When you're talking about the frequency it would be good to say I have this test tone playing on the radio

@mikez4719

7 ай бұрын

Whatever frequency you're tuning to is the test tone frequency you play.

This saves people a lot of money from buying expensive tools they don’t need THANKS EMF FOR BEING HONEST AND NOT TAKING PEOPLES MONEY WITH GIMMICK EQUIPMENT.

Can you do more videos on amp tuning. I really am having a hard time wrapping my head around it

@mopar392ta3

5 жыл бұрын

Venom Vaping he is playing a test tone or sine wave for each specific frequency once you turn the knob to that frequency it starts to drop when you have passed the frequency of the test tone he is playing

@angsieverz4938

4 жыл бұрын

If you have an spl meter, it is quicker to "see" the peak of that frequency, when you have hit the target, while varying the knob. A fullrNge freq is needed though

@heatherwalker7230

4 жыл бұрын

On your head unit you have to play a test tone I would do it without the speakers hooked up turn the volume to wear you usually playing your music halfway whatever for example it'll say 12.2 volts move the knob until it starts to move up or down 12.1 or 12.3 and then go back to right before it starts to move and stop and whatever tone you're playing on your radio is what it set at but you need to set it to whatever your speaker box is set to so if your speaker box is set to 35 you need to play a 35 hz song don't know if that helps the hope it does good luck

@samrohde8279

3 жыл бұрын

Hello! I appreciate all your videos but I admit I'm not the best at understanding this stuff. I have a system I just put in on my Harley and I have a few questions I need help with. Is there anyway to contact u? I would appreciate it. Ty

@richardgarcia9356

3 жыл бұрын

Does car have to be started. Or just turn key on,does it matter?

Excellent information! Bravo man, this will help me immensely.

Awesome little trick! Left a like. Keep it up brotha!

By far the simplest explanation of how to do this! Thanks a lot!

Thank you for telling us about this it help me alot

Thank you so much

Awesome video brother

VERY GOOD VIDEO?? what happened to the" gain function? could you set the volume with the speakers' connected t-then disconnect the speakers and continue with the adjustments?? thank you , PJP

Thank you going to tune my amp today.

@AB-80X

5 жыл бұрын

Please don't use this method. You'll run the risk of hurting your system.

Very informative info on how to properly set up an amp’s frequencies with only a multimeter! Thanks for the content!

Thanks for the info

Great video

Just watched & going to use what I learned, right now.

@jacemelridge6595

3 жыл бұрын

@@bbfoto7248 Using this method worked fine.. Using a DMM to set pass/cut frequencies on the filters is no more dangerous than setting them by other methods.

@jacemelridge6595

3 жыл бұрын

@@bbfoto7248I wanted to say thanks for your response, and I did end up reading The comments and know about the "slope" in filters. There was no mid-range not teeters involved on my end. I was setting the subsonic and low pass filters on a mono amp for a single sub. Your response made me look into what you were saying. Thanks again.

Man that's great video. It's something I used to do all time. A great video would be showing how to get close the Dmm to your rms in order to avoid clipping. I know I know it's old school and it leaves power left on the table but it would be great to show how you can have more powerful amp and keep the wattage turn down in order to keep your sub saved from clipping. Also most guys don't have an oscilloscope. And they're already buying an amp so they might as well buy a bigger one and not use it fully

@EMFAudio

5 жыл бұрын

So you mean more setting for power, not setting for maximizing potential?

@carpetcleaningprofessor

5 жыл бұрын

@@EMFAudio yes setting for your power for example you have a 2000 watt rms amp powering a 400 watt rms sub your maximizing your subs output not your amps

@EMFAudio

5 жыл бұрын

That would be a little extra complicated on showing the proper way to do it but it can be done, I'll add it to the list.

@pierregervais1567

5 жыл бұрын

For the amateurs that have an O scope, wouldnt it be better to underpower your subs and set amp gain to clipping?

@pierregervais1567

5 жыл бұрын

i.e.: 500 wrms amp for 2 x 300 wrms subs...or something close to that. No cheater amps!

I have 4 channels Sony amp 1200w, 2 speakers 120w rms (each) and 1 sub 380w rms.. How to tune the right voltage with multimeter please!

MAN... That is something really valuable.. I am surprised.. Thanks so much for that

@AB-80X

5 жыл бұрын

Trust me, it's not. Depending on your type of filter, you could be off by as much as a factor of 10.

