However, it is necessary to correctly calculate the resistance. If the connection is incorrect, the subs will simply move around pumping air from each other without much volume. It is possible to install a subwoofer using a makeshift method with your own hands, but it is not a fact that everything will work as it should, and then at the service center the entire structure will have to be dismantled and reinstalled, and this will obviously cost more than if everything was done from scratch. Parallel left and serial connection. What is the easiest way to connect an active subwoofer to a car radio? Only the sound quality may suffer from this. When the filter is turned on, only bass will be heard.
The final stage of connecting a passive subwoofer is connecting it to an amplifier. This is not entirely true. If in doubt, consult your retailer when purchasing both devices. After purchasing a subwoofer or amplifier, check the quality of the standard wire included in the kit. It should be located as close as possible to the battery in the engine compartment.
If you lose sight of it, the system simply will not work. Happy connections! A story about How to install (connect) a Subwoofer in a car 400w Subwoofer
Subs with one coil 2 and 4 Ohm
1 sub with two and one 4 ohm coils
1 sub with two 2 ohm coils
3 subwoofers with two and one 4 ohm coils
4 subwoofers with two 4 ohm coils
3 subwoofers with two 2 ohm coils
4 subwoofers with two 4 ohm coils
4 subwoofers with two coils of 2 ohms, resistance 1 ohm
4 subwoofers with two 2 ohm coils
4 subwoofers with two 4 ohm coils
4 subwoofers with one 8 ohm coil
2 subwoofers with one 8 ohm coil
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Good nutrition is the key to success
The amplifier connection procedure begins with the power wires. Wiring is the most important element of a car audio system; the volume and sound quality depend on it. Amplifiers need a stable power supply, otherwise the power will not be enough and the sound will become distorted. To understand why you need to pay attention to the quality of wiring and how it affects the sound reproduced by a loudspeaker, you need to know what a music signal is.
Some suggest that it represents a sine wave, however, the musical sinhala is characterized by a large difference between the normal and peak value. If sharp signal bursts are not important for car speakers, then in the case of an amplifier the situation is completely different. If the signal exceeds the permissible power for even a second (or even a millisecond), then these “anomalies” will be audible even to those who cannot boast of a good ear for music.
How to connect a monoblock in 1 ohm
It may be easier to connect a single-coil subwoofer to a monoblock or multi-channel amplifier. It's a completely different matter if the subwoofer has two voice coils or two or more of them.
A two-coil subwoofer, as well as two, three or more subwoofers, can be connected in four ways: each coil separately, parallel connection of coils, serial and combined.
What each of these subwoofer switching options gives is, first of all, versatility, different capabilities. Let's consider each option separately. But first of all, you need to understand what happens when the coils are connected in parallel or in series.
When the coils are connected in parallel, the total resistance, roughly speaking, becomes half as much. For example: if we connect two 4 Ohm coils in parallel, we get a total resistance of 2 Ohms, if we connect two 2 Ohm coils, we get a total resistance of 1 Ohm.
The opposite effect occurs with a series connection. When connecting two 4 Ohm coils in series, we get a resistance of 8 Ohms, when connecting two 2 Ohm coils, we get 4 Ohms. etc.
Connecting each coil separately . This option allows you to connect a powerful two-coil subwoofer to a less powerful four-channel amplifier if it is not possible or not possible to purchase a powerful monoblock. Naturally, the resistance of the coils must correspond to the operating load of the amplifier in a bridge connection and the GAIN controls must be at the same level.
Parallel connection of coils - subwoofers.
As described above, when connected in parallel, the resistance is halved, allowing the amplifier, operating at a lower load, to deliver more power.
But as they say, “if it leaves somewhere, it will definitely arrive somewhere.” In this case, this is true, only on the contrary, the power has increased, and the amplifier’s control over the subwoofer has decreased, as a result of which the bass becomes smeared.
Series connection of coils . If the amplifier is powerful, why not, increase the impedance (resistance) and get a more developed bass.
I would also like to add that if the resistance of the connected coils exceeds the permissible load of the amplifier, this is not at all scary, it’s just that the output power of the amplifier will be less.
Let's say an amplifier with a declared operation for a load of 4 ohms produces 500 watts, and with a load of 8 ohms, for example, it will produce 350 watts.
Combined connection . Subwoofers are coils that are simultaneously connected in serial and parallel connections for switching to a specific load. There are a great many connection options, it all depends on the number of subwoofer speakers, the resistance of the subwoofer voice coils and the capabilities of the amplifier.
“Every little one knows, black is a minus, red is a plus!”
