HOW TO SET YOUR GAINS PROPERLY!-The BEST DMM Oscilloscope Under $100!!! LIUMY LM2020 Car Audio
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- เผยแพร่เมื่อ 16 ก.พ. 2021
- I've done the research for you guys! this meter is accurate! it does everything you may need it for in your Car Audio builds? It does Frequency, AC, DC, Oscilloscope, Current, Continuity, and bets of all, you can set your GAINS PROPERLY with it? This unit is a game changer!
Meter in Video:
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Thank you for making this video I just got one of those keep up the good work man
Awesome vid man. Thank u.
i just bought one of these... most of the videos explain how to do it but dont do it well... YOU hit it on the nail...... GG
Thanks for the good video! I was using the previous model but the resolution is not even close as this one and it makes it harder to be accurate! I just ordered this newer model and I can't wait to start using it!
Heck yah! That goes hard! Going to buy it rn!
Good work ! Thank you
Perfect explain! Thanks!
Forgot to add this thank you for explaining it too was very helpful
Thanks 👍
Good looking tool! Very detailed compared to the cheap one I've had for a while
Even the lm2002 isn't this good.
When testing radio max before clipping- my sine wave goes north out of the screen when i get to volume level 25, how can i get back to seeing the top of my sine wave?
Would you mind doing a video and showing us step-by-step exactly how to set up the small Ascope in the settings because I cannot figure out how to get my graph to match yours I want to follow you along in the video and I’m super frustrated I can’t find that information anywhere, just need a step-by-step how to set it up to test it like this.
Great video. Where did you order this? Amazon?? I'm looking there and they all seem like knock offs. Liumy is not on top of the device like yours. I'm worried about getting a low quality device making it difficult to see clipping points. Thanks for the response
Wanted the liumy lm.2020 bought the cheaper vevor et828 and its the exact same meter down to the storage bag and packaging
I bought the LM2001 model 2 years ago. I never like the resolution for the wave pattern. I think this one is better.
Mych better
I have no idea why, but mine came with several test leads of different testing types.
Can this be used for the 1000hz test tone for setting mid range amps too? Not just sub amps?
I bought a cheap oscilloscope from Amazon and could only get the 40hz Tone to show good waveforms and when trying higher frequency of 1000hz since I'm trying to set my mid range amp for motorcycle and can't use low hz on bikes it won't show the waves no matter the settings.
How do you get those probes to stay in place on the speakers lol?
i need your help please 🙏🏼 does a cheap oscilloscope (5mhz bandwidth) shows me a full sine wave above 50v on the output of amplifier? The reason im asking is because mine one always squares it on anything above 32v output (amp). I have tried changing the amplitude on the oscilloscope by pressing the voltage button from 10v to 20v 50v 100v 200v and the arrows to put the sine wave right at the bottom so i get to see the top of it but still, so im not sure if im getting a square top or the wave is actually going pass what my cheap oscilloscope can show :/ Amp is 3000 rms which can go up to 78v all i need is 57v output but im not sure if is a dirty signal or not. Amp isn't clipping (light on it) until i go pass 80v output. Please give me your opinion on this one 🙏🏼
When you test the Head Unit for clipping, where do you put the leads? At the RCA outputs or speakers. Everything in my system i just installed is connected through RCA to the amp.
Check at rca for clipping at HU.
Breaks it... "... we'll see how good those are..."
Just comedic releif. That shot was actually from later in the video where i was setting up the sine wave and my time window was wayyyy off. Makes it look broken. That's all
I have the MUSTOOL 8206? Any good ?
Thanks for the video. My waveform was so tiny I couldn’t see it. I finally got it large enough to see. Trying to set gain on an amp, but rather than clipping, the whole wave starts jumping up & down across the whole screen. Any tips on where I’ve gone wrong?
Change time scale
@@ATCA Thanks for the response. I believe that’s how I went from just a blurry stripe to an actual wave I could see. Now the only change I get from the gain is the whole screen jumps up & down. Wave shape doesn’t change.
@@1970351c keep going
im just getting into building guitar distortion pedals (TS808) tube screamers and Fuzz face . im wanting to get an Oscilloscope to be able to see how my circuit changes the sine wave at each component , would this work for my application ?
It will do exactly what you want. Itll show pwm and square waves. Ill make a video soon about this unit, how to use it, and how it shows different waves
Thanks for the video. I want to use this to measure the waveform on my inverter generator. Do I have to put the probe on the 10A port? Thanks.
