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<blockquote data-quote="Tony D&amp;#039;Amore" data-source="post: 7464837" data-attributes="member: 634204">Hey guys sorry for the late response, I am extremely busy these days.It is patent pending1. It is measuring the two frequencies and the relative amplitude of these frequency&#039;s harmonics.2. 1k and 40Hz.&nbsp; 1k because it is an industry standard for power output, and right in the center of the human hearing range.&nbsp; 40Hz for the bandwidth limited subwoofer amplifiers.3. A perfect amplifier will put out the same voltage loaded or unloaded.&nbsp; Of course only one amplifier like this exists in the world (the T15kW //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif )&nbsp; The rest of them will put out more voltage when unloaded of course.&nbsp; This difference is typically 1 - 2 dBV.&nbsp; So setting with the amp unloaded takes the stress off the speakers and adds 1 -2 dB of gain overlap.&nbsp; Not a big deal.&nbsp; If the amplifier has a fully regulated power supply, then it has no effect what so ever.4. It is better than an o-scope because clipping is one thing that can cause distortion, this can be easily seen on most o-scopes.&nbsp; But there are many other things that cause distortion that are very hard to see on an o-scope, esp a little hand held digital piece of junk just sayinHere is a video to show you what i&#039;m describing.At around 1:40 you see distortion caused by clippingAt around 3:25 you see distortion caused by a DSPAt around 4:40 you see distortion and noise (the dd-1 ignores noise) caused by a cheap LOCI can&#039;t post the URL so youtube &quot;Car Audio Amplifier Gain Setting Device!&quot;1. What exactly is it measuring? Freq, harmonics, clipped signals?2. Someone said it measures at 2 different frequencies....if so, which are they, and why are those one picked vs other frequencies?3. How does it work with no load attached on the amp?4. Why is it better than an o-scope? Can it do amps, processors, and decks?</blockquote>

[QUOTE="Tony D'Amore, post: 7464837, member: 634204"] Hey guys sorry for the late response, I am extremely busy these days. It is patent pending 1. It is measuring the two frequencies and the relative amplitude of these frequency's harmonics. 2. 1k and 40Hz. 1k because it is an industry standard for power output, and right in the center of the human hearing range. 40Hz for the bandwidth limited subwoofer amplifiers. 3. A perfect amplifier will put out the same voltage loaded or unloaded. Of course only one amplifier like this exists in the world (the T15kW [IMG]//content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif[/IMG] ) The rest of them will put out more voltage when unloaded of course. This difference is typically 1 - 2 dBV. So setting with the amp unloaded takes the stress off the speakers and adds 1 -2 dB of gain overlap. Not a big deal. If the amplifier has a fully regulated power supply, then it has no effect what so ever. 4. It is better than an o-scope because clipping is one thing that can cause distortion, this can be easily seen on most o-scopes. But there are many other things that cause distortion that are very hard to see on an o-scope, esp a little hand held digital piece of junk just sayin Here is a video to show you what i'm describing. At around 1:40 you see distortion caused by clipping At around 3:25 you see distortion caused by a DSP At around 4:40 you see distortion and noise (the dd-1 ignores noise) caused by a cheap LOC I can't post the URL so youtube "Car Audio Amplifier Gain Setting Device!" 1. What exactly is it measuring? Freq, harmonics, clipped signals? 2. Someone said it measures at 2 different frequencies....if so, which are they, and why are those one picked vs other frequencies? 3. How does it work with no load attached on the amp? 4. Why is it better than an o-scope? Can it do amps, processors, and decks? [/QUOTE]

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