How to Adding Subwoofer To 2 Channel Stereo

Adding a subwoofer can easily improve your 2-channel stereo. Well, we know how to do this in some clever ways. However, subwoofers aren’t always noise cutters. However, it can be helpful at times.

What follows are some important tips for achieving great results.

At audiosk, we’ll see what you have to get. Afterwards, we shall teach you how to hook up the subwoofer with your 2-channel stereo. 

Installing A Subwoofer In A Two Channel Stereo

If you want to add a subwoofer to your 2-channel stereo, note this: We list them here to make it easier for you to do so without any hassles. A clear guide to this part.

  • To prevent any mismatches later, examine carefully each section of your system.
  • The subwoofer should match your room. Therefore, it needs strong modulators to resolve any problems.
  • Where you put it in the room matters a lot.
  • Keep the room temperature okay.
  • If your music system shows any errors, don’t ignore them.
  • You need a good internet and electrical setup.
  • Look at the back of your TV for normal inputs like ports, jacks, and S-Video.
  • Clean the 2 channels with care.
Adding A Subwoofer To A Stereo With Two Channels

If you face issues after adding a Sonos subwoofer to a 2-channel stereo, resetting subwoofer can help. Unplug the subwoofer, hold the pairing button while plugging it back in, and release when the light flashes amber and white. This reset can resolve syncing problems, ensuring the subwoofer works well with your stereo system.

Some Things To Consider Prior to Adding a Subwoofer to a Two Channel Stereo

In this section, we’ll take a look at some of the major characteristics before adding subwoofers to our 2-channel stereo.

1. Make Sure Your Subwoofer is High-Quality

A lot of subwoofers out there aren’t great. This usually happens for two main reasons. The first is the driver. Often, they’re big (bigger than 10 inches), with weak cones, limited movement, bad magnet designs, or they’re made from materials that vibrate too much.

A quick way to test a subwoofer is by tapping its cone. If it sounds like a paper cup, it’s probably making higher sounds than it should, not just the deep bass. It should be totally quiet. Remember, subwoofers are for low bass, not middle-range sounds. If they make middle-range sounds, they can mess up the sound from your main speakers.

2. Match the Subwoofer Size with Your Room

The size of your room plays a big part in the bass quality, more than the speakers themselves. Subwoofers make this even more important. A simple rule is to pick a small subwoofer for small rooms, a medium one for medium rooms, and a large one for big spaces. Do not force a big subwoofer into a small room.

A subwoofer as big as one can surprisingly make a small room too much energy. This will really lack bass sound. The speaker is not the only one affected by the room’s layout. It’s even more true with subwoofers.

A big subwoofer is too much for a small room. Because smaller subs are easier to make more precise. Deep bass notes are difficult for small rooms to reproduce. If a large sub is put in a small room, then its frequency mistakes ruin decent speakers.

3. Balance the Subwoofer with Your Main Speakers

When you’re looking to place your subwoofer in the room, you must first decide if the volume needs increasing or decreasing. This depends to some extent on what kind of sound it is and how loud it is at each place you test. The way to do this is: Have someone else change the position of the subwoofer, while you adjust the settings.

It is also important to test it with the same song or sound each time you move it. If the subwoofer bass and the bass from your main speakers don’t match up well, it can sound off. But the sound becomes weak and empty if there’s not enough bass, heavy and muddled if there’s too much. Therefore, ask someone to lift and shift the subwoofer-you’ll be in charge of everything else.

4. Evaluate the Benefits

A subwoofer can greatly enhance your sound system by overcoming some of the flaws. The most palpable change is that the sound becomes bolder, thicker and more spirited. Thus it’s as if music comes back to life.

Right placement of the subwoofer can make a lot of difference. It makes the soundstage and instrument arrangement clearer. That’s partly why it helps with the bass issues, which promotes a better sounding lower midrange. It’s also a question of how our brains respond to sound.

We can’t get the full enjoyment out of music without the whole range of sounds. However, once you add the absent bass back in, everything is balanced out and the music sounds more natural. This is true of all types of music, but especially if you’re a fan of classical music.

Furthermore, installing a subwoofer to a factory stereo in a 2-channel setup can greatly enhance your listening experience. The process involves connecting the subwoofer to your existing stereo system to add depth and richness to the sound.

5. Double-Check All Connections

Inside the subwoofer, the channels mix together. If your preamp has separate left and right outputs but your subwoofer has just one, use a Y combiner adapter. You can get these for around $5. Also, some subwoofers, like the RELs we offer, have a special high-level input. This connects to the speaker binding pins on your amplifier, even if it doesn’t have a specific subwoofer or preamp output.

This cable doesn’t take power from your amplifier. It just works along with your main speakers. This way, there’s a subwoofer option for every system.

Remember these tips before you set up your subwoofer with a 2-channel stereo. Next, we’ll talk about how to do the setup.

Several Considerations to Make Before Adding a Subwoofer to a Two Channel Stereo
Several Considerations to Make Before Adding a Subwoofer to a Two Channel Stereo

Integrating a Subwoofer into Your 2-Channel System

Let’s talk about setting up a subwoofer for a 2-channel stereo. Just follow these steps. If you run into problems, feel free to reach out to us. Here’s what you need to do:

  1. Connect a speaker cable from your amplifier to the subwoofer. Then, from the subwoofer, run additional speaker cables to your speakers. This way, your main speakers still get most of their power from the sub. High-quality subs have great crossovers for this setup.
  2. Send a line-level signal (using RCAs or XLRs) from your preamp or integrated amp to the sub. If your device has a special “subwoofer out” port, use that. Otherwise, you can use a second pre-out, RCA splitters to split an existing pre-out, or a second pre-out.
  3. Another option is a dedicated crossover, but these can be expensive and tricky to use. It’s often best to let experts handle this, especially if you have a really high-end system.
  4. For a powered sub in a 2-channel music setup, consider brands like SVS, HSU, REL, and Adire (like the Rava for Rava SE). For hi-fi music systems, we recommend REL Acoustics subwoofers. This British company focuses only on subwoofers.
  5. Speed is key for a subwoofer. REL invests a lot in making driver cones that are light yet sturdy. Most subs have big, heavy cones for deep bass, but they’re hard to stop once they move. REL uses materials like aluminum and carbon fiber to make cones that move a lot of air quickly without bending. So, consider using transparent fiber optics for the best results.
Converting a 2-Channel System to a Subwoofer


At audiosk, hooking up a subwoofer with a 2-channel system can be a bit tricky, especially with a gadget like a subwoofer. In our article, we’ve done our best to explain these steps in a simple way. We’ve also carefully covered the safety tips. If you have more questions, please contact us anytime. We’re here to help!

Ciaran Gonzan

Ciaran Gonzan

Ciaran Gonzan is the CEO and founder of Audiosk. He has 25+ years of experience and expertise in audio production, mixing, and mastering across music, film, and gaming.