Snail horn can be said to be a device that is frequently used during car driving. Its sound quality is relatively good, and it sounds very stable, so it has been loved by many people. Although many people are using this type of speaker, few know what measures can effectively prevent electromagnetic interference from snail speakers. Based on this question, the technicians of Snail Horn have compiled the following relevant answers for everyone.

1、 The main prevention and control measures for electromagnetic interference of snail horn:
1. Pay attention to the installation method of the power transformer:
The car snail horn adopts a high-quality power transformer, try to widen the distance between the transformer and the PCB, adjust the position between the transformer and the PCB, and keep the transformer and amplifier sensitive end (input end) as far away as possible; The interference intensity of EI type power transformers varies in different directions. It is important to avoid aligning the Y-axis direction with the strongest interference intensity with the PCB as much as possible.
2. Metal casing must be grounded:
For power amplifiers, products with design specifications have an independent grounding point on the chassis. The grounding point for Cangzhou car snail speakers is actually reduced by the electromagnetic shielding effect of the chassis to minimize external interference; For common active speakers, the metal panel that also serves as a heat sink needs to be grounded; The casing of the volume and tone potentiometer should be grounded as much as possible if conditions permit. Practice has proven that this measure is very effective in reducing input impedance for PCBs operating in harsh electromagnetic environments.
The selection of snail speakers is different from home use, with the first two channels focusing on high and mid tones. If the bass in front is too heavy, it will affect the driver's mood, especially during long-distance driving, which can be very frustrating. Two rear channel side heavy bass. This is also the reason why installing a subwoofer and amplifier results in high power for the rear speakers.
2、 The working principle of Weishan snail horn:
When the horn button on the steering wheel or elsewhere is pressed, the current from the battery will flow through the circuit to the electromagnetic coil of the horn relay. The electromagnetic coil will attract the dynamic contact switch of the relay to close, and the current will flow to the horn. The current causes the electromagnet inside the horn to work, causing the diaphragm to vibrate and produce sound.
That's all for today's sharing about the snail horn. I hope it's helpful to you. If you have any further questions, you can log in to our official website to contact our staff, or leave a message directly in the station. Our staff will definitely answer all your questions in a timely manner. Thank you for reading.