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1. Selection of car audio wiring

The lower the resistance of the car audio cable, the less power is consumed on the cable, and the higher the efficiency of the system; The smaller the resistance of the wire, the greater the damping coefficient, and the greater the redundant oscillation of the horn. The larger the cross-sectional area (thicker) of the wire, the lower the resistance, and the larger the capacitance current value of the wire, which allows for a larger output power.

Note: Even if the wire is thick, due to the speaker itself, a certain amount of power will be lost, and the efficiency of the entire system will not reach 100%.

2. Safe selection of power supply

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The closer the secure box of the main power line is to the car battery connector, the better. The size of the secure value can be confirmed by the following formula: Secure value=(sum of the total rated power of each amplifier in the system) × 2) The average voltage of the car power supply.

3. Wiring of power cables

The current capacity value of the selected power cord should be equal to or greater than the value of the stable transistor connected to the power amplifier. If lower than standard wires are used as power lines, communication noise will occur and the sound quality will be severely damaged, and even the power lines will heat up and burn due to this.

When using a power cord to separate multiple amplifiers for power supply, the length of the wiring from the separation point to each amplifier should be as consistent as possible. When the power line is bridged, there will be a potential difference between the various amplifiers, which will cause communication noise and severely damage the sound quality. When the host is powered directly from the power supply, it reduces noise and improves sound quality.

4. Remove joint dirt and grime

Thoroughly remove the dust and dirt from the battery connector and tighten the connector. If the power connector is dirty or not tightened, there will be poor contact at the connector. The presence of resistive current can cause communication noise and severely damage sound quality. Use sandpaper and a fine file to remove dirt from the joint, while wiping with butter.

5. Avoid wiring near the generator and ignition lines

When wiring within the automotive power system, it is important to avoid wiring near the generator and ignition device, as generator and ignition noise can radiate into the power cord. When replacing the original factory installed spark plugs and spark plug cables with a more functional type, the ignition spark becomes stronger and ignition noise is more likely to occur.

6. The grounding of various audio equipment should be concentrated at one point

Concentrate the grounding of various audio equipment in the audio system at one point. If they are not grounded in one point, the potential difference between the various components of the audio system will cause noise to occur.

Attention: The host and amplifier should be separated from the ground. When the system consumes a large amount of current, the grounding terminal of the battery must be firm. The way to improve the grounding function of the power supply is to use thick diameter wires, such as twisted wires, to wire between the power supply and grounding. This can strengthen the connection, effectively suppress noise, and improve sound quality.

Article source: LED Bluetooth audio system http://www.www.zaozhijixie.net.cn/