I approve of this message! Excellent info and detail provided. The AMM-1 is probably the most game changing audio tool out there 👌
@DIYAudioGuy
2 жыл бұрын
Yeah, this thing does a lot more than I realized. I bought it after doing a bunch of research into clamp meters and I could not find one that could read a 1,000 Hertz signal. Difference is that this thing was made specifically for audio.
@scottiffanimccord1509
2 жыл бұрын
Fart sound.
@DIYAudioGuy
2 жыл бұрын
@@scottiffanimccord1509 🤣🤣🤣
@mcf3778
2 жыл бұрын
ill buy one someday
@ckillac5258
2 жыл бұрын
We need more companies or options for these meters, Is SMD the only company making these things? Are there any other competitors?
@THELIFEOFPRICE
2 жыл бұрын
Nice video man!
@DIYAudioGuy
2 жыл бұрын
Thanks!
@bluntsandhoes2481
2 жыл бұрын
You give the most valuable technical information on KZitem and do a exilent job at explaining everything. Keep it up your really helping out not only the beginners but alot of the more experienced audio enthusiast.
@DIYAudioGuy
2 жыл бұрын
That's my goal!
@matthewmassey2333
2 жыл бұрын
Hey man I really like your video's nobody ever shows the different modes of the amm1 and what they actually do and how they may or may not be important to you. Plus the overall happy nature of your vids is refreshing 👍🏼
@DIYAudioGuy
2 жыл бұрын
Thanks, I appreciate that!
@kswis
2 жыл бұрын
Well done. Very thorough. AMM-1 is a nice tool in the arsenal
@DIYAudioGuy
2 жыл бұрын
I'm looking forward to making some more videos with it.
@gn_electronics
2 жыл бұрын
You can actually use a 50hz tone, a power resistor and a multimeter. Square the voltage and divide it by the resistor's ohms and you have the amp's wattage. I also use my phone's mic input and an oscilloscope app to know the clipping point so i can measure clean power.
@DIYAudioGuy
2 жыл бұрын
Yes, that should get the same results as an amp dyno on a resistive load. I did not really get deep into how box rise impacts that because I've got another video on that.
@lowhertzhighspl
2 жыл бұрын
For dynoing an amp? Or for finding out true power from a system?
@IAM_HC
2 жыл бұрын
@@DIYAudioGuy I literally heard you just say I don’t like to use the term box rise as I read this comment. Lmao 🤣🤣🤣
@DIYAudioGuy
2 жыл бұрын
@@IAM_HC I did not say that I did not use the term. I said I did not like using the term. I don't like cussing either. 🤣
@IAM_HC
2 жыл бұрын
@@DIYAudioGuy lol and I totally get your point on why you don’t but why you may. The timing was hilarious and I had to tease.
@earnietaylor8527
2 жыл бұрын
Top shelf info. Thank you.
@DIYAudioGuy
2 жыл бұрын
Thanks!
@JohnNolteAudio
2 жыл бұрын
Very informative video, awesome job 🎵🤘🎶🔊
@DIYAudioGuy
2 жыл бұрын
👍
@HifiVega
2 жыл бұрын
Great video Justin
@DIYAudioGuy
2 жыл бұрын
Thanks!
@georgesrisomsak9650
2 жыл бұрын
Always a thumbs up from me bud, I like your take on some subjects. There's a lot of videos out there for this, but your angle and take is a great addition to the more simple breakdowns! This audio stuff is as complex as you want to make it, lots of science, math and physics involved. It's what keeps me interested! Hopefully all this learning nets me a nice lil setup on this next build! Great video man!
@DIYAudioGuy
2 жыл бұрын
Thank you I appreciate that.
@littlejln213
2 жыл бұрын
Nice! I have an amm1 that I'm going to be doing dyno runs with. I have over 160 90s era amps that will all be run.
@DIYAudioGuy
2 жыл бұрын
Old school!
@elfuego4341
2 жыл бұрын
Another informative video dropped by the professor of car audio! I love the versatility of my AMM-1. Thanks for the knowledge and keep up the great content.
@DIYAudioGuy
2 жыл бұрын
👍
@TRONMAGNUM2099
2 жыл бұрын
Cool, this should make some great comparison videos. Like if the clip light matches up with an oscilloscope showing the wave form. Back when I competed, we always just did the Volts squared divided by the load to get watts. Not really factoring in impedance rise. It would be cool if you made a video showing real world with a sub in a box vs using dummy load. Also setting gains. I'd like to see what you think is easier.
