automotive topics, like no other, especially close to most of the male population of our vast country.Many of us spend a lot of time and money, bringing his "iron friend" to the maximum possible perfection.This is especially true when it comes to car music and acoustics.In addition, we always want to try to somehow save by making at least part of the work with their own hands.Moreover, all ever do something for the first time.But once again we remind you that the best is still to measure seven times before you do something.This approach will save you a lot of time and money.
Today we talk about how to connect the amplifier to the car.We believe that this issue will be of interest to you.
assume that you have already not only to choose the right model, but also make room for installation in your car.Now we have to do a good wiring for powering the amplifier, and then connect it to the acoustics and prokinut cable to the radio itself.However, let's talk about everything in more detail.
powered amplifier
Members that first encounter with the car sound are struck to the core thickness of the wires, which are rarely found in everyday life (well, unless you are used to using in their work welders or somethinglike - then this option you will not be surprised).
Contrary to popular belief, amplifiers consume current from the onboard network decent value.Thus, the four-channel unit with 50 watts per channel will consume almost 17 A. Not bad, is not it?Of course, the liner will have the power to use wire with a really large cross section.So before you connect the amplifier to the car, visit the specialty shops.
Classic version
We analyze classical wiring.In this case, the wiring cling directly to the vehicle battery.It is no secret that in most cases the battery is under the hood, while the amplifier is located inside the car.Accordingly, the positive cable is practically through the entire interior of the car.Therefore it is essential to protect the wiring using high-quality fuse, and it should have no more than 30 cm from the battery.
So before you connect the amplifier to the car, and even visit an electronics store and buy a normal fuse.
little about insulation
Also, do not forget to further insulate the cable, as from 17 A to be trifled with.Especially be careful to protect the space between the engine compartment and the interior, as the cable there is often frays.As a rule, there is a rubber gasket, but there are exceptions.If it does not hurt to use a plastic sleeve made of durable plastic and thick enough.Responsible approach to this issue, since it allows getting frayed cables bare metal body is clearly not worth it!
wire around the cabin also need to pull, not allowing it to penetrate the movable part.There were times when people prokidyval cable under the seat slide.To what consequences this may result, you can come up with themselves.Since the amplifier is connected in the car?
Select cable
not forget the golden rule: the smaller joints, the safety of the above!The abundance of wires with different cross-section is fraught with high energy losses, and from the point of view of fire safety it does not look the best way.
In addition, the section minus wires must be equal to that of the positive cable.The current network is one, its value is constant.If the wires will have different section they will overheat, which again is fraught with fire in the car.
Again, that thin cords - a high resistance.In no case do not skimp on the cables that run from the battery to the amplifier, as we have said of the power current that passes over them.
little bit of physics and mathematics
First, check what is the maximum amount of current consumption from the amplifier you are using.To do this, look at the fuse (or fuses).Suppose that your amplifier can theoretically withstand just 100 A. Placing it better in the trunk.For a typical passenger car is preferable to take at least five meters.
I = 100 A;L = 5 m.
Even with the maximum use of the current, the voltage drop on the plus end of the line must not exceed 0.5 V. Remember the simplest formula for calculating school resistance, followed by a simple calculation:
R total = U / I =0 5 V / 100 A = 0, 005 ohms.
Thus, the cable resistance should not exceed 0, 005 ohms.Since we plan to use as many as five meters, it is necessary to calculate the resistance of the interval meter:
R m = R Com / L = 0, 005/5 = 0, 001 ohms.
As you can see, we need to chase the wire resistance is not greater than 0 001 ohm / m.And now you can take a catalog of any manufacturer, and then choose something suitable.
Cable connection
Once you lay the wire in the cabin, you can connect it to the positive terminal of the amplifier.Minus the cable is connected directly to the body, and for this you need to use a copy of the same cross-section as that of the positive battery.In no case do not resort to the help of screws!Attach only bolted, and the connection should be possible to qualitatively cleaned from traces of paint and other contaminants.
positive lead from the battery terminal must be connected to + 12V, and the negative - to the GND (ground - ground, ground).Before you connect the amplifier to the radio, get contact remote, because it is designed to engage the wire that just goes away.That's it, and there are the same 12V, and thus can control the radio and amplifier functions.Most often this cable blue (or blue with white stripe).It would be a good idea to install the system as a capacitor.
