Description
DALI ALTECO C-1 On-Wall Surround & Height Speaker
The DALI ALTECO C-1 is a versatile 2-way speaker designed to provide both height-channel and conventional surround sound performance. Supplied as a pair, it can be used as an up-firing Dolby Atmos, DTS:X or Auro-3D height speaker, mounted high on a wall, or positioned close to the listening position as a rear or surround speaker.
The ALTECO C-1 combines a 4½-inch low-loss wood-fibre cone driver with a lightweight 21 mm soft-dome tweeter. DALI’s wood-fibre cone technology uses a combination of fine-grain paper and wood-fibre pulp to create a rigid, lightweight diaphragm with an uneven surface structure that helps minimise unwanted resonance.
One of the key features of the ALTECO C-1 is its Dual Sound Mode. A switch on the front of the speaker changes the dispersion behaviour between an upward/downward-firing configuration and a more direct sound mode. This allows the same speaker to be adapted to different positions and applications.
With a frequency response of 74–26,000 Hz (±3 dB), 83 dB sensitivity, 6 Ω nominal impedance and a maximum SPL of 103 dB, the ALTECO C-1 provides detailed and controlled reproduction for surround effects and height information. DALI recommends amplification between 40 and 100 watts.
The angled cabinet is specifically designed for height applications. When placed on top of front or rear speakers, the ALTECO C-1 can direct sound toward the ceiling to create reflected height effects for compatible immersive audio formats. It can also be wall-mounted as a conventional surround or height speaker.
Technical Specifications
| Specification | Details |
|---|---|
| Brand | DALI |
| Model | ALTECO C-1 |
| Series | ALTECO Series |
| Product Type | On-Wall Surround / Height Speaker |
| Package Quantity | Per Pair |
| Crossover Principle | 2-Way |
| Frequency Response | 74 – 26,000 Hz (±3 dB) |
| Sensitivity | 83 dB @ 2.83 V / 1 m |
| Nominal Impedance | 6 Ω |
| Maximum SPL | 103 dB @ 1 m |
| Recommended Amplifier Power | 40 – 100 W |
| Crossover Frequency | 2,100 Hz |
| High-Frequency Driver | 1 × 21 mm Soft Dome |
| Low/Mid Frequency Driver | 1 × 4½ Inch |
| Low/Mid Diaphragm | Wood Fibre Cone |
| Enclosure Type | Closed |
| Connection | Single Wire / Spring-Loaded Push Button |
| Sound Modes | Dual Sound Mode – Up / Down |
| Recommended Placement | On Speaker / On Wall |
| Recommended Rear-Wall Distance | 1 – 50 cm |
| Dimensions (H × W × D) | 265 × 160 × 200 mm |
| Weight | 2.8 kg per speaker |
Key Features
- Multi-Purpose Design: Can be used as a Dolby Atmos, DTS:X or Auro-3D height speaker, conventional surround speaker or discreet stereo speaker.
- Dual Sound Mode: A front-panel switch allows the speaker’s dispersion behaviour to be changed according to its installation position and application.
- 4½-Inch Wood Fibre Driver: DALI’s low-loss wood-fibre cone provides a lightweight and rigid diaphragm for detailed and controlled low/mid-frequency reproduction.
- 21 mm Soft-Dome Tweeter: The lightweight woven-fabric dome delivers smooth high-frequency reproduction, wide dispersion and low coloration.
- Up-Firing Atmos Application: When placed on top of front or rear speakers, the angled cabinet directs sound toward the ceiling to reproduce immersive height effects.
- Flexible On-Wall Installation: The ALTECO C-1 can be mounted high on the wall or positioned close to the listening position for rear and surround channels.
- Angled Cabinet Design: The specially shaped cabinet helps optimise sound dispersion for height and surround applications.
- Wide Dispersion: DALI’s wide-dispersion design helps provide an even sound field across a larger listening area.
- Compact Cabinet: Its relatively small footprint makes it easy to integrate into home theatre systems without dominating the room.
- Closed Enclosure: The sealed cabinet design makes the speaker easy to integrate into different room positions without requiring a bass-reflex port.
Ideal For
- Dolby Atmos Home Theatre Systems
- DTS:X Immersive Audio Systems
- Auro-3D Surround Systems
- On-Wall Height Channels
- Rear & Side Surround Channels
- Up-Firing Height Applications
- Compact Stereo Systems
- Premium Home Cinema Rooms
- Custom Residential AV Installations













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