How to connect an amplifier to a radio: expert advice

This setting is safe for the audio system, but is not absolutely true for all audio systems. Further adjustments are made for the specific system and listener.

Setting up the radio depends on its specific model; here we will look at the settings that are available on almost any radio.

1. Setting up the radio: 1.1 Bass Boost - EVIL! Forget about him! Set it to 0 or OFF 1.2. Loudness - loudness compensation; in systems with external amplifiers, we first set the loudness compensation, then we coordinate the levels of the GU and amplifier, or do not use this function at all. If the GU and the external amplifier are matched in level and then turn on the loudness compensation, clipping may occur! 1.3. Equalizer - you can use it to compensate for shortcomings in the sound of the system; personally, I initially set it completely to 0, then, when identifying shortcomings in the sound, I adjust the sound over time. Here, too, when increasing certain frequencies on an external amplifier, clipping may occur, it is worth remembering. 1.4. Sound Retriever and other various “sound improvers” - As in the case of loudness compensation, they are set before the GU is coordinated with the amplifier, or we do not use it at all. 1.5. Radio crossover: If there is one, set it to - 1.5.1 HPF - Depends on the type of speakers, open the specification and look at how many Hz it plays and set the cutoff. Approximately 16 cm midbass from 80 Hz, 13 cm - 100-125 Hz. Mid 150-200 Hz. Once again, this is not the ultimate truth, it all depends on the specific speaker and how many watts will be supplied to it (the lower the cutoff, the less watts can be supplied to the speaker). The order of the filter is by ear (the higher the order of the filter, the less likely it is that the speaker will fail at high powers) 1.5.2 LPF - Depends on the type of acoustic design of the subwoofer. Approximately 60 - 80 Hz. The filter order is by ear. It is advisable to set the level to 0, and adjust the volume directly from the amplifier.

The amplifier's settings depend on whether it is equipped with filters. If HPF and LPF are set on the radio, then it is not necessary to set them on the amplifier; you can simply open the filter as much as possible. If there is no crossover in the radio, we set the cuts on the amplifier. Turn Bass Boost to 0

2. Setting up the amplifier for speakers: 2.1. Turn on HPF filter 2.2. We set the cut in the same way as described in paragraph 1.5.1 2.3 Set Gain (Level): - Turn on a well-known track. — We set the maximum volume on the radio (WITHOUT DISTORTION). This does not mean that you need to turn the volume up to maximum, for example: the pioneers have a maximum of 62 volume divisions, we set it somewhere around 45-50. Different radio models behave differently, at a bass club I tested it with a Pioneer DEH 80PRS oscilloscope, even at a volume of 62 without “improvers” it doesn’t clip. But it’s not a fact that your radio will behave the same way, so turn it up to about 80% of the maximum volume. — We begin to turn the Gain (Level) until we hear distortion in the sound, as soon as we hear it, we turn the Gain back a little. - Run other tracks and listen to see if there are any distortions on them, if there are, then turn down the Gain - Remember! The volume that you set on the radio when setting Gain is the maximum! No more twisting!

3. Setting up the amplifier for the subwoofer: 3.1 Turn on the LPF filter (if you are using a monoblock, you don’t need to turn anything on) 3.2 Set the cutoff in the same way as described in paragraph 1.5.2 3.3 Setting up the Subsonic (infra-low-pass filter). If you have a subwoofer designed like a Bass Reflex (FI), Quarter-Wave Resonator (QW), or Horn, we definitely use Subsonic. The filter is set 3-5 Hz below the box tuning frequency. 3.4 Gain is adjusted in the same way as in paragraph 2.3

The initial setup is complete, keep an eye on the speakers for the first time; minor adjustments to the settings may be required. Don't forget to warm up your speakers after purchase. Provide proper nutrition to avoid clipping! Follow the prosado

Grounding

This point is of great importance for the reliable operation of an amplifier connected in bridge mode. The ground connection can be made directly at the installation site of the device. To do this, take a short piece of thick insulated wire. A common bare braided cable will do.

One end of the wire is connected to the negative terminal of the car amplifier, and the other is inserted between the bracket or bar securing the device and the floor of the body.

