SETTING GAINS ON AMPLIFIER

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Setting Gains on Amp
How to Set Gains
How to tune amplifier
where to set gains
setting volume on amp
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[@johnsteger]

Keep the DD1 hooked up and go to SLA usb1 or usb2 or aux plus 3 and it's still clean signal ....and if your using the usb1 or usb2 or aux don't use the CD to set gains use the sorce you use the most to set the gains

[@JacobViral2]

Meter I use: amzn.to/3co0YBe & amzn.to/3qOBF0x THANKS FOR WATCHING and SUBSCRIBING! MORE VIDEOS TO COME!

[@SilentShadow-ss5xp]

Just wanted to add this here for anyone who reads this comment but you should keep your crossovers off when setting gain. You want the cleanest and loudest output signal when setting gains. You should adjust your crossover after you set your gains not before.

[@user-nu4lc4gl7x]

What is crossover and what are the gains

[@CurtF94]

What is crossover off bro,all the way up or all the way down

[@CurtF94]

Low pass up and high pass down?

[@holdDeez1993]

The only question i have about this is u can have the subs wired to 1 ohm and know what your amp puts out at 1 ohm so u can set the gain to the voltage for the correct wattage but what happens when its set for that wattage and u have box rise?? Doea it cause clipping?

[@jamesg8246]

If you use an oscilloscope and take the reading with the sub connected that will account for impedence rise. Highly recommend doing this somewhere away from people, neighborhood, etc... Lol

[@fredbradshaw3835]

Phrase of the day and jacob's famous words. It's not pretty but it works💩 lol.

[@joecool7165]

Oscilloscope is what all of us old-school people use. It is the best way to go bar none

[@MikeMcChiken]

I'm old school too and just used the dummy lights in the days . I've always wondered why people get so anal on this . We set everything flat then override it all with line drivers . To top that off today's music is so screwed up and recorded at different levels . My slash says to set the output to 32 volts for 2 ohms 12 inch . Once I juice up some 60hz on my eq I'm no longer at that voltage.

[@IndAudio]

Please explain types of wall build and advantage like b pillar c pillar d pillar etc....

[@Mr2SMOOTH24]

Nice tutorial Jacob 👍👍

[@imaybtheanswer5764]

Im a bit confused, not sure if in order but the last vid i watched was a "Subsonic" vid of yours and you said leaving it "off" or all the way down was more damaging to your amp bcuz it puts out more power than needed...Im a noob at all this tho, bangin on a budget 2-12" svc 1300w subs just rewired parallel to a mono i just bought, since i burned out my other amp-took years tho...im here to learn how to set controls, thanks for putting in your time...

[@matthewderry1728]

I've actually set my gains by multimeter, but you have to know your subwoofers watts RMS also max wattage, I have 4 DB drive G5s and 2 taramp HD 3000K on 2 of each they are 1500 watt RMS peice, so your gains need to match your wattage and voltage of head unit some amps don't like being above 2 volts, some amps have different ways they output voltage aswell.

[@jRomero713]

Could you help me figure out the proper voltage for mine. I have three 800 watts RMS DVC 2 ohm subs and a 4900.1 RMS amp.

[@longrifle325]

@@jRomero713be careful when setting up amp with just a multimeter, it doesn’t account for the distortion or clipping. Invest in a cheap Liumy Oscope or DD1. ohms law for Voltage = square root of watts x ohms. For example, a 500W RMS amplifier at 2 Ohms would configure like this: 500W RMS X 2 Ohms = 1000W. Now take the square root of 1000W and your voltage should be 31.62V. How do you have your subs wired up at the amp in ohms? 0.3 , 1.33, 3 or 12 ohm? Just multiply 2,400 (watts rms) by your ohm load at the amp and find the square root of that to find AC voltage. Example: Voltage would be 55.85 if you have subs at 1.3 ohms. 2400x1.3=3120 Square root of 3200 = 55.85 There are a lot of KZbin videos of how to do this bro. Good luck! help.skaraudio.com/article/lx5b6thibo-dual-voice-coil-subwoofer-wiring-guides deafbonce.com/media/subwoofers/apocalypse-db-4515-d1-d2/manual_kj7gNHl.pdf m.kzbin.info/www/bejne/g3PGeIKlh69niNE m.kzbin.info/www/bejne/g5ulk6uYnduAqcU

