If there are multiple speakers, they sound better when connected with the same polarity. But the corresponding marking on their terminals is not always there. Then you will have to determine the polarity yourself.
Necessary
- - finger battery;
- - wires;
- - pencil;
- - screwdriver;
- - flashlight or table lamp;
- - soldering iron.
Instructions
Step 1
Before checking the polarity of the speaker, be sure to disconnect it from the amplifier. To do this, first turn off the amplifier itself. Then, if there are plug connections between it and the speaker, use them to disconnect. If there are none, the loudspeaker will have to be temporarily unsoldered, having previously recorded which wires went where.
Step 2
Check if the diffuser is visible through the grille or fabric covering it. Try to light it up with a flashlight or desk lamp - what if it becomes better visible after that? If this does not work out, you will have to open access to the diffuser in one way or another. Sometimes it is easier to remove the grille, and sometimes the speaker itself from the back. The main thing is to choose the way in which the column will not be damaged, and you can then collect everything back.
Step 3
Now you can start determining the polarity. Briefly connect a finger-type battery to the speaker with wires. The diffuser will either retract or extend outward. If it is pulled in, the battery was connected in the wrong polarity, and if it pulled out - in the correct one. Now it is enough to mark with a pencil near the speaker terminals the correct polarity, that is, the position of the "plus" and "minus", at which the diffuser is pushed out.
Step 4
If you often check the polarity of the speakers, you can make a convenient device for this by placing the battery in the holder and soldering the probes to the wires. In this case, in series with one of the probes, turn on the fuse to 0.1 A in case the probes suddenly close during transportation. When not in use, remove the battery from the holder and place it in an insulating case. It is good to take the wires in different colors, for example, black - "minus", red - "plus".
Step 5
Remove the battery and wires, put the speaker back. In this case, connect all speakers to the amplifier in the same polarity. If the amplifier is stereo, then both speakers must be connected in the same polarity. Check out how they will sound now compared to what it was before.
