Applications
- Large concerts and live performances
- Night clubs
Features
- High-performance dual 21" infra sub-woofer
- Easy to install
- Can be retrofitted into existing venues
- Top Hat
- Rubber feet
RRI 21s
This highly efficient 2800-watt AES Dual 21" infra-woofer uses a double suspension driver. The infra-sub woofer has been designed for extended low frequency without losing integrity. It's best suited for high-energy nightclubs where the customer wants to experience the lowest octave. Suitable for use in both fixed installations and mobile applications, the RRi 21s is used for demanding applications.
The CSC Maestro MS 26 controller is configured to perform with its pre-loaded EQ and limiter functions. RRH 218s and RR 212s are all perfectly matched with the RRi 21s.


