If you prefer to have a deeper and extended low frequency response while using the SF series speakers, then the SF118AS is the right choice for you. It offers a high energy boost to those low frequencies, giving your sound that extra punch.
• Professional 18-inch active subwoofer speaker
• High power 500W(RMS), class-D
• Volume control and loop through output
• Protection circuitry with limiter
• 35 mm pole mount socket

SF118AS, SPA01 pole, SF112A
Control and connecting panel

Type: 18-inch subwoofer speaker
Power Amp: 500 W (Class D), RMS
Frequency Response (-10 dB): 38 Hz -135 Hz
Input Sensitivity: Line: 0.775 V (0 dBu)
Max. Peak SPL: 131 dB SPL
Crossover Frequency: 100 Hz
Input Type: Balanced differential line
Impedance: Input: 23 kΩ; Output:280 Ω
Driver: L18AS Ferrite Driver 18" (457.2 mm), 4" coil
Enclosure Material: MDF
Finish: Black
Connectors: Input: XLR3F; Output: XLR3M; Loop Through: XLR3M
AC Connector: Male IEC
Indicators(on rear): Power: Green; Overload: Red
Power Requirements: 115V / 60 Hz; 230V / 50 Hz
Dimensions (H×W×D): 64×55×53 cm(25.5 × 22 × 21 in.)
Net Weight: 42.7 kg (94 lbs)