Amplifier Tuning Settings How To - Gain, Crossovers, Bass Boost
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- Опубліковано 26 лип 2024
- How do you tune an aftermarket amplifier? What is gain input sensitivity? What are crossovers and bass boost? Can we tune with a multimeter or should we use a purpose made tool like the SMD DD-1 to detect distortion and clipping? Let's find out!
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The Chrisfix of car audio
Right.
I thought no one realized that
Wish
fact! lol
Love this lmao
Great demo! Sometimes we forget to explain the basics and this video does a great job. Thanks Mark.
BigDWiz Hey Big D. We need more amp dyno test.
I feel like I owe this guy money for the education he has given me.
It's about time I can't tell you how many videos I've watched that of either been too technical or not enough. You inform me of things I've never been told before and did it in a way I understand.
thank you,
Derik from Arizona
I was an installer for 19 years and did a LOT of brands. I am loyal to a handful and I have seen some favorites take a nosedive in quality. Two of my cars have the ENTIRE system replaced from the head unit through the entire audio path. My 'zip code car' had a Mach Audio system but only three channels of amplification were added. Even into my 50's I don't think I am capable of leaving ANY stock sound system alone.
Hi not sure if you will see this but I was wondering if you, I bought a JL rd 900/5 and for mids it’s has 70 watts rms @ 4 ohms but I purchased a component speakers for the front Alpine R2 S65c it basically says 100 rms . What I am wondering is should I buy another amp for the rear (they are going to be similar alpines but 2 ways) or do you think I will be good? I know sometimes with like my home audio I could get an amp that only puts out on paper a small rms but they push speakers so good idk if it’s the same or not I mean if both speakers are 100 rms but my amp says 70 ? I know if I just push the fronts it will change to like 200 I believe so I’m just not sure really. I am also putting a dsp alpine as well 6 channel
Pro tip: The issue with setting gain with multi meter is you should multiply the voltage by .707 to get the correct RMS value. This is why you had distortion and needed to turn the gain back down. I bet if you measure it again after using the DDM it will be around 17.2v👍👍
I’m not trying to criticize. Your info is spot on as usual.
So my equation looks like this=(2 ohm x 385w RMS)=770 Sq rt is 27.748. So multiply 27.748 by .707?
Kraken King
That is how it appears to me, that’s how I will tune mine. Not everyone can afford the fancy equipment so I’m thankful for this comment.
his setting was not way off, look at how close he was to the distortion limit ( 6:09)
I just followed this video, and it took care of the smell and amp shut off. I waited for a bit but no confirmation.
It also will make a difference on the meter you use. MANY of the DVMs (Digital Volt Meters) on the market today are TRUE RMS, meaning they already show the RMS value, instead of peak voltage of an AC (Alternating Current) signal. Any signal above 0Hz, is AC by the way, that is what the frequency is a measurement of, how often the polarity is changing, (actually 1/2 of how often is changes since it is showing a full repetitive cycle rate, so it needs to change twice to get back to the original polarity.) Greatly simplified description...
Anyway, IF the meter he was using is NOT a true RMS meter, the voltage the meter was showing would have been HIGHER than the actual RMS voltage, and with a sine wave, like he is using, the RMS voltage would already have been 0.70 volts LOWER than the displayed voltage.
Thanks Mark for all your videos. I am regular do-it-yourselfer and this information helps me understand the tuning process
You do realize you're doing some very, very good work, Mark. I'm building a system now and your channel is teaching me a lot, and I've been DIY-ing for 30 years. I'll be donating to your Patreon soon! Thanks!
1:53 Gain is not a Volume Knob. so hard for people to understand.
especially teenagers. Because their buddy told them to crank it up!!!
all knobs to the right
haha
"just crank it up"
all knobs to 11
For those of you who don’t really know who this guy is..let me tell you. Mark is the Lebron James of car audio fabrication. He’s a very detailed professional who takes his work extremely serious. He has every dam tool you could think of at his disposal to make the job look as good or better than factory. Whatever your audio needs are, Mark delivers. I’ve seen many other car audio fabricators. And all have unique talents. However Mark, (IMO), is the undisputed KING of the tube.