Connecting the subwoofer to the radio
It is necessary to connect the subwoofer to the radio only through an amplifier. Since the built-in power of the radio is not enough for the subwoofer to work properly, you will not get normal bass. The connection chain is simple: radio-amplifier-subwoofer. The radio transmits the signal to the amplifier. The amplifier, in turn, amplifies this signal and sends it to the subwoofer.
What is an amplifier for?
The amplifier is used to increase the volume headroom, reduce distortion and improve the sound quality of music. The built-in amplifier of the radio is not enough to drive a heavy low-frequency speaker, which will cause large distortions, the volume level will be low and, with a high probability, the subwoofer may fail or simply “burn out.”
If you have an active subwoofer, then you will not need an additional amplifier, because it is already built into the subwoofer housing (more about active subwoofers). For a passive subwoofer you will have to choose an amplifier (read how to do this correctly on this page).
How to connect a subwoofer to an amplifier
Single channel connection
Connecting a subwoofer to an amplifier is not difficult; just connect the amplifier's audio output jack to the subwoofer coil or coils using speaker wires.
The wires should not be thin. In most cases, choose copper wiring with a cross-section of 4 mm and there will be no problems.
Connecting speaker wires
This subwoofer connection diagram is suitable for one channel of an amplifier or monoblock.
Monoblock is a single-channel amplifier designed specifically for subwoofers.
Connecting to a subwoofer via terminal block
Setting up the car's multimedia system
Connecting to a subwoofer directly
Connecting a subwoofer with a bridge
- In the case of using a multi-channel amplifier, the sub can be connected to two channels simultaneously, using the minus of one and the plus of the other, this connection is called bridged, with this method the power output by the amplifier increases significantly (see the specifications for specific numbers).
- So you can connect a subwoofer to a two or four channel amplifier, using 2 channels for acoustics, and the remaining 2 for the subwoofer.
- To connect a subwoofer with a bridge, make sure that your amplifier supports this feature.
- If you connect a low-frequency speaker to an amplifier by changing the polarity, that is, connect the plus of the subwoofer to the minus of the amplifier output and vice versa, then the speaker will work in antiphase, there is nothing wrong with that, sometimes such a connection is used intentionally if the amplifier does not have phase adjustment (more about adjustment phases).
Connecting the subwoofer coils
The technical documentation for the subwoofer states the resistance of its coils (1 Ohm, 2 Ohm, 4 Ohm, rarely 0.
5 Ohms), and the technical documentation of the amplifier indicates what resistances it can work with; this information is needed so that you correctly and effectively connect the subwoofer to the amplifier.
The lower the resistance of the sub, the more power the amplifier will produce, provided that it can operate at this resistance. A subwoofer speaker may have several coils (1 or 2, rarely 4).
When the coils are connected in series, the resistance increases, while in parallel it decreases. If you don't want to learn definitions and count fractions, just save this cheat sheet (parallel and serial connections).
How much ohm to connect the subwoofer
The higher the resistance, the better the sound quality; the lower, the more power the amplifier delivers. If you need a lot of loud bass, then turn it to the minimum that the amplifier can provide, and if the overall sound quality of the system comes first, then it is 2 Ohms or 4 Ohms, depending on the power output.
Video on how to connect 2 subwoofers or more. Subwoofer connection diagram 2x2 Ohm, 4x4 Ohm, 1x1 Ohm. Serial connection of speakers. Parallel connection of speakers. Basic principles.
- Happy connections!
- I decided to post some subwoofer connection diagrams... someone might need it...
see also
What is an amplifier for?
The sound quality will depend on how well the connection is made. There are various options for installing a stereo sound or audio system in a car. So:
- If you are not satisfied with the power of your car radio (see Compare car radios and choose the best) or the quality of the sound it produces, you can solve this issue with the help of an amplifier. Of course, this is not at all the same equipment that is used in sound systems that operate on a 220-volt power supply.
- There is only one battery in a car, and two in a truck or bus - 12V each. Amplifiers for cars are designed for such a low-power network. How do they increase the existing voltage?
- The fact is that a voltage converter is built into the car amplifier. Depending on the technical characteristics of a particular device, the converter, using a pulse, can increase the voltage from 12 to 100 volts. So, the amplifier independently provides itself with the required voltage.
How to connect a subwoofer in a car
“Every little one knows, black is a minus, red is a plus!”
Connecting the subwoofer to the radio
It is necessary to connect the subwoofer to the radio only through an amplifier. Since the built-in power of the radio is not enough for the subwoofer to work properly, you will not get normal bass. The connection chain is simple: radio-amplifier-subwoofer. The radio transmits the signal to the amplifier. The amplifier, in turn, amplifies this signal and sends it to the subwoofer.
