100% Accurate!!! Cheap vs Expensive O-scope! Set and tune amp gain with precision! Like a pro
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- Опубликовано: 13 сен 2024
- In this video, i show how to use a cheap $40 oscope you can find online to set your amplifier gains with the same accuracy of an expensive bench top O-scope. No need for any other expensive gear or required knowledge to tune your amp like a pro!
Referenced/Related videos:
How to set gain by ear:
• How to tune amplifier ...
How to set gain with O-scope on subwoofer amp:
• Set Amplifier Gain wit...
Where to find O-scope:
Search amazon/ebay/etc for O-scope. you will see them for sale. Fine one that is assembled and has included power supply. The units come in white and also black. They are branded by many different companies but all pretty much function the same.
Make sure to like, subscribe and turn on those notifications! Thanks for watching
I got one of these. Helped me quite a bit. I'm new to car audio. I've learned a lot in the last 6 months. I now have 2 Skar evl 12s with a skv2 1500.1 ( it's enough, don't want to upgrade alternator yet), jvc touch screen head unit with a dual AGM battery setup with a stinger isolator. It's in an 09 maxima. Did the big 3 as well. Every wire is 1 AWG ofc. I'm proud of my install since I did it all by myself. Had no idea what I was doing. Through trial n error and many upgrades I ended up with what I wrote above. Also I was struggling to tune untill I saw your video. Thanks man.
Thanks for the feedback. Awesome!
just got my o-scope, can't wait to tune my salt 3k. Hopefully I have enough power for that amplifier. I have a 240 amp alternator, and (1)xs3400 battery. Pushing (2) skar vxf 12's @ 1 ohm. Currently have them on a jp23, but they seem underpowered.
Sounds legit
That's man no one starts as a expert congrats ... On ya install
It’s been two years how’s the car audio been going ?
Hey bro, from one car audio enthusiast to another, thanks for your video! There was alot of useful information :)
Keep up the good work!
Thanks!
Not a problem 😃👌
Excellent easy explanation even for an old guy like me.
Thanks.
Thank you for this video. I bought that O scope because of you.
Let's Have NLA (Next Level Audio) printed on the scopes and sold like SMD did except they will be affordable for us average Joe's..... 🙏
Good idea! 😂
Great idea!! I would buy one!
If I purchased one of the SMD, I'd probably put a decal over it. Dude is a 🤡!
😆
Saved my life, wallet and gear! I say life because my wife would kill me if I had to replace my gear again! Great vid bro! your on that NLS!
Im going to order this this coming payday thanks man.....i like that how you are not arrogant you're just humble
Thanks man
@@NextLevelCarAudio no... Man... Thank you
just seeing you explain the other channels test tone, you're awesome! thank you!
I had to buy one 🔥🔥🔥 life saver next level audio ✌️
Hell yeah
Iam Computer Engineering student and love to mess with this stuff on my spare time. That O-scope should be good enough for most of us. There is definitely other small parameters but honestly, the difference is minimal if you're looking just to set gains.
Put your sine wav in the middle of the screen on the pocket oscope so you can see the bottom.👍
I really appreciate your good faith in sharing your knowledge.
It's made me a better installer.
Perfect timing! just got this little o scope you recommended on another video. was about to find a video about how to use it and this new vid popped up
Awesome!
Thanks for all the informative videos . Appreciate your time making them.
You bet
I have this exact oscilloscope and guess what... it runs on 9v. Which means yes - you can hook up a grocery store disposable 9v battery to it and have a truly handheld accurate oscilloscope! Cannot confirm if this affects the accuraccy or anything, but mine's been running great for ages with a 9v disposable battery connector soldered to the + and - of the power cable input. Just double-sided tape'd a 9v battery holder to the back and voila. No idea why they didn't design it like this to begin with, seems like a no-brainer to me.
Been doing the same thing. Bought a 9v adapter and a rubber band holds the 9v to the back of the device. Still on the same battery even a year later.
I have the same little cheap O-scope. I had to build it myself, it was a kit. And it came with a 9V battery connector-wire with it, to use it exactly as you describe. So yes you did great, it's meant to be used by 9V battery. Power supply must be very precise between 8-10V so a 9V battery is perfect. I just don't understand why it has to be external instead of the manufacturer designed the 9V battery internal in the housing :) would be even easier to use and maintain.
I love the little oscope i just got one last week and tuned my amps... something to listen to..