I'm trying to learn how to set crossovers and this video came about so what volume headunit has to be on and how do you know frequencies put it on

For people that are just learning it would be nice to know where the wires are hooked from the digital multimeter. Also some people don't know what a DMM is. Or when you say the head unit is being set to this Hz so that Hz. What does that mean? I would assume you mean in the settings on the head unit. Many people no nothing about this. Thanks 😊

@dustinbrunolli426

3 жыл бұрын

DMM stands for digital multimeter, and the negative and positive wires go in to the negative and positive outputs on the amplifier, were the speaker wires would go.

@Josefsson9013

3 жыл бұрын

@@dustinbrunolli426 Thanks i'm very new to this, and i was wondering where to hook up the multimeter. But this stuff is still very confusing haha

@jomin1016

29 күн бұрын

He shows where the multimeter is hooked up to the amp @about 30 seconds in. Maybe rewatch the video. DMM=Digital Multimeter

Depending on slope of crossover you have to calculate voltage that you are looking for. If you set -3dB crossover at 60hz, it will be -3dB at 60hz, not start to fall at 60hz. Method you showed is good to match setting if you run multiple amps but not for setting xover precisely.

@cekpi7

5 жыл бұрын

For example you have 15v without filter, for -3dB crossover you should multiply that by 0.7079 and you get 10.61v or multipy with 0.5012 for -6dB. So you should turn your knob until you get 10.61v when playing your desired cutoff frequency.

@EMFAudio

5 жыл бұрын

If you want it that precise, use a DSP. What you hear is what matters (ear) but the start of the loss of voltage is the start of the slope. What you're talking about is the end of the slope, basically. I prefer the start of the slope because I know where the end of it will be.

@cekpi7

5 жыл бұрын

@@EMFAudio Except you are wrong by whole octave, start of voltage loss is octave before xover point, setting it to 80hz and 40hz is not same. If you do it like that why not just do it by ear when listening to music?

@cekpi7

5 жыл бұрын

@@iDAV8 My point here is that you don't need fancy tools to set it precisely, you just have to know right values to set which he set wrong here. I'm not hating it but missing whole octave is really bad, if you cross over your tweeter at 4khz or 2khz do you know how much difference does it make?

@liljamesjames1884

5 жыл бұрын

@@cekpi7 or you can just hook up a small speaker with a small microfared 100v 200v capacitor.

great, new subscriber

If you are bridging an amp, does this apply as well? I am running 2 4 channel amps to power the speakers and want to ensure everything is set coerrectly. 2nd layer question; If I add a standalone EQ to the mix, how does that work? Thanks so much everyone, still learning and really want to get the basics right before I blow something 🤯

That's is a nice video. I have a question. Where will I set my head unit volume to?

I have a question that needs an answer, If you have several speakers(8 spks all @ 4 ohm load) all totaling 2000 Watts RMS in retrospect, and a receiver that has a 2000 watts peak power rating, is it possible to increase ohm load(4 ohm to 16 ohm) to decrease demand from the receiver to make this work without any damage to speakers and/or receiver?

Good stuff thanks!

"The Gnostics of car audio finding truth for all car audio enthusiasts"

Amazing man. The title should have been about xovers though. It should have included how to set gains using a voltage calculation

@EMFAudio

5 жыл бұрын

A subsonic filter isn't a crossover though, or at least not referred to as one. Setting gains by voltage only isn't exactly a perfect science. It can be flat out wrong if the amp isn't loaded.

@carlosreset7501

5 жыл бұрын

@@EMFAudio i used a dd1 to test to distortion and measured the output, then compared that to using ohms law to calcualte the voltage and compare that to my amps birth sheet. I didnt test with a clamp meter to test actual rms power, but it mathematically was really close. Also, jl amps actually prompt you to set gains with a dmm using voltage. Thanks man for your videos, lots of knowledge and ideas all around

is this the gain as well ??????

Haha awesome video!

When setting the low pass by voltage it's the number you get using pxr= ✓

I currently have a line output converter (Lc2i) and an amp (JL Rd500x1) How would I set the gain on both? Also, With very low freq test running at least 75? Volume level, is there a for me do bypass my factory highs and lows so I don’t damage them? Thanks!

great video i have a ? what was the gain set at when u did this was it all the way down or not? thanx

@EMFAudio

5 жыл бұрын

The gain setting isn't significant to crossover settings or any other setting.

Is there acway to figure out when your hear unit clips using a digital multimeter?

So cool!

How or where do you get the hz for high n low crossover ????also what’s it playing for n the stereo ???

