CJ18

Before someone wants to come out and say it, I dont care what you think you would be able to see on the scope, this is what I saw. iF you would like to argue that point, please feel free to buy all of the equipment necessary and do your own testing for the viewing pleasure of others. Now on to the results. Screen Shot 1 frame before clipping light turns on. 50.6vAC 12.6aAC Power Factor of 100% makes this 637.56w Screen shot 1 frame later with clipping light on. 54.1vAC 13.5aAC Power Factor of 100% makes this 730.35w Screen Shot 1 frame before I can visually see clipping 56vAC 14aAC Power Factor of 100% makes this 784w Screen shot where I can first visually see clipping. 58.4vAC 14.5aAC Power Factor of 100% makes this 846.8w Dyno Reading

I am uploading a few screen shots of the last video now.

If I can find my cable to plug my camera into my computer I am redoing this test in more detail.

How about this, would you like me to redo the test and use only a TRMS Multi meter. THen how are you going to know the point where clipping occured? The only thing wrong with what I did may be the way I come across on the video instead of explaining why there is such a drastic difference. Here is the fact of the matter. 99% of people who clamp are going to do exactly what I did. Take the biggest number you see and claim it as watts.

This is getting interesting. Looks like a lot of people are taking this video the wrong way. We obviously have a couple of people in here that do have an idea how to properly use clamps on a resistive load. But how many people really do? I will be more than happy to redo the video and show more detail. Here are a few facts 1) on a resistive load, dyno and clamping should match. 2) dyno tells you the number straight up, to find the correct nber while clamping, you have to watch the sine wave to find the point that you think is just at or before clipping. 3) how many people that clamp, do it with a scope? Not many. Most use a dmm and cheap clamp. Even using a resistive load, you can't see your sine wave on a dmm so you just take the biggest number. Not accurate.

You are looking at about $5000 worth of testing equipment sitting on my make shift bench. I have the tools to do the job correctly, most people dont. The AMM1 now provides an affordable solution that. That's what i'm trying to say, with cost difference between the tools needed to get an accurate test the amm1 is a hands down winner. Yes clamping with the right tools can give you More accurate result but still not 100% and not as cost effective. Let's face it us audio guys are always looking for a good way to save money while still getting the install done right. The amm1 helps do that plus some with ease and accuracy. Sorry if anyone feels like i'm baking clamping, not trying to. It's the way of the past and inaccurate compared to the amm1. For a cost effective tool the amm1 is a steal. Unless the amm1 is cheaper than 250 bucks then it's actually not the better deal. But if you honestly need something that can measure taking into account for the power factor then I guess spend the extra money. 99% of people don't do it and so the industry standard is basically clamping for voltamps. And VA isnt watts.

The video is staying up. I will make sure to really hurt the clampers feelings when I test the AMM1 vs Clamping using a Subwoofer. Point of this. AMM1 very simple. Clamping- To find the exact point, you have to video it and then go back to watch that video to try and find the point just before clipping. Pain in the ass.

HAHA cheap clamp. http://www.testequipmentdepot.com/products.htm?item=353&ref=gbase&gclid=CPa_soijk7wCFVQV7AodIWYA-g

You are looking at about $5000 worth of testing equipment sitting on my make shift bench. I have the tools to do the job correctly, most people dont. The AMM1 now provides an affordable solution that.

D'amore had a vid showing why it's off. Something about phase differences. I haven't watched in a while but here: Phase Angle comes into play when you are using a subwoofer as you load, not a resistive load.

I'm not bashing the dyno or the AMM-1. Or even taking up for clamping for that matter, but the way the test was done using the dyno for the clamp portion isn't the best way to illustrate the difference. Cody retested the amp. He videoed the clamped portion this time. This is a screen shot of the 900w clamp result. Pay particular attention to the wave on the scope-meter The dyno and AMM-1 stop reading at 1% THD. Does that look like 1% to you? Yeah... me neither. This is much closer. This is a screen shot of the same vid, but while the wave is still clean. That's 570w and MUCH closer to what the dyno and AMM-1 are seeing. Clamping is flawed because of the phase angle on reactive loads. But he isn't using a reactive load here, is he? The Dyno and Clamps are supposed to agree on this test. What happens here though is to find the point that clipping occurs, you have to be using a scope that can keep up with the sine wave. Most people who clamp do so using just a DMM with no way to see the point that clipping occurs. Even using the scope and being able to see the sine wave, it is very tough to get an exact reading of the highest point just before clipping occurs to know what your true useable power is. Based on what I was able to see with my eye when going back over the video, I can find 570w of clean power. But the Dyno and AMM1 see 651w of clean power. 81w might not be alot if we are talking in the range of 10000w, but when we are working in the 500-700w range, that represents alot of power.

The point of this test wasnt to bash clamping, it was really to show the accuracy of the AMM1. Here is a breakdown of the test. Amp Dyno is being used to provide a 4Ω resistive load. On paper, the clamps, Dyno, and AMM1 should all agree on the same number since the load is resistive and the power factor is 100%. Here is where the tricky part comes in. If you are "clamping" using just a general DMM, there is no way for you to see where clipping occurs. Now if you use a nice Oscope, you can now see the sine wave. BUT you are having to rely on your eyes to tell you where clipping occurs to find out what the numbers are at this point to find your usable power. Once you take this into your vehicle and start using a subwoofer to create your load, now you run into phase angle which clamps cannot see. Overall the AMM1 does everything for you and make it MUCH MUCH easier. It is an all in 1 tool.

I dont mind reposts

I am very very surprised that is did that much power with only a single run of 1/0 and 3 D1600s. I really expected the voltage to tank, but that is credit to XS Power for making bad ass batteries. What surprised me is I know this amp will certify about 8600w at 1 ohm and 14.4v with plenty of power behind it. The higher voltage definitely made a huge difference.

The wildcard here are the dynamic tests. Less stress on the battery bank and that amp is a monster at .8.

29732 in all 5 test combined.

The Amp Dyno doesn't care one way or the other. It will measure the true power coming into it regardless where it is coming from. You could connect it to a wall socket if you wanted to dyno your house. Tell me more, I will do it!

I want the 1005, but the new power supply/charger is very intriguing.

That's an excellent idea. Could get pricey though because I know Steve would want to go very big lol. Advertising tax write off. Give him the Sonic Black Card!!!!