@DIYAudioGuy
2 жыл бұрын
That is exactly what I plan to do. Just need to hurry up and get the videos out before somebody scoops me!
@Thumper68
2 жыл бұрын
It does line up with an oscilloscope.
@chichidouglas5078
2 жыл бұрын
@@DIYAudioGuy you were already scooped. EMF audio did that video over a year ago to show that it's impedance rise and not box rise he did a side by side comparison on the bench with sub in the box and in free air.
@RobotUnderground
2 жыл бұрын
Would love to see you explain the old Power Cube measuring system promoted by Rockford several years back
@DIYAudioGuy
2 жыл бұрын
That's a new one on me! I had to Google it. Don't you think it's an amazing coincidence that Rockford fosgate amplifiers all do well on that test?
@RobotUnderground
2 жыл бұрын
@@DIYAudioGuy Well to me it seems like the most technical format, as they take the output number from each phase and then get the average of all four. Rockford was also the one that suggested that, "People don't listen to resistors", and they bragged that their testing rigs were all inductor and cap banks... At MTX though, they just had a big room full of woofers. MTX built their building on Baseline Road, so I think they had more room to spare while Rockford leased their building on Rockford drive for some time. I'm sure they own it now and maybe some surrounding complexes. I think it'd make a great video to introduce the boys to some science as well as act as a call back to "oldschool", type things from the 90's. I think you're the right guy to do it.
@DIYAudioGuy
2 жыл бұрын
@@RobotUnderground I might be in over my head on this one. I'll have to do some research. But, that's kind of my niche. Oh by the way, I like the looks of those jiz llamas. Keep doing what you're doing man!
@markfischer3626
2 жыл бұрын
I see you are a friend of ELI the ICE man. The power factor of a speaker system varies all over the place with frequency. If the inductors have ferrite cores it will vary with amplitude as well. Not only that but the frequency response of the amplifier will change with reactive loads and with amplitude. So everyone wants one or a few simple numbers to make comparisons of something very complex. To add to the fun you have back EMF mostly from woofers. The woofer wants to act as a generator at its system resonant frequency pushing back at the amplifier. So you'd better have a damned good large well regulated low impedance power supply or the speaker will push the quiescent operating point of the active devices all over the place. This in part explains why amplifiers that measure the same on a test bench with 4 and 8 ohm resistors sound different. The output transformer of vacuum tube amplifiers adds an interesting kind of distortion called hysteresis distortion where due to the magnetic losses in the core the negative going trace does not follow the same path as the positive going trace. This is due to the inertia of the magnetic domains switching polarity. Solid state amplifiers and OTL tube amplifiers cannot create this kind of distortion. The worst amplifier design IMO and the most primitive is the SET class A tube amplifier with no feedback. Even the thermionic emissions of the cathode varies with the square of the temperature (in degrees Kelvin.) The thing drifts all over the place and is usually very low power. It also generates a lot of heat as it is the least efficient design. That was the first amplifier I ever built from spare parts and the schematic in the back of an RCA tube manual when I was 10 years old.
@DIYAudioGuy
2 жыл бұрын
I am not familiar with ELI the ICE man.
@Jpilgrim30
9 ай бұрын
Here’s what I’ve wondered about measuring power on a good multi-channel DSO like a Pico scope and a PC. If I’m plotting the voltage and amperage together could I get real wattage that way because you’re not just putting two number together like a DMM and an amp clamp? With the scope you’d be using a cursor and seeing what the amperage was at the exact point you’re measuring voltage as well.
@DIYAudioGuy
9 ай бұрын
You have to do something like that in order to account for power factor
@AwestruckOffRoadingHertz
2 жыл бұрын
Good video Justin. Very informative. Lots of great information here. I personally just wont purchase SMD products. Are they pretty top notch? Absolutely. However they are also incredibly over priced. I get it, Steve Meade is a founder and a pioneer in the industry. But after this many years, he still doesn't even include a 9v battery to operate his equipment. Its not that big of a deal but when you buy stuff that expensive, doesn't have a battery, and I personally know people who literally picked up a control lead just to have the wiring fall right out of it. Brand new. As prices continue to rise on literally EVERYTHING, I won't continue to support car audio companies that jack prices up like crazy. I'll just purchase directly from build houses in China from now on. I can purchase 2 competition high end drivers for the price of one if I go straight to the build house. These days its about playing it smart. Again, excellent video Justin. Great knowledge here for anyone that wants to dive deeper into the knowledge of car audio.