Pull the cable from the radio
we continue to tackle the question: "How to connect the amplifier to the radio?"Now we need to run a cable through which the signal will go to the player to the amplifier.Usually, it comes from the line output (Line Out), designated "bells" on the rear panel.
Please note that the recorder of different models and from different manufacturers may have a different number of line outputs.In most cases, there are three pairs, but in professional players sometimes more.This yields the following: Front, Rear and Sub, intended for connection of front, surround sound systems, as well as a subwoofer.Which do you want - it depends on what kind of amplifier in the car you purchased.
Connect all interconnect cables, which is characterized by enhanced screening.In fact, the choice of the wire quite drawn to the subject of a separate article, so we limit ourselves to one of our advice.In no case do not skimp on it, buy products only known and trusted suppliers.
Before you connect the amplifier to the car, will not be superfluous to also read the operating instructions.This will help you avoid many problems.
connect the cable to the control amplifier
We have already said that it is necessary to lay wires for control by the amplifier.By the way, it is advisable to make, stacking interconnect wire.Moreover, in many models have a special cable for this purpose.One end is attached to the amplifier (once again remind you that it is painted in blue or blue-white), and the other - to the radio.Tip: buying an amplifier in the car, be sure to purchase all the wires with it, because it is better to consult them about the seller.
It is not necessary to buy a large section of the cable, as it will take place at very low currents.
very important notes
extremely important point: in any case not stack interconnect wire near power cables!For example, if power wiring is on the right side of the cabin, the control wires must pass to the left, as long as possible from the power !!!
In addition, you can stretch them under rugs salon, as in this case a maximum probability of not "catch" noise.If you decide to global stupidity, paving the wires back to back, when the engine will listen to cod, howling and other noise in the speakers.No other way but to completely redo all the work in this case will not be.So how to connect the amplifier to the car - a long and tedious job, it is not necessary to hurry up.
In severe cases, the wires and did have to pull the ceiling, concealing them under the upholstery.This is especially true of cutting-edge vehicles that are literally "stuffed" different kinds of electronics.In this case the noise so much that sometimes has to use a special screening.
Differences in connecting different types of amplifiers
If you put the two-channel amplifier, you will need the same interconnect cable.If quad - a pair of double-wire or four-special.
And how to connect the amplifier to the radio, if it just a couple of line outputs, and the amplifier - Four?In this case, you can help the special Y-adapter (splitter).Cunning Chinese have created a device which provides input for each pair of outputs.Thus, one stereo pair we have just two.Conveniently, it does not say anything.Of course, to do so with the acoustics of the highest price category is not necessary, because the sound quality will significantly decrease.
There is another way.All the normal models of modern amplifiers (Audison, for example) are equipped with an internal function of the parallel distribution of inputs.In short, in this case, any extension you do not need.
If linear output from your player do not, it can be connected directly to the speakers (high signal).Almost all normal devices currently have the appropriate terminals (Hi level input).To connect using the most common speaker wire, and it would be better not to mix up the poles.
Connecting a single-channel amplifier (aka monoblock)
In single-channel amplifiers have only one function - to connect to the subwoofer.They have a very decent power, but also possess the ability to work under low-impedance load.What is it, by the way?In a conventional automotive acoustic impedance of only 4 ohms, and all other equipment is much lower specifications (3 ohms, 2 ohms, 1 ohm).This is called a low-impedance load.All these amplifiers are class-D.
