The ATC C4CA (formerly C3CA) is a high-performance active centre channel loudspeaker designed for accurate dialogue and seamless integration in surround systems. It delivers precise, clear, and controlled sound for home cinema and multi-channel setups.
In addition, the C4CA is designed as a compact alternative to the larger C6CA centre channel. Therefore, it is an ideal solution when space is limited but high performance is still required in C6-based systems.
Active centre channel design
The C4CA uses twin ATC 150mm SL mid/bass drivers. In addition, each driver uses a massive 9kg shielded motor assembly with in-house hand-wound precision flat wire coils. As a result, it delivers excellent control, low distortion, and natural midrange clarity.
Built-in amplification and active control
The speaker includes a 250W Class A/B ATC amplifier module. Furthermore, active filters and overload protection ensure stable and safe operation. Therefore, it maintains clean dynamics and precise performance even at higher output levels.
System matching and performance
The C4CA is voiced to match ATC C6 series systems. As a result, it provides smooth tonal integration across the front soundstage. In addition, it ensures consistent dialogue clarity and strong imaging in multichannel setups.
Flexible installation and finish options
The C4CA is available in custom veneer finishes to order. In addition, featured finishes include Rosewood. Therefore, it can be matched visually to a wide range of speaker systems and interiors.
Build and reliability
The C4CA is hand built in the UK and designed for long-term reliability. In addition, it is covered by ATC’s 6-year warranty.
Main Features
- Active centre channel loudspeaker (formerly C3CA)
- Renamed to C4CA in January 2020
- Suitable substitute for C6CA centre in compact systems
- Twin ATC 150mm SL mid/bass drivers
- 9kg shielded motor assemblies per driver
- In-house hand-wound precision flat wire coils
- 250W Class A/B active amplifier module
- Active filters and overload protection
- Custom veneer finishes available (Yew featured)
- 6-year manufacturer warranty
Recommended Configuration
| Front Channels / Rear Surround | SCM11 |
| Centre Channel | C3C |
| Sub Bass | C1 Sub |
| Upgrade Path | Front/Rear SCM19, SCM40, C6 Sub |



