S8 Powered Subwoofer

S8 Powered Subwoofer

The S8 Subwoofer delivers great bass performance and provides low, tight, and smooth bass.


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  • AC power
    Built-in Power Amp
  • RCA Input
    Dual Analog Audio Inputs
  • Bluetooth speakers
    Wireless Ready
  • Front-ported
    Front-Ported Design
  • Acoustically isolated feet
    Isolation Elastomer Feet
S8 Subwoofer

Excellent performance for music, movies, and games. A perfect bass extension for Audioengine powered speakers or as an upgrade to any music system.

Our S8 Subwoofer has an 8″ custom woofer and is small enough to place in a corner or hide behind furniture. The S8 delivers great bass performance and its low, tight, and smooth bass will blend well with the other speakers in your system.



Excellent performance for music & movies
8" custom down-firing woofer
Dual audio inputs

S8 Subwoofer Audioengine
Audioengine S8 wireless subwoofer

Dual audio inputs are included on the rear panel so connecting S8 to all your gear is easy.
An auto-sleep standby feature turns the S8 Subwoofer off when you’re not playing music.

S8 Subwoofer



The S8 Subwoofer has a super-fast woofer designed for audio and home theater performance. It features an anti-resonant steel frame and heavy-duty rubber speaker surround for accurate low end.

The S8’s bottom-firing and front-ported design means you’ll hear quick, precise bass with no distortion, even at higher volume levels.

In other words, S8 is a tight, smooth, and natural-sounding subwoofer.


If you decide to locate the Audioengine S8 away from your powered speakers or AV receiver, check out the Audioengine W3 Wireless Audio Adapter for high-quality wireless.

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What's in the Box

S8 Subwoofer what's in the box
1S8 Powered Subwoofer
1AC power cord
1Mini-jack audio cable, 2 meters (~6.5 ft)
1RCA audio cable, 2 meters (~6.5 ft)
1Microfiber subwoofer bag
1Microfiber cable bag
1Setup guide

Questions & Answers

  • Question:

    How do you set the crossover on the S8?


    The S8s crossover is a variable low-pass filter. This means it variably adjusts how high the S8 will play. Unless the subwoofer is pretty far away, you can usually leave the phase switch set to 0°.  When setting up a new S8, I like to start with the crossover all the way counter clockwise and, with some music I'm familiar with playing, first get the volume "about" right.  After that try making very small adjustments clockwise on the crossover, evaluating each small change from where you'll be listening from most often.  Once it starts sounding like you can localize where the sub is coming from, back it off until you can't again.  You may also need to lower the volume a touch after the crossover is dialed in, or perhaps even while you're dialing it in, depending on the acoustics of the room you're in, and your own preference on how present you'd like the sub to sound.

    Audioengine powered speakers have fixed passive crossovers designed specifically for them; this simply means that they are designed to play the frequency range they produce, so it's not necessary to alter this when adding a subwoofer.  Adding a subwoofer, such as the S8, will pick up where the speakers leave off, extending the low end response.

  • Question:

    Can the S8 subwoofer be used with the A2 desktop speakers? I don't see any audio outputs on the rear of the A2 speakers?


    With the original A2s (not the A2+ model), there are two ways to connect a powered subwoofer to them. The S8 has two inputs and an output, so you could send the audio signal into the subwoofer from your source, and then use the output to connect to the A2s. The other option would be to send the audio signal from your source into the A2s, and then use the opposite connection, meaning the input that is not being used, as an output to connect to the input on your subwoofer. Both inputs on the A2s will act as outputs when audio is sent into either the A or B input; this simply means that if you're sending audio to the mini-stereo input of your A2s, the RCA input will actually output to the subwoofer.

  • Question:

    Can the S8 subwoofer be made wireless?


    Yes!  If you already own an S8, you'd just need a wireless adapter like our W3. If you're looking to buy an S8, consider getting our S8 Wireless that comes with the W3 included.

  • Question:

    Can I use a subwoofer with the B2?


    The B2 was designed to be a sort of stand-alone Bluetooth speaker and is able to receive Bluetooth data and also has a mini-stereo input; because of this, it doesn't have any outputs to connect to the S8.  Since the B2 does have an analog input, if the subwoofer has both inputs and outputs you could connect your source to the Subwoofer's input, and then use a cable to connect it's output to the mini-stereo input of the B2. It's important to note that doing so would only work for the wired input going to the subwoofer, and not for Bluetooth audio streamed directly to the B2.

  • Question:

    What surface should I put my S8 on?


    We typically recommend using the S8 on a carpeted floor or with some padding under the feet if you have it on a hard floor, as you may notice unwanted noise and/or vibrations from the subwoofer feet on a hard surface at higher volumes. It's worth noting that placing your S8 on a carpeted area will not affect the sound.

  • Question:

    How do I control the volume of my S8 subwoofer? Do I have to reach behind the S8 each time I want to raise or lower the volume?


    Most Audioengine powered speakers have variable RCA outputs for use with a subwoofer like the S8 (the exceptions being the B2 and the 512). This means that the output of the speakers and the RCA output will go up and down together. So once you dial in the volume of your S8, you should be able to adjust the volume from the speakers, or your source device. Either way the subwoofer and speakers should stay in balance as the volume is raised and lowered.

  • Question:

    Can I use the P4 passive speakers with the Audioengine S8 sub?


    Yes! You would just need an amp, like our N22, to supply power to the P4 speakers and connect to the S8.

  • Question:

    Does the crossover on the S8 adjust the frequencies played by speakers connected to the RCA line output?


    The S8's crossover is a variable low-pass filter, and will not adjust the audio for the RCA output connection. This is a full range line level output.

  • Question:

    What size are the screws used to secure S8 feet?


    M6 x 40mm, 6mm diameter pan head

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Additional information

Weight 30.3 lbs
Dimensions 16 × 16 × 18 in

Satin Black, Hi-Gloss White