JBL Professional 4642A 2" 18" Subwoofer System

When deep, accurate low-frequency reinforcement is mission-critical, the JBL Professional 4642A pro subwoofer system delivers dependable, high-impact bass for large-scale AV and monitoring applications. This dual 18" (460 mm) subwoofer system provides usable output down to 22 Hz and a high 2400W program power capability, so low-frequency effects, alarms and soundtrack content are rendered with authority and low distortion. With a vented direct-radiator enclosure and 100 dB sensitivity, the 4642A produces high SPLs efficiently while maintaining tight transient response—ideal for motion picture theaters, concert sound reinforcement, and monitoring or surveillance command centers that require precise audio verification. The low 4-ohm impedance and rugged driver design offer predictable integration into pro audio systems and long-term reliability under continuous operation. Specify the 4642A for installations that demand uncompromised bass performance and consistent, reference-grade low-end monitoring. Contact our team to configure the 4642A for your theater, live venue or security monitoring room.

• Delivers authoritative, room-filling low end so dialog, effects and alarms are reproduced with impact and clarity
• High program power (2400W) and 1200W continuous handling for reliable, sustained performance under heavy use
• Dual 18" low-frequency transducers extend usable output to 22 Hz for accurate reproduction of subsonic content
• Vented, direct-radiator enclosure and 100 dB sensitivity for efficient, high-SPL operation in large spaces
• Built for pro installations—robust construction and predictable voicing for theaters, live sound, monitoring and security control rooms