660R Double 18″ Vented Sub – Permanent Install Version



This vented double 18” sub woofer was designed with an emphasis on low height to fit under platforms and stages. The 660R uses two upgraded 18” woofers with 4” voice coils. Very tight & punchy with a good combination of low-end frequency range qualities. It is similar in response to the tour version, but has no need for transport hardware.



System TypeVented Subwoofer
Program Power (Watts)4800 Watts
Nominal Impedance (Ohms)4 Ohms
Sensitivity (dB @ 1Watt/1m)101
Max SPL (dB)138
Frequency Response (Hz +/- 3dB)35 – 400 Hz
Crossover Frequency (Hz)80-100 Hz Recommended
Driver Configuration2 x 18″
Inputs2  paralleled NL4 Neutrik Speakon connectors
CornersOn carpeted version
Flying Hardwareno
Bar Handlesno
Enclosure Materials3/4″ 11 Ply Birch
Grille16 Ga. Perforated Steel
Finish / CoveringDuraBlast polyurea coating
Dimensions (DWH xback W, inches)31 5/8 x 48 x 20 inches
Dimensions (DWH xback W, cm)80.3 x 122 x 51 cm
Weight (lbs/kg)160 lbs / 73 kg