Connecting an auto amplifier to a power supply

How to connect a car amplifier to a computer

The car amplifier serves as an additional device that increases the output sound power, as well as the sound of regular or low-power radio tape recorders. Currently, the market is saturated with this equipment, so it will not be difficult to purchase it. In this case, the main thing is to observe the correspondence of the parameters of the speaker system and the power of the maximum output level of the audio signal.

Apply a signal wire from the source to the amplifier input, connect the speaker wires to the output and the power supply unit itself to the power terminals

However, what if the driver didn’t want to part with his favorite speaker system after selling the old car, or he just needed a high-quality and powerful amplifier for home use.

The main problem in this case will be to find the necessary power source, since car radio tape recorders and amplifiers are designed to work from the vehicle's on-board network, which means that the supply voltage should be constant in the region of 12-14 volts.

In an apartment or a private house, such a voltage can only be organized with the help of additional voltage converters that reduce the value of the standard mains voltage, and also rectify it by making it from alternating current to direct current.

For this you need to know how to connect power to the car amplifier , so as not to damage it and keep the power supply and the amplifier itself operational.

Before considering how to start the amplifier from a computer power supply or other step-down transformer, it is necessary to take into account the basic correspondences of the parameters of electrical equipment:

  • The power of the power supply must match the power of the amplifier at maximum volume;
  • The cross-section of the wires for connection must correspond to the current. For this, the calculated power must be divided by the supply voltage. For example, if the power of the power supply is 200 W, then the wire cross-section should be designed for a current of about 16 Amperes.

It is possible to connect the amplifier to a low-power power supply, but then it will not be possible to increase its output power. This method can be useful only for checking the performance of sound reproducing or amplifying equipment.

How to connect a car amplifier from a power supply

Before how to connect a car amplifier via a power supply from a computer , you need to carefully consider the amplifier terminals. On the rear side of the amplifier, there are three main groups of terminals for connection:

  • Nutrition. They are indicated by the following markings 12V, REM, GND;
  • Linear input. Line IN;
  • The speaker output terminals are designated SPEAKER OUT and RICHT. For 4-channel amplifiers, the output terminals are divided into front and rear.

The connection of the car amplifier to the power supply unit must be performed with the power supply unit disconnected from the outlet, only after the correct connection of all the wires, their reliable fastening, you can insert the plug from the computer unit into an AC outlet. A power connector comes out of the computer unit in which there are two voltages of 5 and 12 volts with a common minus. Often they are marked by color: yellow +12 volts, red + 5 volts, and black negative "-".

Recommendations

You can check them with a multimeter turned on for voltage measurement, as well as by opening the block case and visually making sure of the color marking of the supply wires. To power the car amplifier, you need to take only the yellow and black wires from the power connector.

Further connection steps

A jumper must be installed between the amplifier terminal REM and + 12 Volts. Now you need to simulate the command for the power supply, which is connected to the motherboard in the computer. The command to turn on the power supply is performed by installing a jumper or a conventional switch.

You can find it by the color-coded wires in the second connector that comes out of the power supply and goes to the motherboard. This is often a green or gray wire and should be connected to any of the black wires.

One of the important nuances is that if you use a powerful speaker system at home, then all wires of the same name can be connected into one bundle, at the end of which a tip is installed. This makes it unlikely that the connecting wires will heat up, even with high currents flowing while listening to music at full power.

The signal source can be any player, be it a tablet, smartphone or MP3 player. Without connecting speakers or speakers, the circuit looks like this.

How to connect a car amplifier at home without a block

Connecting a car amplifier at home without a power supply from a personal computer can be done in only two ways:

  1. Using a car battery that will have to be charged regularly, so this method is not popular;
  2. Using a powerful power supply unit (starting from 200 W) connected to the network, designed for an output voltage of 12-14 Volts.