To avoid interference in the speakers, the body of the device should not be allowed to come into contact with the body of the car. Otherwise, ground loops will form, which will lead to unpleasant interference. To isolate the housing from the car body, you can place a strip of rubber under the mounting bracket.

Setting up the amplifier for the subwoofer and front

In order for the bass frequencies not to “scatter”, but to sound in complete harmony with other channels, acoustic phase correction is performed. This parameter is best adjusted according to the driver’s subjective feelings. The “Acousticphase” regulator is located under the slot on the amplifier panel. You need to slowly turn the phase control until the bass frequencies reproduced by a separate speaker sound in the same plane. This is a subjective feeling, but if the phase is chosen incorrectly, it will seem that the bass and front are working separately, and there is no sense of harmony and integrity of the sound. Acousticians call this sound delamination. It is best to listen to a musical fragment and set the acoustic phase in the driver's seat, where the disturbances are most clearly noticeable.

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

• 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

• 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

• 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.

Note. If the car radio in the car is a new version, adjusting the amplifier may not be necessary. These radios already have automatic Bass Boost settings. If this is the case, then you will just need to adjust the Level rotator.

Setting up an amplifier for a Hertz subwoofer

The perception of sound differs markedly from person to person, so the comfortable signal level and frequency spectrum are different for everyone. Self-adjustment of the subwoofer in your car allows you to change the sound range and adjust the low-frequency system “to you” and your car. Music of different styles can be played inside the car, but the low-frequency speaker system must produce high-quality bass for all musical works.

Some pieces of music contain overtones that cause slight discomfort. They are usually in the range of 30-40 Hz. Tuning by ear is best done when playing fragments of classical music performed by a large symphony orchestra. Musical styles “Pop”, “Rock” or “Rap” cannot provide a complete and optimal sound picture due to the limited number of musical instruments. In addition to classical music, the low-frequency channel can be adjusted using special tone generator programs. They allow you to set the reproduction of bass frequencies with high precision.

The first step in setting up the ULF for a low-frequency speaker system is to turn on an adjustable low-pass filter. It is designated “LPF” on the amplifier housing. It should be included in the range of 50-65 Hz. It noticeably attenuates the band that is above the filter's cutoff threshold. The precise setting of this filter will be made after the final adjustment of the other frequency limiters. The LPF system can be installed on car radios and amplifiers. In this case, only one filter is turned on. It is preferable to turn on “LPF” on the car radio.

The adjustment of such low-frequency amplifiers as Hertz, Fusion, JBL and Magnat is almost the same and the names of most of the adjustments are also the same. On all models, the necessary adjustments have a slot for a screwdriver.

Connection

After studying the types and types, we move on to the question of how to connect a subwoofer to a car radio without an amplifier:

To start connecting an active subwoofer, first we find two inputs on the back panel of the car radio, then using a linear wire we connect the input of the head unit to the subwoofer input. Then we connect the power - to do this we stretch the power wire from the “plus” terminal of the battery to the subwoofer A “negative” » we connect the subwoofer and the battery with a wire. When connecting an active subwoofer to a car radio, it is necessary to install an additional (very important) component - a fuse. It should be installed near the battery itself. The installation diagram of a subwoofer without an amplifier is shown in the first picture of the article. When low-frequency sounds are played, the subwoofer's electrical power consumption increases significantly , as a result of this, the load on the elements supplying the on-board network of the machine increases. Therefore, for the safety of the power circuit, an additional capacitor is installed in the subwoofer power circuit

• After connecting the subwoofer to the car radio, we proceed to setting up our speaker system
• As a rule, the whole setup comes down to creating a limit for the upper limit of operation for the woofer, then choosing the correct oscillation phase for the speaker

Now, how to connect a subwoofer in a car without an amplifier, you usually have to completely redo the audio power system, so here is an approximate list of necessary purchases:

• 5 meters 8AWG power cable(red)
• 1 meter of cable 8 AWG black
• 5 meters of control cable (thin) with a cross section of 0.75 mm
• Fuse holder FH58
• 40 Amp fuse
• Interconnect cables
• 2 meters of tubing
• Terminals and ties