@DIYAudioGuy
2 жыл бұрын
I totally get that. It is kind of like snap-on tools.
@AwestruckOffRoadingHertz
2 жыл бұрын
@@DIYAudioGuy FACTS
@AwestruckOffRoadingHertz
2 жыл бұрын
@@DIYAudioGuy At least Snap-on has a no questioned asked replacement free of charge program. I'm a welder fabricator for 20 years. Trust me on that. At least Snap on makes it worth it in the long run after an expensive initial investment.
@angelvip2474
2 жыл бұрын
The engineering behind the product is from Tony D'amore. All this man's products are solid.
@DIYAudioGuy
2 жыл бұрын
That's why I like this device. Made specifically for audio by a legit engineer with tons of audio experience. If you want to measure power this is the best tool for the job.
@THEAVERAGEGUY1983
2 жыл бұрын
I caved in and bought one because I'm really curious on knowing what my JL Audio C7 speakers are actually receiving from my HD amps And it makes a great pair with the DD1+ I already own. 😁👍
@DIYAudioGuy
2 жыл бұрын
Of all the SMD test units I think that the AMM-1 is the best one. You can find clamp meters that will do almost the same thing, but I could not find a clamp meter that could measure anything above 300 Hz. I'm sure they're out there.
@25hztolife14
2 жыл бұрын
Would you consider a video on how to best use a Power Clamp Meter?
@DIYAudioGuy
2 жыл бұрын
That's a good idea.
@RAW_Reality
2 жыл бұрын
@@DIYAudioGuy Would you approve of the MUSTOOL MT336 tool for $50? Interesting concept, having a clamp & o-scope in one piece of equipment.
@jasonhooey5677
Жыл бұрын
If you're going to do amp dyno's, do it with a reactive load. Most people are running 1 or 2, 10 or 12 inch subs in a ported box. That's what i would liie to see. Cause i have a 500 watt rms jbl amp that just doesn't seem to have the power it should
@DIYAudioGuy
Жыл бұрын
Like this? kzitem.info/news/bejne/q32g0miNspl4h20
@jus1taj
2 жыл бұрын
Please dyno the Skar RP-1500. Also, the floating math symbols section was cracking me up. Haha.
@DIYAudioGuy
2 жыл бұрын
Yes, that was an attempt at humor! I'm glad at least one person got it. I went through the trouble to look up actual formulas for capacitance, inductance, and AC impedance. As far as the amp goes, I will test anything that I can get my hands on.
@beemackin2316
2 жыл бұрын
Yes Dyno please
@DIYAudioGuy
2 жыл бұрын
Stay tuned.
@hagopboghossian6841
2 жыл бұрын
Thank you for the great information 🙏 i appreciate it, but about the dyno I think it's take the measurement just to know if the amplifier can reach the manufacturer mentioned power or not, because of this they don't care for resistance change.
@DIYAudioGuy
2 жыл бұрын
Exactly. You have to do that test into a resistive load instead of a reactive load. That is the only way to have a consistent, comparable result. When you hook it up to a speaker the result could be due to box rise or the result could be due to the reactive load. So you don't actually know what the amplifier can do.
@lowhertzhighspl
2 жыл бұрын
Yup, exactly what he said in the video.
@turboduckhead6179
2 жыл бұрын
You really should study Electrical Engineering, you would make a great teacher. It’s one thing to understand Electrical Engineering, it’s another to explain it clearly and concisely.
@DIYAudioGuy
2 жыл бұрын
If I had a time machine I would.
@turboduckhead6179
2 жыл бұрын
@@DIYAudioGuy I don’t think you need a time machine, you already know the information. Resistive, Capacitive and Inductive circuits are part of and Undergraduate Degree. I’m pretty sure it was on the subject on AC DC conversion.
@DIYAudioGuy
2 жыл бұрын
I think the Amm-1 is a great tool: lddy.no/13cri
@sermac3246
Жыл бұрын
👍
@MullinPerformance
2 жыл бұрын
Great video...im gonna have to watch it a few times.
@DIYAudioGuy
2 жыл бұрын
You are far too kind.
@25hztolife14
2 жыл бұрын
I put these videos in my Car Audio folder to watch over and over. More knowledge, makes me appreciate my own system and makes me more of a "professional."
@MullinPerformance
2 жыл бұрын
Since my memory is absolute crap, I like have reference material I can go back too. I think I have forgotten more about audio than I have learned.
