The Usages for the Car Audio Equipment We Want
The Usages for the Car Audio Equipment We Want
The car audio equipments include four parts such as head unit, amplifiers, main speakers and subwoofer. The main one also includes some small units, for head unit, such as DVD, MP3 viewing screen, 5.1, Dolby Pro Logic 2 (DPL-2), digital out, CD/DVD changer control, XM, satellite navigation, quality, sound, and usability; for the amplifiers, such as power, power generation, quality, sound, crossovers and inputs; for main speakers, such as listen to the store, size, quantity, placement and rear fill; for subwoofer, such as size, power, enclosure, bass, for a given and others. Here as the followings I will give you the list about the usages for the car audio equipment we want.
Firstly: about the head unit. We want to listen to the DVDS and want to be able to watch (passenger only) when we are driving a car, that is important. For the mp3 player, we can play CD-Rs for keep the boring away. View screen often is being installed in the two seat roadster, so there is no back seat, it has to be able retract into the head unit. The head unit can output 5.1 (DTS and DD), or decode it internally. And it has to be DPL-2 capable (external processor). We often plan on running a digital signal to the external processor, bypassing all the possible noise issues RCA connections can expose. For CD/DVD changer control, there is little room upfront for a multi-CD case, so changer control is a must. If you have a long trip, the satellite radio is a really neat feature as you never drive out of range of the transmitter. Maybe we do not use it at once but for the capability. We want a head unit capable of controlling a slave navigation unit; it is a hot feature now as the car audio equipment for us. For the quality, we want the head unit to have an S/N of at least 105db for CD and a THD no more than 0.01%. For the sound, we need to listen to the unit in the store for partnered with the amplifiers you will be using. For the car, the usability is very important for it can save you so much time to find your diving track.
Secondly: about the amplifiers. We want the car audio amplifiers to be specified as power into 4 Ohms as the speakers are usually 4 Ohms according to the relatively limited voltage (12v-14v) coming from the car battery. For the power generation, we want an amplifier that will make its rated power at 12V, many amplifiers make 50% less power when the car is not running, which results in a drastic change to how your music sounds. For the quality, we want an amplifier that is neutral, the signal to noise should be equal to or better than the head unit with a maximum of 0.01% at rated output, but if it is the sound you can listen in the store. You should have it with speaker level inputs or built-in crossovers.
Thirdly: about the main speakers. You should take care of the main speakers in the store, and for the size, you can fit the largest speaker in the front door as it brings the mid-bass closer and gives the better clarity. For the quantity, you can get a 2-way or 3-way for your usage. The placement is the same as the quantity choice. Don't spend for your rear fill speaker; it makes some trouble for you.
Fourthly: about the subwoofer. For the size, a single 10" or 12" driver will be more than enough for 90% of us. For the power, you should make sure you can listen at a power level. For the enclosure, I recommend the drivers to get a sealed one rather than a ported one. And the bass is also known as the enclosures, due to the damped nature of a sealed enclosure, the sealed design lends itself to lower extension with more cone control below that F3 point.
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