Amp Smarts:
Amplifiers are devices that take a tiny audio signal and a pre-amp, a power from your battery, and it indicates to drive like a big big audio signal to the speakers.
The most important advice I can give you is to buy a lot of power. To get the cleanest sound, it is absolutely necessary to buy as much energy as you can afford it.
Here are some terms you will need is to know when evaluating car audio amplifiers.
Watt: A watt is a measurement of thePower. Power is the ability to perform work. In the case of amplifiers, the work is moving to a loudspeaker. Amplifiers come in all power ranges from 20 watts per channel up to thousands per channel. When it comes to amplifiers, watts are described two ways:
RMS: An amp of power might say: 75W RMS x 4 CH @ 4Ω 14.4
This means that the amplifier with 75 watts into 4 channels with 4 ohm speakers is capable of 14.4 V and the voltage. The amp is capable of providing that power if all theseConditions are met at all times. The truth is, even if you do not meet your system design to all these conditions, it is not at all times. Impedences Speakers' (measured in ohms, or Ω) change constantly while operating. Amps do not necessarilly put out the same power all the time either, if for example a bass track is playing against a much quieter track.
When you buy a AMP, LOOK AT IT'S POWER RATING as a marker for AMP'S ABILITY TO YOUR PLACE, probably PUT OUT AT ALLTIMES.
However, I must also say that an amplifier's RMS rating of a piece of information to try to determine with an amplifier to power.
CEA Compliant Power: This is (hopefully) will be the industry standard for determining a power amplifier. So you can accurately compare two amps to each other, because you know that they have been tested under the same conditions. To know why this is a good thing, click here …
MAX:
Directly under RMS amp's rating, you willamplifier will see a "MAX" rating. It is often double the RMS rating. The MAX rating is pure junk. Never pay attention to the maximum rating because it only shows what the amp able to set in a laboratory. This type of environment can not be reproduced in the automobile, and therefore an assessment is misleading. An amplifier rating max proably about 50% more than the RMS. Never buy an amplifier on it max rating. Ok, and finally, because that makes you look like a total jerk, never ever say your ampA 1,000-watt amplifier, because it is a 1000 watt max sticker on, and especially if you've purchased your amp at the swap meet. 1000-watt amplifiers are big and heavy.
Anyway, in sum, never buy an amp on it MAX rating.
CEA Compliant Power:) (CEA = Consumer Electronics Association this specification (if your amp it contains) is a new assessment. The objectives of this evaluation are to provide a useful reference for amp comparison. In the "bad old days" could assert amp manufacturers, fairly independentPerformance they wanted without specifying the test procedures. The CEA rating changes. The CEA compliant power indicates how much power you can expect, if the following criteria are met: 14.4V, 4 Ohm speakers and 1% distortion. You can now fairly compare two amplifiers for each other because you know that they tested in the same way. Sense? No? OK, look at it this way: If an amp has a CEA compliant output power of 100 watts per channel, you know that the amplifieressentially equal to another amp with the same CEA rating. You can not compare this amp to another amp that is rated at 100 watts / channel RMS.
I am a big fan of this evaluation. Finally, there is a uniform standard for amplifier power output ratings. If an amplifier does not contain this specification, the manufacturer probably trying to hide something.
Bridging: Many stereo and 4-channel amplifier, you can "bridge". What do you do to unite bridging two channels in one or fourChannels into two parts. This allows you to allocate more power for a speaker, such as a subwoofer. This is a handy feature for someone who has a stereo amp lying around, but they all want to use his power to a single speaker drive. There is nothing wrong with bridging, and is often used for subwoofers.
Crossover: Many amps have a simple crossover built in. Basically, it is a switch that has three positions: high pass, low pass, off. Highpass can basically allto pass on higher frequencies. This is handy if the amplifier is the driving force tweeters and mids. The low-pass can be reproduced only the lower frequencies. This is useful when the amplifier a subwoofer is the driving force. Off means that all frequencies are sent to the speaker.
Bass Boost: Some amps have a circuit that is switched on when a boost to your bass. It is not essential, and I do not normally use it in my own system.
Frequency Response: This specification tells you what frequenciesthe amplifier is responding. Higher frequencies are treble, lower frequencies are bass. The human ear can perceive, from 20 Hz to 20,000 Hz (aka 20 kHz). Most amps can reproduce this frequency band with ease. Some go beyond that. Do not worry, because CDs usually contain any data from this area, and even if they did, they would not listen! Some people talk about harmonics, and I do not know if it's true or not. But whateva. Read more about this debate elsewhere.
