The polarity of the speaker system is very important in home theater systems. This is because dealing with the phase-frequency sound produced by the speakers. Note that the ground is always connected to the negative pole of the speaker, except for the rear speakers (rear surround speakers) because there is a special circuit there.
Home theater made itself still needs to be setup for the calibration tone through the tone control on the satellite speaker power amplifier. In addition, it is also done on the volume of the subwoofer calibration and calibration in the frequency of the subwoofer for a balance in all channel speakers.

Home theater made itself can also be used for other audio devices, namely netbooks, tablet PC, Ipad, Ipod, DVD Player, MP4 Player, FM Stereo Receiver, Walkman, Stereo TV, Smartphones, mobile phones, and other gadgets.
Well, that's the explanation of all things related to home theater and other things related to home theater or home cinema. I hope this explanation of the home theater can be useful for you.
HOW TO KNOW SPEAKER POLARITY
Each audio speaker polarity poles must have what we call positive and negative speaker connection. The positive pole is marked usually no writing (+) at the connector and red. Writing negative pole is marked (-) on the connector and the color black. Indeed, there is a special tool to know his name speakers phase polarity checker. Then how simple and easy way to know the correct polarity? Here are tips that you can try.
The question is how if there are speakers and the polarity marks disappear? Or the position of the speakers are in a speaker box and we do not want to bother to unpack the box just wanted to see the polarity. Or in a car audio installation that is already installed neatly in the frame of the car. We may not be dismantled. It also accelerates the car audio installations. Since we already know the polarity.
Then why the hell should wear the polarity of all? Random mounted speaker right does not matter. Indeed, any connected speakers or alternating polarity could equally sound. If the number of speakers is just one seed does not matter. The problem if the speaker numbers there are more than one or numerous. There will be a reduction in the amount of output produced by the speakers. Audio cause was not optimal because inverted phase.
Examples there are two speakers in the box. The first installation of the speaker box polarity is correct. The second box installation of reverse polarity. What happened? The resulting sound will be added to decrease marked decrease bass sound. Please try your own. But if the installation of a second polarity is correct box. The resulting sound will increase and the marked increase bass increases.
Given the importance of the installation of the correct speaker polarity. So a mandatory requirement in an audio installation. If this is ignored guaranteed your audio will not be maximized. How to check speaker polarity requires only one batteries are still good and a little cable for connection.
First, prepare the battery and solder wires at both poles of the battery. Rub the first ends of the two poles of the battery before soldering that could lead attached. Cable wear red and black two take a little less than 30cm. Solder the red wire on the pole positive solder the battery and the black cable on the negative pole of the battery.
Both connect the battery positive cable to the positive speaker connectors and the negative battery cable to the negative speaker connector. Will sound crackle-crackle and if the polarity of the speakers is correct. Marked paper movement speaker that moves upward. This is true and used as a benchmark. Movement speaker should be above paper. So positf battery connection that is positive and negative battery speaker speaker that's negative.
If you find a speaker whose polarity marks disappear. This way you can find it quickly and easily. In car audio installation or house we live audio plug on the battery cable speaker lines. Staying we see the movement of paper speaker up or down. Then mark the cord.
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