I literally don't understand, I have everything turned down volume all the way up but when I set anything to a certain frequency I get more voltage? For emample on LPF have a tone set to 70hz and I I start turning it up the voltage increases? Unless setting these knobs mean that you barely have to turn them up at all?

What frequency should I set it at for tweeters?

Can you explain how did you calculate the values in volts? I don't understand how you get to 15 volts, then 14.4. I appreciate your support or someone else's.

How does any of this work if you want to tune the hz to what you want. Not just because the reading changes? This seems like you forgot to mention you need a test tone at a specific frequency?

Best video on KZread. Any tips of distortion or keep to using your ears?

@EMFAudio

4 жыл бұрын

No tool is better than your ear, but a nice cheap option to help would be this kzread.info/dash/bejne/aHd_r5J6lNS0eto.html

@FOVAirsoft

4 жыл бұрын

@@EMFAudio Awesome! Hey do amplifiers get hot just from being on? Sounds like a weird question but let me clarify. I have a amplifier that gets nice and hot just from a 30 minute drive without my subwoofer (only speaker hooked to it) playing. Litterally not audible at all, but the amp gets hot. Is this normal? New to all this. Its a class D amplifier.

What type of sound should go through the RCA into the amp while you are tuning? Meaning does the volume on the head unit need to be up only or does it need music or another type of sound

@blue03r6

2 жыл бұрын

Yeah i believe he left this info out.

I'd like to see a comparison between using a DD1 ,oscilloscope, and the ear when gain setting or how accurate different clip light / volt meters are

@EMFAudio

5 жыл бұрын

There will never be a DD1 in this shop, but it would be interesting to get a few people to set a gain by ear and compare it to an O-scope. I can tell you Sundown clip lights are very accurate. If they barely light up you're barely clipping it, if they go full brightness it's VERY clipped.

@UrAvgBasshead

5 жыл бұрын

EMF Audio what’s wrong with a DD1?

@EMFAudio

5 жыл бұрын

@@UrAvgBassheadThey don't prevent clipping like some people think, they don't optimize amplifier potential, they do everything you can do with a DMM, and in some cases they just don't work right. Somebody I was with decided to use it to set gains on a 30x4 Rockford Fosgate amp and it would say it was clipping at about 15 watts. It wasn't.

@UrAvgBasshead

5 жыл бұрын

EMF Audio ok thanks. Best to trust a professional installer is what you are saying. I let my local audio shop do all my stuff anyway.

@EMFAudio

5 жыл бұрын

@@UrAvgBasshead Not necessarily. I've seen a lot of great things come from amateurs, educated and experience amateurs. They didn't get that way without learning and doing. I've also seen a lot of garbage come out of shops. Remember, being hired to do the job makes them a "professional" not the quality of their work.

when you set for the "LowPass" adjustment( 4:14 )did you move the DDM needles to the subwoofer speaker jacks and while you where at it also change the volume again for that🤔❓..thanks

@EMFAudio

3 жыл бұрын

The meter needs to be on whatever channel you're adjusting. If it's not, you won't see a change on the meter at all anyway.

I got a Lightning Audio L-5600....how would I find the voltage so I can do the same thing you did? I plan to use it at 50 watts RMS at 4 ohm for 4 channels and 300 RMS at 2 ohm x 1 channel.

@EMFAudio

5 жыл бұрын

If you aren't much for math, you can use this calculator. www.ohmslawcalculator.com/ohms-law-calculator Plug in the power and resistance and it will fill in voltage and amperage. That would give you maximum voltages. The voltages I was setting things with doesn't matter.

So do I reset the gain , lpf and subsonic before tuning each one?

@EMFAudio

5 жыл бұрын

The gain is only for the relationship for RCA voltage. Once that is set, you don't need to change it. You might find this video educational. kzread.info/dash/bejne/gKWGtthxoZfOk5c.html

What track did u play different frequencys? And how should u gain match to amps going on 1 sub?

@EMFAudio

5 жыл бұрын

I used a CD with different frequencies on it. Nothing special. For gain matching you can simply use your DMM to make both amps have the same voltage output. Alternatively if the amps are strappable you could do that and only have to set 1.

I feel like some specifics were left out. While tuning do you turn the headunit up to the max clean volume or how much volude do you give it? Does it matter? So you need to play a test tone at the frequency you want to tune to?

@EMFAudio

4 жыл бұрын

The volume doesn't matter for finding frequencies to set it to. Yes, the frequency played is a reflection of your setting. That's how you determine you're making a change at that frequency.

