What does RR+ RR- after CD mean?

1 and RR+ are the positive poles of the right rear horn;

2.RR- is the negative pole of the right rear horn;

3.FR+ is the anode of the right front speaker;

4.FR- is the negative pole of the right front speaker;

5.FL+ is the anode of the left front speaker;

6.FL- is the negative pole of the left front speaker;

7.RL+ is the anode of the left rear horn;

8.RL- is the negative pole of the left rear horn.

Extended data polarity identification:

The pin polarities of the speakers are relative, as long as the speakers used in the same room have the same polarity.

When using multiple speakers, it is necessary to distinguish the polarity of each speaker pin for the following reasons: When two speakers are not connected in series or in parallel with the same polarity, the current flowing through the two speakers has different directions, one from the head of the voice coil and the other from the tail of the voice coil.

In this way, when the cone of one speaker vibrates forward, the cone of the other speaker vibrates backward, the vibration phases of the two speaker cones are opposite, and part of the energy of air vibration is cancelled.

Therefore, when more than one speaker is used in the same room, it is required to be connected in series or in parallel with the same polarity, so that the vibration direction of each speaker cone is consistent.

The positive and negative poles of the two leads have been marked with "+"and "-"symbols on the wiring brackets on the back of some speakers, which can be directly identified.

Audio-visual discrimination method can be used to determine the polarity of speaker pins. Two pins of the two speakers are connected in parallel at will, connected to the output end of the power amplifier, fed with electrical signals, and the two speakers sound at the same time.

Reference Speaker _ Polarity Recognition-Baidu Encyclopedia