The circuit of the sound system is simple, so there is no point in describing it in full, see the first photo of this article:

• The fuse is placed 10-15 centimeters from the battery, throw the power cable into the tube
• All cables inside the cabin are laid under the carpet

Subwoofer terminals

How to connect a subwoofer in a car without an amplifier - see the designation of the outputs on the subwoofer:

• +12V output is power (supplied only to the battery through a fuse)
• REM is the control wire, it comes from the radio, and connects to a blue/white wire (for Pioneer car radios, if you have a different one, then see the radio connection instructions), which usually sticks out of the bundle of wires coming from the radio
• The GND terminal is ground (negative wire)
• LOW INPUT contact (under tulips) - RCA wires are connected (to the subwoofer from the radio, if any)
• HI-INPUT contact - connect here if there are no RCA outputs on the radio

Now it’s clear how to connect a subwoofer to a car without an amplifier, all that remains is to wish you success in this matter; to better understand the topic, we recommend watching our training video.

Setting up household amplifiers

The principles of adjusting home amplifiers are practically no different from the method described above. But there is an exception - if it is an amplifier and not a receiver, then it often has two channels and an equalizer.

First, everything is set to zero, and then the desired frequency response is adjusted by ear and taste on the equalizer. They also adjust the input sensitivity so that there is no distortion at the output.

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.

If the car amplifier is connected properly, the signal will flow through the wires undistorted. Carelessly done work or incorrectly selected wire cross-section will result in the sound being more compressed, rough and sluggish. In some cases, wheezing may also be clearly audible.

How to choose a wire cross-section?

Wire is the most common metal with a certain level of resistance. The thicker the wire, the lower the resistance of the wire. To avoid sound distortion during large voltage fluctuations (for example, when playing powerful bass), you must install the correct gauge wire.

An amplifier is considered to be a rather electrically intensive device. For its effective operation, high-quality grounding is necessary so that it is possible to receive the necessary energy from the battery. In order to choose the correct cross-section of wires, it is necessary to make some calculations. First, look at the instructions for the amplifier (or directly at the box from the manufacturer, if there is no documentation, use the Internet) and find the rated power value (RMS) there. Rated power is the signal power an amplifier can deliver over an extended period of time to one channel of 4 ohms.

If we consider four-channel amplifiers, they usually have a power of 40 to 150 watts per channel. Let's say that the amplifier you purchased produces 80 watts of power. As a result of simple mathematical operations, we find out that the total power of the amplifier is 320 W. Those. How did we calculate this? It’s very simple to multiply the rated power by the number of channels. If we have a two-channel amplifier with a rated power (RMS) of 60 W, then the total will be 120 W.

After you calculate the power, it is advisable to also determine the length of the wire from the battery to your amplifier and you can safely use the table to select the required wire cross-section. How to use the table? On the left side the power of your amplifier is indicated, on the right you select the length of the wire, go up and find out what cross-section you need.

The table shows the cross-sections of copper wires, remember that a large number of sold wires are made of aluminum coated with copper, these wires are not durable and have more resistance, we recommend using current copper wires.

Fuse selection

In order to secure the connection of the car amplifier, it is necessary to protect the power supply from the battery to the amplifier using a fuse. Fuses should be placed as close to the battery as possible

It is important to distinguish between a fuse that protects the device itself (whether it is an amplifier or a radio) and a fuse installed on the power wire

The latter is needed in order to protect the cable itself, since a considerable current flows through it. Make sure that the fuse ratings match, since if the rating of the wiring fuse is very large, the wire may burn out as a result of a short circuit. If the rating, on the contrary, is less, then the fuse can easily burn out at the time of peak loads and then there will be no other choice but to buy a new one. The table below shows the wire cross-section and the required fuse rating.

Connection diagrams

To properly connect the speakers, you need to develop a device layout and calculate the cable routes. To connect the amplifier to the speakers in a car, you need to use an acoustic cable with a metal screen that reduces the impact of electromagnetic waves (from radio transmitters, control units or the ignition system).

