Dali Alteco C-1 Multi-Positional Speakers

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The Dali Alteco C-1s are a pair of multi-positional speakers that will support Dolby Atmos, DTS-X, and Auro-3D enabled movies in a surround setup, bringing a whole new dimension to your home cinema and dropping you in the middle of your movie experience.

Design and Technology

The Dali Alteco C-1s are a pair of multi-positional speakers that are multi-purpose in both their design and their function, as Dali’s goal was to achieve a pair of speakers that work both as a pair of height speakers and a pair of traditional stereo speakers. To do this, the design team at Dali have created a crossover for stereo use, and has made sure to stick with traditional Dali sound design principles, allowing them to create a pair of speakers that fulfils both criteria. These speakers are the perfect solution for anyone who is looking to add height information to a surround sound speaker setup, or simply looking to create an out-of-the-way stereo speaker setup.

Delivering outstanding height information that remains believable, the Dali Alteco C-1 Multi-Positional Speakers will support Dolby Atmos, DTS-X, and Auro-3D enabled movies in a surround setup. When firing up using the ceiling as a reflector, but also when firing down from a position up and under the ceiling, these speakers will deliver the complete surround sound experience, no matter how they are positioned. All of this has been made possible without the need for special equalising in order to enhance the effects from head related transfer function technology – a technology that can be found in Dolby Atmos certifies speakers. The Alteco C-1 will rely only on the height processing that is carried out from within the amplifier, when selected. These stellar design characteristics

Dolby Atmos

Dolby Atmos and DTS:X. Dolby Atmos will open up a whole new dimension in sound, transporting you into your movies with moving audio that will flow all around you, providing unprecedented realism. Dolby Atmos will allow you to enjoy a 5.1 surround sound speaker setup and two additional overhead speakers for the ultimate experience in home theatre. It will even allow for the use of additional Dolby elevation speakers for that added sense of realism.


DTS:X will provide immersive audio, placing sound where it would natural occur in space. This will create a lifelike, multi-dimensional audio experience in the comfort of your home. The improved immersion and realism will truly make it feel as though you are right in the middle of your movie or TV show, living the story along with the characters. DTS Neural:X, the spatial remapping engine included with DTS:X, will offer a new and rejuvenated lease of life to your favourite movies, games and music.

Dual Sound Mode

The angular design, combined with the dual sound mode within the Dali Alteco C-1 Multi-Positional Speakers, allows this speaker to be used in a multitude of different scenarios. Choosinf “UP” on the front baffle switch in order to beam sound waves either straight outwards for a soft downward angle, or select “DOWN” to beam the sound almost completely down for close position listening.

Up-Firing Speaker

The angular design of this speaker also makes it ideal for use as an upward firing speaker. Combining this speaker with a surround receiver will allow it to render height information (which can be found in Dolby Atmos, DTS-X, or Auro-3D surround sound formats), placing it on top of the front speaker, and even on top of the rear speakers in order to offer reflected sound from the ceiling, rendering height information in compatible movies.

Wood Fibre Cones

The low-loss drivers used within the Dali Alteco C-1 Multi-Positional Speakers use a mixture of low-mass paper cones with wood fibre reinforcement that works to give the surface an uneven structure in order to dramatically minimise the resonance of the surface. This will create the best possible reproduction of sound, highlighting every detail within the audio signal.

Soft Dome Tweeter

The dome tweeter within this Dali Alteco C-1 will offer best-in-class resolution with an extended frequency response, wide dispersion and low colouration. Inspired by Dali’s previous high-end models, this tweeter is based on an ultra-lightweight weaved fabric, weighing less than half the market standard at 0.056 mg/mm2.

  • Soft dome tweeter inspired by Dali’s high-end series
  • Dolby Atmos, DTS-X, Auro-3D support
  • Upward and downward firing modes
  • Dual sound modes


More Information
Product Specifications

Frequency Range (+/-3 dB) [Hz]               

74 - 25,000 Hz

Sensitivity (2,83 V/1 m) [dB]      

83.0 dB

Nominal Impedance [ohms]      

6 ohms

Nominal Impedance [ohms]      

6 ohms

Maximum SPL [dB]        

103 dB

Recommended Amplifier Power [W]    

40 - 100 Watt

Crossover Frequency [Hz]          

2,100 Hz

Crossover Principle       


High frequency driver, Quantity              

1 x 21 mm

High frequency driver, Diaphragm type               

Soft Textile Dome

Low frequency driver, Quantity               

1 x 4.5"

Low frequency driver, Diaphragm type

Wood Fibre Cone

Enclosure type 

Closed Box

Connection Input           

Single Wire (Spring loaded push button)

Recommended Placement         


On speaker

Recommended Distance From Wall [cm]            

1 - 100 cm

Dimensions (HxWxD) [mm]      

265 x 160 x 200

Weight [kg]       

2.9 kg

Accessories Included    

Rubber Feet




Your Delivery:

Orders received before 1:00 pm* will be despatched the same day and can be delivered for next working day, (except bank holidays).  For you convenience you can choose multiple shipping options on the checkout page. We will also email with your tracking and dispatch information.

30 Day Returns Policy

HiFix is committed to selling quality products which we hope you will love, we do understand, however, that there maybe a time when you need to exchange or return something you have bought. We really do hope you are pleased with your purchase but should you wish to return anything bought from us, we will be happy to refund or exchange a product within 30 days.

NameSKUQtyLead time
Dali Alteco C-1 Multi-Positional Speakers Black Ash435773In Stock for Immediate Dispatch
Dali Alteco C-1 Multi-Positional Speakers Walnut444922In Stock for Immediate Dispatch
Dali Alteco C-1 Multi-Positional Speakers White444911In Stock for Immediate Dispatch

Warranty information for Dali Speakers:

  Dali Speakers

Dali products are designed and manufactured to the highest quality standards. However, if something does go wrong with the product we are here to help. From your date of purchase your product is warranted against faulty materials or workmanship for a period of 60 months for all Speakers, 24 months for all electronic Products and 24 months for all Subwoofers.

This guarantee applies to all Dali Products including: 5.1 Speaker Systems, Sub Woofers, award winning Book Case and Floorstanding Speakers including Wireless and Bluetooth Speakers Providing you with peace of mind and the assurance of premium quality.

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