Car amplifiers

Car amplifiers, thanks to using active electronic components, increase the power of the audio signal from the head unit of the car audio system. The devices minimise distortions when playing music even at maximum volume.

Types of available car amplifiers

By number of channels:

• Single-channel. These produce a powerful sound of poor quality. They are often used in conjunction with a passive subwoofer. They have a low-pass filter and external volume control.
• Dual-channel. These amplifiers are intended for connecting two speakers and, sometimes, an additional woofer. When bridged, the connections provide high performance. They have low-frequency and high-frequency filters.
• Three-channel. These kinds of amplifiers are needed for a pair of speakers and a subwoofer. They often have a filter and low-frequency control.
• Four-channel. Amplifiers like these ensure the operation of a quad system or a stereo system with one or two subwoofers. They feature a channel-by-channel connection of separate speakers for better sound. They are the most popular.
• Five-channel. These amplifiers are balanced. They allow for connecting two pairs of ultra-low frequency speakers. They guarantee perfect quality of played music.
• Six-channel. These require a sound processor. They are rarely used.

By type and class of the signal:

• Analog. These include class A, B, AB, and C components. Class A devices are low power and have low efficiency. Class B devices are more powerful, but the amount of nonlinear distortion of the output increases. They are inexpensive. Class AB devices combine the sound of the first type and the power of the second one. These are the most common. Class C devices have a high sound pressure level, but the sound quality is poor.
• Digital. These are state-of-the-art and compact class D products. They have the highest efficiency level but are economical at the same time. They allow adjusting the sound frequency for each channel.

Recommendations for using car audio amplifiers

1. To avoid overheating of the device, do not cover it with floor mats. Install the device in a place with free air circulation.
2. Securely attach the device to a firm, level surface. This will help protect the electronics from vibrations.
3. Opt for a device with a rated power that is one third less than that of your standard speaker system.
4. After installation, use the equipment at low volume for the first 5 hours.
5. Protect the product from moisture. This will help prevent short circuits.

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