How to Phase Your Speakers
Intro: How to Phase Your Speakers
In this instructable I will cover phasing of speakers. This is designed to be just a introduction to phasing, some phasing techniques are very advanced, however, I will show you what I think is the easiest way to think about phasing.
STEP 1: What Is Phasing?
Many people might ask: "What is phasing?". That can be very difficult to explain, but I will do my best. When you produce artificial sound from multiple sources, you always run the risk of being out of phase. What I mean by out of phase is this: one source is "contradicting" what the other source is doing. When a speaker produces sound, it is vibrating back and forth. When you phase a speaker, the idea is to have both speakers moving in the same direction.
STEP 2: When Do You Need to Phase?
Let's determine if you even need to phase your speakers. There are a three questions you need to ask yourself.
1. What were these speakers meant to do? (Pro Audio, Stereo system, Surround Sound, etc.)
2. What was the amplifier meant to do? (Pro Audio, Stereo system, Surround Sound, Powered Speakers, etc.)
3. What orientation was the system designed to be used in? (Facing each other, same direction, surround, etc.)
If you are using the system in the way it was designed, then you do not need to phase the speakers. But if you have a system that was designed to be used with the speakers facing each other and they are now facing the same direction, or you have a system that was designed to be used with the speakers facing the same direction and they are now facing each other, you need to phase them.
1. What were these speakers meant to do? (Pro Audio, Stereo system, Surround Sound, etc.)
2. What was the amplifier meant to do? (Pro Audio, Stereo system, Surround Sound, Powered Speakers, etc.)
3. What orientation was the system designed to be used in? (Facing each other, same direction, surround, etc.)
If you are using the system in the way it was designed, then you do not need to phase the speakers. But if you have a system that was designed to be used with the speakers facing each other and they are now facing the same direction, or you have a system that was designed to be used with the speakers facing the same direction and they are now facing each other, you need to phase them.
STEP 3: How to Reverse the Phase
Now that you have determined if you need to phase, the next part is easy. This is how we phase a speaker. Normally on a straight phase, the marked wire would always be in the positive jack of both the speaker and the amp. With a reversed phase, the marked wire should be reversed on either the amp or the speaker. (Not both.) In this way you are reversing the polarity so that when the speaker would normally move out, it moves in; and when the speaker would normally move in, it would move out.
STEP 4: Copyright
Please note that I do claim copyright to the information. I did not use any specific sources when compiling this information, all of this is from my personal experience.
You may quote parts of this information for educational purposes. Under no circumstances will you sell this information.
I do not own the copyright to any of the images, however, as far as I have been able to find, I have the right to use them in this instructable. If there is any question about whether or not I have the right to use these images, please contact me. I have no intention of stealing anyone's intellectual property.
Use of this information implies that you agree to these copyright terms.
© 2011
You may quote parts of this information for educational purposes. Under no circumstances will you sell this information.
I do not own the copyright to any of the images, however, as far as I have been able to find, I have the right to use them in this instructable. If there is any question about whether or not I have the right to use these images, please contact me. I have no intention of stealing anyone's intellectual property.
Use of this information implies that you agree to these copyright terms.
© 2011
26 Comments
mlwmlw99 10 years ago
thegeeke 10 years ago
noingwhat 12 years ago
D<<<< >>>>>C
or
D<<<< <<<<
Dantonton485 3 years ago
thegeeke 12 years ago
Dantonton485 3 years ago
Dantonton485 3 years ago
AndersM15 4 years ago
https://www.autodesk.com/company/legal-notices-tra...
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Not to mention that there's a Creative Commons notice at the top right by the publishing date
jorricks 10 years ago
— Harry Truman
DGerman 10 years ago
thegeeke 10 years ago
sspence 11 years ago
thegeeke 10 years ago
jj.inc 12 years ago
thegeeke 12 years ago
I really don't understand why that would affect phasing though. The concept is still the same, and it is still necessarry. If there is something you think I missed, please let me know... I am more than happy to add it. The purpose of my instructables is to provide the basic information that professionals like myself use day to day in a way that someone who knows nothing about sound can understand.
e5frog 12 years ago
thegeeke 12 years ago
I am not required to provide this information to anyone, but I don't see anyone else posting about how to phase on this site, so I figured I would. I make up to $200 an hour doing professional audio and home theater design. Phasing is just one of the basics of my craft. When you can "shape" sound, and make $200 an hour doing it, then if you still disagree with what I say in this instructable, then we can talk.
Every time I publish an instructable, people ask me why I put the copyright step in. However, they ask me because I choose what my license agreement is when I publish the instructable, not because they think it shouldn't be copyrighted. The reason I use redundancy, is that I never noticed the license link on the side of the page before I published an instructable, and I want to absolutely clear on what my terms are.
If you did read my whole instructable, and you didn't understand it, I will be happy to explain to you in more detail. However, I sincerely doubt that you read the whole thing.
-thegeeke
Amar143institute 12 years ago
rimar2000 12 years ago
thegeeke 12 years ago