InVincible 21.1i – a down-firing configuration of the above, to protect the driver in busy high-traffic households, or to allow for placement of a center-speaker on the flat top surface.

Bandwidth：Truly full output (-0 dB), even anechoically, to below 20 Hz
Usable output extends below 15 Hz
Drivers：BilletCore ultra-high-rigidity subwoofer(s) with a diameter of 53 cm (21”)
InVincible 21.1 – single driver
InVincible 21.2 – dual drivers
Amplifier：Up to 6,000 watts RMS (requires a 230 Volt AC hookup, otherwise 3,000 watts)
Dimensions：75x68x68 to 177x68x68 cm (30x27x27 to 70x27x27”) depending on configuration
Weight：111 to 210 kg (244 to 462 lbs) unpackaged, depending on configuration