JBL 3739 Dual-15 LF Bass Section Only (HPD3739) - Cinema ScreenArray

JBL 3739 Dual-15 LF Bass Section (HPD3739) – Cinema ScreenArray Low-Frequency Cabinet

The JBL 3739 is a purpose-built low-frequency bass cabinet engineered for cinema and large-venue sound reinforcement systems. This component serves as the foundation of the JBL ScreenArray family, providing controlled, efficient bass reproduction in applications where precision and output are non-negotiable.

Acoustic Performance

Dual M115-8A 15-inch woofers with 64 mm edgewound ribbon voice coils deliver a free-field sensitivity of 104 dB SPL at 2.83 V / 1 m, ensuring authoritative low-end output without excessive amplifier demand. The cabinet is tuned for a 40 Hz to 2 kHz frequency response, integrating seamlessly beneath cinema and theater mid/high-frequency sections.

Electrical & Physical Specifications

The 3739 presents a 4 ohm nominal impedance (minimum 3.5 ohms at 195 Hz) and handles 500 W input power, with 600 W recommended amplifier rating. Connection is via rugged push-terminal binding posts, and the compact footprint of 883 × 762 × 450 mm (34.75 × 30 × 17.75 inches) allows integration into tight theater or auditorium installations.

Key Features

• Dual 15-inch (380 mm) woofers with 2.5-inch (64 mm) edgewound ribbon voice coils
• Mounted in JBL 4509 low-frequency enclosure
• Nominal impedance: 4 ohms (minimum 3.5 ohms at 195 Hz)
• 500 W input power handling; 600 W recommended amplifier
• Free-field sensitivity: 104 dB SPL (2.83 V / 1 m)
• Frequency response: 40 Hz – 2 kHz
• Dimensions: 883 × 762 × 450 mm (34.75 × 30 × 17.75 in)
• Push-terminal binding posts for secure connections
• Component bass cabinet only; requires separate HF or M/HF top section
• Compatible with JBL 3722, 3722N, 3730, and 3732 ScreenArray systems
• Harman Professional Cinema specification
• Limited Quantity availability

Road-tested cinema and theater operators rely on the 3739 for the controlled low-frequency foundation that venues demand—a pure bass cabinet with proven efficiency and integration capability that handles the demands of professional installations night after night.