@Chukijay

2 жыл бұрын

@@EMFAudio but if you rock the volume on the source unit, you’d essentially be tuning to an already bad signal.

@EMFAudio

2 жыл бұрын

@@Chukijay the frequency played is the frequency played, clarity won't change that. If it's full blown clipped you'll have a voltage spike so you'd know that anyway.

Would running the sub be more accurate? With the actual load the amp would be running?

@EMFAudio

5 жыл бұрын

It could actually be LESS accurate because of the dynamics of the sub. If you did it at a higher volume it would heat up the coil and your electrical system could be dropping in voltage so your output would as well. If it was at a low volume you could do it, which is actually how you'd do it tuning by ear which is what I do.

This is different than another video I watched which indicated I should measure voltage with no crossover, play a tone at the desired frequency, then adjust until voltage is roughly 50%. Example- looking for 80Hz 12db Play 80 Hz tone, measure AC voltage (eg 11 bolts) and adjust crossover until voltage is .503 or approximately 6.5 volts. Thoughts? Thanks!

I have a question, was the gain set to zero? And how did you know the voltage for those frequencies because most amps only show certain hz frequencies? For example 60hz then jumps to 125hz and so forth.

Wouldn’t you be tuning for peak power with this method? Or would music go over the output voltage you turn to when it peaks/gets loudest?

@EMFAudio

3 жыл бұрын

Using true RMS meters takes peak out of the equation but using a tone over time, IE not instantaneously is doing similar.

Fluke for the win. 😎

@markmmm1737

5 жыл бұрын

I'm just going to set my voltage, no wait its just reset and overload???

Hello, please help me. I got a sub with 300wrms 4Ohm bridged to a amp with 300wrms 4Ohm. My desired Voltage would be 34 Volts. But when i put my head unit to 46/62 which is 3/4 Max volume, and my amp on max gain i only get 11.5 Volts ??? If i turn the head unit to 55/62 i can easily get my desired voltage with maybe 3/4 of the amps max gain. I played a 50hz test Tone, Turned equalizer, bass boost lpf Hpf, everything of. should i put my head unit volume a little lower maybe to 50 so its less likely to distort and turn the amp gain a little more up to get to my voltage ? Thank you sir!!!

Are you playing music or frequency tones?

Thanks. You saved me 500 dollars for only a one time use on that product

@austinjackson9650

4 жыл бұрын

Probably better off bringing it to a shop then buying the tool 🤷‍♂️

Does the head unit setting need to be at default before turning amplifier?

@EMFAudio

4 жыл бұрын

That depends on the settings you're referring to.

Should I use the htz that is build in my radio or set the htz on the amp and turn the tuning off un the radio?

@EMFAudio

5 жыл бұрын

The amp can be more precise and has more flexibility in majority of cases. But, often times the radio is sufficient.

That was very helpful

So basically you play a freq on a track and move the crossover until you see a certain number on the meter? How do you know what number to look for?

@EMFAudio

5 жыл бұрын

The number isn't what matters, when it changes is what matters.

@mirkolazar9250

5 жыл бұрын

I believe to answer your question is first you have to find out where clipping is on your head unit then after you figure that out you play the track with volume turned up to that point your dmm will read a voltage once you start turning the knobs on amp and you see the change stop and adjust accordingly

I have a Lanzar VCT-2210 2 channel amp I am confused about if it's a 2ohm or 4ohm amp. 1,000 watts x2 output @2ohms. Dose that mean it is 2ohm per channel???

@EMFAudio

2 жыл бұрын

Bridgeable 2 channel amps will be half the impedance in stereo. If it's 4 ohm mono, it will be 2 ohm stereo stable. If it's 2 ohm mono, it's 1 ohm stable stereo.

Question for a video: Why is a lower impedance desirable? How does this affect the sound of a subwoofer? To elaborate, What sounds different about wiring a Dual 4 to 2 ohms vs 8 ohms? Similarly 2 dual 4s to 4 ohms vs 2 dual 2s to 2 ohms. How does it Change the sound? and ellectrical/wiring requirements?

@EMFAudio

5 жыл бұрын

Funny thing, technically a lower impedance ISN'T desirable. I'm very much a demonstration person so the reasons behind what you're wanting to see would require equipment I don't have for the most part. I do have 2 things that might be able to show it. I'll investigate and keep it in mind.