[@superchile9640]

Why have the low pass at "half"? You can run a test tone and set it prior to setting the gain or even after

[@jamesg8246]

The correct way to do this as far as the voltage is to take power target in watts, multiply by resistance (ohm load presented by amplifier) and then calculate the square root of that figure. That will tell you what target voltage you want to see at the amp outputs. Example: So my system has a single 2ohm dvc sub wired in parallel that presents roughly a 1ohm load to the amp. That's my resistance. I want to target 500 rms watts of power from my amp because my sub has a 400-600w RMS rating. So I take 500 X 1 = 500. Then the square root of 500 is 22.3. So if I set my head unit at the maximum volume level I will play at without clipping, max out bass knob, and set eq where I will use it(not flat, set it where it sounds good to you), connect multimeter the way you did. I would set gain until I see 22.3 volts AC. All of that assumes you know at what volume your head unit clips and also assumes that at 500w output your amp doesn't clip. You can use a $35 Amazon oscilloscope to see that very accurately instead of using a $200 single use tool.

[@EZCustomzz]

That’s how I do it. I also own a DD-1 and will just use that if the RMS of the subs match exactly to the RMS @ impedance of the amps total output. Easiest way to turn the Gain up to max right before clipping to ensure I’m getting the max out of the amp and for the subs

[@kristicarhomeaudiosystem47]

What is best for a simple Subwoofer 80hz or 100hz? and which is strong bass 80hz or 100hz?

[@JacobViral2]

Subwoofers are usually more around the 30-50hz range not 80-100

[@kristicarhomeaudiosystem47]

@@JacobViral2 Ok thanks bro 👍

[@ROBBG88]

Then why do you put yours on 80hz man u so confused me on this video cause on another video u made u said set all settings before gain and then u have this video saying set subwoofer to +6 and sub sonic off I'm just confused

[@davidandlaurie1]

Sorry to ask this question. But is there a way to check my voltage to my amp I'm new at all this. So I'm learning as I go you had grate tip and video s ty

[@JacobViral2]

Multimeter and check voltage with the poss and neg probes

[@davidandlaurie1]

@@JacobViral2 ty for ur time

[@davidcoombs1874]

I bought 2, 3000w max scar audio 15’’ ZVX v2 subs at 1ohm each. I paired that with a SKv2 4500w mono block amp. Any suggestions on tuning? I just like the feeling of bass, I want them to kick as hard as possible without burning out the voice coils. Every time I have it set where I like it, not even a minute into a song the amp puts itself into “protect” mode and turns off. I assume its trying to stop it from frying itself but my last sub was way louder and cheaper than this set up… any suggestions at all would be helpful. It’s in a 2017 Prius prime, it has a generator not an alternator so upgrading alternator isn’t possible. I don’t think its a power issue, I have a 5000w capacitor my voltage is fine. It’s a parallel set up. I blew up my last set on purpose when the new stuff came in, bad idea cause that smell is still in the box and I cant help but think I’m ruining my new coils. Thanks.

[@JacobViral2]

I would go with 32-35hz range but depends on music preference. Give it time for them to breakin also. Make sure you aren’t clipping and monitor voltage. Also remember box size could affect output.

[@braddunn5983]

You are probably pulling main battery voltage down below where it needs to be. You can check this with volt meter or some cars have the actually volts on the dash see how low its pulling the battery down when it hits. I'm guessing if you have it wired to 1 or 2 ohm and it is pulling battery down that much you could either have to add additional batteries or rewire system to run at 4 ohm to bring the load down so it will run continuous, but first is find out if it's a voltage problem.

[@shaneO12314]

Thank u bro,i love sound systems

[@JacobViral2]

Your welcome 🔊👍

[@zrafferty]

Dd1 is dead on with proper use and good battery smd did video confirm and I have tested it myself

[@jamesrose298]

When doing this do you turn the bass knob all the way up or down??

[@JacobViral2]

I always have Bass knob always up max

[@Bighotwheelhunter]

It's confusing because on the instructions it sat half

[@JorgePerez-ts9su]

I really lile how yo explain everything on the videos but can you make a video explaining out set gains properly on a 4 channel amp??