Today, they all have a built-in LPF-filter that cuts all frequencies above those that you set as the maximum for the subwoofer.Driving it easy to connect to a disgrace.Subwoofers are connected in parallel or in series, or only one speaker is mounted.At the same time, you can connect even more than two woofers at once, but it is important to take into account that not all models of subwoofers can cope with significantly increased resistance.
give the most simple and common mounting scheme.Linear signal from the recorder goes to the amplifier, summed and amplified.Wiring diagram control and transmission wires to be found in the instructions from your manufacturer.
channel amplifier How to connect?
And now we know how to connect the amplifier to the radio, if it is a two-channel model.Devices of this type are the starting point for many of the world's automotive sound.The reason is not only low cost, but simple.These amplifiers are often used to connect to the front speakers or a subwoofer.Let's talk about each of these options.
Connecting front speakers
If you plan to use the unit for the "swing" the front or rear speakers, connect it to the stereo mode.So, how to connect a two-channel amplifier?
signal is fed via a low or high level.It is desirable to connect the low-pass filter (HPF), which is particularly important when mounting this circuit.In this case, the load on each amplifier may be up to 2 ohms.Thus, each channel can be hung on the one speaker system 4 ohms.
Connecting subwoofer
very common device on the so-called "bridge" option. Before you connect the subwoofer to the amplifier, check the "freshness" of the device: almost all new models of great use this mode.Consequently, their instructions are detailed diagrams that demonstrate where and how to connect the positive and negative wires.In this case, power is added, and the sound is a more juicy and saturated.
In addition, the rear panel contains icons that indicate the cable connectors for power, ground, and compartment under the wires to the speakers.Finding your way is easy.Here's how to connect the subwoofer to the amplifier.Not too difficult, right?
Some models have a special switch, with which you can transfer technique in mono mode.Very important: if you use bridge mode, remember that in this case, almost all the "amps", with rare exceptions, do not work under a load of less than 4 ohms!Before you connect the subwoofer to the amplifier, the latter should be included in the filter LPF.Otherwise, all frequencies above 50-100 Hz will go to the subwoofer, and the sound is hopelessly corrupt.It probably will not like even to people who are not okay with a musical ear.
four channels!
How to connect a 4-channel amplifier?In general, and in this case there is absolutely nothing complicated.Positive cable pull from the battery, follow the above instructions (thicker wire and take as much as possible qualitative).
line-out on the radio (RCA - tulips) should be four of them.If they are two, buy a splitter, which we mentioned above.Lineyniki attached to the player and amplifier.If you are going to connect the amplifier to a standard tape recorder, be sure to disconnect the battery as this may burn the fuse.
then control cable (remote) extends between the amp and audio recorders.As we have already said, it is very thin and badly in need of qualitative screening.Then, connect speakers, runs its setup.
How to connect a single-channel amplifier?
Such technology - the actual connection in the same housing one and two-channel models.Accordingly, you can connect multiple subwoofers, while the remaining outputs (marked with corresponding icons) to "hang" the front and rear speakers.
How to mount several amplifiers?
How to connect two amps?If you plan to install in the car several blocks of this nature, there are two ways to do it.First - just reach one thick cable from the battery, and then let the current through the splitter to the amplifiers.Pay attention!If the wires are longer than 40 cm, and have a lower (compared with the main cable) diameter, it is extremely important to protect them by means of fuses.
Option number two.Pull the wires from the battery as much as you have installed amplifiers.Despite the apparent technological complexity of such a decision, in practice it's not so bad.The fact that a couple of relatively thin wires is much easier to throw than one thick.And most importantly, in this situation, you need to think about how to connect the amplifier 2.And of fuses can be no worry.
Pull the wires to the speaker
talk about the features of the connection of amplifiers and loudspeakers.As we have mentioned, it is necessary to use special cables.They can be pulled without fear of interference from other electronics in the car.But on the acoustic crossover "aiming" to catch quite real, so that the cable should be placed as far as possible from sources of possible interference.
There is only one problem.We are talking about pulling cable in the door.So how to connect the amplifier to the speakers?In most cases, manufacturers do not forget about consumers, leaving the special connectors for cable channels or embedded rubber sleeves for them.Good luck!
