How To Find Which Speaker terminal is Positive or Negative

Easy trick with a 9volt battery

[ericdare]

Just want to tell you that I was on YouTube for 10 minutes and couldn't find one person just2 spit it out and say what you did small is usually the negative..BTW ur the man

[hairylarry]

Thank you for making this video. I have a great set of 6X9's from a Chrysler 200. There were no + or - on the speaker connections. I did exactly what you showed. I took the 9volt battery out of my smoke detector and used it. Just like that, I figured out what was the positive and negative side. THANK YOU what a great trick I will use for the rest of my life!!! Oh yeah, I put the battery back in the smoke detector.

[CraftyZA]

I'm actually down a youtube rabbit hole on how to service osciliscopes, but this looked interesting so i clicked.
This is a valid way of testing. Just a warning, 9v is okey for larger drivers like this, but smaller would need lower voltage. Also try and keep it only connected for a short time. Sub second. ie just rub the wire over the contact. those coils are made up of super thin wire and can burn really quick.
That said, I have yet to find a driver where negative is not on the left. Seems to be universal - left, + right with the connectors pointing to you.

[terryatkinson]

Thanks, just what I was looking for. Got second hand speakers for an old car and trying to make something from nothing.

[mitchelldavis]

You can always hold any speaker in the world with the magnet up the air and the cone toward the ground face the wire terminals towards your chest the right side terminal is always positive

[Nonrurbizniz]

Thanks for the help, 1st of all, with this Awesome video! I must admit that I have never been taught this before, and even after searching over the years (through many years) to finally have an answer to this question ⁉️ You helped me with this thing that has been something that I have always wanted to know and have an answer to. Again huge thank you, seriously!😊

[ouriyanaous]

Great instructive. Short and to the point. Thanks.

[deejay]

So how will u know the negative and positive sides with a bullet tweeter

[staycurious]

Perfect! I can now test my civic speaker to see which door wires are pos and neg! 🎉🎉🎉🎉❤

[westbay]

Thanks. Looking forward to you doing a video on testing speaker ...using a ohms meter. What is a good ohms reading etc. Thanks.

[johnlund]

You answered my question. The smaller terminal is negative. I bought a replacement speaker and it has two same size terminals

[savagerage]

Great video! very informative and helpful!

[s.s.]

You D man! small is negative that's all I needed buddy save my life and less than one minute🙏

[fat_Bunny]

Does that mean speaker is working fine ?? My tadio is on and I have no audio NONE JUST WANT TO SEE IF SPEAKERS are operational

[Samsos]

What if the door wires are not labeled how do you find that out

[AbidAli-bosv]

How did you determine which wire of the car or deck is going to attach to positive and which to negative terminal of speaker since you said both are gold wires probably not marked as to which is which.

[renhoek]

Wow! Didn’t say Go Ahead and…. at all. You sir are a very unique Yank! My hat comes off to you. And good video, to the point.

[johncoscia]

What about tweeters ? Sorry to be a pain but I used Electrolytic capacitors in serious to protect my tweeters and does polarity matter ? Thanks .

[archuka]

Thanks for the information and demo -- appreciated

[AtariBorn]

So, I've heard it's better to use a double AA because anything over 1.5 volts could blow the coil. I'm assuming this would apply to cheap or old paper cone speakers but have you tried something smaller than a 9 volt?