Switching circuits allow you to connect the front and rear speakers side by side into common circuits, freeing up the remaining rear channels of the amplifier unit for switching the subwoofer. The subwoofer is connected by a bridge, which increases the transmitted power while reducing the load on the electronics of the amplifier circuit.

Sequential

The circuit for connecting the amplifier to the car radio includes speaker connection circuits. When the loudspeaker windings are switched in series, the total resistance increases. A similar connection is used when connecting elements for additional sound located in the rear part of the cabin. The number of loudspeakers connected in a common circuit is unlimited. The permissible total resistance must correspond to the parameters of the amplifier unit.

To connect speakers to an amplifier in a car, you need to connect the positive terminal of one of the channels to the positive input of the speaker, the negative output from the same channel goes to the negative terminal of the additional speaker. The remaining speaker terminals are connected with an acoustic cord. By analogy, symmetrical channel loudspeakers are connected.

Parallel

Parallel connection of speakers through an amplifier allows you to reduce the load resistance, which drops in proportion to the number of elements installed in the circuit. In this case, an increase in power is observed; the number of connected speakers is limited only by the characteristics of the amplifier unit and the power of the speakers themselves. Car amplifier units allow you to connect circuits with a total resistance of 1-2 Ohms (there are modifications that can operate at 0.5 Ohms).

The positive cable from the first channel goes to the positive terminals of the loudspeakers, and the negative cable is similarly routed to the negative terminals. The speakers on the opposite side are connected in the same way; the second channel of the amplifier unit is used for switching.

Series-parallel

A combined technique is used when it is necessary to connect an amplifier to a radio to reproduce sound on an increased number of speakers. The circuit allows you to increase the output power of the speaker system while maintaining the standard level of impedance per channel. The car owner connects an unlimited number of speakers with a total resistance of 2-16 Ohms to each channel (depending on the characteristics of the amplifier circuit).

For example, in a channel circuit it is supposed to mount 4 speakers. A positive signal is supplied to the positive terminal of the first and third speakers. The negative outputs of these speakers are connected to the positive terminals of the second and fourth loudspeakers. The remaining free speaker outputs are connected to the negative terminal of the channel.

Connection diagram for a passive subwoofer to a 4-channel amplifier

To connect this type of speaker to a 4-channel amplifier, you will have to use a standard circuit.

Connection diagram for 4 channel amplifier and subwoofer

So:

• First, the subwoofer and other speakers are connected to the amplifier.
• Then the amplifier is connected to the car radio.
• Having received the signal directly from the car radio, the amplifier distributes it. Part of the signal is sent to the sub, and part to the tweeters.

Amplifier 4 channel connect subwoofer

Note. Often the subwoofer is placed in the trunk of a car. In view of this, it is necessary to stretch cables there through the entire cabin. In this case, the path from the battery to the trunk is implied, and so much cable needs to be calculated.

Connection diagram for subwoofer and 4 channel amplifier

• When wiring cables, you need to make sure that the positive wire is protected with something, for example, corrugation. Basically, this means protecting the part that is located in the engine compartment, as close as possible to the battery.

How to connect to the standard radio

To connect the amplifier to the car radio, you need to remove the head unit, gaining access to the outputs on the rear of the case. Signal cables are laid along the shortest route; installation will require lifting the carpet and dismantling some of the plastic coverings. Interconnect cables are laid at a distance from the standard electrical wiring of the vehicle.

If the radio is equipped with a standard microphone or additional USB outputs with extension cables, you should check the tightness of the connectors and install the head unit in the standard socket. Then you need to install the removed plastic frames and air deflectors.

Connecting two-channel and four-channel

Connecting the amplifier to the standard radio depends little on the number of channels. The power cable is routed into the engine compartment through the holes in the engine panel. On some cars, the battery is located in a niche under the rear seat or in the luggage compartment. The cord is laid parallel to the standard wiring under the floor carpet; it is not recommended to bend the insulation over the sharp edges of the body panels. The negative cable is led out to the ground bolt or out to the car battery.

Then interconnect cables and a synchronous switching cord are connected to the amplifier; details of connecting the equipment are given in the factory operating instructions. The speakers are connected to the channel terminals; negative cords are prohibited from being combined into a common circuit or connected to the car body. When switching loudspeakers, you should take into account the location of the loudspeakers and the purpose of the channels. If the connection is incorrect, the sound picture is disrupted.