100x4 and a 1200x1
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.
I just got this same one. Using a 10x probe, my synergy 8.1 clipped about 1/8 volume higher than the scope did. So I just used the amp clip light to adjust it
Glad there is another video like this now. You put me onto that cheap oscope a while back. I was super skeptical about and cheap as fuck to buy one for alot of money, so this was perfect. There is another dude that did a comparison vid too of that cheap scope and he compared it to like 5 different scopes. I forget the youtuber but it was accurate just as you demonstrated here as well... So yea bro, anyone giving you shit for blessing the game with some knowledge tell them to piss right off!
Thanks for the feedback man. Much appreciated!
Very good video ! Thank you.
Thanks for doing that test I would definitely buy one of those cheap ones not worth it for me to buy something expensive when I'm not a pro thanks again
Please do a video on different db Metters for us budget builders
Hey brother I have a cool video idea!!! So you’ll set the gains by ear and then see how accurate it is by reading the sine wave with that oscilloscope!! 👍🏽👍🏽👍🏽
I’ve actually Tried that. But have not video recorded it. Maybe in a future video
I have to subscribe for sure. Keep it up bro 💪
Thanks for the support!
Great video. Thanks for the information 👍🏽
Awesome presentation! I'm new to the car audio world and I bought a Rockford Fosgate Prime R2-750X5 that has C.L.E.A.N. in and out technology that lights up red when it detects the signal is clipped so you can back it off and avoid distortion. What's your opinion of that tech., do you think I should still go buy something like that $40 oscope to double check?
It is a good system. Like a clip indicator on a amp or bass knob. Gives you a good baseline. Does not hurt to double check. I’m releasing a video in a couple days talking about tweeter method. It is a anywhere from free to dirt cheap to perform and is very accurate
😂😂😂 SPOT ON!!! HATERS ALWAYS HATE WITH NO RESEARCH DONE😂😂 NICE VIDEO! BUYING ONE TODAY FOR $37
Hell yeah man
Just ordered my o scope, can't wait to not have to rely on my ears😭
Should you also do the test with your normal settings after you do it with flat settings on your deck? Or does it not matter?
I always do it with my head unit set how I will actually listen to my music
Great content, people its not a volume controll , good videos, next level 👌
might just go ahead and buy this one!!! hope its as accurate as you say it is!
Excellent vid! Can you measure the clipping signal without the speaker connected do the amp? Or do you need to have them with you connected all the time?
Can do either connected or disconnected. :)
I got mine for 25$ now if my box is 43 hz is that the tone i use. Thanks for sharing
In fact your right some people just want a good amount of power and crisp and clear sound its not always about max max max max if you have plenty keep it lower more headroom less loss of dynamic range and less harder on your amplifiers........nice vid bro
Thanks!
@@NextLevelCarAudio with a 40 hz test tone and listening at a sub its very very easy to hear the sine wave starting to clip true in the higher freq its a bit more difficult
What do think about buying amplifiers that are too powerful for what they need to power therefore using lower gain underpowering the pre-in and losing dynamic range ?? Myth or it needs to be really really low to happen?❤
I think having a certain amount of headroom is important to not over work your amp. To what extent tho I’m honestly not sure at when or if at any there are any deteriorating factors. Good question tho.
@@NextLevelCarAudio thanks bro your content is awesome 😎 im trying that o scope today ❤️a big hug man
I used this method to test my Kicker CXA400.1 "400 watt" amp and it made almost 700W before clipping.
Wow! That’s impressive
@@NextLevelCarAudio It was also useful for finding out my Pioneer DMH-W4660NEX head unit doesn't clip on the outputs until 39 out of 40 total volume and this was with the EQ set using a pink noise generator and the Spectroid app. So I knew I wasn't sending clipping to the amp, and then was able to find the clean limit of the amp. So easy, so cheap, don't need several hundred dollars of equipment to do it right.
You got that right. That’s awesome man 💯
@@jamesg8246 The _what_ app? Seems I can't find it...
@@RAW_Reality Spectroid
Just ordered one ! The Luimy one i have is garbage..resolution is so bad i cant see the signal clip until its almost square
Is it a concern that the handheld o scope doesn't have the range to see both sides of the sine wave? Mine is also this way and didn't know if you could clip on one side of the sine wave before the other?
Can you tell me where I can find test tones that can be played on a head unit that does not play discs?