[@JacobViral2]

Will do sometime soon 👍

[@JorgePerez-ts9su]

It would be great have dd1 to do gains 2 but want to know little more on hpf and all that

[@dunnbizzy79]

Always put your radio gains up so you know you won't hurt anything when you get that wild hair sometimes.

[@jamesg8246]

Nice video. Yes, an oscilloscope gives you more flexibility and accuracy for $35 than a $200 SMD meter. My understanding is his meter is also made to only be used with the test tones provided with it. So that's a further limitation.

[@onewheelup]

your right,and what about when the voltage drops,doesnt it change everything ? whats a budget oscilloscope on amazon i could buy James,ive never used one.could you post a link of one thats easy to understand how to use for us.thanks man

[@onewheelup]

so if you use the dd1 with car turned on and set it,then what happens when you put a load on it and voltage drops,will it still be a clean tune ? anyone ? i heard it changes,any help guys.

[@JacobViral2]

It would actually drastically change it going from 14v to say 12v which can lead to an even different gain setting.

[@xsmatt81]

i use a DD1 and my hears and check voltages with a dmm just out of curious from time to time. anyway, should set gains with dd1 with engine running. (thought some say off), because when off like he said V will drop to HU>RCAs > to amp, not a ton from the RCAs, but enough to cause clipping if you play the radio loud with engine off. If you are going to jam some music with car off, just turn the volume down a bit..don't go to max vol you set gains at with motor off. i dont anyway because just one AGM battery, but parked and engine running jam away loud

[@kartooni]

Thats cool but when your speakers are plug in the voltage move so the gain can be différent.

[@JacobViral2]

correct, you can't keep gain proper anywhere as different songs, different db levels, different frequencies, box rise, voltage adjustment, etc. It's never ending lol

[@Countypigfive-oh]

Volts = Square root of Watts*Ohm. For example my RF 1500BDCP at 2 ohms would be 1500*2=3000.... Sq root of 3000 = 54.77 = Max volts from the amp. Now lets say I have 4 DD Audio 608 at 300rms each 300rms*2ohm= 1200rms. Sq Root of 1200rms is 34.6 volts. That would be how to calculate voltage to your specific set of speakers however many there are and max voltage of your amp.

[@RedCdot]

What?

[@25hztolife86]

My experience..... it's better to turn everything on except bass and loudness plus the EQ. Then adjust the gain of the amp. My gain is barely turned on but I have the most out of it.

[@bass-n-truth-inthestix9083]

I like to set my gain with all my settings how I plan to run my system and usually on my head unit my bass is set at -5 but for amp gain setting I set bass @ 0. So I'll have some head room. I also use a dd-1. Also with my eq and audio control epic160 being the source going to my amp, my output voltage is like 7 volts out so my gain is barely turned up as well.

[@holdDeez1993]

What about sub level on the kenwood decks?? If im using full volume then i should leave the sub lvl on 0 right?

[@swiftxb]

@@bass-n-truth-inthestix9083 Ive never understood why people set their radio on flat eq and set the amp gain then???

[@bass-n-truth-inthestix9083]

@@swiftxb it's just a good starting point and honestly the only true way is the human ear. You have your starting point and then after that, it's on you to pick up on distortion or clipping and adjust accordingly.

[@bass-n-truth-inthestix9083]

@@swiftxb I mean as far as changing settings after setting your gain with everything flat.

[@user-nu4lc4gl7x]

I want to ask my mono is xtc blitz 15000 watts and it has a button for sub sonic just to push down and up were must i put that up or shuld be press down and phase also has the same kind of buttong

[@JacobViral2]

Try both and see what works better for you.

[@joshjohnson2995]

Does gain setting change if I have 2 amps strapped as master and slave ?

[@JacobViral2]

No same concept just use both amps as if it’s one tuning gain on master

[@joshjohnson2995]

When setting gains with the multi meter do you have the radio all the way up or 3/4 volume. And how about the bass knob ?

[@JacobViral2]

Knob all the way up and radio to a healthy max limit you prefer non clipped.

[@jefftaylor4997]

My output lowers when i turn my subsonic up, what gives?