Haha there are a lot of guys way more talented than me, but I'm doing my best to make progress and get better with every build. Thanks for the love and thanks for watching!
I use his videos as much as I can. I wish I could afford the tools to do that kind of craftsmanship. But I take my builds just as serious.
@@CarAudioFabrication only if you had your own school
So hes not even Kobe or Jordan...? got it!
@@molonlabe7750 savage
On a lot of these controller units and amplifiers, I really wish the manufacturers would spend the extra time to put a tick mark or an arrow on the dials. It would really help a lot of us make adjustments especially while in the car and confined spaces.
Very educational video just put my first one two days ago and I’ve been running it with the knobs all the way up cause no one taught me how to use anything but your videos have taught me so much in the last two days
Wish I could afford the SMD-DD1
I'd be interested to see the output on the volt meter after you tuned out the distortion. Great video though!
Ian McDonald I was thinking the same thing
Ian McDonald me too. Let’s see it
Ian McDonald I’m guessing it’s 17.2v ish’ Measuring with voltmeter you need to multiply by .707 to properly calculate for RMS. Just my understanding. I could be wrong.
His POT position using the DMM is a tick higer than using the DD1. Pobably cause he readjusted the stereo volume before using the DD1. Doesn't really matter, I'm cranking my ACDC to MAX everytime!
This guy is the best on UA-cam extremely detailed in explaining the process as well as the technical aspects of equipment and its proper use
When you use a dsp like the audio control 608 and you do all your adjustments on the dsp. Do you leave the amplifier crossover on off or no crossover or you further adjust on the amplifier controls?
Nice Video. I have a friend who has advanced knowledge of state of the art car audio. He has a 4000 watt 18 speakers system which sounded unlike anything automotive sound system I've ever heard...the amazing aspect is the specialized insulation system of the vehicle rendering the immense sound undetectable from out side while the doors are shut...it is truly amazing the tech mankind has achieved.
This guy's channel is badass!! I wish I had the kind of money it probably takes to have him hook my stuff up, from the ground up!!
Save up kiddo you will get there some day.
@Mark, I just cant thank you enough for this video, my installer have made horrible mistakes on tuning the new amp and audio was worth than stock system. I followed you guidance and my car audio is 300% better than stock now ... 😁
Respect mate 🍻
Ce
Great video job well done Mark, on explaining the total tuning process!!! 👍👍👍
Hi, thanks for your videos! The bass rolloff as you turn on the volume is rather a result of loudness function in the unit, that compensate humans hearing system non linearity. As your volume is low loudness function tilt up bass and highs. As you increase the volume the tilt up becomes smaller until zero tilt up from some volume level (defined by manufacturer). This looks like bass rolloff what is actually not really.
I'm not talking about the Constructive comments on here but it's funny watching people point out Every little mistake Mark makes,every time he mis labels something or moves his finger in a way that,that person wouldn't personally move their fingers.I have a question.Where is your Video?Where is your UA-cam channel?Where are your almost 500,000 Subscribers?!?!???It's easy to criticize someone when you have the advantage of watching after the video was made and being an outsider looking in.Keep up the great work Mark! You're so very helpful to Car audio newbs like myself.
Dude literally saved my life.
Thank you for another great video. You supply information that isn't readily available, all explained in an easy to understand manner.
Thank you for the time and effort. I've watched a handful of your vids, mostly revolving around the Audio Control amps. I'm very, very interested in them. That said, in other vidz, you've shown the feature LED that AC uses to help set the gain. I'd love to see an addition to this vid, or perhaps a separate one, where you use the Scope or DDM to test out how accurate their LED is. :) Once again, thank you.
I’m a beginner on car audio and I’ve found your videos very helpful
Exactly what i needed to know, THANKS!
finally someone who really knows what their talking about . thank you, it's been really helpful !
great video, but I noticed that you had low battery on the smd dd-1, I had that happen to me thinking my signal was distorted but when I changed my battery I could go a little bit more before distortion. great vid though for setting gains and crossovers.
For the equation that was used @ 4:00 did you use the amplifiers RMS power or Max power? Also, what if the speakers you're using are rated for less power than your amplifier can put out?
Wow! the amps look amazing!!!!!. Awesome video
What's so amazing?
