Monitor Audio C1S 5" In-Ceiling Speaker
If the ceiling has a bedroom or other living space above it, or is part of an escape route, building regulations require each speaker to have a fire hood. Hoods also cut sound leaking into the room above.
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.
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Monitor Audio Creator Series is sold by quotation. Choose your models and quantities, and we'll email you a quote with a secure link to pay online, normally within one working day.
The Monitor Audio C1S is a compact, affordable in-ceiling speaker built for installers and homeowners who want dependable, great-sounding background audio without a complicated fit. It suits kitchens, offices, shops, restaurants and any room where a discreet speaker is needed for everyday listening.
Why we like it
- 5" C-CAM mid-bass driver paired with a 1" C-CAM tweeter delivers clear, natural sound with impressive detail for its size
- UD Waveguide shapes tweeter output for a wider, more even listening area
- Quik-Link connector makes wiring fast and secure, with no tools required
- Tri-Grip II fixings hold the speaker firmly in place, reducing vibration and rattle
- Low-profile, paintable white grille disappears into the ceiling finish
Installation notes
The C1S needs a 171mm round cut-out and a mounting depth of 99mm, so check loft or ceiling void clearance before fitting. A pre-construction bracket (CS-B) is available for new-build projects. For background music setups, pair a pair of C1S speakers with a compact streaming amplifier such as a Sonos Amp or WiiM Amp to add multi-room streaming and simple control from a phone or tablet.
Specifications
| System Format | 2-Way |
| Frequency Response (-6dB) | 40Hz - 30kHz |
| Nominal Impedance | 8 ohms |
| Minimum Impedance | 6.6 ohms @ 150Hz |
| Sensitivity | 84dB (2.83Vrms @ 1m) |
| Maximum Peak SPL | 110dB |
| Continuous Power Handling | 50W RMS |
| Recommended Amplifier Power | 25-100W RMS at 8 ohms |
| Drive Units | 1 x 5" C-CAM mid-bass, 1 x 1" C-CAM tweeter |
| Crossover Frequency | 3kHz |
| Mounting Depth | 99mm |
| Cut-Out Diameter | 171mm |
| External Dimensions | 201 x 201 x 103mm |
| Weight | 1.4kg |