Test your amplifier

[modemseb18]

please title music in 49 second please

[muscleammo]

of all the times ive asked ppl how to find my actual output of my amp holy shit was this simple thanks brotha

[supaking20]

What's the name of the song he played?

[calvinblinkee]

@StillWhippinBabies Yea I think you're right. I BELIEVE this 'peak' is different from the advertising type of peak. This peak is like the peak RMS you were able to get out of the amplifier during the song.

[chunnygoat]

nerds! V=I*R

[BROOKLYNBEAST226]

Is the sub dual or singe?

[BROOKLYNBEAST226]

I always thought a clamp was needed to do this procedure. Is the sub a dual or a single terminal. The reason why i asked that question because if it is a single terminal sub then how would you determine the results for a dual terminal sub?

[SonyXplods21]

@StillWhippinBabies even a faster way is jst add a zero to the fusing and get rms. so if your amp has 2 X 30amp fusing. then your getting around 600rms. dependin on the amplifier class, such as ab,bd,d class and so on

[calvinblinkee]

@SonyXplods21 Yea I use fuse ratings to determine roughly whether the amplifier will do rated power or not. But this method works if you know if the amplifier has a regulated or unregulated power supply and what not afaik.

[CH3353BALLz]

tht iphone has a ton of cracks!

[CronicBombs420420]

wow this help me understand gain setting videos to...so if i a momo 400 watt 1channel bass amp 4 ohms hooked up to a 800w 4 ohm sub and with my gains all set my voltage is 40...so i should be getting my max 400watts?

[TheClown316]

‎4, 4ohm DVC subs each pair wired at 2 ohms each pair going to one mono block amp so 4 subs and 2 amps now do i plug in for the ohm for 4 or 2 ohm since that is what they are wired at

[streetpirkkala]

so 44.9^2/ohm=peak and 44.9^2/ohm /2=rms?

[mcf3778]

I wish I knew this when I had my 4 punch dvc 12's and 2 punch 800.2's running 2ohm stereo... I will be testing this out with my current dual kicker comp 12 setup once the amp arrives!

[bayarearacing408]

wats up with the smart asses that trys to prove this guy wrong..?? hes only showing peeps how to measure what you "might be getting" out of your amp listing to your beats.

consumers dont give a damn about numbers at 50hz! they just want numbers when they are bumping down 11th street.

great vid!

[tacomabanga1986]

i put a dmm on my home stereo but i briged it to the meter, had the left pos going to the pos lead, and the right neg going to the neg lead and i got 64.2vac out of it but i had no ohm load on the radio at the time so how will i tell what it is? the woofers that came with it are 6ohm so would i just devide that by 6?

[perro123123]

hey im buying a amp tomorrow how can i test the amp if i have no cables only a head unit to see if it works? thanks for any input

[00stangmang]

Seriously?.... TMA in a Focal display?.... c'mon now. That just ain't right.

[DrBassTasty]

the name of the song that boms XD

[mrb00sted]

even though i have never seen it done this way, the biggest down fall is.. a "2ohm" sub with never hold 2ohm. they rise once it begins to play music. imo, the only currect way to find true power is to find ac volt of the output and put a clamp meter on the (+) going to the sub woofer. then basic math.

AC VOLTS X AMPS = Power

[SonyXplods21]

you can also take the amp fuses X the Voltage = Max Power!! Divide by 2 and you get Rms! Way Faster Than Yours. Nice Vid Tho

[soundmancaraudio]

@SonyXplods21 yes but the purpose of actually testing your amp is to see if its putting out the amount of power it's supposed to. for diagnosing problems. so if it sounds like your bass should be louder you can test the amp to see if its a power issue or a woofer/ box issue. or a voltage issue.

[R32Viper]

@soundmancaraudio what do you guys use to fix headlight dimming problems when u guys turn the subwoofer at max?

[7E0N]

@R32Viper Extra battery and maybe a higher output alternator if it calls for it

[mrb00sted]

@SonyXplods21

if this was true. Pyle would be one of the biggest amp companys off all time.. i could put 3 million 40amp fuses in a amp. dont mean its gonna do that power.

[PSPHaCkErAOD]

wats the name of the song in the begining of this

[mrb00sted]

i have always done, read ac on the amp and use a clamp on the woofer.

ac volts x ac amps = power

[maheinicke]

@mrb00sted

same here

[dnwndls]

Can you do this without the subs wired in????

[lotsawatts]

To say that the RMS power is roughly half the Peak is not a very accurate statement. A better way of measuring would be to use a true RMS meter to read the RMS voltage and then use the formula. The most accurate would be to use the RMS meter with test tones.

The impedance of the subs change as frequency changes. If you use a standard voltmeter you are measuring the DC resistance, not impedance.

