I already bought the LM2020. Apparently I didn't know how to shorten the wave. Trying again brings experience. Thanks for the experience!

Or grab one that looks just like it for half the price.

@@DIYAudioGuy i did this and it has worked a treat for gain setting to the point if an extra 2.5 volts over the ohms law and multimeter method and my system and others I've helped sound 👌

They are supposed to be True RMS, but I don't really trust that they are. The screens are about the same size, but the new one has more pixels, much higher resolution.

rms is just as good as a fluke on the 2001

Now that is a pro tip right there!

Yeah, these are great tools.

Thanks!

I think it's really cool that we've got all these cheap oscilloscopes on the market. I just don't see the reason why you'd pay $80 or $90 for this one when there's another one that looks to be exactly the same for 40 or 50.

@@DIYAudioGuy I agree. And at $40 or $50 you cant go wrong. I dont mind dropping a $50 o scope vs the $1300 fluke lol.

Would it be better to invest into a DATs 3? Considering it's mainly for audio measurement

@@st170ish A DATS cannot detect clipping.

@@DIYAudioGuy Dats has an oscilloscope built in, I can't vouch how good it is

Thanks for watching.

Back in the day oscilloscopes were expensive machines that sat on laboratory benches. I find it amazing that for under 200 bucks there's a wide selection of perfectly fine functional handheld oscilloscopes.

I had the exact same problem. I had planned to do some videos on setting gains with the 2001 but they came out looking like crap. The 2020 is not perfect, but it shows up better on camera.

@@DIYAudioGuy oh well,i think i'll have to buy the 2020 then 😂 Do you know a method to spot clipping without any instrument? Years ago i saw someone use a filtered twitter that would make noise whenever the amp reached clipping,i don't know if i remember right but it could be an idea for another video 😁

@@ilfaraone91 That was Sam, his KZfaq channel is barevids. That method will work. It's basically a harmonic distortion detector. When the amp clips it will produce stray signal and all of its harmonic frequencies. The bass blocker on small speaker keeps it from blowing from playing bass. I could probably build one from spare parts I have lying around, just would need a capacitor of the right value.

@@DIYAudioGuy wow nice! Thanks for the info!

Thanks!

Yeah, you you have to fiddle around with it a bit.

I'm still a little bit perplexed by it. As you saw in the video right before the wave went square it started to get fuzzy at the tops and bottoms of the wave. I'm not 100% certain how flat the top needs to be before I can call it clipping. At this point the only thing that the scope has going for it is that it is a lot cheaper than a DD1.

@@DIYAudioGuy yea if you aren't doing much amp installs then a DD1 is a real luxury. As much as I'd like one I still can't justify the cost just yet... especially when for me the cost is double in my local currency.

@@dna59 Ouch!

yeah on my 2.0 i feel like im still guessing but on a more professional level of guessing

@@mcf3778 hahaha you are correct. Usually I workout the maths of doing it with just the multimeter and then cross reference that with the oscilloscope and it's wave and voltage reading. Gives a better idea than just using 1 or the other.

It's like a movie about a dude playing a dude that's disguised as another dude.

Liumy is the first company to make them.. buy some good leads if your gonna use it daily mine fell apart day 4 but I reached out to the company and they said they wanted to make it right.. but besides that I've been happy

@@lagginlycan159 Good to know they stand behind their product.

@@DIYAudioGuy I need to pick up this device soon so I can check my iNuke3000DSP and see how clean it is. I just did some measurements using my microphone and found the distortion is pretty tame to 25v on a single channel. Any harmonic distortion is over 30dB lower than the sine wave. This matches up with attaching a capacitor to a speaker and listening for distortion so I'm pretty happy these match up quite closely. Increasing the volume by 1dB to 28v harmonic distortion (2nd and 3rd) is now within 30dB of the fundamental tone. Increasing the volume by 1dB again to 30v 2nd and 3rd order harmonic distortion is now 24dB and 27dB from the fundamental tone. And one last time pushing it up to 32.5v (+1dB) 2nd order harmonic distortion is within 18dB of the fundamental tone. And pretty noticeable at this point. I stopped here because the Subwoofer was making unhappy noises because the amp was out of gas. This was done on my Ultimax 18 and was well under 1/4th the subs rated power so this should be all Amplifier distortion. Curious what the scope would show at those voltages and wonder where clipping actually is.