What is an amplifier for?
The amplifier is used to increase the volume headroom, reduce distortion and improve the sound quality of music. The built-in amplifier of the radio is not enough to drive a heavy low-frequency speaker, which will cause large distortions, the volume level will be low and, with a high probability, the subwoofer may fail or simply “burn out.”
If you have an active subwoofer, then you will not need an additional amplifier, because it is already built into the subwoofer housing (more about active subwoofers). For a passive subwoofer you will have to choose an amplifier (read how to do this correctly on this page).
How to connect a subwoofer to an amplifier
Single channel connection
Connecting a subwoofer to an amplifier is not difficult; just connect the amplifier's audio output jack to the subwoofer coil or coils using speaker wires.
The wires should not be thin. In most cases, choose copper wiring with a cross-section of 4.2 square meters. mm and there will be no problems.
Connecting speaker wires
This subwoofer connection diagram is suitable for one channel of an amplifier or monoblock. If a 1-channel amplifier has two pluses and minuses, then don’t get lost, these pairs are simply paralleled for ease of switching. And it makes no difference which of the pluses and minuses the corresponding wire is connected to.
Monoblock is a single-channel amplifier designed specifically for subwoofers.
Connecting to a subwoofer via a terminal block Connecting to a subwoofer directly
Connecting a subwoofer with a bridge
- In the case of using a multi-channel amplifier, the sub can be connected to two channels simultaneously, using the minus of one and the plus of the other, this connection is called bridged, with this method the power output by the amplifier increases significantly (see the specifications for specific numbers).
- So you can connect a subwoofer to a two or four channel amplifier, using 2 channels for acoustics, and the remaining 2 for the subwoofer.
- To connect a subwoofer with a bridge, make sure that your amplifier supports this feature.
- If you connect a low-frequency speaker to an amplifier by changing the polarity, that is, connect the plus of the subwoofer to the minus of the amplifier output and vice versa, then the speaker will work in antiphase, there is nothing wrong with that, sometimes such a connection is used intentionally if the amplifier does not have phase adjustment (more about adjustment phases).
Connecting the subwoofer coils
The technical documentation for the subwoofer states the resistance of its coils (1 Ohm, 2 Ohm, 4 Ohm, rarely 0.
5 Ohms), and the technical documentation of the amplifier indicates what resistances it can work with; this information is needed so that you correctly and effectively connect the subwoofer to the amplifier.
The lower the resistance of the sub, the more power the amplifier will produce, provided that it can operate at this resistance. A subwoofer speaker may have several coils (1 or 2, rarely 4).
When the coils are connected in series, the resistance increases, while in parallel it decreases. If you don't want to learn definitions and count fractions, just save this cheat sheet (parallel and serial connections).
Connection options
How many ohms should I connect the subwoofer to?
The higher the resistance, the better the sound quality; the lower, the more power the amplifier delivers. If you need a lot of loud bass, then turn it to the minimum that the amplifier can provide, and if the overall sound quality of the system comes first, then it is 2 Ohms or 4 Ohms, depending on the power output.
Video on how to connect 2 subwoofers or more. Subwoofer connection diagram 2x2 Ohm, 4x4 Ohm, 1x1 Ohm. Serial connection of speakers. Parallel connection of speakers. Basic principles.
Happy connections!
How to connect a subwoofer to the car's on-board network
We will not dwell on the choice of installation location for the subwoofer and the method of its installation. This depends on the car model, the size and shape of the subwoofer, and individual preferences.
First, it’s worth saying a few words about the types of subwoofers and how to connect them. Subwoofers are either passive or active.
A passive sub is a low-frequency speaker that contains one or more speakers, which can be installed with or without a factory box. This subwoofer receives only the audio signal from the amplifier.
The active subwoofer circuit has its own amplifier, so in addition to the signal wire from the radio, you need to connect power to it, the “+” and “-” terminals.
Methods for connecting subwoofers | Useful car audio
June 17, 2019
// Useful car audio
One of the most important components in audio systems is the subwoofer.
A subwoofer is a speaker designed to reproduce low frequencies that are at the lower sensitivity threshold of the human ear. The term "Subwoofer" is used to describe a system with a low-frequency driver housed in a separate housing.
Terminology
- Maximum sound pressure. Maximum subwoofer volume.
- Frequency range (Hz). The frequency range of the subwoofer can be divided into the area of deep bass 20-40 Hz, medium bass 40-80 Hz, high bass (midbass) 80-160 Hz.
- Sensitivity (dB). The more sensitive the dynamics, the less the amplifier is loaded, the greater the sound pressure it produces at the same power.