[soundmancaraudio]

@lotsawatts true, I just made this video for people that need to diagnose output problems, and ever shop has a multi meter, true that the rms is an estimate, but this is a very accurate way of testing Max output in a real world situation. thats why we would use the customers music and use the formula.. that way we can see how much power he's getting with his music. if the guys JL audio 1000/1 is measuring 1000 watts we would know the amp is putting out the right amount of power.

[bullet4mv93]

Wait so I have that exact same amp and it's running at 1 ohm powering 2 JBL p1224's...so does that mean the total power output is (roughly) 2016w, the RMS is about 1008, and since it's going to two channels i'm giving my subs about 504w each?

[DJRockinRob]

ok ... i accept your equation but i have a couple of questions. 1.) if you have 2 speakers on the same channel what would the ohms be? (example - 2 speakers 8 ohms each.) i have been told that each speaker added divides the ohms by half so ... (2) 8 ohms speakers would be opperating at 4 ohms - right or wrong? question 2.) what is RMS?

Thanks for the vids!

[soundmancaraudio]

1. correct two 8 ohm speakers wired parallel equals a 4 ohm load.

if you're bridging a two channel amp the impedance divides again. example: a 4 ohm load would drop to 2 ohms when bridging a two channel amp.

2. RMS stands for "root mean square" which is a fancy way of saying "continuous power output".

[DJRockinRob]

Thank you! Thats what I needed

[calvinblinkee]

It's best to use the multimeter to measure the impedance of your sub to get a more accurate reading. My subs are DVC 2 ohms so I wired them in series/parallel to get a final of 2 ohms. But it turns out to be 2.1. The .1 actually makes quite a big difference.

[calvinblinkee]

Why not try a 50hz test tone?

[soundmancaraudio]

because the goal is to see how much power you're getting when listening to "your" music.

[basshead30]

@soundmancaraudio I agree with soundman there is a big difference in rap compared to blue grass music lol say 1000 watts playing with blue grass will sound more like 600 watts but with rap techno R&B u would seem that the amp would come to life seeing full power by metering with music u know more what u will be looking for how many watts for the sound and feeling ur looking for as a daily driver .

[basshead30]

@soundmancaraudio what ppl realy have to learn is there is always a good better best way to do things but the veterans know whats the best for what ur looking for in each application not the best over all . IF U WANT TO KNOW WHAT A AMP DOES TONE TOO TONE PEEK OUT READ THE BOX IT CAME IN. .... IF U WANT TO KNOW WHAT THE AMP WILL DO FOR U IN UR CAR ALL DAY EVERY DAY U WOULD TEST IT THIS WAY WITH UR OWN MUSIC . GREAT JOB U ARE DOING SOUND MEN LOL VARY FUNNY AND INNOVATIVE SHOW.:)

[joseeeeesss]

name music 0:56?

[calvinblinkee]

Is this an accurate way to measure the wattage?

[mporettim]

I've noticed that when I measure the impedence of my subs it isn't what it should be. It's annoying

[chevyman217]

Thanks man very informative!!!

5*****

[TheEvilOne343]

why not just take the volts * the amps? that will give you your wattage.

and typically if the amp says you can only do 500 watts that 500 watts at <1% THD so if you go above that youll clipp your signal.

also you should do a vid about how to set the gains properly with this methode. because you typicaly dont just randomly set the gain and boost then check what your doing. i use a DMM and set it to about 10% less than the rated rms so i dont get a distorted signal.

[soundmancaraudio]

this video is how to check the power output of your amp after its installed and adjusted. assuming you know how to set your gain. this test gives you actual real wattage. but i will post a video about how to set your gain properly. thats a good idea. thanks.

[BIGGIEDEVIL]

man i just did this with my Alpine MRP-M500 and i got 54.7volts!! that's like 748RMS!! when it's clearly says 500rms on the box

[soundmancaraudio]

do you have a 4 ohm sub? if so the 748 would be max power. rms should be about half that. 374 watts rms

[BIGGIEDEVIL]

it's a dual 4 ohms wired for 2 ohms

[soundmancaraudio]

that thing puttin out some power... you got a lucky amp.

[BIGGIEDEVIL]

what do you mean lucky?

[BIGGIEDEVIL]

check out my lastest vid i'm metering it live on the vid

[soundmancaraudio]

You gotta test the amp with the subs hooked up, because the A/C voltage will change from the resistance of the woofer.

[EXOcontralto]

Thanks a lot my man! Great video!!!

[brod1077]

hu hu.. you said "Put yer meat... er......"

[johnsonwacker]

Dude!!!! thanks. this video helps allot. i work at a shop, and this idea helps a lot to show customers why there subs aint bumpin.