👍

I'm not sure what to tell you. If I could physically put my hands on the equipment I might be able to sort it out, but it's hard to troubleshoot across the internet.

I noticed that!

The LM2020 is auto-ranging so so you just set it to the type of voltage (AC or DC) and you should be fine.

I would have to look that up -- hope I saved the owner's manual.

And they've gotten pretty cheap, so if you're going to set up more than one amp ever in your life you may as well grab one.

That's a really hard question. For starters I have not really owned that many subwoofers. I tend to hold on to my gear for a very long time before I upgrade or replace it. I've really enjoyed my Polk Audio DXi 10s, my Dayton Audio Ultimax 10 with the passive radiator sounds fantastic. But, my favorite always has been and always will be the 12-inch Blue Thunder I had in college. That has nothing to do with sound quality or SPL, it's all nostalgia.

@@DIYAudioGuy I had some MTX Blue Thunders back in the 90's 2 12's in the back of a Ford Escort I was pushing them with a Rockford Fosgate Punch -150 with Pioneer 6 1/2's in the doors I absolutely loved that little set up I had it for a good 5 yrs lots of keg parties out in the middle of nowhere That system put in some MAJOR entertainment hours 🔊🔊🔊👍🏽

@@redman4076 Hell yeah!

I watched this video and apparently I didn't know how to change the waveform, but this video helped tremendously. Thanks DIY Guy!!!!

I will look into it, thanks.

Yes, I have heard that before! I take that as a complement. SId Haig was a badass.

What's the matter kid, don't you like clowns?

Not that I know of.

It all depends on how much airspace you have underneath the seat. It takes space to make bass. If you can get half a cubic foot per side that would work really well with a small driver. I would not try to cram anything bigger than a single eight under a seat. I think the woofer that I used in this video here along with the passive radiator might give You the results you're looking for. kzfaq.info/get/bejne/rs-gaN2G1MDXgY0.html They also sell 5 and 1/4-in version that might work even better. If you order from Parts Express make sure you check out my blog, I've got a few discount codes posted over there.

kzfaq.info/get/bejne/pah-eLejnqesp3U.html

According to amazon that is the one I bought -- from what I can tell they all work the same.

@@DIYAudioGuy awesome I'll get it shipped out and do mine when it arrives!

Two input channels and a signal generator output.

That is a cool idea. I would not even know where to begin.

Because you can get one that is just as good for under $50. You just need to probe the factory speaker wires to check the factory source for clipping.

@@DIYAudioGuy this is true. Thanks for the response ♥️

@@SuperHondaFitDriver Thanks for watching! Hope that you got something useful out of the video.

@@DIYAudioGuy I always do! Love your content and I live that you price conscious! Value is everything!

@@SuperHondaFitDriver for real man, money does not grow on trees!

According to Amazon this is the one I bought. amzn.to/3yBbscW It appears to have a different name this time. Not sure what to make of that.

@@DIYAudioGuy Excellent. Thank you. Do you have an opinion on whether it is worth a DSP in a portable box for the beach, or just tune it well with the scope? Thank you again for all the wonderful information.

@@seanyounk1 Probably not, but if you want to go that route then this is what you want: bit.ly/3PZ2ixD They have battery boards that plug into the amp boards. Perfect for portable boomboxes.

@@DIYAudioGuy Wow! Those are really neat. I would have definitely gone that route accept that I already bought an NVX VADM4. I have book marked that board for future projects. Thank you so much for all your wonderful infomation. I will send you pics when my project is done.

@@seanyounk1 Awesome!

I have not tried it.

I give my opinion in the video.

i paid $80 for my 2.0 so ill say yes... i also have the liumy ac/dc clamp i paid $100 and they make a great team

I did not know they made a clamp meter, I may need to check that out!

I'm going to blame it on a bad patch cable. I was trying something different and it did not work well, lesson learned.

Was I really wrong or was I just trying to make it dramatic for the camera?

@@DIYAudioGuy U got me, Dramatic, but its personal preference u ask me. The liumy seems better. Multimeter is safe, but it has one to 2 to be on safe side.

Also a lot easier to read.

i also still cant read it.... top of the wave still gets wonky

Affordable and effective.

Thanks!