The JBL PJ-4000 is a high-performance professional power amplifier engineered to deliver massive headroom and clean, undistorted power to high-demand speaker systems. Built for heavy-duty sound reinforcement, this amplifier is the perfect powerhouse for driving dual subwoofer enclosures, large-scale mid-high cabinets, and club installations that require continuous, reliable output.
Featuring a robust, rack-mountable chassis, the PJ-4000 is built to withstand the demands of the road while protecting your speaker investment with a comprehensive suite of safety features. Its high damping factor ensures tight, punchy low-end control, while its high-efficiency cooling system keeps the internal components operating at peak performance during long worship services or high-energy club nights.
Key Features:
High-Power Output: Engineered to supply clean, high-wattage delivery to drive demanding stage monitors, mid-ranges, and subwoofers.
Dual-Channel Flexibility: Operates seamlessly in Stereo, Parallel, or Bridged Mono modes to adapt to various system configurations.
Smart Thermal Management: Equipped with dual high-speed, temperature-controlled cooling fans to prevent overheating under continuous peak loads.
Complete System Protection: Built-in safeguards against short circuits, thermal overload, DC offset, and clipping to protect both the amplifier and your speakers.
Heavy-Duty Power Supply: Features a high-capacity toroidal transformer designed to maintain low-frequency punch even during sudden power dips.
Professional Connections: Balanced XLR inputs with secure Speakon and binding post outputs for lossless signal delivery.
Technical Specifications:
Amplifier Class: High-efficiency class design
Channels: 2 Channels (Dual Mono/Stereo/Bridge)
Frequency Response: 20 Hz – 20 kHz (\pm0.5 dB)
Signal-to-Noise Ratio: >100 dB
Damping Factor: >400
Input Sensitivity: 0.775V / 1.0V / 1.4V
Connectors: XLR (Input/Thru), Speakon & Binding Posts (Output)
Chassis Size: Standard 19" Rack-Mountable (3U)