While it is always ideal to get a laptop hooked up to a proper audio system, we know this can be dreadfully expensive. Thankfully, laptops are audio machines. So, how do you get a laptop hooked up to a PA system? That is what we want to take a look at on this page.

Here, we are going to run you through how you connect a laptop up to a PA system, the equipment you need to use, and the issues that you may face.

how to connect a laptop to a pa system

How To Connect a Laptop to a PA System

Unless you have a laptop specifically designed for audio mixing, there will only be one audio out. This means that you will need to purchase a cable that splits the sound signal. For this, you will need to purchase a Y-cable that splits to either a 1/4″ jack or an RCA, depending on what your mixer uses. You can then plug these cables straight into the mixer and your system should be up and running. That’s really all there is to it.

The Most Important Equipment For Connecting a Laptop to a PA System

We are going to assume that you already have the PA system, so you don’t really need us to walk you through what you need for that PA system. We will, however, walk you through the types of equipment that you should be using when getting that laptop hooked up to the PA.


Your laptop will likely have a headphone output (3.5mm or 1/8″).

You will need to purchase a cable that splits that 3.5mm into two 1/4″ jacks (known as a stereo breakout cable), or an RCA cable. If you can, we suggest that you try and get an RCA. This is because most modern mixers have specific RCA sockets for portable devices such as a laptop.

You should always try to ensure that the cables are as short as possible. This will reduce interference on the line.

DI Box

You won’t always need a DI box. Most modern mixers will allow you to plug a laptop straight into it.

A DI box is ideal for when you only have an XLR input available on the mixer. Nowadays, you can pick up a DI box designed specifically for PA systems fairly easily.

Most Common Issues When Connecting a Laptop To a PA System

First and foremost, you do have to remember that laptops often do not produce the best sound. They do not have dedicated soundcards, instead opting for one built into the motherboard. This means that you cannot expect the laptop to produce the best sound through your PA. If there does seem to be distortion, you can try and turn the laptop sound down a little bit to eliminate it, but there is not much you can do here other than purchase a better laptop.

If the sound seems a bit muddy, then you can invest in a DI box. This will help to shield the input signal, which helps to ensure the highest quality audio comes from your laptop.

If you can’t hear any sound, then you will want to check the cabling from the laptop to the PA system. If the cables are too long, it will impact the sound. If the cables are twisted or broken, it will impact the sound.

Remember, the audio from the laptop is coming from the headphone jack. You will want to double-check that you haven’t muted the headphones on your laptop!

Is It Better To Connect Laptop to DI Box Or Mixer?

Wherever possible, we always suggest that you hook the laptop up to a DI box.

A laptop is always going to be pumping out somewhat muddy tones as they are not really built for awesome music. A DI box will help to reduce unwanted noise pumping into the PA system. It will only be able to clean it up a little bit, but that is better than nothing if you are looking to entertain people through your PA, right?

Honestly, even if you are able to plug your laptop straight into your mixer, you should always get yourself a DI box. Many people note how brilliant that DI box is at reducing hiss and distortion from the line.

Remember, if you buy the right DI box, you won’t need to purchase a Y-Cable for your laptop. This is because the DI box should be able to handle the signal splitting for you, and it will often do so in a far more effective way. After all, there will be fewer cables that the audio needs to travel through. This is going to help protect the audio quality.

A DI box shouldn’t cost too much, nor does it take up a huge amount of space.

Conclusion – How to Connect a Laptop to a PA System

In order to connect a laptop to a PA system, you are going to need the right cables or a DI box.

If you are using cables, then you can pick up a Y-Cable, which will split the audio signal coming from your laptop. This will then plug into the left/right plug sockets on your mixer. It is important that you purchase a Y-Cable suitable for your mixer. This will normally be a 1/4″ splitter, or an RCA.

If you want the best sound quality when you are connecting a laptop to a PA system, then you will need to purchase a DI box. This will help to reduce interference on the audio signal. While there are several different options on the market for DI boxes, you will want to make sure that you choose one specifically designed for laptops and other portable devices.

Do bear in mind that you are never going to be able to get an amazing audio signal from your laptop. However, if you play about with the settings on your mixer and laptop a little bit, you should be able to get settings that are listenable through the PA system, even at large live events.

Thank you for reading our article on How to Connect a Laptop to a PA System!


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