Hey brother I have stereo kendwod Exelon 907S seems no clipping at max volume that weird no. Is 5 volts what do you think
Some head units (good ones, not the cheapos) don’t clip at max volume.
This will identify clipping, but not distortion.
great "how to" vid, thanx man!
You bet!
For my main speaker not subwoofer what sign wave should I use ?
Can you do a video showing and explaining how to calibrate oscope please?!?! Mine came with crappy instructions that actually had 2 different contradicting explanatioins?!?! I got aggravated with it and tossed it in a catch all drawer. I have a system in my car and I've been wanting to use my oscope. My scope doesn't do anything but show error message and very irradiate graph...
I usually set my gains with a 0dB sine tone as I listen to a lot of non-mainstream trap/EDM. Is there something I can use to figure out what the maximum dB is of songs that I listen to, or can you recommend a dB sine tone I should use for my requirements? I know -5dB is the default but I'm not sure if this might be too much or too little and I'm really looking to maximize my gains. Thanks so much for any help you can give!
I use 0db as well. I also listen to a lot of bass boosted music. I don’t have that knowledge of how to do what your asking. Sorry bro. Maybe someone else will chime in
When setting gain on four channel amp just connect the probe to the speaker output as well like for subs have my sub amp gain how I want with the 40 dollar scilscope you mention from Amazon but now I want to set my 4 channel amp
Yep, that’s it!
Great video man
Thanks!
One question: How to test a big amp for distortion? No scope can take that amount of power right?
I mean the output of the amp, turning the gains slowly up to maximum...
I have a video here of my mini scope taking on my 12k just fine. Also, check the video I just released yesterday. Also, in a few days I am releasing a new video with my bench scope and DIY tweeter detector on the amp to show Sine wave and clip point
This video is Next Level!!!
Thanks 🙏
Thank You!!!!😊👍🎉
You bet
Do u have a video on how to use this tool?👀👀i just order one
I need help with a fancier o scope.. can ya do a video with the fnirsi 1013d o scope
Cool, i have order same or simelar on ebay. will be cool to try out, have a monoblock i need to figure out how it clip up to the clip light on the bass level control in my car audio.
Last part you said alot.great job look foward to more vids
Thanks!
does anyone know how to change the frequency on one of these units?
Can you do a video on subsonic filter and also when tuning do I set the subsonic filter first and then the gain or reverse
I kinda go over it here:
ruclips.net/video/ChhbQfpV8wk/видео.html
Dial in all your filters first then set gain. Gain should be the last thing you touch.
Hi, need advice. I bought the same O scope from amazon. I have followed your videos to the letter yet i cannot get my O scope to display the clipping wave like you have here. I have my setting set as you do here but i only get very tiny display. Nothing like yours. What am I doing wrong? How can i see the same as you have here? I tested my radio first. Found the distortion is just pas half way up volume. Then I started adjust my amplifier gain. It sounds good but I feel lost. Can you do a video to better show how to manipulate this device better? Thank you. Im installing 2 two channel amps on a 2019 BMW K1600 Grand America using the output of the stock sterio to the input of the amps. It has a line level filter on both designed for this. Front and rear speakers as well.
Hi bro i want this o scope.
Can u give me link where r can buy....
I just bought the mini oscope. How do you test the deck RCA? I've hooked the clips up to the rcas played a 40hz tone but no wave is shown on the scope
You need to adjust the voltage on the scope. They are low level so sensitivity needs to be set higher to read it properly
More info on scope settings here: ruclips.net/video/nKQqcQ5q34I/видео.html
@@NextLevelCarAudio thanks man for your fast reply and info! Much appreciated
@@NextLevelCarAudio I did try that and it didn't seem to make any difference
Hmmmm.... that is strange. Works when I do it. Not sure what the issue may be. Sorry man :/
So I test subs and mid range speakers with 40 hertz and 1000khz with tweeeters ?
That’s what I do
What if you have components and the speakers are wired together?
iknow u said just fade the speakers so the test tone want damage door speakers well my lci is taped into front speakers which gives signal for subs. so fading to rear will that effect setting gains
Yo ty for this... Still cant wait to see your tweeter version.
That’s going to be my next video! Stay tuned
Posted link good video for that
I have a oscope like this but when i tune my amps it don’t square off when clipping the wave is always fuzzy
Why does my wave start in the middle not rise from the bottom like yours?
