1, the sense of loudness - the minimum demand for the original car audio performance improvement, the most direct way to improve the loudness is to change the speaker with better quality • Sound is a system consisting of: audio source (such as CD host), power amplifier (power amplifier), speaker (also called speaker, or speaker), audio accessories (wire, decoder, EQ, audio processor, High to low, etc.). The sound is used to "listen", and the ear feels "beauty". Loudness is the basis of the sound "beauty" - sound and sound, there is no "sound" without "sound", so it can't talk about "beauty"! The standard of the original car audio is aimed at the sound quality of the radio, and the signal-to-noise ratio of the radio is 60dB (63, 65, 68); the IEC has a signal-to-noise ratio of 80dB for the power amplifier. The preamplifier is 63dB), it can be seen that the sound quality of the radio is inherently "weak" in terms of theoretical requirements. Signal-to-Noise Ratio (S/N): is the ratio of the music signal to the noise in the audio electronic equipment (difference - the effective signal is "how much" dB larger than the noise - the unit is "decibel dB"). The greater the signal-to-noise ratio, the better the sound quietness of the sound system (compared with the feeling of listening to music in a noisy environment). The original car host is a complex: radio, CD/DVD playback, multimedia format audio/video playback, and its own power amplifier (combined; 2/4 channel X15W). The problem of the horn: the original car horn, for the purpose of controlling the cost, basically choose some products with very good sound performance, with the goal of "sounding", the effective power is also very small (mostly around 10-15W); The pursuit of high loudness under low power, the sensitivity is extremely high (more than 90dB, or even higher). The sensitivity is high, although the horn sounds louder, but the sound is not full, thick, and without texture. 2. Bass sense - the primary goal of car audio conversion Speaker (size) size: The original car horn, mostly using a full-range 6.5-inch caliber, this horn can only produce a sound that can barely listen to the mid-range sound, roughly above 100Hz, below 10kHz. The part below 100 Hz which mainly determines the sense of power and the sense of envelopment of the sound is hard to be emitted. The bass effect is one of the most easily perceptible parts of our sound evaluation. If you want to get a satisfactory bass, you need to add a large-diameter speaker in the car audio system, such as 8 inches, 10 inches, 12 inches, etc. Size speaker. Adding a "subwoofer" is currently the most common way to increase bass. Subwoofers are not synonymous with "garbage", but products in this category are relatively mature and relatively easy to manufacture, so the competition is more powerful, so a large number of suppliers offer a lot of cheap goods, resulting in worse and worse materials, more and more expensive prices. Cheap, the effect is getting worse – the law of value is at work. Recommend a few professional-grade subwoofers for your reference In general, a better bass, subwoofer system is made up of units of 10 inches or more, installed in a T-box, powered by an additional power amplifier (analog or digital). However, the enhancement of the bass and subwoofer effects can be achieved not only by the increase of the large-diameter unit, but also by the strength of the woofer in the front sound field. The stronger the low-frequency replay capability, the overall bass effect and the sound field advancement in the sound field. The easier it is to achieve. The bass should not only have "loudness" but also "quality" - a perfect subwoofer system in harmony with the entire car audio system. If you need more dynamic bass vibration, you need to install a large audio capacitor in the car to play a good role. 3. Height sense - the necessary stage of car audio modification The sound field is highly--for most of the modern multi-track recordings, the post-mixing engineer who makes the record master will adjust the sound field so that the listener can get a good sound field space, that is, the width and depth of the sound field. And height. Therefore, we should be able to hear the normal performance height in the car, so that we have a good sound field comfort. The sound field height of the car audio should be above the instrument panel. This is the reason why the tweeter unit is above the instrument panel, such as the "A-pillar" and the left and right "triangle" positions. After the original speaker's full-range single speaker becomes a 2-way set speaker, the sound quality effect will be better because the tweeter and the mid-woofer are separately responsible for the frequency part that is more suitable for their own play. Different sets of speakers, the feelings that should be brought to us should be different - good quality speakers, when we listen to music, we almost never notice that the speakers are making sounds - if your sound system makes you always notice which one The horn is making a sound, and the sensation of the horn of the horn may be poor, and the quality level will not be too high. • The popular original car horn “lossless replacementâ€, if you match the system according to the original design requirements, you can get a good sound that you expect; if you only pay attention to “enhance powerâ€, “improve sensitivityâ€, etc. The details, without paying attention to the overall requirements of the host system for the speaker system, will not be high for the subjective listening evaluation of the system. The modification of the A-pillar only represents the level of your mold-cutting process, and it does not mean that the sound field will be correct and the sound will be good--correct positioning and phase distortion reduction, which is the true meaning of the two-way speaker system modification. 4, the sound quality - car audio conversion advanced enjoyment At this stage, we can say that we are entering the threshold of “fever†– “feverâ€, it can be just a pair of trebles, or a better host for changing channels, of course, plus a better amplifier. It is also one of the means of pursuing sound quality. According to the current market average, the price of about 1W can be adjusted to meet the needs of enthusiasts in a balanced manner. Hosts, wires, amplifiers, speakers, capacitors, soundproofing, etc. can be used. The sound quality is generally affected. Controlled. For improving sound quality, the solution of the back door plus coaxial speaker is not advisable. Under what circumstances should we increase the large capacitance? Can a system that listens to vocals dominate and a system that listens to symphony and so on? • What is the “fried†bomber? 5, a sexy - higher pursuit of car audio conversion • The ultimate in audio fever is the uncompromising pursuit of sound perfection (Hi-End). • Different personal habits and cultural backgrounds make our appreciation of the sound full of wonderful preferences: especially like one or a certain type of singer (not idol pursuit); especially like a certain type of music or instrument; And so on... • • Audio equipment is a compromise product that cannot replay all the music or sound in all frequency bands without any deviation – low frequency, medium frequency, high frequency; resonance, overtone, scene; speed Feelings, power sense; clarity and fullness; sweetness and thickness of sound; etc. • Passively changing the active crossover method is the change from “fever†to “personality†– active three-way system matching, Bringing a series of new problems, of course, also means better returns. • • System matching should be based on the overall balance, looking for the customer's listening preferences, and achieve it!
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