Hey there, i'm having issues with a phoenix gold SX system in my Audi. The amp keeps going into protect mode. The audio place I purchased the equipment from installed it, and I've been back 7 times trying to get them to fix it, and they don't know whats going on. They won't return the equipment, etc. Any ideas why the phoenix gold 1200.1 would be kicking into protect even on low bass / low volume ?
Did you find the problem?.
Poor ground ?
@@cdracos1 nope. Still have em. Have had issues since day 1. Gave up trying to fix them long ago
Man i love their product. If i had my own shop that would be my premiere line of amps. Especially since the auto industry is trying their damnedest to keep aftermarket equipment out. Loving the integration
I like crossovers. I always attempt to make the bass sound like it's coming from the doors as much as possible without distorting the mids and highs.
Thank you for making these videos. These will come in handy soon!
@ 6.25. " You should never turn up the volume past this point on the Raido !. What Point is that ?
@@Assassin1710 The 3/4 point of full tilt on the head unit.
It might be worth adding that some amplifiers (DD Audio, Audio Control, Rockford) have a clipping indicator to help set the gains properly. I has been my experience that the DD Audio clip indicators on the D Series are pretty well spot on with the DD-1.
Problem with this method is that usually car CD or USB players play a lot louder than Bluetooth, for example. So if you plan on listening to music through Bluetooth/aux cable, you should make sure you play the test tones through those when you are setting the gain. Only use a CD if you plan on mostly listening to CDs.
This is because cd quality is better than the other forms of audio you are playing.
There is more information there.
On my headunit i can set levels for either as well as enabling media extender
Great vids dude, much appreciated 👍
Would have been cool to see what the difference in voltage was between the voltmeter and the tuner setting
They are the same lol
Much help, thank you!
Dude! You’re bad ass. Everything is very properly explained. Thanks man. Great teacher!
Thanks Mark! Now truly understand that even though I've match the amp voltage - Sub RMS doesn't mean it's not clipping.. I guess time to get one of those DD1..
Great video, would like to see you do one using a scope and also setting gain overlap
Very well explained! Keep em coming!
I finnaly finished my system that took me 2 weeks of work, now this will be super helpful to tune it right
Hey mark, i want to ask, if i install a dsp upstream of the amp, if everything is set perfectly on the dsp, what should i do on the amp
Thanks
Wow. That was 5 years ago and the info still stands today.
Actually u r very good to explain all the things. Like I completely understand by watching full video . Without repetiting. Thank u car audio 🤘
Holy moly.
WOW.
You made this very simple for my understanding.
Thank you for teaching a boces class on production and sound quality, basics of sounds put so seamless
More videos like this!!! Thanks.
So by setting the gain properly, it allow me to turn it up more without distortion???
Big Ounce yes it will be a bit quieter at lower volume but it’s supposed to be a lot of people set their amps to the max settings thinking it will be the loudest but it over does it and actually isn’t as loud just distorted but if you tune it you can get that max crisp volume without a bit of distortion:)
Very helpful, thanks for posting
You have the factory amp signal going into the high level input of the after market amp?
So much more involved than It seems...one day I'll get my system sounding right
Much appreciated, love the video very descriptive on making the knowledge easy to understand.
The only thing I would comment on that would make it better is your transition timing from one sentence to another specially when you go from an edited video speak about one thing and transfer to the edited part that follows. You talk a little fast so for some it may be hard to follow on a listening paste. Little longer pauses between sentences. Liked and subscribed. Thanks again much appreciated
Watching this at midnight 2.00 am in one remote village of India where these tuning is considered to be as alien technology, i will be able to tune my Focal Amp, JVC Stereo, Infinity component speakers along with Rockford sub in tomorrow morning, thanks to this video 😊
Lost me when he said very simple math and started with letters😣
It’s very simple, but in saying that if you never did any electronics in school then it might be confusing
@@damonvanheerden3605 i never did bud so everything is confusing 😒
I know this is a very late comment and you may not care past this point, but in the most simple way think of math as if it never had letters R=resistance multiply that by your wattage the speaker can handle (this information will be displayed on the speaker itself or the box it comes in) then take the square root of it all, this allows you to find your total gain control, assuming you set the radio at the right controls before tuning the amp
@@brendanreddmann3613 its never to late for information buddy. Stay you and thank you!!!