When starting up a car amplifier, you should not use power supplies that work on the principle without a transformer device. They do not contain galvanic isolation, which means that any breakdown can lead to the appearance of a high mains voltage on the low-voltage power terminals of the amplifier, which is 18 times higher than the nominal. This will definitely lead to the failure of sound reproducing equipment.

Be sure to observe the polarity of not only the power supply, but also the connection of speakers and speakers when connecting any automotive equipment.

How to connect a computer to a stereo system

10 Steps to Music with MS

Often, when purchasing a stereo system, the question of saving arises. What to do if speakers, amplifier and digital-to-analog converter Found a budget, but not for a streamer? It's okay, this article will help you "start" the system by introducing a computer into it as a music signal source!

1. USB interface - "our everything"

1. USB interface - "our everything"

Before purchasing a digital-to-analog converter (or an integrated amplifier with a DAC "on board"), take care that the model has a USB interface. An important point is that the USB port must be type B and allow the reception of audio signals, and not only serve to update the firmware from a flash drive (type A). It is the streaming of music from a PC via a USB cable that is the most common today. Home network options will require the creation of a dedicated UPnP server and a separate streamer for the digital-to-analog converter (this is a separate article).

2. Mac OS X or Windows?

2. Mac OS X or Windows?

A lot of copies have been broken on this topic, no clear conclusions have been drawn. Mac OS X is simpler because all the necessary drivers are already included in the operating system kit. Windows is more flexible and easier to customize. Stay on the operating system you're used to.

3. We connect the DAC

3. We connect the DAC

To test the functionality, select your DAC after connection in the operating system audio settings and make sure everything works. However, we do not recommend using such connection options and organizing work through the built-in OS players. Read on to find out which software player to choose.

4. Optimizing the system

4. Optimizing the system

If you have Windows OS, then we carry out the following steps:

- Disable system sounds;

- Disable system sounds;

- Set the operating mode of the Performance processor and assign the work to Background Services;

- Change the power parameters to "High performance";

- Change the power parameters to "High performance";

- Disable background applications and remove them from Startup;

- Disable system updates;

- Disable system updates;

- Disable Windows firewall and antivirus applications;

- Disable window animation;

- Disable window animation;

- Disable the screen saver;

- Disable USB power management;

- Disable USB power management;

- Defragment the hard drive;

- Disable user account control;

- Disable user account control;

- Disable fast loading;

- Disable Bluetooth;

- Installing all the latest updates.

If you have MacOSX:

- Disable all energy saving options;

- Disable Bluetooth;

- Disable File Vault protection.
- Disable File Vault protection.

Important! All described operations are valid for a PC dedicated only for music playback; if you use personal computer and for work, you need to configure switching profiles for different scenarios. Since working on an "optimized" (according to the scheme above) computer on the Internet will be unsafe!

5. Choosing a soft player

We recommend using Roon - this player not only delivers outstanding sound, but also has the ability to automatically catalog your entire media library - and does so with amazing recognition accuracy. The resulting collection is extremely convenient to manage. Roon can also connect your Tidal and other streaming accounts, and the DSD player's capabilities allow you to use the most advanced upsampling algorithms.

Locate the power supply enable connector

6. Quality cable is the key to success

Invest in a quality USB connector - these cables are very important. The USB interface uses two protocols: Bulk (or Control, Interrupt options) - it guarantees delivery, but does not guarantee signal delay and bandwidth (used for transferring files to a PC. And Isochronous - in this case, on the contrary, signal delay is guaranteed and its bandwidth - but delivery is not guaranteed In musical instruments, the latter option is usually used - which means that the effect of a USB cable on sound will not be any different from another cable in the system.

7. Nutrition is as important as the system

Locate the power supply enable connector
Locate the power supply enable connector
Locate the power supply enable connector

"USB 3.0 TYPE B"

There are enough power upgrade systems for PCs on the market - the fact is that switching power supplies and good sound are, frankly, incompatible things. If possible, equip your computer with a high-quality linear power supply - for example, Uptone produces corresponding mods for Apple MacMini.