In have no idea... never had that issue. Sorry man :/
@@NextLevelCarAudio I'm having this exact same issue... mine reads from the middle showing the top and bottom of the sine wave. I've watched this and your other video multiple times trying to see if I was setting something wrong. 20v does not give me a large enough window to see the full sine wave with it reading from the middle. (I have your exact "cheap" O-Scope). If someone finds the answer to this issue please let me know!
You have to go to the 20v symbol and click the yellow box off of it then turn the adjust knob till it moves from the middle to the bottom
Thx for the video 👌🫡
Im tuning my factory head unit should i keep the oscope at 2v?
I bought the oscilloscope and I cannot get it to work properly at all the sign waves are not show up bigger what am I doing wrong
Will it withstand/measure well when Vpeak is > 50V?
Any chance ya have a video of the dso nano o scope with x10 leads. Setting mids n highs and subs. Love ya videos from the uk
I do not man. Sorry. Was thinking of buying more scopes to test out... so maybe in the future
@@NextLevelCarAudio all good dude. Am sure from this video i can run my dso ya explanation is excellent. Hopfully mew subs and amp be here soon and the rest of my gear can go in. Will defo be using your videos to set it up. Used the smily eq today wow wat a diffremce.
Awesome! Thanks for the feedback!
Great video
Thanks!
How to check crossover frequency
Like the fox hat do you ride dirt bikes
I use to.... quads and bikes. no more tho
Well damn. I just spent $190 on a dd1.
Thanks for this video! I want to set my gains for my amp however I'm not sure how to turn off the signal to my front speakers so I don't blow them up with a 40hz signal? It's a pioneer avh501ex...any ideas?
If they are crossed over then no issue. Or are they stock speakers running off head unit? If so, just adjust fader all the way to the rear. That will cut out the front almost completely
@@NextLevelCarAudio I am running after market 6.5s directly to head unit. Have my head unit crossovers at 100hz but will now attempt doing the fade option to see if this solves my issue. Thank you!
Awesome. Yes, that would work just fine
Will amps clip at different frequency, if my head unit is at its max clean signal and I know ima be playing 30hz, would the lower tuning change where the amp clips at.... or is it clean at any frequency once it’s clean..?
Only if you are boosting certain frequencies.... for example if you are bass boosting say 60hz, but dial in using 40hz 0db tone, the. You will be over clipping when you hit 60hz. So need to be aware, yes.
Great videos!! Can you tell me how exactly you connected your bench top oscope; I got one used and it wont give me a signal? I'm thinking maybe I'm missing correct wires. Thanks.
The clip to negative speaker wire and probe to positive speaker wire. That’s it.
@@NextLevelCarAudio that's what I did. I wonder what I got wrong or if its faulty. I have a liumy and found absolutely no clipping on my deck , RCA or amps. I find that strange so I wanted to recheck. It's a kenwood excellent deck and monogram alpine for sub and 4 channel bridged to 2 channel for rear sets. Gains and volume are maxed and no clipping on liumy and I hear none by ear.
Wow.... that is strange. Did you try tweeter method? Cheap and easy.... I am releasing a video in a couple days going over it.
@@NextLevelCarAudio I'm not familiar with that method. I'll be anticipating your video. Love them, thanks.
Thx sm 💪💪
Newbee question....What about if you have a DSP ?? is it a different process? Or does it even matter as long as the amp gain is set correctly?
Will give you better stage for your music and quality. But will still need gains set properly as described regardless
Setting distortion by ear is simply not possible. Distortion is occuring before any audible change occurs that the human can hear.
I want that test speaker!
😂 😆 😝
Still the happiest bass head ever
There are differences between the subwoofer connected or disconnected?
Slight voltage differential, in some cases more apparent than others. In my case, with how my system is setup and the power I’m running, it did not matter if I had them connected or not, as the results were negligible.
Would this work on headunit RCA preout to see highest cleanest volume?
Yes
@@NextLevelCarAudio how would one set that up to see max clean volume from rca pre-out connections ?
RCA pre out or low level hardly ever clip even at Max volume. Just set as normal and put one probe on outer sleeve and one on inner.
Hey brother. I blew my amp using oscilloscope because the settings was not set correctly. I blew my sfb 8000.1 sundown audio. I cried then got my ass up and order down4sound and order one more. Then im waiting for my amp too arrive this Thursday. I have my back up amp and this time i set the settings correctly how your video show me. And it did not fried my amp because of your video haha
Dang man, that sucks. Sorry to hear that. But glad it is working out for you now!
