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lol yeah somehow "subsonic" was used somewhere in audio and just stuck. Kind of like "Watts RMS", that also isn't correct. We are just trying to educate and keep our sport legit. I'm sure I'll get to all of this stuff in future videos, because once we are done learning about basic electricity we are going to dive in to audio. But for now: Supersonic = faster than 768 miles per hour Subsonic = slower than 768 miles per hour Ultrasonic = Higher than 20,000 Hz Infrasonic = Lower than 20 Hz -Tony

i think i watched this 20 times and it still cracks me up https://vine.co/v/hHDYAmtPBYV

Yikes, that's scarry!!! Crazy how when the wire gets warm/hot, the voltage drop increases and the resistance so the wire just starts to self destruct in a way!!! Insane. Full copper for my build, I'm sold

Thanks for the free education Tony! I actually paid for the education several years ago. It's funny how much easier it is to understand from your videos. I can understand it all when I can relate it to audio. Keep 'em coming Mr. D!!!

Today at Skar Audio we put the Skar Audio SK-4500.1D on our newly built test bench and got it all set up with the SMD AD-1 Amplifier Dyno for power testing results... Needless to say many customers asked us to Dyno this amplifier once we started putting videos up of our smaller amps, and now that we are set up to do so, the time has finally come to post those results. Steve and Tony did a great job with designing and building a product like the AD-1 so that way we can easily test and get across the real power output capabilities of these amplifiers in the most accurate way possible. Enjoy! SMD AD-1 Amplifier Dyno Testing Results Model: Skar Audio SK-4500.1D Monoblock Amplifier Certified Run at 1 Ohm : 4,943 Watts at 13.85 V Un-Certified Run at 1 Ohm : 4,996 Watts at 13.85V Dynamic Power Run at 1 Ohm : 6,208 Watts at 14.88 V Dynamic Power Run at 0.5 Ohm : 8,641 Watts at 15.42 V Thank you for taking the time to read this thread on our SK-4500.1D, for more information about this product or to find an authorized dealer from which to buy, please visit our website at www.SkarAudio.com -Kevin

-Resistance is NOT Impedance. -Volts * Amps does NOT equal Watts in AC land -You can NOT use an AC voltmeter and AC current meter to get true power unless you are powering a resistor and are using a scope or clipping detection device. I don't care what your friend the "electrician" said. -You can NOT use a DMM to measure impedance -Clipping is NOT DC -There is NO SUCH THING as Watts RMS (though we use it in audio) -WTH is "Box Rise" -The word "subsonic" to describe low frequency audio is TOTALLY incorrect -CCA wire is NOT OK -Class D is not better, it's cheaper WTH is Class D? D'Amore Engineering will be launching a FREE education section on it's website in the next few days. There will be a series of videos and demonstrations to prove all of the above statements and more. This sport is more full of bad information than the gossip mags at the checkout stand. Something needs to be done. This bad information continues to get passed on, and our hobby continues to be degraded. I'm still paying on my student loans, but it doesn't mean you have to. Stop by www.DAmoreEngineering.com soon, watch some vids, buy a t-shirt.

You also know, that the .5 load test, is reactive right? .Not nominal....Would you wire to like .2 ? I thought it was nominal not reactive. Like nominal would mean that it is always .5 and a reactive load would change. Could be wrong though. No, the Dyno tests using purely resistive loads. It is NOT subject to any type of rise. If a test is done at 1 ohm, then that is what the amp is seeing for the entire duration of that test. Now that being said, the dynamic test is much easier on the amp and electrical than the certified or uncertified tests. I would be very surprised if that amp stayed on for a .5ohm certified test. And for the fact that he simply states they will not warranty the amp at .5 ohm. I don't get why a company would test at .5 ohm load and then not warranty if they are going to brag about results? Still great numbers and loved my 4500s.

You also know, that the .5 load test, is reactive right? .Not nominal....Would you wire to like .2 ? I thought it was nominal not reactive. Like nominal would mean that it is always .5 and a reactive load would change. Could be wrong though. No, the Dyno tests using purely resistive loads. It is NOT subject to any type of rise. If a test is done at 1 ohm, then that is what the amp is seeing for the entire duration of that test. Now that being said, the dynamic test is much easier on the amp and electrical than the certified or uncertified tests. I would be very surprised if that amp stayed on for a .5ohm certified test.

At a specific altitude and temp... Lol

magic...

15.42V on the 0.5ohm test? On a charger? 16V bank? Just curious.

Not bad. But, read between the lines bro.

if you have the elec to support it.. hell yea (16v)

Yikes, that's scarry!!! Crazy how when the wire gets warm/hot, the voltage drop increases and the resistance so the wire just starts to self destruct in a way!!! Insane. Full copper for my build, I'm sold Yep, that is called thermal runaway

CCA is not ok check out this vid. http://www.youtube.com/watch?v=vJt6C2tvPBQ

Great video Tony Love that you went in and explained specifically what RMS is rather then just throwing up a general formula, especially comparing RMS to AVG. If people are serious about this hobby then they should be interested in learning how it works technically. The part on the Vrms of the clipped waveform should open some eyes, that's for sure. I know its important to keep content in its respective section of the forum, but to increase the views and make sure as many people see the videos as possible, it may not be a bad idea to pin them in the Electrical (and maybe Amplifier) sections as well. When you get to it, the Subwoofer Section could use a pinned video on impedance too.

I was right in the middle of a photoshoot for PASMAG (Performance Auto and Sound Magazine) when someone stopped by for a demo. I didn't really have time to do it but i gave him a quick little taste of it so he didn't go home empty ear'ed. That new RITTZ album is pretty good IMO!

I have had this thing for probably a year and a half...finally got around to hanging it the pics do it no justice, this thing is HUGE had to make a small modification to the banner. Looks MUCH better now! This one gives you a better idea how big it is LOL

Video 4: Intro to AC has been uploaded!

the man is teaching you the difference. You need to have your pencil and note pad out. I also think you should show some respect. He hasn't posted any smart ass comments your direction.

We've got the AD-1 Amp Dyno very close to production trim. Here are a couple of demo videos showing some of it's capabilities. Currently the AD-1 Amplifier Dyno is the only self contained test system that can measure RMS Continuous Power and Dynamic Power of both Full Range and Bandwidth Limited (subwoofer) Amplifiers in the world....and it does it in YOUR CAR! Please enjoy these two videos. The first video demonstrates the gain setting capability of the newly developed DD-1+ technology built into the AD-1. DD-1+ allow the user to make variable gain overlap settings in 1dB increments, even if the system is dirty and reads over 1% Distortion BEFORE clipping. The AD-1 amp dyno's DD-1+ technology can also be used in EXACTLY the same manner as the classic DD-1 if the user chooses. Link below The second video demonstrates the dyno loading and precision power measurement technologies in the AD-1 Amplifier Dyno. Learn about Certified Dyno Mode (which the Jeep's system failed due to headunit's noisy output), Uncertified Dyno Mode (which is the backup in the event you run into a problem like we did), and Dynamic Power Mode which measures power output during a very short term "bursted" signal. This is the industry standard for measuring "Dynamic Power" or "Headroom". Link below