8. Vibration is evil

The next step is to suppress vibrations that inevitably arise during the work process. For this, you can use anti-vibration feet and special supports.

9. Room correction has become a reality

The easiest way to suppress room mods is to use the Dirac Live system - this software complex, with a USB microphone, will ideally "calibrate" the frequency response to your hall. 10. Oversampling can sometimes be useful While we don't like interference with the audio signal, sometimes upsampling can work well. With a powerful processor on your PC, of ​​course. The Roon player has a corresponding setting - experiment!

The wiring diagram is usually in the box if you purchase a new device. You need to find a connector with the designation "Power on" or "PS OK", possibly other words, but the meaning is the same and there is a turn-on wire.

Denis Repin

Almost all global manufacturers of modern computer power supplies mark this wire in green. However, in older models more than ten years old, this wire may be yellow or purple. If your power supply unit does not have a wiring diagram, then you will need to look at the manufacturer's website or search the Internet for your model.

May 26, 2020 Hi-Fi.ru editorial office Subscribe to our feed in Yandex.Zen

Cut off the wire going to turn on the supply voltage from the connector, remove the insulation from its end

It's just that I decided to write about the difficult things about such frequent questions: How to unzip the cable to connect the amplifier to the computer, what is the dash, how to make them and what is it for, how to check the polarity or, more precisely, to determine where the speakers have plus or minus - do not speak about the quality and other possibly useful tips, thanks to which you will not smoke your equipment by breaking sockets and collective farmers various outputs. Hello again, now is 8 am, as soon as the radio store opens, I'll immediately go and buy the necessary things for this article, but for now I'll tell you in words.

my helper

Cut off the black wire from the connector and also remove the insulation

Yes, this article will be useful for beginners who have no idea how, where and why you need to connect something, and when you bought, for example, a particularly Soviet amplifier, and the uncle seller clamped the coveted cable for connecting to an iPhone and other jokes, then what to do. Yes, guys who are in the subject, you will not need to bombard about writing, I will try to tell and show in the video what and where it is connected as simply as possible, you can better if you add something with practical advice in the comments.

Probably the most common question is how to connect the amplifier to a computer or to a telephone, but you never know where else an inquisitive mind wants to connect. So you go to the store and buy a microphone cable, how many meters you see for yourself what you need, you need a stereo, since you will have two channels and there are also two ears, but not a fact. You also need to buy solder, heat shrinkage for the thickness of your wire, even better soldering acid for tinning the wire, then a soldering iron without it and of course a 3.5 mini jack - but if you connect to the phone, then the plug can be either long or short, and lastly, the 5din plug itself (aka five pins). Next, we strip the cable to the desired length, then you need to tin the wires, you will have two signal outputs and one ground in the video, I will show in more detail. We take the 5din plug, disassemble it, and look where in the center of it 2 is ground, on the sides 3 and 5 we solder the signal. Then we do the same procedure with a jack where the side taps are the signal, and the lower blade is the ground, for speed and ease of soldering, use a drop of acid - I will show in the video. And now the coveted cable is ready. Do the same if you need tulips and I'm not talking about flowers.

There are amplifiers where the output to the speakers is not applied to terminals or screw terminals, but to incomprehensible sticks according to the scientific dash. How many broken dreams have I seen, or rather nests where they just didn’t push in order to somehow pinch or tighten the wires from the speakers, as a rule, these were matches that treacherously broke off and had to be knocked out. And all you need to do is go to the store and ask the seller's aunt or uncle to give you dot-dash plugs. Next, we tinker the wires from the speakers, run them into the jacket of the plug (black casing) and solder where the dot is a plus, and a dash is a minus, and all such a global problem is solved. Yes, I will also tell you how to determine where the plus or minus columns are.