No. Do just like the video
@@ATCA Really appreciate your instant response!
@@TangDynasty1983 nor a problem
1:21 you can measure Hz?? this is good if you want exact value and on your amp is for example value from 50 to 120 and you want 90Hz but it is not exact. And measure terminal where are speakers connected will give exact value.
👍
So if you put everything to flat, (bass, loud off, treble to zero, sub at zero, no bass boost, and u set the amp gain just before clipping at the head units max clean volume, wouldn't the sub clip as soon as u put your head unit settings back to the correct settings that the user enjoys for listening? Thanks
The idea is to leave the HU at O. Maybe small increases ir decreases. Dramatic changes on the head unit is a disaster for the input signal. If you have to adjust the stock hu for your speakers, like you want more bass or something, byou need to set before you set gain on the amp. But ideally using the "crossover" function on the radio wont effects the "sub" output much in this manor. If you have a cheap head unit with only one fukl range output or youbhave stock radio with only a single LOC, then you are correct, adjusting these settings after setting the gain can DRAMATICALLY change the point where the amp clips. The idea is to have the amp set to where it will never clip.
Heres another scenario:
you listen to the radio at volume 20/30. And you set the gain there to get the most from your amp at the volume you listen to. This os a good scenario. However, when you're buddy borrowz your car or you take ot to the dealer and they test drive it and crank it up, the subs have the possibly to clip and blow. This happened to Exo Contralto. His girlfriends car was taken in for repairs and he set it where he wanted. He came back and the subs were miraculously blown. Ideally you can turn it all the way up and bot have this problem. If you naturally listen to the radio lower, theres sometimes a settings calles SLA or "source level adjustment". This you can use to decrease the source input and thus allow you to the full range of thr volume dial and have the output level where you decide.
I bought an oscilloscope on Amazon with reviews from people saying they set their gain with it. When I'm trying to use it I don't get clean waves like you have. It looks like a seismic activity meter. Like someone with Parkinson disease is trying to draw. What have I done wrong? Someone, ANYONE, PLEASE help.
Kunnen we de LPF en SUBSONIC afstellen met een oscilloscoop?
What is the maximum Vpp that this unit can measure using the stock leads?
I think well over 200 volts. It can graph anything it can read DC or AC
Did you use a CD or an app on your phone for the 40 Herz bass tone?
App
any chance you have a pdf of the user guide? i have lost mine. tried the supplier support email but i get no response. Perhaps you could take some photos.
I dont have the original
When I measure my max radio volume before clipping, it goes north off of the screen. How can I get it back on screen?
Use the "range" settings
Ahah, thought that was for if I had different probes. Thanks. I'll check it out this evening.
@@barrysoileau5319 just keep pushing the 2 buttons til its in range
At what volume? I'm running into a problem. So I did everything you did except when I turn my volume up to distortion I can't see the wave anymore. I know I'm not doing something right
You need to change your Voltage range
I have the same scope, I can run max volume on my pioneer 80prs no clipping, 4.3 volts, 45hz. When I set my gain ony bass amps, even using the time control on the Lumi, the sin wave stretches past the screen and I cannot see clipping, I run a big system, 4 SALT 8ks on 15.3 volts of cmax lithium 300ah, any suggestions? Thanks
Use the range control
@@ATCA found the x10 setting yep worked !
Do you have a link to where you can purchase this?
In description
So I can use this to find a problem in an amplifier?
Absolutely
can u set cross overs with this?
Supposedly there's a way. I'm unsure how. I video the part where i tried and i scrapped it
Can this be used on a 1500 watt amp?
Any size amp
Does anyone knows where you can buy it? amazon doesn't works.
www.amazon.com/Oscilloscope-Multimeter-LIUMY-Professional-Automatic/dp/B08832JX4H/ref=mp_s_a_1_1?dchild=1&keywords=liumy+lm2020&qid=1617039366&sprefix=liumy&sr=8-1
@@ATCA
Thanks. I know this link.
But you can read there:
Derzeit nicht verfügbar.
This means the device isn't available.
Thats the same as the Kmoon
Huh?
@@ATCA exact same device different brand name…
@@bencrosbie there's a ton of clones. The lm2020 is the OG. That's also why its $20 more sometimes. Its the original. Not the copy
Z
Awesome explanation vid 🫱🏽🫲🏻
I'm glad you like them :)