4642A

The JBL 4642A is a professional‑grade dual 18‑inch bass‑reflex subwoofer system designed for deep, powerful low‑frequency reinforcement in cinema, theater, and large sound reinforcement environments. It employs two large low‑frequency transducers in a tuned enclosure that delivers clean, extended bass down into the lowest audible range. The robust build and high‑power handling make it suitable for continuous use in demanding professional audio systems.

Key Features

• Dual 460 mm (18″) low‑frequency drivers for strong bass output

• Bass‑reflex enclosure that promotes smooth, extended low‑frequency response

• High continuous power handling (approx. 1200 W pink noise, 2400 W program)

• Very low usable response down to around 22 Hz without equalization

• 2241H Vented Gap Cooled (VGC™) drivers for improved thermal handling and reduced compression

• High sensitivity and high maximum sound‑pressure capability

• Symmetrical Field Geometry (SFG™) magnet design for reduced distortion

• Suitable for low‑frequency augmentation in both analog and digital soundtracks