The subwoofer connection diagram includes the output of signal cables to the rear channels via a bridge circuit. The positive signal is taken from one rear output, and the negative signal from the opposite one. The remaining front outputs are used to power standard speakers connected side by side into common circuits. The type of connection depends on the resistance of the coils; the total value must correspond to the technical characteristics of the amplifier.

Connecting a single channel

1-channel type devices are used to power a passive car subwoofer. Due to the reduction in the number of channels, the power of the device increases, which allows it to operate with a load of up to 4 ohms. The design of the equipment uses a special electronic filter that limits the frequency of the audio range to be amplified. The bass amplifier for the subwoofer is a product type D.

The equipment is connected to the subwoofer using 2 cables connecting the positive and negative outputs to the speaker coil. Connecting the amplifier to the radio is carried out according to the method outlined above. It is allowed to use 2 identical subwoofers, which are connected into a single circuit using a parallel or series circuit. Negative outputs are switched to the amplifier block. Do not connect cables to vehicle body parts.

Connection without tulips

If there are no linear outputs on the head unit (typical of Chinese car radios), the cables from the speakers are connected to standard acoustic outputs through additional resistance. For switching, you will need to purchase 2 resistors with a nominal value of 0.1 and 1.0 kOhm. The elements are soldered into circuits, ensuring that the signal amplitude is reduced to an acceptable value.

It is possible to connect the amplifier through a ready-made adapter, which is connected by cables to the outputs on the head unit. On the other side of the block there are cords with tulip-type connectors, which are connected to an amplification device. It is recommended to check the operation of the paired devices in different sound modes, since the converter reduces the quality of the transmitted signal.

First step: turning on the LPF filter

LPF (Low Pass Filter) is a low-pass filter that allows the speakers to play the bass specified during setup, while attenuating the presence of high sound frequencies. It can be located on the car's head unit or amplifier and is designated LPF or LP.

It must be turned on in the low frequency range 50-63 Hz. This parameter will be further adjusted after the settings of the remaining filters have been set. If the LPF filter is located both on the car radio panel and on the subwoofer amplifier, you only need to turn it on on one device. It would be rational to choose a radio, since adjustments on the amplifier are a little more difficult.

Setup Instructions

The amplifier is configured in accordance with the recommendations set out in the operating instructions. To adjust the parameters, buttons and rotary switches are used, covered with a protective panel. Rotating correctors are recessed into the body, which reduces the likelihood of accidental position changes. To rotate the element, it is recommended to use a flat blade screwdriver.

A control diode of the power supply is installed on the equipment case; further adjustment of the device is allowed only when the green lamp is turned on. When using standard factory settings of the equipment, the sound picture is blurry. Adjusting the parameters allows you to highlight low and high frequencies, as well as reduce sound distortion.

Amplifier setup for four speakers without subwoofer

After completing the connection of the four-channel amplifier and checking the operation of the electrical circuits, you need to configure the acoustics according to the following method:

1. Turn the knob labeled Gain or Level to its minimum position.
2. When using standard door speakers, you need to turn the HP filter control to the maximum position (indicated on the body as Full). If the car has small-sized acoustics with a diameter of up to 100 mm (in the instrument panel or front pillars), then it is necessary to set the corrector to the position corresponding to 120 Hz.
3. Turn off the bass boost function and turn off the graphic equalizer.
4. If you connected a 4-channel amplifier with channel separation, then you need to activate the HP and LP filters (for high-frequency speakers and mid-range speakers, respectively). The controls are set to the position corresponding to 4 kHz.
5. The design of the amplifier unit has a HiLow Level switch, the position of which depends on the type of connection of the equipment to the head unit. When a signal is fed through speaker cords, the Hi position is set. If you connect the equipment to the linear outputs of the radio, the switch is moved to the Low position.
6. Turn on the head unit, which contains a laser disc with musical compositions; you can install a removable drive with recordings in MP3 format (with a high bitrate). Check the position of the loudness selector (should be off), and then smoothly turn the volume control until wheezing appears in the sound picture. Carefully turn the corrector back, determining the boundary of the appearance of interference.
7. Then the user adjusts the position of the Gain or Level control, the adjustment is made in the same way as adjusting the sound volume.
8. Determine the broadcast volume for the rear channels, comparing the settings with the parameters of the front speakers. If the car owner has difficulty adjusting the acoustic equipment, it is recommended to contact a specialized service center.

