L8400P
If music and movies are important to you in your life, you need the best technology available today to play today's high-definition formats and achieve powerful, precise sound effects. The JBL L8400P subwoofer can produce such low-frequency sound effects. It is equipped with a 12-inch (300mm) PolyPlas? driver, a cast aluminum frame, a low-reflection IsoPower? baffle, an ultra-rigid enclosure, and a motor structure using HeatScape? and Symmetrical Field Geometry? technology, which can make low-frequency output accurate, pure, and without distortion. In terms of power, this subwoofer relies on a Class D amplifier (capable of producing 600 watts of continuous power and 1200 watts of peak power) to output its bass. All these technologies come together to create compact, heavy bass that you can hear with your ears or feel with your heart.
Power amplifier power (RMS) 600 watts
Peak Power Dynamic Power 1200 Watts;
Dynamic Peak Power measurement is performed by recording the highest peak power produced by the power amplifier at the center voltage. This requires: disabling the limiters, setting the output of the resistive load to equal the minimum impedance of the transducer, using a 50Hz sinusoidal wave, turning on for 3 cycles, and turning off for 17 cycles.
Subwoofer driver unit 12" (300mm) PolyPlas cone with rubber suspension edge, aluminum cast base, HeatScape motor structure, symmetrical geometric magnetic field design (SFG), ultra-large glass fiber voice coil, magnetic short circuit ring
Frequency Response (–3 dB) 22 Hz – Low-Pass Filter Point
Low-pass filter frequency point: 50Hz – 150Hz, continuously adjustable (150Hz when using speaker level wiring).
Input Gold 5-way speaker terminal level; left and right channel levels, switchable to low-frequency effect (LFE)
Output Gold-Plated Five-Way Speaker Terminal Level
Cabinet design - Sealing
Diffuser, Low Diffraction, IsoPower
Dimensions (Height x Width x Depth): 16-1/2" (without legs: 15-1/2") x 15-1/2" x 15-1/2".
（419mm (excluding the legs: 394mm) x 394mm x 394mm）
Each speaker weighs 58 lb (26.4kg).
