining a New England based independent
rep firm, representing manufacturers of high end digital mixing consoles,
commercial loudspeakers for the live production and HOW markets, and video
products. Alex joined the Lienau AV team in December of 2016 and has quickly
become an integral member of the Danley team.

Alex Shillo
Lienau AV Associates
Kupendwa Update
The deadline for gifts to Kupendwa, the ministry to young women and children in Uganda, is fast approaching.  If you haven't donated, but still would like to, please follow the directions below.

We need to receive these donations by August 26, 2017. 

Your tax-deductible gift can be mailed to:
North Georgia Community Foundation
615 F Oak St.
Gainesville, GA 30501
Please make your check payable to North Georgia Community Foundation and in the memo line please note Hedden Fund/Kupendwa.
Danley Expands Manufacturing Space
The growth of Danley's Molded Product Requires Expansion of Manufacturing Space

Danley is often thought of as the company that can cover massive stadiums with a small number of power house speakers.  While that is true, it is only part of the story.  Danley's line of molded products: the OS line, GO2 and Nano, is becoming a major competitor in whole new market segments.  The price point and the short lead times, thanks to US manufacturing, combine to create a very desirable product for a variety of applications.  And of course, these speakers come with typical Danley fidelity and pattern control.

The growth in sales of these products had created a space problem.  That problem was remedied when Danley moved molded product and crossover production into a new 5000 square foot facility only three doors down from Danley's headquarters in Gainesville, GA.  Our production team will have room to spread out a bit and set things up for a more efficient manufacturing process.  This move also allows us to drastically increase output of these products which means Danley will continue to lead in the areas of availability and short lead times. 
DNA Eight Channel Amps
InfoComm2017 was an exciting show and no one felt it more than Danley Sound Labs. There were a lot of exciting things to see and hear in the demo room. However, those who ventured out to the Danley Sound Labs booth on the show floor were treated with the opportunity to see the new eight channel Danley Sound Labs DNA series amplifiers. 
Danley Sound Labs introduced two new DNA series amplifiers, the DNA 10K8 Pro and the DNA 3K8 Pro. Both of the new eight channel amplifiers share a lot of features in common with the DNA four channel Pro series amplifiers. These features include:
-Four analog inputs with thru connections
-One AES3 input
-Available with or without Dante
-Ethernet communications for software control with System Engineer
-2 Rack units tall
-Front panel for easy operation without a computer
-Four Neutrik NL-4 loudspeaker connections on the back panel
-Aux port on the back for connecting to power sequencing systems and fire mute systems
-Neutrik 32A Powercon Power Inlet connector for the built in universal power supply
-Pairs of channels are able to be bridged for higher output
-Selectable to directly drive 25V, 70V, and 100V lines on a per channel basis
-96KHz sampling rate for all DSP operations
-Powerful grouping and multilayer control of gains, delays, and EQ
-Designed and manufactured in the United Kingdom
The DNA eight channel Pro series amplifiers are just like the four channel amplifiers with two exceptions:
1. There are twice as many channels… obviously.
2. The eight channel amplifiers are capable of the same output power into all loads. 
Wait, what is that? Yes, that is correct. The DNA 10K8 Pro amplifier outputs 1250W into an eight, four, or two Ohm load and 70V and 100V loads as well. Meanwhile, the DNA 3K4 Pro amplifier is capable of 400W into all loads as well. There is a DSP setting in the amplifier channel that must be adjusted to the load for maximum output. 
DNA 10K8 Pro
8 Ohm = 1250W
4 Ohm = 1250W
2 Ohm = 1250W
70V = 1250W
100V = 1250W
DNA 3K4 Pro
8 Ohm = 400W
4 Ohm = 400W
2 Ohm = 400W
70V = 400W
100V = 400W
The DNA 10K8 Pro and DNA 3K8 Pro amplifiers are available now, so contact your dealer for pricing and availability. 
The current version of System Engineer is 7.00.15. 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 1.306.
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:
The Decibel, Part 1
Prof. Doug Jones
In my quest to cover the basics here in the Tech Corner, I think it is time to tackle what is arguably the most misunderstood and misused tool in audio; the decibel.

