Do you know what subwoofers, active speakers, and passive speakers mean?

                 Do you know what subwoofers, active speakers, and passive speakers mean?

If you want to create a home theater effect with background music in your home, then a subwoofer is essential. Because the soul of the theater is the subwoofer. The heart of the theater is the power amplifier, the wires are the muscles and bones, and the blood is the content of the film source. Sound is composed of high frequency, middle frequency and low frequency. Each speaker is responsible for the corresponding frequency response. The frequency response and low frequency of each speaker are not enough, and any sound has low frequency, so in the theater, the subwoofer plays back the bass of all channels, and the effect can be shocking only if there is a subwoofer. Without a subwoofer, it is not called a theater. Just call the sound.

1. Subwoofer is a common name or abbreviation for everyone. Strictly speaking, it should be: subwoofer.

2. The role is mainly divided into two aspects:

(1) pitch

It mainly depends on the frequency, but also on the intensity of the sound. The human ear responds to high-frequency sounds as high-pitched sounds and low-frequency sounds as low-pitched sounds. The variation of pitch with frequency (Hz) is basically logarithmic. Different musical instruments play notes of the same frequency, although their timbres are different, but their tones are the same, that is, the fundamental frequency of the playing sound is the same.

(2) Timbre

Different instruments can have very different timbres when they produce the same pitch. This is because their fundamental frequencies are the same, but their harmonic components are quite different. Therefore, the timbre not only depends on the fundamental frequency, but also is closely related to the harmonics that are integral multiples of the fundamental frequency, which makes each instrument and each person have a different timbre.

Super bass, if you want to hear it with human ears, it is extremely limited, but it can be felt by other senses of people, it is a shocking feeling! The subwoofer is to bring you this kind of feeling, which can make you immersive and shocking, and you can feel your heart beating following the plot of the movie.

Turn right to the subwoofer output interface of the main unit, which is our BASS OUT interface, which is connected with a shielded audio cable. Xiaoyou posted a video last time. If you need it, you can go to the audio cable interface. The wiring method of audio output and input is the same. [Video] Wiring instructions for turning right to smart background music.

So what is an active speaker?

Active speakers refer to a type of speakers that are equipped with self-equipped power amplifiers inside the speakers. These power amplifiers are specially used to drive the speakers in the speakers. Due to the special matching design, these power amplifiers can be better used to drive the speakers in the speakers, so that users do not need to consider how much power the power amplifiers have. And whether the impedance matches and so on.

So what is a passive speaker?

Passive speakers are also called "passive speakers". Passive speakers are ordinary speakers that we usually use without power amplifier circuits inside. Although passive speakers do not have amplifiers, they often have crossover networks and impedance compensation circuits. Passive speakers are generally marked with parameters such as impedance, power, and frequency range.