😂
After setting the gain using the SMD can you please use the Multimeter to see where the voltage is now at?
Can RMS power be calculated using the voltage? (Can you work the voltage at clipping backward to get an RMS value?) Even though an amplifier may be overrated/underrated, will finding the maximum voltage before clipping(using a dd1) be an accurate RMS value? Thanks ✌
hey hey, sweet video!! thank you!!
Thank for the knoweldge
Do you have to measure the voltage open circuit? Or can the speakers be connected while you measure?
So informative!
These kinds of videos would have been great 25 years ago. I mean they are great now, but would have also been great then too. I had no idea what I was doing, lol. Thanks!
I think i can also apply this on my out door equipment.
Hey, what should I have my Amp gain be at if I plan to adjust my lc2i with the accubass? Or how do I adjust the set if I have two gain knobs to use from?
I have a question. When I form the equation do I use the RMS wattage or the max wattage? Also how do I know if I should test at 4 ohms or 2 ohms? Thanks in advance.
Never thought you'd get a content cop on you lol
Thank you very informative and I am going to get one of those for my van
Question: once I set the gain with the head unit bass at 0 and the auxiliary bass knob at max, can i then later turn the head unit bass back up or do I only use the auxiliary knob? Please help
You are amazing thank you. I have a a question i have a capasitor I watched u r video but I dont know how to hook it up to the resister n battery to charge?
My subwoofer guy put paint on top of the gain controls and all that and said he put them exactly where they need to be, so don't touch them and he'll be able to tell if I messed with it because the paint would be cracked on the dials. Loved that guy
Great video I love the attention to detail 👍😃
Hey great video. I just want to make sure I got my numbers and math right, I have a clarion amp 1300 watts and the box says 650 continuous watts @ 2ohms. So my math would be 2 * 650 = 1300, the sq route is 36.055.... is this right?
yup
Love audio control
Very good video, clear, concise and easy to understand
Much respect for this video ... Most people just dont understand
Hello mark, I saw the video and wondered if it is possible to use the clipping indicator present on some amps instead of the DD-1 SMD. Thx 😃🔊
Excellent content! Always a great watch
ive been wondering how to work out voltage output watts and ohms relationship for years. so simple 3:49
Is it the RMS power of amplifier or peak power?
Can it be tune without SDM?
And do you recommend a external crossover
Mark, thanks for the video! Could you please expound on attenuating the warning chimes as mentioned @7:03? Are you just attenuating the front inputs in proportion to the rears? If so, are you summing the FL+RL and the FR+RR? I don't understand how you're attenuating the chimes without affecting the full range of those channels. Thanks!
Nice video!👍🏽
Great one on amplifier tuning!
Sir how do you adjust the subwoofer amp if you have lci2 connected ?
Assuming my head unit doesn’t cause distortion at 3/4 volume would I be sending to much power if say I tune to exact gain at 3/4 then later down the road turn the volume past 3/4 on accident will I cause damage? New to car audio and trying to learn. My amp is fed by 4v pre amps.
Hi, how tuning settings amplifier lpf hpf with components that has their crossover??
This dude is cool and full of life.
Great video. Thanks
Hi
Plz show us how to wire up a 3 way crossover with 2 amps and 2 subs
How do I use the smd dd-1 if I got the audio Control LC7I? Can you make a video how to.
With a quality amp like this would you suggest running a pre amp crossover? Would you get higher quality sound; or are the built in crossovers good enough?
Thankz for this video
WOW great info!
greetings from russia! this is a easiest way to change correct gain on amp without special device what i see! thanks dude!
I have a after market head unit with stick speakers and 4 12’ kicker red lines (I’m 17 with minimal wage leave me alone😂) and I just turned the bass down all the way on my head unit so my speakers can play as loud as possible with no distortion and let the subs do the lows :)
Xxx tentacion that’s what i do lol
AWESOME DETAILED VIDEO... MUCH APPRECIATED...
Why are you yelling?
LOL...
your frame changed as you did the gain lvl with the dd1 on the amp. is it super low or close to the original gain with the multimeter??