Setting up an amplifier for a subwoofer and speakers

The adjustment is made by analogy with the adjustment of a system with standard acoustics. To ensure an improved sound picture, it is recommended to relieve the speakers from broadcasting low frequencies. This action allows the diffuser stroke to be reduced and improves the reproduction of mid frequencies. The HPF corrector is used for adjustment; the position of the potentiometer is determined by the user by ear. Some car owners do not turn on the HPF adjustment due to distortion of the sound picture.

The use of bass boost for a subwoofer is not recommended since it affects the band above 40 Hz. When using a subwoofer with a bass reflex, the subsonic filter is turned on, which is adjusted to a frequency 2-5 Hz below the bass reflex value (indicated on the equipment).

Many car owners without technical education do not know how to connect an amplifier to a car radio - for them it seems like too much of a time-consuming task. In fact, you shouldn’t rush to contact a car service center, since installing a car amplifier is not so difficult.

Maintenance by specialists will be expensive, so in order to save money, it is worth trying to understand the connection procedure, which this article will help with.

For high-quality operation of the amplifier you need:

1. Give him good food;
2. Give a signal from the radio. We looked at how to properly connect the radio here;
3. Connect speakers or subwoofer.

More details on how to connect the amplifier can be found below.

Second step: adjusting the subwoofer speaker frequency

The frequency filter controls the subwoofer's playback frequency. It looks like a gear (phase shifter) with a hole for adjustment with a screwdriver in the center and is designated Subsonic. Adjusting this filter will remove low frequencies that are beyond the audibility range of the human ear and increase the service life of the subwoofer cone by preventing oscillations beyond the limits of capabilities. It is optimal to adjust the frequency five parameters lower than the standard bass reflex frequency of the subwoofer, which is indicated in its technical documents.

Settings for speakers on a 4-channel amplifier

When you first become the owner of a car amplifier, you may encounter misunderstandings in setting up, questions arise: how to set up an amplifier for an acoustic system or subwoofer, why do you need different switches, knobs, buttons and how to use them? There are two ways out: turn to professionals or figure it out yourself, which is not so difficult.

Let's consider several options for setting up the amplifier for different needs. Using the example of the 4-channel amplifier Blaupunkt GTA-475. The methods for adjusting amplifiers may differ, but they have the same meaning. For example, in place of smooth adjustment of the cut with a twist, there may be fixed ones, a switch, etc.

On the amplifier adjustment panel, a line piercing the upper adjustments with the inscription FRONT means that these adjustments adjust the front channels (front), REAR adjustments, adjust the channels to which the rear speakers (rear) or subwoofer are usually connected.

Setting up an amplifier in a four-speaker system, without a subwoofer. In this system, it is easiest to configure; the amplifier filter is disabled, since the speakers reproduce the entire frequency range.

— CROSSOVER SELEKTOR switch in the FLAT position (front, rear)

— LEVEL to position 8V (front, rear)

— BASS BOOST at 0dB (front, rear)

On the radio, we set the volume to 80-90% so that there is a power reserve, since some songs play loudly, while others are quiet. It’s good if the equalizer of the radio is already configured; if not, we set everything to zero or select from the list of preset settings (POP, ROCK, CLASSIC, etc.) based on interests. Turn on the music and slowly turn LEVEL clockwise to the maximum value, at which the sound is loudest and clearest. If necessary, you can add BASS BOOST.

Setting up an amplifier for a subwoofer and speakers. Let's assume there are speakers connected to the front channels, and a subwoofer to the rear.

