"Seeburg Acoustic Line G Sub 1802, Passive High-Performance Subwoofer, Equipped with: 2 x 18"" Neodymium woofer, Power rating: 3000 W AES, 9000 W Peak, Impdeance: 4 ohm, Maximum level: 144 dB, Frequency range: 30 - 200 Hz, Connections: 3x Speaker...