How to understand the polarity of the speakers, or simply where they have a plus or a minus, again everything is simple. We take a 1.5v battery on which plus and minus is applied, we take the wires from the speakers and we hook one wire, for example, to the minus, and the second, briefly connecting to the plus, we look behind the low-frequency speaker, in most cases it should be blown out and thereby we look at the battery and here it is polarity, then mark one wire lead. So we determined the polarity.

  1. Further, you yourself, I think, will be able to assemble the various adapters you already need, for example, I often connect various speakers whose wires come with dash plugs, or simply without plugs. To make it easier to solder adapters with clamps, also to connect these same dashes - but already a mating part, and a lot of variations. The main thing is to try and everything will work out, and it will look better than any matches, twists and so on.
  2. Yes, which connectors and wires to buy, you already see for yourself based on your wallet, even if you live where there are no radio stores, then you can order via the Internet and get down to an interesting business after receiving it by mail. Yes, if you have something to add or want to share some other secret, then write. If the article was useful, then rate it with a plus or down, that's all, although it's all the time at 9 am and it's time to go to the store to buy everything you need to clearly show in the video, all the best and see you! For comfortable use of a computer, as a rule, standard speakers are sufficient, allowing you to fully enjoy the sound. In this article, we will talk about how to connect an amplifier to a PC that can significantly improve the quality of the audio signal at the output. Connecting the amplifier to a PC
  3. Look at the pinout of the wires to understand which one goes to "ground", for sure it will be a black wire

  4. Any amplifier can be connected to a computer, regardless of its manufacturer or model. However, this is only possible with certain components. Step 1: preparation As with almost any other acoustic equipment, to connect an amplifier to a PC, you need a wire with special plugs. "3.5 mm jack - 2 RCA" ... You can buy it in many stores for the corresponding purpose at quite reasonable prices. 10. Oversampling can sometimes be useful If you wish, you can make the desired cable yourself, but for this you need special tools and ready-made plugs. In addition, without proper knowledge, it is better to refuse such an approach so as not to endanger the equipment.
  5. Twist or solder both prepared wires and insulate the connection

  6. In some cases, a USB cable is used as an alternative to standard wire. It can be of several types, but it will definitely be marked on the body with a signature
  7. Cut off the + 12v wires from the connector, strip their ends from insulation, twist them into a bundle and connect all the stripped ends of the wires together

"USB"

  1. ... The cable should be selected, having read in advance the comparison of the types of plugs attached by us.
  2. Connect all the black wires together by cutting them off from the connector and stripping the insulation at the ends

  3. You will also need speakers whose power must match the parameters of the amplifier. If we neglect this nuance, significant sound distortions are possible at the output. Hi-Fi.ru editorial office Note: As an alternative to speakers, you can use a music center or home theater. See also: Connecting a music center to a PCConnecting a home theater to a PCHow to connect a subwoofer to a PC Step 2: Connect The process of connecting the amplifier to a computer is the most difficult stage, since the operation of the entire sound system depends on the correct execution of actions. You need to do the following set of actions, depending on the cable you selected. .
  4. Now fix the yellow + 12v wires twisted into a bundle on the amplifier terminal with the "+" or "+ 12v" sign

  5. 3.5 mm jack - 2 RCA Disconnect the amplifier from the mains. .
  6. Next, fasten the twisted black wire harness to the terminal of the car amplifier with the sign "-"

Connect speakers or any additional equipment to it. This can be done using

"Tulips"

or by connecting the contacts directly (depending on the type of device). Step 1: preparation Locate the connectors on the amplifier

Connect the signal source, speakers and our power supply to the amplifier

"AUX"

Connect the signal wire from the source to the amplifier input, connect the speaker wires of the speakers to the output, and connect the PSU itself to the power terminals

or

"LINE IN"

At this stage, you can already apply voltage to the power supply and test its performance.

and connect the pre-purchased cable to them

, taking into account the color marking.