@@NextLevelCarAudio yes it is brother. And i i got me two 15inch zv5 sundown audio subs. I have question. The box says 2000 rms. What the actually highest rms can the zv.5 put out on rms. They told me 4000 rms. But since you have 3 of them. You should know the answer.
My 3 are getting about 5k each (15,000 total) but I have very solid electrical. They can definitely handle 4K each. Just don’t send a clipped signal to them and your golden
@@NextLevelCarAudio Thanks brother!! Im glad there people like you that helps and comment back. Im going be using my order that i order SFB 8000.1 Sundown audio mono block. If my wiring are solid connected can the subs ruined my amp any kind of way of it hurting it.
The only way your gear will get ruined with your setup would be if you drop below 12v or you send clip signal to sub. So set gain properly and have good electrical. Done ✅
Advice for one mono amp, one sub, one 4 way channel amp, and after market head unit and speakers would be nice. You have a set up mugs wish they could have (financially).
What do you need help on specifically?
@@NextLevelCarAudio I can't get a reading on the o-scope for nothing. I have a kenwood excelon XR400-4, with JL audio C1-650x coaxial in doors and rear. Powerbass 800watt asa 400.00 2 channel amp 10inch jl audio w0, which I'm upgrading don't know if I should do a 12in instead. In a 2010 honda civic coupe.
That’s odd.... must be a faulty scope. If you are manipulating the knobs as described and not even seeing a line. That’s an issue. Does the scope say waiting or triggered when you are playing the test tone
@@NextLevelCarAudio yes I was able to get reading from sub and amp and adjust it, but not the 4 way amp.
That’s wired man... not sure what to tell you or what the issue would be.... :/
I have a 4 channel amp running 6x9 for rears and 6.5 components for doors.my question to you is should I set my hpf. Of full or lpf?confused
HPF around 100hz... you don’t want them playing below that. It will sound distorted, below 100hz you need a subwoofer
Thank you
@@NextLevelCarAudio gonna hammer you with a few questions here, if I set my 4 channel for my mids/highs at 100hz on hpf what should I set my sub at? LPF 100hz as well? Or 80hz? My mids and highs have a range between 60hz-22 Khz, is it ok to go lower than 100hz on them? Also you mentioned that we should setup all our EQ settings before setting gains? Can you explain that and what should I set the EQ min/max dial at on my amp that's above my freq dial and below my gain dial? Thanks for all your knowledge!
100 is just fine for sub LPF and mid HPF. You set EQ before gain because if not, you can introduce distortion by increasing the db on your EQ after gain is dialed in.
Dude it would be sweet if u had sum team spl shirts let's get swicky 🎉 u would sell out
QUICK QUESTION ARE YOU ABLE TO TEST THE MAX VOLUME WITH THE OSCOPE OF THE HEAD UNIT BUT USING RCA OR DOES IT NEED TO BE OFF THE SPEAKER WIRE ?
rca are low voltage so wont get proper readings
@@NextLevelCarAudio ahh thank you!
I seen your other video. You said to test mono for subs on 40hz to set the gain. Now would I use the same thing to set up four channel for speakers (6x9 and 3.5 tweeters)?
Absolutely, but 1000hz vs 40.
You can use this to train your ears too to listen to distortion
hell yeah!
SMD DD-1 cost more than the system this is great
Lol
When setting the amp by ear what volume should the deck be at?
Max unclipped volume. If you don’t know what that is, then industry standard people use is 75% volume
@@NextLevelCarAudio and bass know at max right?
Yes, or max you will ever turn it. Then just don’t go past.
@@NextLevelCarAudio can you set it with music or it has to be with a 40 hertz tone?
Has to be a sine wave. So yes a tone
I got two of those cheap ones, I can't get it to show what yours shows as set up. Any chance you could do a set up on the oscope how you got to those settings on the screen?
I have an older video of me setting it up. Look for video called cheap o scope.
@@NextLevelCarAudio thank you 🙏
So I'm setting my gains on my amplifier right now and it works great but where's the voltage Vmax vmin vpp and vrms which one do I use
I think I might have found it I think it's vpp
So next level do I use VPP yes or no?