- The larger the diffuser size, and therefore the area, the more powerful the bass.
Connecting a subwoofer
Proper connection of a subwoofer with two coils is very important, especially when the amplifier is not capable of operating in a low-impedance load or is too powerful in relation to the speaker. Do not expose the amplifier to loads lower than those permitted by the manufacturer.
The table below shows the connection resistance options.
Connection methods
Parallel connection of speakers Series connection of speakers
| Methods for connecting subwoofers | |||
| Number of speakers | Voice coil | Total impedance | Connection diagram |
| 1 speaker | 4+4 Ohm | 2 ohm | |
| 2+2 Ohm | 1 ohm | ||
| 1+1 Ohm | 0.5 Ohm | ||
| 2 speakers | 4+4 Ohm | 1 ohm | |
| 2+2 Ohm | 0.5 Ohm | ||
| 1+1 Ohm | 0.25 Ohm | ||
| 1 speaker | 4+4 Ohm | 8 ohm | |
| 2+2 Ohm | 4 ohm | ||
| 1+1 Ohm | 2 ohm | ||
| 2 speakers | 4+4 Ohm | 4 ohm | |
| 2+2 Ohm | 2 ohm | ||
| 1+1 Ohm | 1 ohm |
Instructions for setting up a 4-channel amplifier
Generally, there are three types of amplifier settings you need to know. All of them are given below.
Amplifier setup for four speakers but no subwoofer
So:
- The amplifier's filter/crossover is turned off, and only the speakers reproduce the entire frequency range.
- We put the Crossover Selector switch in the Flat position.
- Level is set to position 8V.
- Bass Boost is set to 0dB.
- Now you will need to increase the volume on the car radio, but not more than 90%.
- The equalizer, if it is not configured, is set to position 0 according to music styles.
- Connect the amplifier and slowly turn the Level clockwise until the end.
Setting up an amplifier for a subwoofer and speakers
So:
- Crossover Selector Front on the amplifier is set to the HP position.
- Phi Pass is set to 60Hz-80Hz.
- Crossover Selector Rear is installed on LP.
- Love Pass is adjustable in the frequency range 65Hz-85Hz.
- Level is set to 0.
- Bass Boost is also at 0dB.
- As with the above-described Level setting, rotate it all the way, but adjust the sensitivity.
Tuning for local gain
So:
- Crossover The selector is set to Flat.
- Turn on HP for tweeters.
- Turn the Hi PASS control to the 250Hz position.
- We adjust the amplifier using the Level rotator.
Delicacy required
Next, you should take into account that there are different requirements for a subwoofer for a home theater and for a trifonic. In the first case, he needs to “turn up the heat” at the right moment in order to enhance the viewer’s impression of the active scenes on the screen; in the second - delicately take over the reproduction of the low-frequency component of the recording. To do this, the sub must have a smooth frequency response in the small part of the spectrum for which it is responsible, and not a clearly pronounced resonant peak at some frequency. And this is not so easy for developers to achieve, given the need to meet a given price segment. Therefore, it is quite easy to find a “musical” subwoofer among expensive models and not easy among affordable ones. By the way, such a sub will be good in the recreation center system.
An example of an inexpensive model with additional sound customization options is the B&W ASW608 (2018). Let us pay attention to the fact that the type of acoustic design of its speaker is a closed housing. It is among similar models or those equipped with a passive radiator that you should look for a subwoofer for a trifonic. Bass reflex versions often tend to behave resonantly at a certain frequency, although they produce a louder sound - but this is not a rigid dependence.
Connecting interconnect wires and control (REM)
To lay the cable, you need to find the linear output on the radio. The linear output can be recognized by the characteristic “bells” that are located on the rear panel of the radio. The number of linear outputs differs in different radio models. Usually there are from one to three pairs. Basically they are distributed as follows: 1 pair - you can connect a subwoofer or 2 speakers (labeled as SWF) If there are 2 pairs of them, you can connect 4 speakers or a subwoofer and 2 speakers (outputs are labeled F and SW), and when there are 3 pairs of linear wires on the radio, you can connect 4 speakers and a subwoofer (F, R, SW) F This is Front i.e. front speakers, R Read rear speakers, and SW Sabwoorer I think it’s clear to everyone what that is.
The connection will require an interconnect wire, which should never be skimped on. It is prohibited to lay the interconnect cable near the power wires, as various types of noise will be heard when the engine is running. You can run the wires both under the floor mats and under the ceiling. The latter option is especially relevant for modern cars, in the interior of which there are electronic accessories that create interference.
