Finally somebody that knows how to describe impedance rise correctly! A very very misunderstood topic by most people

WOW! This is the best hands on demonstration of impedance that I've ever seen!👍👍👍👍👍👍👍

Man it would have been cool to see this vs the same in a box vs the same after playing hard and everything was kinda hot.

Nice for clearing up some arguments .solid video again ,need to do this like twice a week .

@EMFAudio

5 жыл бұрын

Making these videos takes up a lot of time, and keep in mind that once a week is 52 videos a year.

thanks for the info !

Exactly bro, I think people just went along with the term box rise just to keep from having to go into this the Long explanation you're doing right now. So THANKS

@EMFAudio

5 жыл бұрын

I think more people don't understand what it is. They think it's a set number that doesn't change once it's established at one frequency.

@4gbmeans4gb61

5 жыл бұрын

Alot of peope who parrot whatever they hear as if ifs fact. Everyone to lazy to ask a bunch of questions and do actual research to find a real answer. I love videos like this as it shows first hand facts and walks you through them.

@74midwestbass74

5 жыл бұрын

For sure! I'm a researcher. I love info. Doesn't matter if it comes from a video or a book!

very good vid. learned a lot .

So to pull more out of my 5K amp should I get a D1 single subs and run at .5ohm since while playing music I wont hit .5ohm as much but will hit 1-2ohm more often and hit harder?

Awesome video bro!even I mostly understand it now

I love this video now I know I'm going to wire my 2 bridged Hifonics amps to 0.50 ohms 0.25 per amp cause it probably will never drop much below 2 ohms bridged or 1ohm per amp after ohms rise of the mechanical factors of a woofer👍 loved it

@EMFAudio

4 жыл бұрын

Pay careful attention to the content of the video, all of it, because unless you're playing 1 frequency only there is a good possibility that isn't going to go well for you.

@RyanBassForLife

4 жыл бұрын

@@EMFAudio your right ill just keep it the way I have it. 2ohms bridged on my 2 dule 2ohm 18" subs

@jasenlauver4862

Жыл бұрын

Can’t you adjust your subsonic to compensate?

So is wiring a 1 ohm rated amp to .5 the same as wiring a .5 ohm rated amp to .25?

I didn't had a clue until now....

Can i ask a real question is the lowballer like the bottom line of your line up the name scared me away but banhammer sounds like thor choice of sub

@EMFAudio

4 жыл бұрын

Yes, it's our entry level, though it's middle of the road for many.

so how do you combat imp. rise? use an amp that does double the power you sub is rated for at 1ohm?

@HellaBassTBO

27 күн бұрын

Yep...if you have a lot of rise get more amperage and then you can play louder at higher frequency I'm about to sell my 3 5ks for 3 8ks because I rise from 1.34 to 4ohm at my peak 33hz and I know I can get a few more db's by adding almost double power 😊

nice vedio very helpful. Could you link me to a web page to help me understand ts parameters better.

@EMFAudio

4 жыл бұрын

kzread.info/dash/bejne/eoasmqOehrOXaLA.html and kzread.info/dash/bejne/fJ9oq5JupJOXc9o.html

Does heat affect impedance? Say I had a 8K amp and my voice coils on my subs started to heat up at 10 minutes of play time. Does that significantly alter the impedance of the subwoofers?

@EMFAudio

5 жыл бұрын

Yes, it absolutely does! There are 2 ways this can be demonstrated. You could run a test tone with an SPL meter and watch SPL drop over time as it gets hot (this is assuming your voltage isn't dropping). The reason being, impedance goes up, power output goes down, SPL goes down. Or, you can check impedance while cold, play them till they get warm/hot and immediately check impedance again. You'll see impedance is higher than when they were cool. After they cool off, they'll go back to "normal".

@kastoremaru

5 жыл бұрын

@@EMFAudio Thank you for the video and explanations.

Sean .. how do we measure frequency then. Do we must have osiloscope to measure it

@EMFAudio

5 жыл бұрын

If you don't know the frequency being played you could use an oscilloscope or a listening device.

@mr79109189

5 жыл бұрын

Yes because what is put out from the source isn't always right.

So if i understand this correctly you will only get an amps rated power on a specific tone if any at all ?

@EMFAudio

4 жыл бұрын

In real world application, correct. Getting every watt possible should be the last of your concerns though.

@777smitty4

4 жыл бұрын

thanks great info i have always tried to over power and adjust for best performance. amps and subs seam to last a lot longer that way. i don’t break the glass anymore . now i prefer good sound

So am I safe to wire my sub to .5 ohms daily?