To make it easier to control the power supply, you can slightly improve the wiring diagram. To do this, in step 4, you need to install the switch by connecting both wires to the switch. It will now be possible to turn off and on the supply voltage with this toggle switch, and not with a plug into the outlet.The second plug must be connected to the speaker input on the PC case. Often the connector you want is colored light green. To make it easier to control the power supply, you can slightly improve the wiring diagram. To do this, in step 4, you need to install the switch by connecting both wires to the switch. It will now be possible to turn off and on the supply voltage with this toggle switch, and not with a plug into the outlet.USB cable

Unplug the amplifier and connect the speakers to it in advance.

Find the block on the case

and connect the appropriate plug. It could be like
Connecting the computer's power supply to the car amplifier
"USB 3.0 TYPE A"

and

"USB 3.0 TYPE B"

The other end of the wire must be connected to the PC. Please note that this connection requires a port "USB 3.0" connect car amplifier to computerNow the connection process can be considered complete and proceed directly to the check.

Step 3: check

First, the amplifier must be connected to the high-voltage network and put into operation mode using the appropriate switch. When switching on, be sure to set the minimum volume on the amplifier. connect the car amplifier from the power supply

After connecting the amplifier, you must immediately check. To do this, just play some music or video with sound. See also: Programs for playing music on a PC After the actions taken, the sound can be controlled both on the amplifier itself and through the system tools on the computer. Conclusion By following the steps in the instructions, you will probably be able to connect an amplifier or other similar equipment to your PC. If you have additional questions regarding certain nuances of the described process, ask us in the comments. We are glad that we were able to help you solve the problem.

Describe what didn't work out for you. Our specialists will try to answer as quickly as possible.

Did this article help you? WELL NO A jumper must be installed between the amplifier terminal REM and + 12 Volts

Levchuk Alexander Nikolaevich © Although many home computer owners have simple "compo-speakers" for personal listening to music in high quality, it is not appropriate to listen to real music on such trash, such "compo-pukals" will rather be a voice acting for entertainment purposes or background sound.

How to connect an amplifier to a computer

First, the amplifier must be connected to the high-voltage network and put into operation mode using the appropriate switch. When switching on, be sure to set the minimum volume on the amplifier.

After connecting the amplifier, you must immediately check. To do this, just play some music or video with sound. If you have a normal sound system, then for this you need to connect the amplifier to your computer. How to connect a Soviet amplifier to a computer, how to solder a cable, where the speakers have plus and so on

After the actions taken, the sound can be controlled both on the amplifier itself and through the system tools on the computer. The amplifier provides extra power to drive large acoustics while maintaining sound without distortion. Traditional stereo the amplifier has RCA connectors that receive sound from the computer and amplify it; new stereos have a USB input. In any case, connecting the amplifier to a computer is easy and takes only a few minutes.

Step 1
Step 1

Describe what didn't work out for you. using the appropriate switch. When switching on, be sure to set the minimum volume on the amplifier. connect car amplifier to computer

Did this article help you? Turn on the amplifier and computer. Step 2

Levchuk Alexander Nikolaevich © Find the audio ports on your computer. They are round, they are color-coded on the back of the computer - for an amplifier, the output jack will be light green. Insert the 3.5mm stereo plug into the jack.

Step 3
Step 3

Place the RCA audio plug on the back of the amplifier. They are grouped in pairs, with one connector in each pair in red. Each set is marked according to function; you need to look for a pair labeled "AUX". Connect the red RCA plug to the adapter cable to the red RCA plug,

and then plug the remaining RCA plug into the other jack in the pair.

Step 4 Turn on the amplifier. Set the amplifier input switch to "AUX" Example of 3.5 mm jack cable - 2 RCAStep 5 Turn on your computer. Click the speaker icon in the system tray of your computer. Click the slider for "Application" and "Device" and set each to about halfway.

Step 6

Turn on the player, start the music. You should hear sound coming from your amplifier's speakers. Adjust the volume control on your stereo amplifier or receiver / dac.

How to connect the amplifier to a computer via a USB cable

Connect the USB cable to the USB port on your computer.
Connect the USB cable to the USB port on your computer.