— FRONT — CROSSOVER SELEKTOR to HP position, FI PASS control in the range from 60 to 80Hz

— REAR — CROSSOVER SELEKTOR to LP position, LOW PASS control in the range from 65 to 85Hz

— LEVEL to 0, that is 8V (Front, rear)

— BASS BOOST at 0dB (Front, Rear)

We adjust the sensitivity with the LEVEL control as in the first case of adjusting the amplifier, with one but, the system should sound harmonious, so we adjust the sensitivity (front, rear) to each other. BASS BOOST, if necessary and to taste.

Setting up the amplifier for channel amplification. Typically, channel-by-channel amplification is used for front speakers, where the speakers (midbass) and tweeters are amplified separately.

— Midbass reproduces the entire range, CROSSOVER SELEKTOR in the FLAT position

— For tweeters, HP is turned on, the HI PASS control is in the 250Hz position

When using advanced head units (radio tape recorders), the above methods for adjusting the amplifier may not be applicable, since the radio tape recorder itself is capable of filtering frequencies and adjusting BASS BOOST; all that remains is to adjust the LEVEL on the amplifier.

Source

How to properly set up an amplifier in a car

Selecting the amplifier sensitivity level

Roughly speaking, volume (although this is not entirely true). By turning the knob from a larger number to a smaller one, we increase it.

Filters

LPF - filters out low frequencies.

HPF - filters out high frequencies.

Let's say, by setting the low-pass filter control to 50 Hz, the speaker will receive frequencies up to 50 Hz.

Attention: on different amplifiers, options are possible - either it will be a selector with a choice of filter type and one regulator, or separate regulators for the high-pass filter and low-pass filter.

In some amplifiers, it is possible to turn on both filters, so by turning on the low-pass filter and the high-pass filter, we can get a band-pass filter. For example, by setting the low-pass filter to 200 Hz and the high-pass filter to 50 Hz, the acoustics will reproduce a signal in the range from 50 to 200 Hz, respectively.

Some older amplifier models have fixed filters. Filtering is selected using the selector.

Subsonic

For the most part, it is necessary for subwoofers (in bass reflex design) But it can also be used as a high-pass filter.

There are also subsonics with a fixed filtering frequency.

Bass Boost

Allows you to increase the volume at a certain frequency.

Attention: the bass boost frequency is usually fixed. But some amplifiers have an additional regulator that allows you to select the required frequency.

There are also bass boosts with a fixed gain.

Phase regulator

Serves to coordinate the operation of the subwoofer with the front. And in general for more precise tuning.

There are also fixed phase controls.

How to connect two amplifiers with a bridge

Master/Slave

Amplifiers designed for this connection have MASTER/SLAVE switches. Therefore, with a bridge connection, one of the amplifiers will be the Master and the second will be the Slave, set the switches in this accordance. It is to the Master that the interconnect cables (tulips) from the radio are connected, and from it, through a mono connector, the signal is transmitted to the Slave (with a single interconnect). This is done so that all settings and control are carried out from one monoblock - from the Master, that is, gain, filters, subsonic, etc. will be exhibited only there. There is no need to take Y splitters to try to plug interconnects into the Slave as well.

If the manufacturer claims that the amplifier can operate as a bridge, but there are no Master/Slave switches, then it will have two sockets with similar names - Bridge Input and Bridge Output. In this case, use the Bridge Output jack on the master amplifier and connect it to the Bridge Input jack of the slave amplifier.

Connecting speaker wires

Here, be careful and do not confuse anything: we connect the negative connectors of the two amplifiers to each other; then we connect the plus (+) of the Master to the plus of the subwoofer, and the plus of the Slave to the minus of the subwoofer!

Why was there some kind of bitter experience? or just a warning.

The coils, as Yasen said, are 4 ohms each. So I'm wondering if it's worth it or not?

don't be afraid to cling.

what kind of info is there... judging by one 15A fuse for the subwoofer, it doesn’t work at all... but it’s better to connect it yourself and listen

It will work fine. Just figure out how to correctly set the filters and gains on the amplifier. Or contact someone who knows and can.

will you climb into the trunk to listen to it?

And the way Yasen drew it here is NOT correct. The diagram to the left of the block is drawn correctly, the inscription BRIDGED and a thick line indicate which terminals need to be connected to a bridge!

