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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.


4,000 kr
Add to cart
(19 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. All controlled by our "easy-to-use" app.

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

19 reviews for Addon C-SUB
Lauri M.

incredible bass

Karl Andre

The sub I bought didn’t work but the one I already have is awesome and gives such depth but must be strategically placed on a very solid surface

Jack Stephenson

Amazing subwoofer really gives a extra feeling to my music

Edoardo Bortolaso
Jimmy Sarzosa

Pairs up great with my Addon C-10


Great Sound with A26. App should be improved.

Vukasin Aleksic

This is the worst product and the worst customer service EVER. DO NOT BUY their products because – 1. Wireless sub is working ONLY when you play music via audio pro app (which doesn’t work at all), the sound is lagging if you want to watch movie, and support is NOT RESPONDING to emails, support tickets, NOTHING. This is a fraud!!!

Karim E.

Nice design, good sound. Connectivity and app unbelievably poor. You need to get Spotify connect for it to use it within as multi-room system. please Audio Pro upgrade to airplay 2!

Andrew H.

Funky bass, quiet & unobtrusive looks. This little cube of wonder brings the vibe home!