[@JacobViral2]

Because subsonic. It filters your bass the more you turn it up depending on the frequency you play.

[@jamesg8246]

A subsonic filter is just a high pass filter that you set to prevent frequencies below the set point from being amplified. So if you set your subsonic filter to 20hz it will reduce power to create a (usually a steep) 24db slope starting at 20hz. The amp isn't using as much power below 20hz so the gain could be set higher. But you don't want to set gains using sub 20hz frequencies in 99% of use cases.

[@steves313]

why set vol not max but on 56 if you wanna prevent it from clipping on max vol. lets say you r playing your loudest song and someone max your volume will that not damage your amplifier or speakers. my xp on brazilian amplifier is that they clip very fast if you set you gain like that

[@iiSup3rior]

You could set your volume to max then use the dd1 to change eq settings til the light turns off. Then that way if someone uses your car they can go up full volume and they won't clip nothing. This guy didn't go full detail on the dd1

[@Nissanalltheway]

Your biggest fan thanks for the videos

[@seanb7969]

My DC audio amp showed clipping on the bass knob before the SMD tool. I went with bass knob clip indicator instead but should I be worried that there is something wrong with my tool the tool has a new battery.

[@JacobViral2]

Usually their all very close. Sometimes the bass knobs could be slightly off but always a safe side. At that point it’s by ear after tuning to confirm as nothing’s 100% perfect and certain frequencies and songs change and vary.

[@deedolan399]

Question for you Jake, just want to make sure I completely understand. Would you say that when setting the gain that you should have every head unit setting on 0(flat) and the LPF on the amp at our preference and the subsonic filter set cutting out bass below a certain frequency? Or should we set our head unit to what we like our music to sound like and set the gain with the subsonic filter wide open? Just want to make sure I get maximum safe performance.

[@JacobViral2]

I would always set everything personally the way you like it then do gains last. The reason is that if you change subsonic, LPF, HU Settings, equalized, etc it’ll affect gain so if you did all that first then gain it’s good: that’s why I always just keep everything flat and tune.

[@deedolan399]

@@JacobViral2 thanks Jake. Great help

[@mannycruz9917]

So if I want to tune the gains on my car I only have a subwoofer and sub amp I unplug my sub woofer and mute all the door speakers ? How does it get the test tone ?

[@JacobViral2]

Tune one amp at a time correct. It’s safest. Test tones from apps or kzbin.info/aero/PLkYp1Fj-99b2idXulV19eVzlIiPcXR2CD for tones also.

[@prajwalsingh9045]

Love from india 🇮🇳 😇

[@docgray5004]

Jacob Viral2...Can you point my anywhere to get the cable connectors that are connected at the amp? This would help me clean up my install.

[@JacobViral2]

Car Audio sites or Amazon sells them or screw machine shops. Their called dual 0 gauge amp inputs for power and wire. Also have them for speaker wires at I think 4-8 gauge.

[@superior3384]

I don't understand gains sometimes. If the amplifier says it has 2000 watts and my gain setting is at half does that mean I'm getting 1000 watts out of it?

[@JacobViral2]

Gain isn’t a volume knob which in most amp cases your support to align your gain with the preout voltage of rcas from the head unit.

[@superior3384]

@@JacobViral2 .. ok I get that. Dude I've been watching your tuning videos like 20 times each. I'm trying to understand everything. Can you make more videos on tuning . I want to learn more

[@jimbossemi-customs3129]

When I use my DMM to set my gains to the desired voltage my DMM jumps around everywhere. I have a good Fluke meter so I know that's not the issue. Any help would be very welcomed. Thank you in advance.

[@JacobViral2]

Make sure you have a constant frequency that is not bouncing around different dB values so it won't give you a jump in variables maybe?

[@jimbossemi-customs3129]

@@JacobViral2 I will check that out, thank you!

[@ROBBG88]

I'm so confused like fr you have 1 video saying do lpf subsonic before gain then now u say +6 up on subwoofer then set gain and have subsonic off I'm just confused I thought its 80 to 100 for 12 inch subs on lpf and subsonic is wat your box is tuned too then set gain but leave subwoofer level to 0 on hu

[@JacobViral2]

I’ve testing a lot of different ways honestly all turned out the same as long as the gain was re adjusted after all initial tweaks.