Channel: Amps haveChannels, which basically say how many consumers are going to build it. Loads = speakers, so a two-channel amplifiers will power two speakers.
Classes:
Different amplifiers have different designs) to reach all the same (extension of a musical signal to achieve this, but in different ways. The manner in which the amplifier is intended to be referred to as their "class". There are 4 main types of classes, and an occasional oddball. I really do not know the technical differences between them, but itdoes not matter. We're just installing amps, not designing them!
A – Very good sound quality, very inefficient, uses boatloads of power, and waste most of it in the form of heat.
B – Good sound quality, moderately efficient, consumes a lot of energy, waste, about half of them in the form of heat. Some "crossover distortion" present
A / B – Combination of classes A and B. In small quantities used in the Class A portion of the amp. At higher volumes, uses the class B portion of theamp.
D – So-so sound quality (but reproduces bass very well), highly efficient, uses minimal power, wastes very little about.
Other classes: Whatever. They exist. I do not know if they sound better. Their ears are the best judge.
THD: This stands for "Distortion", but the D is all you need to take. Obviously, the lower the number the better. You do not want your amps producing distortion and sending it to your speakers! It causes noise andSpeaker damage. The experts say that a THD rating below 0.1% is inaudible, meaning you may not have noticed. But remember that distortion travels through all components, and is reinforced by everyone. Thus, amplifiers with low distortion, and other high distortion products in your system to reproduce distortion.
S / N Ratio: A measure of how an amplifier silence backround noise. This specification is measured in dB, and the higher the S / N ratio, the cleaner your sound.
Speaker Inputs: This featureYou can send the amplifier to your system through speaker cable (instead of RCA) connecting cable. This function is useful when you add an amplifier to your factory stereo system want.
Preamp Outputs: This feature allows you to deliver an RCA cable to the amplifier to connect to a second amp with the musical signal. This feature is handy if you have a second amp amplifier without a cable all the way from the head unit to want to add. In addition, it allows you to import an additional power amp to a head unit to add that can only haveA set of RCA pre-outs.
Bass Remote Control: This feature allows you to the bass output of the amplifier, without controlling them to adapt to the amplifier. You can control where the assembly is clever, and adjust the bass remote.
HOW IS THE AMP is most appropriate for your system:
How many channels your system?
How to hook up those channels.
Features you want
Crossover:
Inputs:
Speaker (hi level)
RCA pre-amp (loLevel)
How many channels do you want to go? We have already discussed the areas of hi-fi equipment, so you need to, how many speakers you decide to drive. Suppose you want to build an intermediate system with 6 speakers. They appreciate you all step 6 of this with a "real" amp. You can go a few ways: you can buy a 6-channel amplifier-amplifier or a 5-channel, and power your entire system. That makes life easy if you keep the installation simple and clean like. You can also use your powerSpeakers with multiple amps: One mono, a 4-channel, you might even three stereo amplifiers. If you wish, you can really feel like you could bi-amp your component speakers, which include your amp to 3, 4 a.m. to 5 p.m. amps!
One way that you can be creative with the installation will be bridged by. If you use the power of 2 or more boats on a stereo amplifier, you can bridge, or combine the two channels into one. From there you can get your boats in parallel or in series wire to the proper ohm load. It isan easy way to several speakers on an amplifier output.
To save money, you can always refrain from installing to an amplifier for the rear speakers. I have often times just power them from the display unit. When I listen to music without rear passengers, I can only send the display unit to the front, faded and left me with the amplified front speakers.
You need an amplifier to have a crossover?
Crossovers come in handy when you are switching subwoofer. Most amps can reproduce the full range of human hearing.If we are to install subs but we only want them to reproduce bass. If the amplifier has a crossover, you can turn it on, and essentially tell the amp to only send bass to the subwoofer. Since the subs can reproduce only reproduce bass, why have the amp waste energy sending the subwoofers are not frequecies can? LUNACY I tell ya!
Inputs
Spokesman: This is a high-level inputs because the signal has already increased greatly. Get an amp with high-level inputs if you have an amplifier with the integrationa factory ECU.
RCA: This will be a low-level inputs because the signal is strongly enhanced. These inputs are RCA-style and are preferred because they produce less noise. This is the best option if you use an aftermarket head unit.
So, now you're really educated about amps. Do not worry. You can thank us later!
Ehrlich AEB
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