![]() ![]() However, it will almost certainly have a negative impact on the way the audio sounds as it is outputted by the speakers. Wiring speakers backward won’t cause any damage to the devices, nor is it a dangerous practice. Sonically, this causes certain frequencies to be canceled out and has an undesirable effect on the audio quality. Reverse polarity leads to phase cancellation when more than one speaker is being used. This causes the speaker to move outwardly when it should be moving inwardly, and vice versa. When speaker wires are wired backward, this creates what is known as inverted polarity, which is also sometimes called “reverse polarity”.The correct speaker polarity is achieved when the positive terminals on both the amplifier and the speaker are connected, and the negative terminals are also connected. Polarity is created when the wires are used to connect a speaker to an amplifier, so that sound can be played back through it. The reason that it’s important to wire speakers correctly, is linked to speaker polarity. In this comprehensive guide, we’ll look at the issues surrounding speakers when they are wired backward, and how you can avoid them. Wiring speakers backward is an easy mistake to make, particularly if the wire is not identifiable by its color, or labeled clearly. When the polarity is reversed, the performance of the speakers is significantly altered. It also negatively affects the stereo imaging of the speakers. Phase cancellation results in certain frequencies being reduced in the output, and it is detrimental to the audio quality. Wiring speakers backward, causes them to be out of phase. What happens if speakers are wired backward? Speakers must be wired correctly if you want to ensure the best sound quality from your audio system. If your audio mixer or amplifier DSP does not allow for polarity inversion, you can use a polarity reversal adapter.Speaker wires are used to connect an amplifier to the speakers so that the audio signal can be transmitted between the devices. Any changes in polarity are almost always made in an audio console or amplifier DSP, rather than in the wiring of speaker terminals. Line arrays of full-range speakers, such as those used in live sound reinforcement should all be wired the same way.Įven the speakers in subwoofer arrays, which sometimes contain speakers with inverted polarity to achieve better directionality, are usually wired with correct polarity. If you are using an array of speakers, inverted polarity in one of them will cause significant changes in how the array behaves. In the video at the top of this page, there are audio demonstrations of this scenario. To hear this, it’s best to you use two speakers in stereo or to use headphones. However, what if one speaker is wired in the correct polarity and the other is reversed? This will cause a significant effect. If both speakers are wired the same, whether in the correct polarity or reversed polarity, there will be virtually no effect. ![]() Reversing polarity with multiple speakers can cause more noticeable effects.
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