@ruikazane5123

5 жыл бұрын

Lower impedances allow less voltage to reach a certain watt number, but needs more current. High impedances are the inverse--they need high voltages but significantly less current. Car audio systems use low impedance to enhance efficiency--it is not easy to make an amp that uses high voltage due to a higher ohm load as that exhausts the amplifier's power supply to deliver higher voltages! In transistors, the 'breakdown voltage'--the voltage where the silicon breaks down due to extra voltage stress--is shown by it's insulation layer thickness. A high-voltage transistor has a thicker insulation layer than a lower voltage one, In modern Class D amplifiers, this means a lot. In a Class D amplifier, we have transistors switching at fast speeds: 300,000 times a second or more(300 Kilohertz or more) with full-range applications! As I said, transistors that handle higher voltages have thicker insulation layer. Does this mean something? Of course! Thicker insulation means slower electrical particles, and slower switching! For a stellar example: A computer processor switches at more than 2 billion times a second, more than 2 gigahertz! What is the reason? The ultra-low voltage at around 1.6 volts! So lower voltages can switch faster, and does it efficiently than a high voltage one, at the same voltage. So you can add more current capacity without sacrificing the speed drastically. The reason you see lots of transistors on typical amps is the reason that paralleling them enables increased current handling, about twice when two are parallel with each other. Brazilian amps however, use higher voltage and higher current, and that makes them horribly suspectible to early failures due to overcurrent. Hope this helped you. Have some others read to understand! Kazane 'Sober Fool' Rui

I know it's possible to use a dmm to set gains . Can one find distortion with it as well? Also I am a automotive technician and I use scopes on scan tools...can I use this to my advantage as well?

@EMFAudio

5 жыл бұрын

Oscilloscope is the best way to find distortion, by far! You can sort of find distortion with a DMM, it's the point where you have a sudden irregular spike in voltage but that's hard clipping.

@robsorgdrager8477

5 жыл бұрын

@@EMFAudio thank you. Oh by the by...got a new subscriber 😉😎

Ok so the track on which you turn the volume up and down is ita a hertz tune? Or wtf? What song you using to tune?

@EMFAudio

5 жыл бұрын

Always using tones.

I have a quick and easy question, where are you getting this Hz from, I know you said from the head unit but this is a requirement by the head unit or by the type of music you listen to or subs or speaker you are using, or by the subs specifications???? I know you can change all these settings in the head unit, but it’s according to personal preferences or by who, I know Subs had the requirements for enclosures, ohms etc etc

@EMFAudio

2 жыл бұрын

It's whatever you choose, for whatever your reasoning is you chose it.

how do I figure where I need to be on my amp settings

@EMFAudio

5 жыл бұрын

This might help answer that. kzread.info/dash/bejne/gKWGtthxoZfOk5c.html

Good info how about a video on free air test on a bad as sub n tell us how fs, xmax, n stuff works n do they stay the same after breaking in

@EMFAudio

5 жыл бұрын

I did a video on break in already, it was the first one.

@10krms8

5 жыл бұрын

Looking for it will u have the bannhamers 12s in stock by black friday i need to up grade my 10s

@EMFAudio

5 жыл бұрын

I sure hope so but can't say for sure. Black Friday might be the time to buy anyway.

My head unit is 2v pre out Would that put my gain on amp around the 11:00 position? APCLE 3k

@EMFAudio

4 жыл бұрын

Don't confuse maximum HU voltage with actual HU voltage. If a HU is rated for 2v, you won't get 2v unless the volume is all the way up (which may or may not be clipping) and in the case of subs, the sub volume will also have to be all the way up. It's best to check your actual voltage at a given volume level with your settings where you want them.

@jr1001jr

3 жыл бұрын

@@EMFAudio 👍😎👍

This video would be so much better if you showed what you’re connecting your multimeter to and also explained how you have a target hz and to give you reference point of that target you’re playing a test tone of that particular frequency through your head unit

What does it mean by db overlap when setting gains?

@jRomero713

3 жыл бұрын

Usually for mids and highs no more than 4 and for subs around 7 depending on the power of your amp and sub.

Ive heard that im suppose to have my bass set to what i want it too before doing this?

@EMFAudio

3 жыл бұрын

That is correct.

Shouldn’t you set your lpf all the way up then adjust your gain to the desired voltage?

@EMFAudio

3 жыл бұрын

Yes, all settings besides gain should be done first.

Does the crossover frequency effect the rms power

@EMFAudio

3 жыл бұрын

No.