[@cn001252]

Hey I have my sub wired @ 2ohms and my amp puts out 1200w @2 ohms so I do 1200x2=2400 then square root is 48.9. After I set my gain do I tune the other filters or will is effect my voltage

[@JacobViral2]

Always set gains last I suggest after other settings

[@jamesg8246]

You need to find out two things first with an oscilloscope. At what volume does your head unit clip and at what gain level does your amp clip. These measurements should be taken with all head unit settings like eq, loudness, etc... set the way you listen to it and if you have a bass knob it needs to be all the way up. If you set eq flat, and have everything off or knob turned down and tune the amp that way as soon as you raise the eq to sound good or turn on loudness or turn up knob you'll be straight into clipping.

[@ronniescaplen6604]

Hey Jacob, whats ur bass knob set at when doing gain setting

[@grissom.]

ur gonna want to put it all the way up

[@californiajack1244]

Good video, did you find out what your AC voltage was coming out of the RCAs? Probably around 3-5 volts? Yes also SLA with usb or Bluetooth gives you max voltage without clipping. Saw a few videos of that as well as scoped it

[@californiajack1244]

Around 4 or 5 volts clean on preout with sla 3

[@certisteppa136]

Just wanna make sure I’m doing this right I have 2 subwoofers 300 watts each side so total 600 watts and I’m doing 2 ohms so would I do 300 x 2 or 600 x 2

[@JacobViral2]

So your subs are rated for 300 wattts, or 600 watts for both correct. The Amplifier has to be rated for the ohm you run at of what you want, in this case 2 ohms at 600 watts your going for?

[@certisteppa136]

@@JacobViral2 well first lemme ask you a question so if I have a monoblock amp and svc 4 ohm subs does the monoblock amp make my 4 ohm subs a 2 ohm when I plug it in?

[@certisteppa136]

@@JacobViral2 sorry new to all the audio lmao

[@JacobViral2]

@@certisteppa136 SCV=Single Voice Coil, so it will be 4 ohm at the amplifier, NOT 2 ohm. If it was DVC=Dual Voice Coils then it would be 2 ohm if wired properly.

[@certisteppa136]

@@JacobViral2 doesn’t monoblock make my amp 2 ohms

[@dylanboldt1368]

Do I need to disconnect my door speakers to set the gain

[@JacobViral2]

I would for a 2/4 channel amp

[@xDarkness_1223x]

DO YOU DO THIS WHILE PLAYING THE MUSIC OR HAVE IT OFF?

[@JacobViral2]

I use test tone frequencies as shown in video ;)

[@isaacmack1316]

What if I am useing stock head unit and dont have those kinds of options

[@JacobViral2]

Go by ear search KZbin videos it shows how.

[@benjaminsuciu988]

My dd1 doesn’t detect any distortion in my amp or my headunit is this normal ?

[@JacobViral2]

If using correctly there is always a point it should. Test all knobs up and bass boost on. If no triggers from the dd1 it may be a problem with the device or music testing from.

[@joecool7165]

What about your base now buddy

[@anthonygutierrez8053]

What happened to this sound qubed amp? i noticed in your newer videos your using a bc6k. @jacob VIral2 Their amps look a lot like the new D4s jp23 amp.

[@JacobViral2]

Sold it to a local friend and upgraded when I went from a 10 to a Fi 12

[@anthonygutierrez8053]

@@JacobViral2 How did that sound qubed amp do for you? What was your honest opinion of it?

[@JacobViral2]

@@anthonygutierrez8053 I’ve ran the soundqubed 2200 and 4500s multiple times and always loved them. I usually ran then at half ohm and had decent voltage to keep up on 12v. Great heat sink and clean signal that does rated power when I clamped them.

[@anthonygutierrez8053]

@@JacobViral2 Hell ya, thats good to hear, im thinking about the 2250 so i can do a single fi x15 at 2 ohm and two fi x15's at 1 ohm when i upgrade. Thanks for getting back to me, have a great day!

[@bass-n-truth-inthestix9083]

Why is there speaker wire in your remote place?

[@clinthernandez9393]

He's probably turning on another component but ran out of remote wire

[@JacobViral2]

Jump to my 4 channel amp for turn on REM wire.

