KEF Ci3160RLb-THX THX In-Wall Subwoofer
£1,149
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Sold asSingle
Impedance4Ω
Warranty2 years
KEF Ci3160RLb-THX THX In-Wall Subwoofer
£1,149
£957.50 ex VAT
Order by 1pm Mon–Fri for same-day dispatch
Free tracked UK delivery · Next day £11.99
30-day returns · full manufacturer warranty
Grille included as standard
Amplifier required
The Ci3160RLb-THX must be driven by KEF's KASA500 subwoofer amplifier, sold separately. One KASA500 powers up to two Ci3160RLb-THX.
Need speaker cable?
Allow about 10m per speaker for a typical run back to the amplifier. Webro 16/2 LSZH (low smoke, zero halogen) is the right cable for runs in ceilings and walls.
The KEF Ci3160RLb-THX is an in-wall subwoofer for serious home cinemas, THX certified to Ultra and Select level. Three high-output 6.5in sub-bass drivers on a heavy aluminium baffle give the depth and impact of a traditional KEF subwoofer from a speaker that sits flush in the wall, matching the Ci3160RLM-THX in size.
Why we like it
- Three 160mm (6.5in) sub-bass drivers
- Bass down to 20Hz (±6dB), 92dB sensitivity
- Same 660 x 209mm cut-out as the Ci3160RLM-THX for a matching wall
- THX certified to Ultra and Select level
Installation notes
The Ci3160RLb-THX needs a 660 x 209mm cut-out and 88.5mm mounting depth from the surface. It must be driven by KEF's KASA500 subwoofer amplifier, sold separately. One KASA500 can power up to two Ci3160RLb-THX subwoofers.
Specifications
| Nominal Impedance | 4 Ohms |
| Sensitivity | 92dB (2.83V/1m) |
| Frequency Response | 20Hz - 140Hz (±6dB), open-backed |
| Drive Units | LF: 3 x 160mm (6.5in) |
| Amplifier | KEF KASA500 (sold separately) |
| Product Dimensions (H x W x D) | 680 x 230 x 96mm |
| Cut-out Dimensions (H x W) | 660 x 209mm |
| Mounting Depth | 88.5mm |
| Net Weight | 10.9kg |
Questions we get asked
Does it come with a grille?
Yes. Every ceiling and in-wall speaker we sell comes with its grille in the box. Manufacturer photos often show the speaker with the grille removed so you can see the drivers, but the grille is always included.
Will it fit my wall?
You'll need at least 88mm of depth behind the wall surface. Standard plasterboard ceilings with joists are usually fine; check for pipes, cables and insulation before cutting. Not sure? Send us a photo or plan and we'll check it for you.
Is it sold singly or as a pair?
Priced per speaker. Add the quantity you need; most rooms use a pair.
When will it arrive?
Orders placed by 1pm Monday to Friday are dispatched the same day. Standard tracked delivery is £7.99, or free on orders over £50; next working day delivery is £11.99. Delivery details.
Can I return it?
Yes. Unused items can be returned within 30 days of delivery, and every product carries the full manufacturer warranty. Returns & warranty.