The next generation wireless subwoofer for endless versatility and dramatically deeper bass. Compatible only with the DOCK E30.
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A thunderstorm of bass

Take your sound to the next level with this formidable addition to your Orbitsound speaker. This powerful subwoofer will enrich and deepen the bass of your system, creating an impeccably rich and satisfying audio experience.

On show or out of sight

The SUB S4 can suit all spaces, put it on display or tuck it away. Whichever you choose, your audio is unhindered.

Intelligent. Easy.

Smart learning means that you only ever have to pair once. Turn the SUB off and your speaker will react by increasing its bass to compensate. Switch the SUB S4 back on and it'll automatically connect again.

Room rumbling bass

The SUB S4 effortlessly takes over the lowest frequencies, increasing the overall output of your speaker system. The result? An unbelievably big sound from such a small unit.

Bass you can feel

Subtle in appearance and striking in sound, the wireless SUB S4 is designed to blend into any environment. The SUB takes care of the lowest frequencies, leaving the DOCK E30 to take care of the mid and high range frequencies.

Be in total control. Get the Orbitsound app.

Customer reviews

Below you'll find reviews on all Orbitsound products collected by our external review partner, Yotpo. Every review is independently collected from a verified Orbitsound customer and is shown here exactly as the review was left, without any editing from us.

Technical specs

Wireless connectivity
Deepen the bass of your speaker
Place it anywhere, standing up or lying flat
Effortless setup with smart auto-connect
In the box
International power supply
Extra rubber feet (x 4)
Quickstart guide
Freq response
+/- 3dB 40Hz - 185Hz
Response controls
LF: +/- 8dB bass control
1 x 6.25" long throw subwoofer driver
W: 338mm
D: 150mm
H: 325mm
Orbitsound — British audio pioneers
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Free delivery

No matter what you're ordering, Orbitsound will deliver your order free of charge to any address in the UK.

1 year warranty

With every new Orbitsound speaker purchased directly from, we offer a free two year warranty. Any other product or accessory has a one year warranty.

Buy with confidence

We're so confident that you'll love your new Orbitsound speaker that we'll give you 30 days to try it in the comfort of your own home. If you don't like it, simply return it for a full refund. Please note that if there is no fault with the speaker, the customer is liable for postage costs.

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