Im trying to learn this but it’s all Gibberish; okay so what are you playing on the headunit for input? You playing that specific tone your trying to adjust to? Are you playing random music? How does voltage change determine that the frequency you want to set it to is indeed correct? Voltage changes up and down either way.. how did you determine that 14 something volts is that certain frequency or that 13 something volts determine another?

@EMFAudio

3 жыл бұрын

You have to play the specific tone you're trying to set around. If your target is 80 hz, play 80 hz. When you filter above or below a frequency, voltage drops (indication output is being reduced). So if you set to 80 hz high pass, below 80 hz will show a reduced voltage and higher than 80 hz will be the same voltage.

@user-jv8yu7ld7b

3 жыл бұрын

Brother I hear you man they got mad at me for saying the same thing I really didn't understand a word they were saying

Can using a more powerful amplifier and a more powerful subwoofer provide more boomy bass

@EMFAudio

3 жыл бұрын

An enclosure can be boomy, a sub can be boomy, power isn't boomy so much. The amount of power doesn't make it boomy unless maybe you're severely underpowered.

So having a 20A multimeter does it hold that much or can it handle more

@EMFAudio

3 жыл бұрын

You aren't measuring current for any of this, and with no speaker connected there is very little current being output. So the current capability of the meter doesn't matter.

Ok, so my plan is to connect focal polyglass 165 component speakers to my amp. No subwoofer. Is that mean I need to set all frequencies separately or just set it on full range and adjust my jl audio accordingly to the amp output? I am so confused right now lol

@EMFAudio

3 жыл бұрын

If you're using them with the supplied crossover then you should leave the amp full range. If you're using them active without the supplied crossover, you have a lot more adjusting to do for each speaker very specifically.

@Silverado_UK

3 жыл бұрын

EMF Audio sure, that’s a great advice, thank you, didn’t know that. It would be great to see video how to set gain on the amp for full range component speakers. I am typically adjusting it by setting stereo 3/4 volume, playing a song or two and slowly increasing gain till sound is distorted, but definitely want to do it properly now with vault meter! 👌👌👌 thanks again!

is there a reason why u cant just use crossovers from headunit. or isnt it good enough.

@EMFAudio

4 жыл бұрын

You absolutely can, but you should use ONLY that one if you choose to do that. Most HU crossovers are pretty good now, but some are limited. Some you can't choose the frequency or may only have 2, and it's possible neither is appropriate. So, it's really a case by case basis.

What is set at 65 then 70 are you touching the headunit off screen..man i wired up all my systems rock lights do all my own maintenance on my car from coil packs o2 sensors gaskets etc..and this has my mind confused..i was with u at 65hz and 14.43 then lost how you went to 75 and 15volts..

@EMFAudio

3 жыл бұрын

Voltage changes based on where the crossover is set. If you have it set to high pass and you go to a lower frequency than it's set to, you'll lose voltage.

I have a 4 channel amplifier and I have 4 single ohms 6×8(2) and 6×9(2) if I put 1 speaker per channel what ohm load would that put the amplifier in?...Anyone?

@EMFAudio

5 жыл бұрын

4 ohms per channel. If you only have 1 speaker on that channel, that's how it operates.

@johnathanhunter7899

5 жыл бұрын

@@EMFAudio ...but if the amplifier has a 4,2,and 1ohm load, what ohm load would the amplifier be in if I had (4) 4ohm speakers and I have 1 speaker on each channel?

@EMFAudio

5 жыл бұрын

@@johnathanhunter7899 The speaker is what determines the load on the amp. If you have a 4 ohm speaker, it's 4 ohms at the amp. Each channel is separate and treated as such.

Quick question if you were to hook up a car stereo line out converter to the speaker terminals on a car amplifier and hook up a car amplifier to the line out converter will the car amplifier get damaged

@EMFAudio

4 жыл бұрын

You mean using the output from an amp to turn it into another RCA output?

@travisgulley2652

4 жыл бұрын

EMF Audio yeah I mean that and what I was going to say could that possibly damage the amplifier itself

How can you set lp and hp crossover without frequency mark on amp?

@EMFAudio

5 жыл бұрын

That is what this video explains.

@paulharris9919

5 жыл бұрын

He is playing a test track cd or digital file..... But that never got mentioned or shown in the video..... But if can down a test tone generator you can do this.

@joebelton2146

5 жыл бұрын

EMF Audio Idk if I missed it or if you didn’t explain that you are playing a test tone to get the voltage reading. That’s kinda important to the video. I was lost on how you came up with the voltage until I read another viewers comment. I’m not being critical and maybe it’s because Im a novice but that’s kinda important for us rookies.

