New Product Highlight

We are featuring the new PG-118 this month which carries all the attributes of our TH-118 with some additional features specifically designed for Dance Music. In addition to utilizing Danley’s powerful Tapped Horn design, this single 18” woofer equipped cabinet goes lower in frequency than the TH-118. At 30 Hz, the PG-118 requires half the power required to achieve the same output in the TH-118. The PG-118 also is designed to fit the exact footprint of the PG-96 (see insert picture) with interlocking skids so you can build a powerful matched stack! We have also added the Sentinel overload circuit to help protect your investment.

Please visit our website or contact your Danley Sales Representative for more information on how you can order yours today!

Fro Back February

Can you match the Danley Fro men in the pictures with the names?
 
Mike Hedden, Chief Steward in Charge, Co-Founder
Ivan Beaver, Chief Engineer
Jeff Pulliam, Director Communications/Personnel Development
JP Parker, National Sales Manager
Tom Danley, Director of R&D, Co-Founder

Kim Comeaux has recently taken over the entire Texas territory including OK, AR, LA, and TX. He was already one of the hardest working reps in the country doing daily demos, driving long distances, and working into the evening. But now, instead of just doing that in part of his territory, he does it across his whole territory and the results have been tremendous. Kim has proven that by doing the hard work and giving a demo things happen. Last week he did a J3-94 demo that smoked the installed 8 box line array... install to follow.

Let's take a look at another of Danley's core values.   We've already covered the mission statement: We desire to find favor and a good name in the sight of God and man through innovative loudspeaker solutions.  We also talked about our first core value:  integrity. This month, we want to look at "service." 

Here at Danley, we think of service in two primary ways.  First of all, we want to serve the people in our network.  Whether you are a consultant, designer, integrator, rep, etc., we want to serve you.  Our goal is that any time a person has an encounter with Danley, he or she walks away feeling heard and served.  Are we perfect at it?  Certainly not.  But, we are working on it and hopefully growing better every day.  
We also consider it a privilege to serve those who have no connection to our business.  For example, we love serving families through Habitat for Humanity, Family Promise of Hall County, Fellowship of Christian Athletes, CASA of Hall County, a martial arts ministry in Moldova, and many others.  By serving people through these organizations, we are not looking to increase our sales.  We are serving because it is the right thing to do. 

By valuing service, we hope to continue to grow into a company that finds favor and a good name in the sight of God and man through innovative loudspeaker solutions.
 

When the Legendary Cathedral Quartet retired in December of 1999, Scott Fowler and Roger Bennett decided to continue the rich musical tradition of Southern Gospel Quartet singing. Legacy Five was organized and had their official debut in January 2000 in Atlanta, Georgia. Since that day, they have made a major mark on the Southern Gospel Music world.  Year after year they are recognized as one of Gospel music’s favorite southern gospel groups. The Southern Gospel Music Association honored Legacy Five with Recording of the year and they have had 2 Dove Award nominations.  Danley Sound Labs is extremely proud to be the sound system of choice of Legacy Five.  Be sure to catch a concert when L5 is in your area.  www.legacyfive.com

While the Danley Sound Labs DNA amplifiers are an ideal match to the Danley Sound Labs loudspeakers, there is a lot more that can be done with the amplifiers. The DNA series amplifiers and DSP processor offer a wide array of features that can lend them to tremendous use with all kinds of loudspeakers.
 
All of the DNA series products feature an excellent array of built in 96KHz DSP processing including an impressive array of parametric EQ filters, shelving filters with adjustable slopes, and some unique crossover and limiter functions that cannot be found in other products.
 
One feature that Danley Sound Labs has used extensively in developing presets for multi way loudspeakers is the LIR crossover filter. This is a unique filter type to the DNA processing. It is a linear phase crossover that does not have as large of a latency penalty as if the same crossover were implemented using FIR filtering. Yes, there is a latency penalty that must be paid, and if this crossover is used at low frequencies this penalty can be large. However, when attempting to implement the same crossover function with FIR filtering the latency is always considerably longer. This allows Danley Sound Labs to create real linear phase output from biamp, triamp, and quadamp loudspeakers with minimum latency and amazing clarity! This is just a small part of what makes the multi-way loudspeakers from Danley Sound Labs sound so fantastic.
 
You can hear this processing for yourself when using the SH46, SH96, SH96HO, and SM80M in biamp mode with the factory presets on a DNA series amplifier. You can also hear this processing when using any of the Jericho loudspeakers with the newest factory presets.
 
