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Addon C-SUB

Small in size, mighty in bass.

The wireless Addon C-SUB multiroom subwoofer is distinctively small, but delivers a massive punch that you really can feel. It’s a perfect 23cm cube of heart-pounding, definitive bass enjoyment. Wireless auto connect to the nearest Audio Pro multiroom speaker, or play old school with cable. Easy to place, easy to love. More bass to your music, with less wire clutter.


450 $
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(5 reviews)
Bass proof your home

For a deeper sensation of your music, the C-Sub matches perfectly with any Audio Pro multiconnected speakers. You can add as many C-SUB subwoofers as you like in your multiroom setup. In the app everybody can play their personal music on which ever speaker they want. Or all of them. Play from internet streaming services, from a computer or NAS in your network, or music on your phone. Everything controlled by the App Of Simplicity.

Get the Audio Pro app for multiroom play.

Download here
Play nice. Everywhere.

Multiroom sound and multi person usage. Group and play, set to left/right for stereo pairs. Play all together. Or not. You choose.

Control the power

Power is nothing without control. The Addon Sub has variable crossover and you can shift phase for easier placement and adjustment to your room.

Feel your music, physically

Our focus since the beginning in 1978 has been better bass from small enclosures. Powered subwoofers is in our blood.

Technical Specification
Addon C-SUB
Amplifiers & Drivers

Amplifier: 200W Digital class D Woofer: 6.5” long throw
Passive radiators: 2 x 7.5"


Wi-fi + RCA in
Wireless Auto Connect for simple setup


Range: 30 - 120 Hz
Variable crossover: 50-120Hz
Variable phase: 0-180 degrees


HxWxD: 230 x 230 x 230 mm

Multiroom Functionality

Audio Pro Multiroom
Free app for iOS & Android

Network Compability

802.11 b/g/n, 2.4 GHz only

Audio formats

MP3, WMA, AAC, FLAC, Apple Lossless

5 reviews for Addon C-SUB

Fantastic sound. Really deep bass, surprising from such a small enclosure. Easy to set up as well. Great product.

Perry S.

With all of the emphasis that AudioPro puts on bass output, I am disappointed with the small range of adjustment of the bass. Perhaps my Addon T-14 speakers are not a good match for this subwoofer?


Adding the Addon C-Sub to my Addon C3s was the best decision I could have made. The C-Sub adds that rich deep punch to my music that makes listening to my music that much better. Being able to add this subwoofer to my C3s wirelessly is perfect. I could not be happier. Thank you Audio Pro!


Not your issue, but it’s frustrating that Spotify requires a premium account to play to this speaker.