For car audio purposes, your stereo will send a signal to its preamplifier this can be the radio signal, CD player, or smartphone. Then the preamp will send the signal to its built-in amplifier if it has one or out to the external aftermarket amplifier.
Hence you can not just use a preamp for any sound whatsoever. You might be wondering why you need an amplifier if your standard OEM factory stereo can play music without the need for one. Head units do have an amplifier built into them; otherwise, you would not be able to hear your music because you need an amplifier to push a line-level signal through your speakers to create volume. In fact, some high-end vehicles even come with factory-installed external amplifiers to power advanced sound systems.
However, if your car does not come with a powered OEM stereo amplifier, you may need to consider getting yourself an aftermarket one for these reasons. The most prominent feature of an amplifier is that you can increase volume without incurring any distortion. If you enjoy cranking up the volume and you need to hold back because, at a certain volume level, all you hear is loud distortion, then an amplifier would suit you well. A professionally built aftermarket amplifier will produce clean, high-quality sound in addition to volume.
It can produce clean, high-quality sound due to the fact that it has no limitations when it is built, unlike the amplifier that has to be housed in your car stereo. With proper components and distinctive design, it gives your speakers room to breathe, creating adequate headroom.
This means that your speakers work less and at the same time produce better quality sound. Standard OEM factory speakers and amplifiers usually leave the assembly line having 10 to 15 watts of power unless, as I mentioned, it is some luxury car. If you intend to purchase aftermarket speakers, their power and efficiency rating will be much higher than standard OEM factory speakers in the hundreds and even thousands of watts.
The amplifier in your stereo will not have the power, not to mention the capability of handling aftermarket speakers. There will be no clarity, no depth in the audio, no proper frequency response, and low volume. These are just a few problems you will be plagued with if you choose to run influential aftermarket speakers from your car stereo without an amplifier. Amplifiers nowadays have built-in crossovers that function as a high-pass filter allowing frequencies that only the subwoofer should receive.
In addition to this, your car stereo that is pumping out 15 watts peak RMS will just not have the power to drive a subwoofer, which is hundreds of watts. Not to mention that your stereo most probably does not have a dedicated subchannel or a crossover built into it. This would mean if you actually do hook your subwoofer up to your stereo via a standard channel not recommended , the sound that would follow would be detrimental to anyone who is listening.
For example if you have a 4 channel amp, channels 1 and 2 are used to power your left and right speakers, channels 3 and 4 are bridged to power a subwoofer. Note: Not all amplifiers are capable of bridging. Audio Filters: Filters are an electronic device that can be found within amplifiers that control what frequencies are sent to your speakers.
This is extremely helpful because they allow you to fine tune your amplifier to your speaker selection and your vehicle. Filters are available in both Fixed and Variable. A Fixed Filter is a filter that has only has one setting that is predetermined by the manufacturer. A Variable Filter allows you to adjust the setting of which frequencies are affected by the filter. Adjustable Input Level: This function allows you to boost or cut the signal that is sent to your amplifier from your car stereo.
This helps you dial-in the input signal strength to your amp to help minimize distortion within your unit. Adjustable Output Level: This provides control over the signal strength that the amplifier sends to the speakers, to ensure that your speakers are not inadvertently overdriven and protects the amplifier from distorting or overheating. Some of these tones may never be heard individually but when they are combined with the original audio of a recording, it breathes new life into the recording, offering more depth and ambiance.
Speaker Level Inputs: Enable you to use the speaker outputs from your car stereo to send signals to the amplifier. This is especially helpful when you do not have line level outputs RCA on your car receiver. Although there are many different classes of audio amplifiers, only a handful of amp classes are commonly used in the world of car audio.
Without going into a lengthy explanation on the physics of how each amp class works, it is much easier to understand the pros and cons of each amp class. Listed below are the most prevalent amplifier classes used within the industry. Class A: An analog amplifier. Mainly used in higher end car audio installs. Not commonly found in car audio.
Class D: Digital amplifier. The most common amplification found in car audio. This type of amplifier generates a fair amount of crossover distortion. In order to minimize the effect of the distortion, the audio quality may suffer, depending on the make and model of the amplifier.
Amplifiers come in many configurations. You can purchase a car amplifier from local car audio shops, internet outlets such as Amazon and eBay, or big stores. Before buying an amplifier, it is always important that you the different types of amplifiers available in the market. Most important, you should know the right kind of amplifier best for your vehicle.
Purchasing a perfect amplifier may be overwhelming considering that they are a variety of amplifiers in the market today.
The following are some of the factors you need to consider before settling on the best amplifier. Car amplifiers are usually categorized based on their ratings. The following table shows the different classes of car amplifiers and their advantages and disadvantages.
Class AB amplifiers are the most preferred because it offers the advantages of both Class A and Class B amps without significant trade-offs. Class D amps are ideal for low-frequency sound applications. Car amplifiers featuring multiple channels are ideal for powering multiple speaker units. Fried speakers…. Buy more power than your speakers require. You will be able to keep your gains at the proper setting. This will make for better sound and lower the odds of damaging your speakers.
There are thousands of amplifiers available. Some are good, some are not. Use better judgement and the guidelines spelled out above and you will get better sound that will last for a long time. If it seems too good to be true, it probably is. As always, a professional specialist shop like Mobile Edge can give you great advice on quality product that will make sure that you enjoy every minute of your daily commute! Founder of Mobile Edge, technology geek, author, ethical businessperson, avid landscaper, CrossFit enthusiast, master of 3 very cool cats, and very happily married.
Can you give me an advice? I have a wat 2channel amp running to a couple 10inch subs at w does this mean I should be cranking up the hertz and keeping the gain down a bit? I forget the specs on my head unit. I would recommend that you find a quality shop in your area and go in and explain to them what you want. I want to add a sub. Should i get a 4, 5 channel amp? Juan, There is not a clearcut answer to your question, but I would suspect that a 5 channel amplifier would give you the most flexibility.
If you are from our area, please stop in with your speakers and let us take a look at them. We can definitely offer you some good advice. Chris, we can definitely help you. Stop in with your vehicle and let us take a look at what you need. We have quite a few 4 channel amp in stock. Now that I know that.
I have a question about the power source to my car. Could that be my alternator or what? Thank you. There is no clear cut answer to this. What you want to do first is to get your charging system checked. Even though it is a new battery, get it checked anyway along with your alternator. Once you know for sure that it is not your charging system, you can dig in to more time consuming troubleshooting. Failure to start up and run means the spark has a problem. This does not mean that you have to make do with a sub par machine, nor does it mean that you have to be content with replacing your chainsaw every few years.
Therefore, it is important to understand the difference. The truly fun part is actually customizing and building the speaker yourself. I purchased kenwood 2 way 6. The speakers watts are watts per pair and 30 watts for rms my question is can i put amplifier on this 4 speakers and what type of amp do i need. I have and option for 4 channel amplifier. Thanks in advance. I would get a MonoBlock to run the Sub and then use the 4 channel for the remaining speakers.
In my experience it is always better to have a separate Amp for the Sub and Speakers. However this can get pricey cost of a second amp and speaker wires to the sub. A solution is to look for an Active Subwoofer subwoofer with its own built in Amp , as they only require power cable and RCA cable from head unit, which makes for a convenient and easy install. Also makes for a quick and easy removal to take to your next car. I use the twin 8inch not much room in my car and its powerful enough trust me.
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