There is no polarity in a speaker wire. But there is a polarity between the speakers and the amplifier that has to be maintained for the audio system to work properly. Also, the bass will be really thin. The reason for keeping the polarity of speakers the same in an audio system is so that you don't end up with a phase difference between channels if different channels are connected reversed. If you have a single speaker the signal is AC so it doesn't really matter which way around it is connected.
Does thicker speaker wire make a difference? Thicker wires are better: It's true that for long runs, thicker wires are better at reducing the effects of resistance. But for most set ups those with speakers within ft of the amplifier , gauge lamp cord is fine. For speakers to ft. It would take miles of speaker wire to hear any difference. Can Speakers damage amplifier? In normal use, correctly matched speakers which do not develop a fault will not damage a valve amplifier, though if the valve amplifier is turned too loud and blows the speakers, the resultant damage can in turn damage the amplifier.
Does reverse polarity matter? The bottom line is that reversed polarity at outlets is a shock hazard. Electronic equipment plugged in to an outlet with reversed polarity will still function, but that doesn't mean it's safe.
If you have outlets with reversed polarity, you should have the wiring repaired by an electrician. As an Amazon Associate, ImproveCarAudio will receive a small commission from qualifying purchases made through the links in this article.
In such cases, it is important for you to know more about car speakers and how sensitive they can be to polarity. Positive pressure in the air happens when the soundwave makes a change that is above the normal air pressure in the room.
Meanwhile, a negative pressure happens when the soundwave makes a change that is below the normal air pressure in the room. Soundwaves actually come in the form of an actual wave wherein the highs are the positive pressures, and the lows are the negative pressures. The sequencing is determined by which between the positive and the negative pressure comes first.
For example, when you strike a drum, the fact that the upper part of the drum moves down creates a negative pressure in the air, thereby making the first part of the soundwave negative, which is then followed by a positive pressure when the upper part of the drum begins to pop back up.
So, in other words, when we talk about the polarity of soundwaves coming from a speaker, we are talking about the wavelength created between the amplifier and the speaker. The same goes for the negative terminals. Car speakers work in the way that electric current passes from the amplifier over to the speakers through a wire that connects them.
The amplifier is the one that first receives the electrical signal, and it will then allow it to pass to the speakers, which will then move forward and backward depending on the polarity of the signal it is getting from the amplifier.
However, when they receive a signal from the amplifier, they will begin to move backward and forward. The backward movement represents a negative pressure, while the forward position represents the positive pressure the speakers make in the air particles in the car.
In that regard, polarity becomes important because the electrical current that is coming from the amplifier to the speakers should match the terminal. For example, even if the current sent to the speakers from the amplifier is positive, but you connected the wire to the negative terminal, the movement the speaker will be making will be backward even though the sound it produces is positive.
This could create weird distortions and changes in the quality of the sound coming from the speakers. Speaker tester is a tool that is specifically made for these cases and is not even very expensive. It does not only test the wires but also checks if the speaker works properly.
Pac tester is available on Amazon, so if you are going to test either wires or speakers, click this link and check the latest price. In most cases, you simply have to look at the labels on the speakers and the wires to know which ones are positive and which negative.
The plus and minus symbols will clearly indicate which ones are negative and which ones are positive. Meanwhile, in some cases, red color indicates positive, while a black color indicates negative. Same thing that happens when you get the polarity of a DC motor backwards fundamentally a very similar device to a speaker. It goes the other way. All we respond to is the motion itself, if in isolation. The phase effects have already been explained - you get waveforms cancelling and all kinds of interesting interference effects.
It's awful. Quote: 3: To a non-audiophile, does it really make enough of a difference that I'd even notice? To a non-racer, does the RC car going backwards make enough of a difference that you'd even notice? To add a point that I don't think has been spelled out well enough: It doesn't really matter which polarity the speakers are connected with, as long as they are all connected with the same polarity. For each channel, the easiest thing is of course to connect the red terminal on the amp or receiver or whatever to the red terminal on the corresponding speaker, and black to black.
OR, if you like, you could connect red on the amp to black on the speaker, and vice versa. However you do it, if you now reverse all of the speakers' connections, you will reverse the system's "absolute phase". But absolute phase doesn't matter. Some people claim that it does, some claim to be able to detect when a system's absolute phase is "wrong", but this is one of those things that has never been reliably shown in listening tests.
There is utterly no guarantee that the rest of your system preserves absolute phase anyway. In fact, this non-guarantee goes all the way back to the recording studio. There is no guarantee that when the studio mic's diaphragm was pushed in by the positive-going portion of a sound wave, that this will be recorded with positive-going numbers in the recording.
Or that positive-going numbers in the recording will result in a positive-going waveform out of your amp. So the odds are that about half of your recordings are recorded with "reversed phase".
So whichever way you hook up the speakers, they'll be "wrong" for about half of your recordings. To repeat: It won't matter. But: Connect one channel red-to-red and black-to-black, and the other red-to-black and black-to-red, and your speakers really are wired wrong. They're "out of phase" in the only way that matters: Relative to each other.
So what we are talking about here is called "relative phase". If both amp channels' outputs swing positive at the same time, one speaker cone will move in while the other moves out. That is not what is supposed to happen. It will not result in anything like complete cancellation, but it will sound somewhere between weird and awful.
Bass will be diminished, and as you walk around between the speakers you will notice your "where-is-the-sound-source" directional sense doing backflips. Edit - added: I actually recommend that everyone who's interested in audio try this connecting your mains out of phase w.
Different people will of course experience it differently. It's the most fun if you play a monaural source. One point that is interesting is how incomplete the cancellation is outside of the bass range, even if you put the speakers right next to each other.
Hat Monster wrote: To a non-racer, does the RC car going backwards make enough of a difference that you'd even notice? If you can't tell one end of the RC car from the other, and the cars were always going backward just as much as they went backward i. Rear wheel steering on front wheel drive would be fun, albeit briefly. DriverGuru wrote: It doesn't really matter which polarity the speakers are connected with, as long as they are all connected with the same polarity.
Beat me to it. Yes, if polarity isn't the same for both speakers in a stereo setup, at points equidistant between the speakers you'll get cancellation when you should get reinforcement.
In practical terms, that means that things that should sound like they're in the middle of the soundstage magically get turned into ambient sound - they cancel out in the middle, and you hear them instead once they've bounced off the walls and come back to your ears.
Hat Monster wrote: Rear wheel steering on front wheel drive would be fun, albeit briefly. Be like driving a forklift, eh? I likes me some forklifts!
In that case, I think I could tell one end of the car from the other. One thing that annoys me about my current receiver is that it whines that the speakers are reversed when I know for a fact they are not. So I flip the cables - yep, still complains about being reversed. Flip them back again , and it's suddenly fine. It's like those stupid USB cables that you have to rotate three times. Sounds like they're reversed in terms of spin, not charge.
Quote: One thing that annoys me about my current receiver is that it whines that the speakers are reversed when I know for a fact they are not. I have to wonder how the hell it thinks it knows. Does it have a room measurement microphone and function? And is this for some reason operating all the damn time?
Unplug the damn mic. DriverGuru wrote: I have to wonder how the hell it thinks it knows. Unplug the damn mic It complains every time I plug the microphone in, yes. For most music it wouldn't really matter, but as someone who sits in an orchestra, hearing the violins stage left would drive me batty. Considering how it usually complains about the center speaker, I doubt it's reversed. It does actually say "out of phase".
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