The decibel has its roots back in the early days of telegraph and telephones.  Remember when your telephone was connected to every other telephone by wires?  Engineers needed to know how much power loss there was between various devices, as power was a precious commodity.  Amplifiers were costly and inefficient so conserving every watt of power was critical.  Accounting for the loss in telephone cable was a big deal.  For example, how much power do you loose through a mile of telephone wire? They realized that measuring the power in watts at one end and then measuring the power at the other end was cumbersome. The actual number of watts was not the issue.  They needed a way to quantify the loss in a cable.  Not surprisingly, the first attempt at quantifying the loss was called the MSC or Miles of Standard Cable.  In the 1920's, it was proposed that the unit be called the Bel in honor of Alexander Graham Bell, with the working unit being one tenth of a bell or the decibel.  Lets see how this works.  The decibel is calculated in the following way:  dB = 10 X log base 10 of the ratio of powers.   So lets say we apply 10 watts to one end of a telephone line and at the other end we measure 5 watts.  Do the math and we see a -3 or a 3 dB loss.  That 3 dB loss would be there no matter what we start with.  100 watts in would result in 50 watts out = 3dB loss.   842 watts in would result in 421 watts out:  3 dB loss.  .5 watts in would result in .25 watts out, 3dB.  What is cool is that if you flip the numbers, so if you put 20 watts into something and 40 watts came out, you have 3 decibels of gain!   Pretty Nifty!  So now the various segments of cable or networks could all be described by their loss or gain in decibels.

So we see that the decibel has at least 2 features that make it attractive.  It deals with ratios, so it is perfect for things like gain and loss and things like signal to noise ratios.  The other thing that may not be so obvious is that the decibel handles really large numbers very well.  A change of one million watts to two million watts is still a 3 dB change!  But there is a third feature that makes the decibel even more valuable to us in audio, and that is the very logarithmic nature of the dB.  I am fascinated by the fact that the way we have chosen to quantify and measure our universe is not often the way that we experience the universe.  Our senses do not follow the nice linear progressions that most of our measurement systems do.  For example, lighting one candle produces a certain amount of light.  But 2 candles do not seem to be twice as bright as one.  In fact, doubling the number of candles does not make it twice as bright no matter how many candles you have.  The same is true in the perception of sound.  Two equal sound sources combined together will not create a sound twice as loud as one.  As it turns out, our senses are much closer to being logarithmic than linear, and the decibel system is well suited for describing changes in ways that feel right to our senses.

One of the drawbacks, maybe, to the decibel system is that in its basic form it cannot be used to determine absolute values.  We know that a certain amount of telephone wire creates a loss of 3 dB, but we have no idea of the number of watts present at either end of the wire, only that there is 3 dB more at one end than the other.   But watch what happens if we designate one of the two power variables as a reference.  If we set p2 equal to 1 milliwatt for example, and, - this is very important-  designate this new form of the dB as a dBm where the m stands for milliwatt, then we have added a whole new tool to our tool box.  We can speak of a 3 dB gain or loss which is relative, or we can use the dBm to indicate an absolute number of watts.  So, a level of +4dBm, which is 4 dB above 1 milliwatt, is equal to 2.51 milliwatts or .00251 watts.  So, 3 dB is an expression of a ratio and is blind to actual amounts involved, but 3dBm is an actual measurement of a quantity of power expressed in milliwatts.

This is all pretty useful stuff.  But, there is a catch.  Remember that the decibel, by definition, is a ratio of POWERS.  So is the dBm.  The dBm tells you the actual value of the power because you know the starting point, 1 milli-watt, but it is still the ratio of 2 powers; one of them known.  What If I don't care about power? Can I still use the Decibel?   That, my friends, is for next time!
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