Not sure man, I don’t recall and I won’t have my meter with me anytime soon. Away on business now. Sorry
It's cool I definitely figured it out thank you . anyways I just made sure I had a clean sine wave then used my DMM using the square root method to get close to the Watts that I needed to match my subwoofers RMS. then when I went back to the oscilloscope I seen the same voltage that was on my DMM on the vrms of the oscilloscope. So boom there it is. BTW thank you for showing me this oscilloscope I've been wanting to buy one forever but didn't know which one to buy... this was the best one ..easy to use and had the cleanest picture to look for clipping, easier to read than the Liumy..thats for sure...yeeeeeeew💪💪🤙🤙👍👍✌✌🔥🔥
Clipping kills coils because the speaker stops at top and bottom of movement so that sign wave being smooth up and down think of it as a speaker I’m and out when it’s flat on top on a hard clip is why people smoke subs when they had them for 30 minutes and they are “Junk” subs no the subs were fine you don’t know what your doing! Anytime you hear someone say that or if they smoke a lot of subs because their amp is to “powerful” don’t listen to them they don’t know what they are doing.
Yes sir.
F' SMD. Thankyou for this video.
I have a Clarion equalizer, and the manual says to have you HU at 80% and only use the eq volume from there only. For me to set the gains I need to have the volume right. Can I have the HU at say 50% and the eq a bit higher? I have a slight hiss at higher volumes, and I figure if I even out the volumes a bit I can possibly remove that hiss. I do know that the gains should be set with a max out volume or until it's just bearable. Just very confused about the volume to setup gains. Thank you!
That’s totally fine. As long as you don’t go past whatever volume you set your gains at. So that you don’t clip.
what is this powered with, USB?
Standard wall outlet.
Bro I body and I said it like yours but I can't get the signal wave lines to go like yours can you break it down for me or let me know what I could be doing wrong
What signal? Frequency?
I have a 1986 corvette.i installed a alpine alpine cde172bt deck,two infinity Kappa front dash plate speakers 70 Watts rms with an infinity primus 70 Watts rms ×2 amp.door speakers are infinity kappa 6.5 component 100 rms and rear speakers are 6×9 infinity Kappa 110 rms. with a infinity Kappa 100 Watts rms ×4 channel amp .one 12 inch sundown audio v2 1000 watt x 1 rms subwoofer and a Rockford fosgate t 1000 rms x1 mono amp.wired into 1 ohm.i have in a custom box tuned at 35 hertz.i bought a ebay 200 amp alternator for 150$$ and put the big 3 wire system to beef it up.regular interstate battery.my problem is that when I drive at night and turn up my bass my headlights go dim.i was thinking of buying a xs power battery for 3000 Watts and a mechman 240 amp alternator.i think the alternator is not rated at 200 amp for the price.i need your advise before I drop 600$.thank you.
I’d definitely go Mechman. They are rated very well even at idle speed. That with your big 3 and under hood AGM replacement I’d be shocked if you are still dimming. If you are, at that point it may be that Gains are too high.
@@NextLevelCarAudio thanx a lot brother for all your help.you sure know your audio.i watch all your videos and learn a lot.just wanna drive my vet and pound the bass lol.thanx again. For responding
You bet!
Hey next level... can you read the voltage of how many volts are coming out of that amp on that scope? Let me know cuz I'm going to buy ASAP if it does
@ next level..How does that oscilloscope connect? I see it comes with a 9 volt cord but do I plug that straight into the wall and does that cord converted back to 9-volt I'm confused. Help.. because when I went on the site it says not to use with anything over 9 volt or it will fry it
Some have a 9v battery input, some have 120v ac wall outlet input. Depends on the model you buy
It does display voltage
@@NextLevelCarAudio I just ordered the etepon ...the same exact thing different name... but it comes with one of those plugs . I also ordered one of those little 9-volt battery adapters with a lithium battery rechargeable so I can take it outside or wherever without a cord. But if I wanted to use that cord it came with. do I just plug that straight into 120 volt wall socket that's what I was asking earlier. I don't want to fry it it says it's a 9 volt battery cord . does that power cord convert high-voltage into low-voltage(9v) is all I'm asking?.. I know I'm asking a lot but I'm just curious sorry
Yes. The wall outlet has a voltage regulator as do most handheld electronics. so Its not going to get 120v lol. You good
My sign waves seems to move really fast is there a fix
Just tweaking the knobs perhaps, not sure exactly man. Sorry :/