The current version of PodWare is 6.24.04, though there will be an update coming soon! The new System Engineer software is in the final stages of testing and validation so it will be available soon!
This version is available for download from our website:

http://www.danleysoundlabs.com/dna-podware/

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.

Setting your Loudspeaker Protection Limiters
part 2
Prof. Doug Jones & Ivan Beaver

In our last installment, we laid out the steps you need to take to properly set the limiters in your DSP in order to protect your loudspeakers.  You may recall that we started by guiding you through the process of determining the maximum voltage your loudspeaker is capable of handling.  We then showed you how to figure out the voltage gain of your amplifier.  The logic goes like this:  if you know the maximum voltage that your loudspeaker can handle, and you know the voltage gain of your amplifier, then you will know the maximum voltage that can be safely applied to your amplifier so that the loudspeakers are protected.  Make sense?   I’ll take that as a yes!
 

Ok.  Last time we used an 8-ohm loudspeaker that was rated to dissipate a maximum of 1000 watts.  Our calculation revealed that 89.4 Volts applied across 8 ohms would result in that (VOM) 1000-watt limit.  We then examined our amplifier and calculated that it has a voltage gain of 30.7 dB. We then determined that if we apply 2.59 volts to the input of an amplifier with 30.7dB of gain the amplifier would produce…. Yes you guessed it…. 89.4 volts at the output!

Well, since last time I have done a bit of research hoping that I would find some commonality among DSPs so we could present a simple, no hassle way to set the limiter.  Well, I’m sorry to say that I found no common threads.  So instead of writing a series of articles each focused on a specific brand of DSP limiters, we have decided to encourage you to set the limiter by measuring your system. Of course, if you measure the system then you really don't need the step of determining the amplifier gain…

But in my defense, let me just say that if you can figure out your particular brand of DSP and are fully confident that you understand the relationship between what the onboard meter is indicating and what is appearing at the output of the DSP, then you can use what we have done so far and simply set the DSP so that its’ output won't exceed (in our example) 2.59 Volts and you are good to go.
Ok.  Measuring the system.

STEP 1.  Get a Volt meter that measures AC Volts.   Folks, if you don't own a simple volt/ohm meter (VOM) please put this article down and go get one. It doesn't even have to be expensive.  One that costs $10.00 at the local hardware store is fine.  I own a number of expensive voltmeters but my favorite for this application is a simple Radio Shack™ analog  “multi-meter” or VOM I bought for probably $15.00 a number of years ago.  I like analog, the digital ones are even cheaper.  The reason I like this simple, battery powered VOM for this, is that since we are going to connect the VOM to the output of the amplifier, it is very important that the meter is completely floating. That means that it is not connected to any kind of ground.  Unless you really know what you are doing DO NOT use an AC powered voltmeter for this!  You have been warned!   Now connect your simple battery powered (!) meter to the output of the amplifier.  Make sure that the connections are good and that the leads cannot short to each other or to ground.

STEP 2. Locate a good source of 60 to 100 Hz sine wave.  If your console has a tone generator, that will work fine.  If not you will need to get a few minutes of a recorded low freq. sine wave. The exact frequency is not important, but it should not exceed about 100 Hz.  There are many sites on the internet where you can download or generate a sine tone.

STEP 3.  Set up your sound system as you normally would, but DISCONNECT the loudspeaker(s). 

STEP 4.  TEMPORARILY bypass all filters in your system.  That means all eq, all cross-overs etc.  Set the THRESHOLD control of your limiter to the MAX setting.

STEP 5.  Feed the 60 hz sine wave through your system and measure the output of your amplifier with the SPEAKERS DISCONNECTED.

STEP 6.  The amplifier should be turned all the way up for this exercise.  Increase the level of the 60 Hz sine wave until your VOM reads some voltage ABOVE your desired limit.  In our example, we want 89.4 volts maximum out of the amplifier.   So set your system to produce 95 volts or any voltage above 89.4.

STEP 7.  Now reduce your THRESHOLD control on the limiter. You should see the voltage drop on the VOM.  Adjust the THRESHOLD control until you see the desired voltage – in our example 89.4 Volts – on the VOM.

STEP 8.  You can now turn off the sine wave and return all your filters / crossovers to their normal settings.  You are done!
 
If you follow theses 8 steps, your limiter should not let the voltage of the system exceed the limit that you set and your speakers will be protected to the extent that a limiter can protect them. 

Now, If you think you know why in STEP 2 I say to use a 60 to 100 Hz sine wave as a test signal, drop us a note at jeff@danleysoundlabs.com. We will pick a winner from all the correct answers and send you some great Danley swag!