@EMFAudio, what is the reason and is it safe to jump the remote wire directly from 12 v? Can u do this in car? I'm gonna assume if it was to be done in car that a toggle switch would be needed to manually power on and off the amp.

@EMFAudio

3 жыл бұрын

It is safe to do that, and the reason I do it sometimes on the bench is just to power it up. I wouldn't recommend doing it in a car because you'd forget to turn it off, killing your power supply, and there is absolutely no reason to leave it on.

@EarthPoweredHippie

3 жыл бұрын

@@EMFAudio how did u know I forget shit all the time?

@EMFAudio

3 жыл бұрын

Science

How come the remote wire is jumping into the power terminal?

@mopar392ta3

5 жыл бұрын

Nvm I forgot this is a test bench

Why was voltage 14.4v for hpf then 13.2v for life then 13.5v for subsonic. Wouldn't voltage for all 3 be the same of 14.4v🤔

I have a dual voice coil 1 ohm kicker sub wired for 2 ohm , now when the impedance is measured it actually reads 2.6 ohm ! When useing ohms law do i stick with 2 ohm to work out gain voltage or use the 2.6 ohms it reads ?

@EMFAudio

3 жыл бұрын

Are you using a Harbor Freight meter? If so, impedance is wrong, it's probably 1.0. they're often 0.6 ohms off.

@trev815

3 жыл бұрын

@@EMFAudio i sussed it , no im in uk so not harbor freight ! Was told to touch terminal and deduct the difference, low and behold the difference was .6 so its a true 2 ohm final load ! Incidentally i baught an o scope and got 3 extra volts over the dmm before any sign of clipping, sounds a lot better 👍 thanks for the reply

Q sir, speakers or no speakers? Is the values the same? For setting the gain I mean, have you tried it with speakers? after all it is a load. Dynamic

@EMFAudio

4 жыл бұрын

The gain will typically be correct operating within rated impedance. When you go below rated impedance is when things change and you'll clip much sooner than the "correct" setting.

So you want to put a lead on each channel? Negative lead on say channnel 1 and the positive lead on channel 2?

@EMFAudio

4 жыл бұрын

That isn't necessarily a reading through the same channel but in most cases the ground is one in the same for all channels. So in doing that you'd just be reading off of where the positive is. There could be some variance in some cases though, so it's best to use the pos and neg to the channel you're checking.

Ok, so you are using a sine wave generator producing a certain frequency and when it begins to fall off during adjustment of the crossover, you are at the correct frequency?

@EMFAudio

5 жыл бұрын

More or less, it's connected to a CD player with tones.

@EMFAudio

5 жыл бұрын

@@angelvip2474 Well, for starters, you use those tools using an amp with no load on it and a set track to use. Do you listen to the track it was set with, and do you listen with speakers connected? What happens when the track you're listening to is recorded at a different volume level? The best adjustment is done in real time, because of your ears.

@EMFAudio

5 жыл бұрын

@@angelvip2474 So what if things are recorded at different volumes? That's literally everything. People say all the time it's impossible to clip their system because they used a DD1 to set gains. Well when that recording is at a louder level than it's set for, that's clipping. That completely negates using that tool. You just gave the perfect example of why not to use one. I'm not sure what "agenda" I have. I'm not saying "that product is crap, buy mine", I'm not selling a product for that solution. Your method works for you, great, that method is for beginners doing installs in their driveway. Professionals tune by ear, because optimal gain setting doesn't mean balanced sound either. Just because your clients have money doesn't mean you're good at installations, it just means they paid you.

But how or what r u useing to find your tone?

@EMFAudio

4 жыл бұрын

Any tone works.

i was able to test the RMS output of my amplifier with some test dummy loads and a multimeter

You probably could have explained that you are using the dB rolloff to XO frequency to calculate the voltage drop at the XO frequency point. I'd like to recommend the Digitech QM1594 multi environment meter for audio work. It just has a lot of very useful scales for audio. Admittedly I am more into PA & HiFi than car audio. It has: a sensitive VAC scale for signal level which is rare on millimetres, Frequency, dBC, mV, Resistance, Capacitance, Temperature (ambient and probe) great for finding failing components, Lux meter which I have used verify IR remote control operations. It has just been a really useful tool to diagnose problems and set up PA system such as gain structure and max dBSPL at unity Amp input gain. This is important maximise S/N.

@reecekotarski7875

Жыл бұрын

How did he calculate the 13.3v target he was after ?