@BassFace1776
2 жыл бұрын
I love the Dynos cuz it gives us something to go off of. And it really shows when the manufacturers are lying. I know I'll never get that power but just like a car Dyno it's a baseline.
@BassFace1776
2 жыл бұрын
@nate0 I just tell them whatever the amp is at whatever ohm the speaker is at. I think it's easier to just give a broad answer so we're all on the same page. I deal with a lot of people who have no idea that max and rms is different. So it just makes more sense to use the rms at whatever volts the manufacturer (if correct) states.
@BassFace1776
2 жыл бұрын
@nate0 lol something like that. It's just so hard to teach people anything about car audio. They don't listen I was once young and dumb and also wouldn't listen. I knew rms but was set on small sealed boxes cuz I heard " sealed is the best for SQ". You shoulda seen my face when I heard my first custom ported box. Never went back after that but it took 6-7 years to get there.
@DIYAudioGuy
2 жыл бұрын
As long as brands keep slapping random numbers on the outside of their boxes, that are completely unrelated to the actual power the amplifier might have a chance of doing, The amp dyno is our best friend.
@TheOne-yc1wt
2 жыл бұрын
@@DIYAudioGuy Unfortunately we live in a world where people want the absolute most and all they seem to care about is that magic high number, regardless of actual real world watts and usage and seems like those people are the hardest to convince why they should go off rms numbers lol
@gregblau8082
2 жыл бұрын
I have a uni-t clamp meter from Amazon. We compared it with a snap on and the readings were pretty close
@DIYAudioGuy
2 жыл бұрын
👍
@MisterEE100
2 жыл бұрын
Great Video. I do have one question, how many sets of batteries for the AMM1 did you go through doing this video :D
@DIYAudioGuy
2 жыл бұрын
I still only original battery, have not had to replace it yet.
@CharsWigg
2 жыл бұрын
Love your channel, tons of info on here, do you have contact information?
@jondoe6618
2 жыл бұрын
That’s why my jl 1000/1 is louder than any other 1000 watt amp I have ever had or heard. True 1000 from 1.5-4 ohm. Hence the massive 1$ per watt price.
@DIYAudioGuy
2 жыл бұрын
Have you tested it to verify that? Not trying to start something, just want to know.
@johnnycorn7225
2 жыл бұрын
I figured out in the 90s that you're better off getting a high dollar amp with lower Watts still true today. Fosgate JL kicker these are amps I have known and trusted for decades
@DIYAudioGuy
2 жыл бұрын
@@johnnycorn7225 Yes. But I thought you were saying that this amplifier would do its rated power into a reactive load. Have you tested it? I am legit curious.
@sylkelster
2 жыл бұрын
The rack mount dyno is a clever piece of pro hardware but the handhelds will go far.
@mamao_st_is_mine
2 жыл бұрын
Is that a ski slope on your screensaver behind you?
@DIYAudioGuy
2 жыл бұрын
I think so, it's just the default desktop background that was on my computer the first time I turned it on.
@joshuakemp1439
2 жыл бұрын
Did you ever figure out why the dats is giving you different tuning frequency in all the prefab boxes
@DIYAudioGuy
2 жыл бұрын
Nope.
@joshuakemp1439
2 жыл бұрын
Thats so wired. Try building a small enclosure that you set the tuning and see if it reads the same. Im so curious. Its a great product the dat want one myself but really want to know why its giving all different readings
@jacobmcentire8790
2 жыл бұрын
I’m curious, does the SMD amm1 actually measure the true amplifier power or not or is it a waste of money ?
@DIYAudioGuy
2 жыл бұрын
That's exactly what it does. You can see it in action here. kzitem.info/news/bejne/q32g0miNspl4h20
@Jonas_Aa
2 жыл бұрын
Maybe not a bad idea to use a "that Amazon meter". Maybe it could work. Most (if not all) are for measuring correct at 50 or 60 Hz sinewave. But why not measure the amp at 50 or 60 Hz sinewave?
@DIYAudioGuy
2 жыл бұрын
The AC clamp meter designed for house voltage will work fine if you just want to measure bass. The cheaper ones all have safety warnings indicating that you should not ever measure a square wave with them. So if you're amplifiers clipping...
@Jonas_Aa
2 жыл бұрын
@@DIYAudioGuy Good point about the clipping, that will give other frequencies than 50/60 Hz. Looked around for current measuring devices that I was going to use in a end of line testing machine that has 40 Hz square wave. So most of the ones do only 50/60 Hz sinve wave. Then there are ones that goes up a bit in frequency. Something like up to 200 Hz but still only sine wave. Still not good enough for square waves. Ended up using a $10 current coil from LEM, but then you also need the rest of the things like power supply and something to measure the voltage from it. Basically what's inside that SMD thing you have.