What information do you need? As far as you can see, the amplifier is weak, approximately 4x30-45 W. (15A fuse) I think you won’t even load half the speaker at its nominal value. Next, look from the reverse side, if there are high-pass cutoff filters, then more or less you can connect, and then only 2 channels with a bridge, or parallel the input so that everything comes from one channel. and it’s difficult (almost impossible) to achieve absolutely the same level when coming out from different channels. If there is no filter, then it should be on the radio, but not all of them have it. It's better to sell and buy what suits you, rather than try to make something you won't be happy with anyway.

I drew the ash tree correctly, since on the mustache in the same places (painted white in the photo) there is Bridged. But I’m interested in the different channels of the wuxia and one 2-winding speaker because I don’t have any experience in this area!

What is an amplifier for?

The audio system, as you know, has long been of interest to the driver. If earlier more attention was paid to the chassis or technical serviceability of the vehicle, today, on the contrary, it is to comfort. And car audio occupies one of the leading positions in this regard. In order for the audio system to play at full power, recently they began to connect a subwoofer - a separate speaker that reproduces low frequencies. It is connected through an amplifier. Today there are three types of amplifiers installed in a car.

Note. The amplifier is installed in the car so that the driver and his passengers can fully enjoy the sound of music or watching a movie or video. For this reason, a properly selected and installed amplifier is of great benefit.

Of the above types of amplifier, 4-channel is considered the most popular, because it can be used for both 4 and 2 speakers, as well as a subwoofer. In addition, the 4-channel amplifier can be used to connect 2 subwoofers.

Note. The best and most widespread manufacturers of high-quality 4-channel amplifiers are considered to be models from the brands Alpin, Blaupunkt, Magnat, etc.

A 4-channel amplifier can be of two more classes:

• AV amplifier (see How to connect an amplifier to a car radio: your own master), that is, analog, with high amplification quality, but low efficiency and low power;
• D is a digital amplifier, already with high efficiency and high power, but low quality.

Connector groups

A 4-channel amplifier has not one, but several groups of outputs. Let's look at them in more detail:

• Power connectors or outputs for power supplies.
• 12 V outputs, which are powered by the battery. When connecting wires to these contacts, it is recommended to also install a fuse at a remote distance from the battery.
• REM output, where the control cable from the head unit is connected.
• Output 1.3 GND or simply grounding. Designed to be connected to the machine ground.
• Inputs for speakers and subwoofers, with plus/minus contacts.
• The lineinput and output outputs are linear for RCA or simply tulip wires.

Simple tips for connecting an amplifier to speakers

There seems to be nothing personal here, just suggestions: Keep calm and be a panda. Message from X-tream. Message from sab Message from SerYoGa. Message from Yuri Why does the teacher say: “Look, guys, this is Italy, it looks like a boot.”

What are you talking about anyway? Italy is like paradise. You look like a boot. And if you connect the front and rear via the cable, and install an active sub, what do you think? BMW Club Saratov. Guys, more ideas. Posted by Trahtebesdoh. Take the drive, run the front speakers and sub through the amplifier, and run the rear speakers straight from your head. Or look for a second amp. I won the main victory in my life 9 months before my birth. In general, the sound is not enough, and the rear passengers really want sound too.

Setting up an amplifier for a Magnat subwoofer

In order to correctly and accurately adjust the ULF for a low-frequency speaker system, you need to follow some simple rules. First of all, you can't rush. Magnat is a complex electronic device, so it will take 3-4 hours to fine-tune it. In order for all acoustic systems to sound high quality, you need to use familiar musical fragments, where you can clearly feel the correct sound, which can be easily distinguished from a distorted one. In order to accurately catch the slightest negative nuances in the sound, the test should be carried out in the driver's seat with the doors and windows of the car interior closed. There is no need to limit yourself to playing only one fragment. The best thing to do would be to listen to music in different genres. There are no strict guidelines on the parameters of filters and phase, since much here depends on the individual characteristics of hearing. The main thing is to get the most accurate coordination between the bass and the front speakers. If all settings are made accurately, the low-frequency acoustic channel will work loudly, but harmoniously, without interrupting other speakers or falling out of the overall sound.