[@bass-n-truth-inthestix9083]

@@JacobViral2 gotcha I was like wtf? So you just didn't have more remote wire so you used w.e.? I definitely have some stuff like that going on with my build too.

[@pene7601]

How do u check when your radio clips?

[@JacobViral2]

With a device like this dd1 amzn.to/3lshHIR

[@bassbrother101]

No load sub not connected

[@jasonyoung1608]

Watch the hold video I’m still dumbed

[@DibeezyTheGifted]

I'd put a new 9v in the DD-1 personally. Great content Jacob

[@JacobViral2]

Thanks good idea

[@bassboostedxb2452]

Just got the combo smd and used your code saved me $15 not bad 🤭👍🏼🔊

[@JacobViral2]

Very nice which site did you buy from? Enjoy the savings in the future as well!

[@bassboostedxb2452]

@@JacobViral2 sky high car audio

[@classicfitness8478]

Is this car in running condition? Or just demo ?

[@JacobViral2]

Both :)

[@classicfitness8478]

@@JacobViral2 👍🏻😅

[@user-to7xi2gh4i]

Is this a flinstone car lol jk

[@Catholic1391]

One question the gain you set, is that good for 1 ohm and 2 ohm? Cause I went from 0.5 ohm to 2 ohm. I can't do 1 ohm with both my subwoofers.

[@Catholic1391]

@@mitchellfontaine7302 I have the Orion HCCA 3000.1splx for me to do 1 ohm I need two of those amp it's to expensive. Also I have the SMD 1 to set gain I was just wondering if 1 ohm subwoofer and 2 ohm subwoofer gain is the same?

[@Catholic1391]

@@mitchellfontaine7302 Both my subwoofers is the Skar ZVX v2 d2 12

[@Catholic1391]

@@mitchellfontaine7302 ok will try that thank

[@Catholic1391]

@@mitchellfontaine7302 cool👍

[@Catholic1391]

@@mitchellfontaine7302 I have one more question, I have a pioneer when I use the SMD it show clip at volume 39 at 40 hz with the CD that came with the SMD on the head unit. Volume from 0 to 40, so 3/4 would be at 35?

[@RyanBassForLife]

Nice

[@AstroTundraBASS]

NO LOAD. Sub is NOT hooked up

[@RubenMartinezJr1805]

Hey Do You Use The BassBoost On The Amp?.

[@JacobViral2]

Never

[@RubenMartinezJr1805]

Jacob Viral2 Much Appreciated. Gonna tune my gain and lpf for my system tomorrow, Got a 10” XR American Bass @1000RMS@2ohms and a JL Audio JX 1000/1D AMP 1000RMS@2ohms. 🙏🏽🤞🏾 hope this shit bangzzzz, Thanks again.

[@RubenMartinezJr1805]

Jacob Viral2 on your headunit do you turn on the loudness and sub level ??. Thanks for the help

[@JacobViral2]

Ruben Martinez Jr loudness off and subwoofer level usually either max or flat depending on the unit. I made a video on settings not long ago here actually.

[@RubenMartinezJr1805]

Jacob Viral2 appreciate all the help!.

[@rmblwgn]

Why in the world do you have an 8 gauge turn on wire lol... Remote draws like 2 milliamps..18 gauge is plenty big

[@JacobViral2]

It was ran when I had a relay and four big amps before with my old system so I just kept with it.

[@rmblwgn]

@@JacobViral2 right on. I'm just skeptical because I see so many people using 8 awg speaker wire with 1000w rms amps and it makes me facepalm.

[@iiSup3rior]

@@rmblwgn going big isn't always a bad thing. It's actually better to go big. Saves you running cables and they will last longer since the signal won't deteriorate the wires as quick especially when running ofc wire

[@rmblwgn]

@@iiSup3rior a few milliamps won't degrade even 18 gauge ofc wire

[@iiSup3rior]

@@rmblwgn well look at your internet cable. That shit requires an upgrade at least every 5 years. And it's what like 16 for that little line.

[@technicallyeco.2751]

Ha dd1 like 400

[@volleyballjerry]

stupid headcam

[@joecool7165]

Oscilloscope is what all of us old-school people use. It is the best way to go bar none