Unhook one speaker's wire from its audio source (amp/receiver). If the woofer cone goes inward (opposite of what happened last time) then this is the speaker whose polarity was reversed. Which ever wire was touching your battery's positive end is going to the negative terminal on the speaker, and vice versa.
What happens if two speaker wires touch?
Usually the result of speaker wires touching (shorting out) is a dead amp channel. Though if say the right channel + touched the left channel - it might do nothing. Or blow up the amp.
Do speaker wires carry electricity?
Speaker wires carry whatever level of current comes out of the amplifier. A typical 100-watt amplifier powering an 8-ohm speaker would produce about 4 amps at 30 volts, which most people would not feel. An electrician would not usually be needed to hook up speaker wires in this type of installation.
Can you run speaker wire next to each other?
There's not a safety issue involved, it's just a matter of keeping the resistance of the wire small relative to the impedance or the speaker for best sound.  Oh, yes nothing wrong with running L & R wires together.
Related Question What happens if positive and negative speaker wires touch?
How can you tell positive and negative on a speaker?
How do you know which speaker wire is positive and negative?
Colour-coding: Speaker wires are often colour-coded, which will help you remember which one is positive and which one is negative. The most common colour coding is red and black, where red is positive and black is negative.
Is 12 AWG speaker wire overkill?
The lower the gauge number, the thicker the wire. Thick wire (12 or 14 gauge) is recommended for long wire runs, high power applications, and low-impedance speakers (4 or 6 ohms). For relatively short runs (less than 50 feet) to 8 ohm speakers, 16 gauge wire will usually do just fine.
Can speaker wire start a fire?
As Bill said in post #2 , yes, it is possible, but it is unlikely. Amps have protection circuits in them and should shut down in the event of a short circuit. However, if there is a fire unrelated to the wire itself, the wire could give off toxic fumes.
Can you short out speaker wire?
A guaranteed way to make a receiver or amplifier fail is to create a short circuit by improperly connecting speaker wire to your speakers or receiver. It could be as simple as a stray strand of wire which has come loose from the binding post (on either receiver/amp or speaker) and touched the other terminal.
How do you wire house speakers?
Does speaker wire have positive and negative?
Speakers will always have two connection terminals, positive and negative, and a wire attached to each terminal. When wiring speakers, it's very important that the polarity is respected at both ends of the wiring; where they plug in at the audio system and where they're connected at the speakers.
How do you check speaker wire polarity?
How can you tell which speaker wire is positive?
What does A and B mean on speakers?
NOTE: Some A/V receivers have a Speaker A and Speaker B switch on the front panel of the unit. The Speaker A output is used for the speakers in the main room while the Speaker B output is for a second pair of speakers in another room (garage or patio, etc.).
What color speaker wire is positive?
For speakers that have wires with colors, typically, the positive wire is red and the negative wire is black.
Does polarity matter for speakers?
Speakers don't have a required polarity. Either way will work. Where it matters is if you have more than one speaker: then you want them all hooked up With the same polarity.
Which speaker wire is red?
The positive speaker terminal (red) on the receiver or amplifier must be connected to the positive terminal on the speakers, and the same applies to the negative terminals on all the equipment. Technically, the color or labeling of the wires doesn't matter as long as all the terminals match up.
Which speaker wire is left and right?
The first two conductors are used for the first speaker because two-conductor speaker wire typically contains a black and red conductor, with the Black being Negative (-) and the Red as Positive (+). People normally do a lot of things from left to right, therefore the left is typically chosen as the Left side.
Which wires are positive and negative?
Positive - The wire for the positive current is red. Negative - The wire for the negative current is black. Ground - The ground wire (if present) will be white or grey.
Can I mix 12 gauge and 14 gauge wire?
It's perfectly safe to use it. Don't worry about confusing future workers. If they want to add something to the circuit, they will have to go turn off the circuit breaker first, and then they will see they are working with a 15 amp circuit.
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 100 ft of the amplifier), 16-gauge lamp cord is fine. For speakers 100 to 200 ft. It would take miles of speaker wire to hear any difference.
Can speaker cable be too thick?
The thickness of a speaker wire is determined by the diameter of the inner cables and not that of the surrounding insulation. The thickness of speaker wires can range from 12 – 18 gauge. This number range is known as its American Wire Gauge (AWG) number.
How many volts can speaker wire carry?
Hence, pretty much any speaker wire can handle 12v power. The only factor to consider is that the wattage it will produce will change, and you will have to match that wattage with the electrical device you wish to use, with that speaker wire.
Are speaker wires hot?
Speaker wire is low voltage. Yes, a meter would tell if they were actually hot, but it surely would say no here anyway. If you are truly paranoid, then feel free to put wire nuts on them, or even easier is electrical tape. It can't hurt.
What is the voltage of speaker wire?
The voltage on a speaker wire depends on amplifier power; for a 100-watt-per-channel amplifier, the voltage will be about 30 volts RMS. At such voltage, a 1 percent loss will occur at 3,000 ohms or less of capacitive reactance.
How can you tell if speaker wire is shorted?
Switch the meter to the "ohm" setting. Attach each of the voltmeter probes to a wire lead at the untwisted end. If the wire has continuity, the meter should show a reading between 2 and 8 ohms. If the meter reads zero, there is a short or break in the wire.
What happens if you short speaker wire?
This short circuit could cause the battery to explode. Short circuits are also potentially damaging to home audio speakers. A short circuit on a loudspeaker occurs if any metal object connects the positive and negative terminals together.
How do you fix a shorted speaker wire?
Why does my speaker wire have 4 wires?
So, why do speakers have 4 terminals? Speakers have 4 terminals to allow for bi-wiring connections. Speakers with 4 terminals offer split connections, which creates two sections. Compared to speakers that have 2 terminals, the varieties that have 4 are capable of bi-wiring.
How do I run speaker wire?
How do you hook up one stereo speaker?
How do I know which speaker wire is positive and negative on a multimeter?
Is white speaker wire positive or negative?
Black and white are used all the time in household wiring, and in that case the black is always connected to hot, white to ground. While there is technically no positive or negative with A/C, if that standard is applied then you can expect the black to be positive (hot) , the white negative (ground to amp chassis).
Is Green speaker wire positive?
The color code for four-conductor wire is speaker one: Red (positive), Black (negative) speaker two: White (positive), Green (negative). Its purpose is to carry an electrical signal (voltage and current) from the amplifier (or the amplifier section of a receiver) to the speakers.