@EMFAudio

5 жыл бұрын

That is a loaded question. There are a dozen variables where any single one of them could lead to a yes or no.

What is that program??

@EMFAudio

3 жыл бұрын

Termlab

What do you think about running an amp at .25 ohm daily ?

@EMFAudio

5 жыл бұрын

I don't know of any that will. More times than not they'll protect before you get past half power. They protect for a reason, even if you sorta got away with it, I wouldn't push your luck.

@EMFAudio

5 жыл бұрын

Also, efficiency goes completely to garbage that low.

@matthewzenith2800

5 жыл бұрын

Thanks for the tip ..I'll be wiring my subs back to 1 ohm then

Uhhh bannhamers 12s when will they b back in stock

@EMFAudio

5 жыл бұрын

I can't give a definitive date on anything till it's within 30 days.

@10krms8

5 жыл бұрын

K thanks i whant to stay with bannhamers instead of orion hccas

I don't think anyone argued that rise doesn't exist outside of an enclosure, I think the term box rise makes sense because in your box at your peak you'll have a different impedence then you would in a different box. For me I peak at 46hz which brings me to 4.4ohm and hits. 146.2 on an audio pipe 2k. So probably ~5-700w.

@EMFAudio

5 жыл бұрын

That isn't correct, which is why I made this video and have another one planned. Just like a subs characteristics change impedance shifts in free-air, they also change in the enclosure. Your impedance during play can change from any given box change, but you can also have a given enclosure and change the sub and get a different impedance. The enclosure isn't a set impedance rise, only then would "box rise" be sort of correct because that's still a reflection of impedance. The only way box rise would be completely correct is if it was having an opposing force on gravity.

@Str8GasGenetics

5 жыл бұрын

@@EMFAudio while I get what your saying I see this in other hobbies. One of my other hobbies is growing weed. Weed growers call a cutting a "clone" and old gardeners hate that term.

@EMFAudio

5 жыл бұрын

@@Str8GasGenetics I see what you're getting at, but what I'm saying is literally two completely different principles, one of which isn't real. What you're saying would be like calling the cutting a clone, but it's actually a regrowth of a potato.

Well I think we have used the wrong term but that's what we want to say when we say box rise

@EMFAudio

5 жыл бұрын

I don't think people understand it, I'll do another in depth video later. This video explains some things though.

@COMPASBASSCHICALI

5 жыл бұрын

@@EMFAudio Yea I don't understand it but I know that when people use the term box rise they mean ohms going up.

@ThisIsSolution

5 жыл бұрын

Box rise IS the change of impedance during operation, that's the common name people use regardless of their comprehension of the subject

@EMFAudio

5 жыл бұрын

@@ThisIsSolution Box rise is the elevation of the enclosure. It is not a thing, and to say "box rise" is correct, the sub wouldn't experience the same thing outside of a box, which it does.

@ThisIsSolution

5 жыл бұрын

@@EMFAudio Me: i was agreeing that it's the common language, not arguing the technicalities of English or math about the subject, it's easier to say "box rise" than explain exactly what's happening.... much like saying when i punch your face you get a "black eye" You: OMG black eye isn't a thing your eye doesn't turn black, black is the absence of color and the color you experience around the eye socket and adjoining skin is just burst capillaries and blood mixing with skin and flesh giving the appearance from a darkened contusion what the heck bro having a black eye doesn't exist ok. Me: the earth is flat You: omg the earth doesn't exist, the earth is an ideal, the combination of social and physical representations that combined with conscience..... Me: farted and left chat

@EMF Audio the Math don't match Ex: at 50hz => 19.7v * 4.4i = 86.68watts

@EMFAudio

4 жыл бұрын

You aren't adjusting for power factor, the "true power" does. The voltage and amperage are raw data figures.

@eliancruz7968

4 жыл бұрын

EMF Audio how I can find the power factor of a subwoofer?

First

Whoa. A laptop near a sub? Hard drives are magnetic, be careful. Subs have it's own impedance rise. The term 'box rise' is said when the impedance of the sub shifts different than in free air, so it's not real at all! Hihaha

@EMFAudio

5 жыл бұрын

SSD's aren't magnetic. The field on the sub isn't strong enough to reach that distance of any significance, and rotational drives have an aluminum case that works as a faraday cage as well, to some degree.

@ruikazane5123

5 жыл бұрын

EMF Audio I know that! I just thought that you're running a *hard drive* . SSDs aren't hard drives, they are flash drives!