C-Link Interspeaker Cable Setup for Multi-Room Audio
By Official KEF US Website | HiFi Speakers, Subwoofers | Published: 2026-10-20
Category: How-to Guides
Learn how to use the C-Link Interspeaker Cable to connect wireless speakers for a seamless multi-room audio experience. Step-by-step guide included.
Quick answer
The C-Link Interspeaker Cable extends the reach of compatible KEF wireless speakers by up to 8 meters, giving you the flexibility to place speakers exactly where you want for multi-room audio.
Why use C-Link for multi-room audio?
Multi-room audio usually relies on a stable wireless signal between speakers. But walls, furniture, and distance can weaken that connection, causing dropouts or latency. C-Link bypasses that problem by physically connecting the two speakers in a stereo pair or a multi-room zone. It ensures a clean, uninterrupted signal path and lets you position the primary speaker near your Wi-Fi router while placing the secondary speaker in a more distant room or corner.
The cable's high tenacity fabric jacket also means it can withstand being run along baseboards or under rugs without damage, making it a practical choice for permanent installations.
Step-by-step C-Link setup for multi-room audio
- 1. Position your primary speaker: Place the primary speaker (the one connected to your network) near your router or hub for the best Wi-Fi signal. Plug it into power and complete the initial KEF Connect app setup without pairing the second speaker yet. Do not pair the second speaker wirelessly before connecting C-Link, or the app may assign them to separate zones instead of a wired link.
- 2. Route the C-Link cable: Unpack the C-Link cable and run it from the primary speaker's Link port to the secondary speaker's Link port. Plan the route to avoid tripping hazards and sharp edges — the fabric jacket is tough, but kinking can still damage internal wires. Measure the actual path before buying: 8 meters sounds generous, but routing around door frames or furniture can eat up length quickly.
- 3. Connect both speakers: Firmly insert the C-Link connectors into the Link ports on both speakers until they click. A loose connection can cause intermittent audio or no sound. Power on the secondary speaker. If the secondary speaker does not auto-detect the link, go to the KEF Connect app and enable the "Wired Connection" option for that zone.
- 4. Configure in the app: Open the KEF Connect app and confirm both speakers appear in the same room/zone. If they show as separate rooms, delete the secondary speaker from the app and re-add it as a wired secondary to the primary. Once wired, the speakers behave as a single zone — you cannot wirelessly group them with other speakers while the cable is in use. Check your multi-room setup before finalizing.
- 5. Test and adjust placement: Play audio and walk around both speaker locations. If you hear crackling or no sound, recheck the port connections. Adjust speaker positions to balance sound coverage. The C-Link cable does not carry power, so keep each speaker within 1.5 meters of a power outlet to avoid clutter.
Product facts
- C-Link Interspeaker Cable: C-Link is an interspeaker cable designed specifically for LSX II LT, measuring 8 meters long to extend reach by 5 meters. This gives you enough extra length to place the secondary speaker in an adjacent room or across a large living area while keeping a wired connection for reliable sound.
C-Link Interspeaker Cable
