Choose a car audio amplifier for speakers

When you spend a lot of time in the car, you try to create a comfortable atmosphere in the cabin. One of the conditions is a good audio system. To improve its performance, install amplifiers. We will consider the design of this device, give recommendations of choice and advise what you should pay attention to.

Purpose and Technical Parameters

The main purpose of the amplifier is to improve the sound quality and increase the volume. This can be obtained by increasing the current strength of the audio system, so that the speakers can produce a clear and strong sound. Some acoustics, mainly premium, equipped with built-in amplifiers. However, their power is not enough to get high-quality sound.

Car Amplifiers may have a different number of channels, depending on the speakers and subwoofers being connected. There are analog models with low power, high efficiency, but insufficient quality.

The main characteristics of the devices are the output power, the range of frequencies emitted. Choose the first indicator with a small margin. 75-100 watts are enough for speakers, 100-300 watts for subwoofers.

Selection Criteria

Class . Depending on the level of signal distortion and efficiency, the amplifiers for cars are divided into the following classes:

• A -low efficiency. Give a good sound with the lowest distortion parameter. However, they consume a lot of electricity. Such models are rarely chosen, since they have little power and are very noisy in operation.
• B is more powerful than previous devices, but produces a more distorted sound. They are distinguished by improved thermal stability and high efficiency.
• С -they are distinguished by high efficiency (75%). But with them it turns out a distorted signal. Note that they are not suitable for Hi-Fi acoustics.
• A/B -something between A and B, respectively, and universal. They have an average power level, have a good indicator of efficiency.
• D -digital devices: compact and powerful models capable of delivering clear sound.

The most popular A/B class amplifiers.

Number of channels . Amplifiers can have up to 6 channels and each is designed for a specific purpose. Read more:

• Monoblock . Required for subwoofer in case of low impedance loads. If your subwoofer is designed for a load of more than 4 ohms., Then you need to use a two-channel amplifier. Monoblocks are often equipped with a crossover with low frequencies.
• Dual Channel : 2 speakers or 1 subwoofer. The connection is made via a bridge circuit or, if there is enough power, then a coil.
• Three-channel : 2 speakers + 1 subwoofer. They are rarely used, since there is a possibility of bridge connection in four-channel ones.
• Four Channel : 4 speakers, 2 speakers + 2 subwoofers, 2 subwoofers.
• Five-Channel : 4 speakers + 1 subwoofer.
• Six-channel is practically not used, because there are very few models that require 6 channels.

Amplifier Power . This parameter is the main selection criterion. Immediately determine that the power is:

• rated: power at 1% distortion;
• maximum: channel power without distortion.

Consider the first indicator. Maximum power is more likely the merit of marketers who want to attract buyers with high numbers.

When choosing, consider the following:

• crossover presence-high and low pass filter;
• fan;
• availability of a remote volume control;;

Note that quality is important for acoustics, and power for a subwoofer.

Popular Amplifier Ratings

Focal Auditor AP-4340

Features:

• rated power-70 watts per channel;
• 4 channels;
• compact size;
• protection against circuit, overheating, reverse polarity.

This is a 4-channel class AB amplifier and can be used in three modes: 4, 3 or 2 channels. In 4-channel mode, its rated power is 4x70 W, this allows you to get the most out of the sets of speakers installed in front and behind.

Alpine PMX-F640

Features:

• rated power-50 watts per channel;
• 4 channels;
• compact size and stylish design;
• stepped bass boost;
• filter with a high cutoff slope;
• high-quality components.

This is a four-channel amplifier with improved short circuit protection. You can connect another device using a bridge wiring. No overheating protection.

Mosconi Gladen AS 100.4

Features:

• rated power-100 watts per channel;
• 4 channels;
• elegant simple design;
• maximum convenience for the most complex installations;
• high quality sound;

Class A/B amplifier was the best in many ratings. Equipped with external modules that allow you to change the characteristics of the device. All of them are full-fledged filters with all the necessary mechanisms.

automotive amplifiers on 130.com.ua with delivery to Kharkov, Odessa, Kiev and in Ukraine.

Related Content: