Do you know about Active and passive audio?

Views: 0 Author: Site Editor Publish Time: 2023-04-20 Origin: Site

Inquire

The active sound division of the audio is also called the active frequency division. The audio signal of the host is divided in the central processing unit of the host before being amplified by the power amplifier circuit. The audio signal is divided into low-frequency signal and high-frequency signal according to the frequency response range, and then the two divided signals are input into the amplifier circuit and amplified separately. The frequency division method is digital.

Passive crossover is also called passive frequency division. The audio signal is amplified by the power amplifier circuit and then divided by the passive frequency divider, and then input to the corresponding tweeter or woofer. The principle is that the high-frequency sound is filtered out by the inductance circuit, and the remaining Low-frequency sound, and then input the low-frequency sound to the low-frequency speaker. The low-frequency sound is filtered by the electrolytic capacitor to leave the high-frequency sound, and then input to the tweeter. The frequency division method is fuzzy adjusted by the variable resistor.

The active crossover must be the main unit with active frequency division function or a digital active frequency divider installed after the audio output of the main unit. Generally, the high-end models of the Alpine main unit have the active frequency division function. It is characterized by precise frequency division points, The sound is clean after frequency.

In fact, many people have used active speakers. Those small speakers for Walkmans are active speakers, that is, a set of amplifiers are added to the general speaker box. When we want to use it, we only need the front stage and no post class. The active internal adopts the electronic sound division method, and saves the trouble of matching a suitable power amplifier; the passive speaker is an ordinary speaker, and there is only a one-frequency network inside.

The active pre-stage is the pre-stage of IC, transistor, and vacuum tube that we generally see. It has an amplification effect when the input signal is output. timbre. To put it bluntly, the passive preamplifier is the simplest. It is a volume control attenuator. Its output will be smaller than the input, but the timbre rendering is less, and usually there is only a slight difference, unlike the active preamplifier. The difference is quite large.

active speaker passive speaker power amplifier tube amplifier AV receiver stereo amplifier WISA surround sound wifi multiroom speaker dolby atmos home theater

Related News

The pros and cons of active vs passive speakers.

The pros and cons of active vs passive speakers.Many people like active speakers, but they may not really understand the pros and cons of passive and active speakers. They just heard that active speakers are better, which may bring a lot of trouble to their future use. It
What exactly is "Dolby Sound"?

hat exactly is "Dolby Sound"?The word "Dolby" in "Dolby Sound" is actually the surname of Dr. Dolby (formerly R.M. Dolby) in the UK. The Dolby Laboratory established by Dr. Dolby has successively invented a number of technologies such as the Dolby Noise Reduction System and the Dolby Surround Sound
How much do you know about Dolby atmos speakers?

Dolby Atmos speaker setup reference standardSpeakers with Dolby Atmos are designed to conduct sound upwards, creating and reproducing extremely realistic overhead sound by bouncing off the ceiling. There are two versions of speakers with Dolby Atmos:Integrated units that also include traditional for
Do I Need An AV Receiver For My Home Setup?

You might wonder if an av receiver is right for your home. If you want a true home theater system with surround sound, an av receiver gives you more options than a soundbar. Many people pick av receivers for these reasons:You get immersive audio, like Dolby Atmos, using multiple speakers.You can con
AV Receiver Or AV Processor? What Are The Differences?

SectionSummaryWhat is an AV Receiver?An integrated unit that combines a tuner, preamplifier, surround sound processor, and multi-channel power amplification into a single chassis for convenience and value.What is an AV Processor?A dedicated high-end component that focuses strictly on decoding and ma
What AVR should I choose? And should I add a Power Amplifier?

SectionSummaryHow to Evaluate AV Receiver Power SpecificationsThis section explains how to interpret "Watts per Channel" and the importance of "all channels driven" ratings for true performance.The Role of Channel Counts and ProcessingA breakdown of 5.2, 7.2, and 9.2+ configurations and how the AV r
AV Receivers Buying Guide: Which One to Buy for Your Home Theater?

SectionSummaryHome Theater Receiver Buying Guide Cheat SheetA quick-reference summary of essential specifications including channel counts, HDMI standards, and power requirements for different room sizes.AV Receiver vs. Stereo ReceiverA detailed comparison highlighting the fundamental differences be
What Is a Speaker Amplifier (And Do You Need One)?

You might ask what a speaker amplifier does in your home theater. It gives power to your speakers. This makes the sound louder and clearer. Most people use a receiver for this job. A receiver also handles video and other things. Some people say a home theater amplifier gives better and stronger soun