Locate the USB connector on the back of the amplifier. The socket should be labeled "USB". It will have a different shape than the one on your computer: the USB standard is square, and the mini USB is rectangular, but much smaller than the computer connector. Plug the USB cable into the jack on the amplifier. SUPRA USB 2.0 A-MINI B BLUE 1M overview Right click on the speaker icon in the system tray of your computer, located in the lower right corner of your screen. Click the Playback Devices button. A tabbed window will open containing a list of playback devices; Your amplifier / dac should be one of them. Click on an amplifier in the list and select it. Click on the speaker icon. Click the slider for "Application" or "Device" and set each to about halfway.

Homemade cable 3.5 mm jack - 2 RCA

Step 7

Turn on the player, start the music. You should hear sound coming from your amplifier's speakers. Adjust the volume control on your stereo amplifier or receiver.

Tips on how to connect the amplifier to a computer

Table of possible USB connectors and plugs

If you hear music coming out of only one speaker - left or right, double check the RCA connectors on the back of the amplifier. You may have plugged into the wrong socket.

Just

unplug and connect it to the "AUX" jack.

  1. Distorted sound can also result from an excessive signal from the computer. Click the speaker icon in the system tray to lower the volume setting as needed.
  2. Warnings on how to connect your amplifier to your computer
  3. Before turning on the computer, set the volume control on the amplifier to its minimum value. Turn it up to a moderate level when your System is ready.
  4. This action prevents loud popping and boom from the amplifier, which could potentially damage your speakers.
  5. Supra USB 2.0 A-B Blue review
  6. I hope this explanation of "How to Connect an Amplifier to a Computer" helped a little. Please leave comments below so I can get back to you.
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  1. VIDEO
  2. Example of an amplifier with suitable speakers

    Connecting the car amplifier to a home audio system using a computer power supply is quite a feasible task. Unless, of course, you fulfill several prerequisites. It so happens that in the household there is a good car amplifier left over from your old car.

    So, just such a device can serve you well in building a sound system for a desktop computer or laptop. However, before undertaking the implementation of this project, it is necessary to calculate all the electrical parameters of the power supply intended for use. That is, to study all its capabilities when working with heavy loads.

  3. First of all, you need to know that car amplifiers are designed for an on-board supply voltage of 12-14v, obtained from a battery, and with a large current consumption. In our case, a power supply from an AT or ATX computer may well be suitable. There are some computer power supplies that provide a very large current in the + 12V power path.
  4. Wiring the speakers to the amplifier

  5. Based on the characteristics of the most budgetary power supplies, which are now freely sold in retail, they can support a current of 12A. But modern powerful models, respectively, are expensive, capable of delivering a colossal current to the load - 50A-70A.
  6. The process of connecting 2 RCA to an amplifier

    How to connect the car amplifier to the computer's power supply

  7. Step by step steps
  8. Connecting 3.5 mm jack to computer

  9. Need to find the power supply connector
  10. Example of contacts on the body of a sound amplifier

  11. You need to cut the power wire from the connector block and remove a small section of insulation from the end
  12. Ability to connect a USB cable to the amplifier

  13. We cut off the black wire "earth" from the connecting block, and in the same way we clean the end of the conductor
  14. Example of a USB cable for connecting an amplifier

  15. Twist or solder the stripped wires and wrap insulating tape around the connection
  16. Front panel of the amplifier with settings

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  18. The process of using the program to listen to music

  19. Now connect all + 12v power wires

Next, you need to connect all the wires going to "minus" into one bundle, after cutting them off from the connector and removing the insulation from the end of the wire

Now, the yellow + 12V wires twisted into a bundle should be fixed on the amplifier terminal with the "+" sign

Setting up audio on the PC amplifier

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Next, the black wire harness must be connected to the amplifier terminal with the sign "-"

To connect the positive + 12v wire to the "REM" source on the car amplifier, use a separate piece of wire

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