@NVMDSTEvil
2 жыл бұрын
Dyno home/pro amps please!
@DIYAudioGuy
2 жыл бұрын
I will test anything I can get my hand on!
@scottiffanimccord1509
2 жыл бұрын
You did a good job describing the electromatic field, left out the magnet (motor), by that movement creates AC current also adding to resistance, then took a crap you pitched an overpriced POS, I'm making a fart sound. Lol Scot M.
@DIYAudioGuy
2 жыл бұрын
I get that, but I did a ton of research. It was really easy to find stuff that could calculate true power around 60 hertz. If you just need to calculate your power on a subwoofer I think an AC clamp meter would do just fine. But not many devices worked across the full spectrum.
@retro80s80
2 жыл бұрын
Yeah but tbh its still too expensive for a tool that's hardly used and add on the uk shipping and import tax = unreasonable cost for a funky multimeter😂
@DIYAudioGuy
2 жыл бұрын
It's not something that most people need.
@lowhertzhighspl
2 жыл бұрын
8:20 Will Sky High 4XL guage "speaker wire" fit in this device?
@DIYAudioGuy
2 жыл бұрын
Looks like it could probably fit 4 gauge wire. Not really sure how thick the sky high wire is.
@timbuckohfive2751
2 жыл бұрын
Audio output is not AC it is DC. AC changes in polarity from a positive voltage to a negative voltage. Meaning the current alternates in the direction it flows through the circuit. That is why its called alternating current. Audio is always a positive voltage that changes in amplitude the current always flows in the same direction.. Yes it acts like AC but it is not.
@DIYAudioGuy
2 жыл бұрын
That's actually a very common myth, perhaps I need to make a video about that one as well.
@timbuckohfive2751
2 жыл бұрын
@@DIYAudioGuy I am an electronics technician. My specialty in the Navy was Radars and amplifiers. The output of an audio amplifier is DC current. An emphasis on current. The current only goes in one single direction. In an AC circuit the flow of current actually changes direction. Hook a signal generator up to and amp input set it at 50hz hook up an o-scope to the out put. No matter what the input gain it is always 50hz but when you change the gain the amplitude changes. Whether the output is 0 to 8 volts at 50hz or it is 0 to 16 volts at 50 Hz the current only goes in 1 single direction.
@Jonas_Aa
2 жыл бұрын
@@timbuckohfive2751 would that not only be true for a amp that has only positive voltage (0 to +24). But what if the amp goes from for example -24 to +24? Then I think that would considered to be AC if the frequency is > 0.
@Nissanalltheway
2 жыл бұрын
Different fz has different ohms meaning different power levels
@DIYAudioGuy
2 жыл бұрын
Yep.
@schons77iceman
2 жыл бұрын
Why is the smd amm-1 damn near 500 bucks?
@DIYAudioGuy
2 жыл бұрын
Because people that need/want it are willing to pay that much for it.
@schons77iceman
2 жыл бұрын
@DIY Audio Guy I mean I need and want it but for the same price or a little more I got a term lab that does far more than the smd amm-1 does
@caraudio2312
2 жыл бұрын
@@schons77iceman x2
@HashDogg06
2 жыл бұрын
@@schons77iceman Well there's your answer right there, go buy a Termlab & get back to us when you realize how annoying it is to carry around & setup even though you just want to quickly check your friends amp output in a car park somewhere.
@basshead30
2 жыл бұрын
👍👀👍💯
@DIYAudioGuy
2 жыл бұрын
👍
@BentonL
2 жыл бұрын
Please test to your hearts content. What ever it is you test there is someone googling it right now. So many things still untested and posted. So many things I have went to buy and cant find data on.
@DIYAudioGuy
2 жыл бұрын
Absolutely!
@mcf3778
2 жыл бұрын
ad1 is best case scenario.... you cant ever get those numbers.... i know for a fact my jp23 isnt doing dyno numbers
@DIYAudioGuy
2 жыл бұрын
There is a ton of confusion on that.
@elcaminosupersport
Жыл бұрын
Too much calculations to check for watts to subs I use my clamp no need to calculate anything
@DIYAudioGuy
Жыл бұрын
Yeah, you kind of have to use a clamp of some type. I don't mean any people that can calculate the angular distance between the two wave forms.
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