The characteristics of car CD players
1) Small in appearance and volume.
2) Poor listening environment. A series of new technologies have been used for this car CD.
① Sound quality enhancement function.
② Sound field simulation function.
③ Select the listening position function.
④ Digital overtone enhancement technology.
⑤ Using 12V DC power supply.
⑥ Strong anti-interference ability.
⑦ Seismic technology. Including electronic shock absorbers, spring shock absorbers, shock absorbers, etc
⑧ Digital dual tuner and directional antenna.
⑨ Built in power amplifier.
⑩ Head wiring.
In addition to the above characteristics, the main engine of a car also has the ability to withstand high temperature, severe cold, exhaust gas, dust, humidity, etc., all of which are determined by the special nature of the car environment. High end car CD players can be compatible with MD and MP3, and a common task when modifying car audio is to convert VCD to CD.
Host classification - audio requirements
Classification of audio sources for pure audio source without amplifier type and common type
Pure sound source, without an amplifier, with high grade, good sound quality, and requiring other amplifiers to be used on the host. Due to its cost savings on other components and significant reduction in thermal pollution, a fever type sound source can greatly improve sound quality. Car owners who pursue excellent sound quality can first consider choosing this type of host.
A regular sound source generally refers to a regular host equipped with four power amplifiers, with power ranging from 40W-60W per channel. The RMS power (rated power) is about 10W-15W, and can drive speaker units below 40W (RMS).
Host classification - production and sales
According to production and sales, it can be divided into two types:
1) OEM is a customized product for automobile manufacturers, commonly known as original audio.
2) ODM is a major brand of automotive audio products supplied to the market for modification. The characteristic is strong personalization.
Introduction to Car CD Host Accessories:
At present, Japanese series products dominate the domestic audio console industry. Alpine, Panasonic, Sony, and others all have their own production bases in China, producing and supplying the domestic market. Most car CD hosts have an output power between 25Wx4 and 60Wx4, which refers to the power of the built-in power amplifier in the host.
It should be noted that this is the maximum output power, and reaching it only in an instant does not represent its actual output power. In theory, the higher the output power, the better, as this output directly drives the speaker.
2) Speaker
(1) The structure of the speaker