How do you know what frequency is what voltage??

@EMFAudio

3 жыл бұрын

Voltage doesn't matter, voltage change is what matters.

Your running a test tone?

@EMFAudio

3 жыл бұрын

Yes

Is it possible to get a 1 ohm load from 2 2ohm dvc subs?

@EMFAudio

4 жыл бұрын

No.

@jacbybentril7114

4 жыл бұрын

Either half ohm or 4 ohm

Does this work with Brazilian amps

@EMFAudio

5 жыл бұрын

It works with any amp, filters just cut power. If voltage is going down, it's cutting power. It's not to say that the amp won't blow up making adjustments because Brazilian amps have been known to do that, but the method works.

When it starts to fall off you have gotten to what frequency? The same note you’re playing out to the amp?

@mopar392ta3

4 жыл бұрын

Kevin Lechner the frequency that you play. So say you want your mids to be on high pass filter. You play a 80hz test tone so when it starts to fall off you e hit the 80hz filter.

@kevinlechner7722

4 жыл бұрын

MOPAR 300 do you know if the Rockford Fosgate prime 6.5 x3 co axials come with the filter built in? I’m pretty new to car audio

@mopar392ta3

4 жыл бұрын

Kevin Lechner coaxial only has a filter for the tweeter. The woofer part of the speaker is gonna bE playing full range. So you’ll have to set the filter on your amplifier or headunit if your headunit have that built in

@mopar392ta3

3 жыл бұрын

bb foto I agree. I set mines using the cc1 my friend had

Is there a reason why you don't like "Brazilian" full bridge amplifiers? EMF Audio

@EMFAudio

5 жыл бұрын

In short, yes. If I go in depth it will turn into accusations and crying by somebody, or many.

@matthewmassey2333

5 жыл бұрын

Well you could always make a video detailing the reasons why you feel half bridge technology is superior. I have personally had great success sq/spl wise. But I also leave more than enough Headroom. Given the technology at hand

@matthewmassey2333

5 жыл бұрын

But my opinion on the design may change as yours may also. With that said I enjoy your videos I have subscribed and look forward to some more videos one info I would like/need to learn

@EMFAudio

5 жыл бұрын

@@matthewmassey2333 The people I speak of would still have the same comments. They'd also argue why one is different than another when they aren't.

@EMFAudio

5 жыл бұрын

@@matthewmassey2333 My opinion won't change, I know that. I've seen the results of too many subs on them. But, for me to properly educate in the video form I do, it would require showing, not telling. To show, it would require some equipment I don't have, including an amp to test/sacrifice.

What about the gain? To clipping?

@thomasmroz

5 жыл бұрын

Agreed, "settings" should probably be clarified.

@EMFAudio

5 жыл бұрын

Gain is a whole video in itself I think. The best way to set it is by ear, using a DMM will get you close but there are variances that would have to be discussed in the video to show why you can't rely on any single tool for a perfect setup.

@cekpi7

5 жыл бұрын

@@EMFAudio I never expected this answer from someone in pro audio world, by ear? seriously? Most people don't have trained ear and can't hear small amount of distortion. DMM won't help either since you can't see waveform.

@EMFAudio

5 жыл бұрын

We're in the car audio world, not the pro audio world. Small amounts of distortion, like 1-2% you may not be able to hear, but it also won't matter. As far as using a DMM to set gain, I never recommend that because of variables, you could only go by theory of rated power to find the maximum voltage you should use. That would make it a starting point. If you really want to be technical about it, using an O-scope where you can see the waveform isn't perfect either because of the same variables as using a DMM. The ear is the best way, whether or not your trained to hear it or not isn't an ear problem, it's an installer problem.

@cekpi7

5 жыл бұрын

@@EMFAudio It's nothing wrong if you set it by ear if you know what you are doing, but to amateur it's not. Even if you give him most expensive o-scope he still won't know what he's looking at. DD-1 is only thing i know that amateur can use and still get good results, everything else is for experienced installers.

All I want to know is how much was the gain set to on the amp while doing these tests was it on 0, half or three quarter

@victorprudeaux500

4 жыл бұрын

Gain is Irrelevant, what matters is the voltage reading at the point of when it falls off. voltage will be stable until a filter knocks the level down. and amps work best set full out.

@EMFAudio

4 жыл бұрын

Gain position is not an indication of power output and essentially doesn't matter. It's a setting to match signal input voltage and that's it.

@aleemhosein6813

4 жыл бұрын

@@EMFAudio thank you