Canton Atelier InWall 11C white

With the Atelier series revamped in 2025, Canton is offering an in-wall center speaker that meets a growing demand: getting cinema sound without making aesthetic compromises. The InWall 11C inherits the proven technologies of the German brand while adopting a form factor designed for media walls and installations where every centimeter counts. A 3-way speaker weighing 13 kg, equipped with two 174 mm drivers and passive radiators, all in under 10 cm of depth.

A 3-way configuration in a constrained format

The InWall 11C uses a horizontal architecture with two 174 mm mid-bass drivers flanking a central 25 mm tweeter. This D’Appolito configuration promotes even sound dispersion and precise voice localization, two highly sought-after qualities for a center speaker.

The mid-bass driver cones are made of aluminum-titanium, coated with a black finish (hence the ATB designation, for Aluminium Titan Black). This composite material combines rigidity and lightness, enabling fast and controlled movement. Canton also employs its Wave Surround technology here: a multi-fold surround that allows for a greater cone excursion without deformation. The increased excursion results in deeper bass despite the cabinet’s limited internal volume.

The 25 mm AB (Aluminium Black) tweeter incorporates an acoustic lens that widens dispersion in the high frequencies. This is particularly useful in a living room where listeners are not all seated exactly on the speaker axis.

Two aluminum passive radiators complete the system. They take over from a traditional bass-reflex port to reinforce low-end presence, with a rated frequency response extending down to 32 Hz.

Dimensions designed for architectural integration

The speaker measures 115 cm wide, 32.5 cm high, and just 9.6 cm deep. In-wall mounting requires a cavity 8.2 cm deep, making it compatible with most standard drywall partitions. The required wall cutout is 111 × 28.5 cm.

The fabric front grille attaches magnetically and deliberately extends beyond the dimensions of the chassis. This is no accident: it hides the edges of the cutout, the mounting clips, and any finishing imperfections around the opening. Once installed, only this textile surface is flush with the wall. The snap-in folding clip system ensures secure mounting in different types of walls, from drywall to solid masonry.

The 13 kg weight is significant and requires a wall structure capable of supporting it. In a lightweight partition, additional reinforcement may be necessary.

Passive design requiring a suitable amplifier

The InWall 11C is a passive speaker. It requires an amplifier or home cinema processor capable of delivering sufficient power. With a sensitivity of 89.5 dB (at 2.83 V / 1 m), it remains relatively easy to drive. Impedance varies between 4 and 8 ohms depending on frequency, a typical behavior for 3-way speakers.

Canton recommends the Smart Amp 5.1 S2 as a partner for this speaker, but any amplifier capable of delivering between 50 and 200 W into a 4-ohm load will be suitable. Connection is via screw terminals, accessible from the rear before in-wall installation. The cables run behind the partition, making the setup completely invisible once finished.

Technical specifications

Acoustic performance

• Type: in-wall loudspeaker (InWall)
• Acoustic principle: 3-way, bass-reflex with passive radiator
• Admissible power
  • Nominal: 140 W
  • Music: 200 W
• Frequency response: 32 – 40000 Hz
• Impedance: 4 – 8 ohms
• Sensitivity (2.83 V / 1 m): 89.5 dB
• Crossover frequency: 3000 Hz

Transducers

• Tweeter: 1 × 25 mm aluminum-manganese
• Mid-bass drivers: 2 × 174 mm aluminum, Wave surround
• Aluminum passive radiators for bass reinforcement

Dimensions and installation

• Dimensions (W × H × D): 115 × 32.5 × 9.6 cm
• Mounting depth: 8.2 cm
• Cutout dimensions: 22.4 × 70.4 cm
• Weight: 13.1 kg

Scope of delivery

• Atelier 1150 loudspeaker
• InWall mounting kit
• Front decorative frame
• Documentation

General information

• High-end in-wall loudspeaker with installation kit included
• Powerful 3-way system with passive radiators for deep bass
• High-rigidity aluminum drivers with Wave surround technology
• Aluminum-manganese tweeter for precise, detailed highs
• Discreet design with elegant decorative frame
• Ideal for home cinema, media wall, and integrated hi-fi installations