The Bag End ID-18PRO or INFRASUB-18 is a self powered subwoofer system employing a direct radiating 18" cone loudspeaker in a sealed enclosure and a 500 Watt power amplifier mounted to an aluminum plate on the back of the enclosure. The amplifier also includes a built in INFRA dual integrator providing a flat acoustical response down to 8 hertz, well below the audible range of human hearing.

Enclosure: 3/4" MDF

Low Frequency Transducer: EL-18T 18" Cone

Amplifier Output Power: 500 Watts continuous sine wave

INFRA Module: 8 Hz dual integrator

System Type: 3 cu. ft. Sealed box

Driver Nominal Impedance: 4 Ohms

Input Connectors: Left, Center, and Right channel line level RCA jacks

Left and Right speaker level spring terminals

Hi-Pass Outputs: Left, Center and Right channel line level RCA jacks

Hi-Pass Filters: 12dB per octave, -6dB at 95 HzAvailable in Studio Black, and high gloss Black and White.

Frequency Response: +/- 3dB 8 Hz to 95 Hz (2 pi Steradians)

Overload Protection: Preset threshold Concealment(tm) circuitry

AC Power: 115 or 230 internal switches

Finish: Black textured paint

Grille: Black nylon cloth on frame

Dimensions: 23.5"h x 21.5"w x 18.5"d, 59.7 cm x 54 cm x 46.3 cm

Weight: 91 lbs. (41.05 kg)

Shipping Dimensions: 30" x 27" x 23.5", 74.3 cm x 67.3 cm x 59.1 cm

Shipping Weight: 103 lbs. (46.72 kg)

Available in Studio Black, and high gloss Black and White.