Approx 21" Subwoofers
SB Audience Nero-21SW1100D 21" Subwoofer
Product ID: Nero-21SW1100D
SB Audience Nero-21SW1100D 21" Paper Cone Subwoofer- 540mm- 8 ohm- 101 dB
SB Audience Rosso-21SW800 21" Subwoofer
Product ID: Rosso-21SW800
SB Audience Rosso-21SW800 21" Paper Cone Subwoofer with 113mm VC- 540mm- 8 ohm- 98dB