Car Toys JL Audio PPJLA8
JL Audio CP212W0v3 Ported Enclosed Subwoofer with Amplifier Package
JL Audio JX500/1D
Monoblock Class D Subwoofer Amplifier, 500 W x 1 @ 2 Ω / 300 W x 1 @ 4 Ω - 14.4V
This rugged and reliable Class D monoblock uses a robust MOSFET power supply design that delivers rock-solid bass performance at a very affordable price.
Targeted specifically for subwoofer applications, the JX500/1D includes a variable slope low-pass filter with continuously variable cutoff frequency selection from 50-200 Hz. It also features a variable bass boost at 45 Hz. with up to 12 dB of boost and an optional remote boost control. Dedicated hi-level inputs are included, in addition to conventional low-level RCA inputs, making it easy to integrate with a variety of OEM and aftermarket head units.
Rated Continuous (RMS) Power @ 14.4 V
- @ 4 Ω 300 W RMS x 1
- @ 3 Ω 400 W RMS x 1
- @ 2 Ω 500 W RMS x 1
- @ 1.5 Ω N/A
Rated Continuous (RMS) Power @ 12.5 V
- @ 4 Ω 235 W RMS x 1
- @ 3 Ω 300 W RMS x 1
- @ 2 Ω 410 W RMS x 1
- @ 1.5 Ω N/A
- Frequency Response 10 Hz - 150 Hz (+0, -1dB)
- S/N Ratio, referred to highest rated power >90 dB below rated power (A-weighted, 20 Hz - 20 kHz noise bandwidth)
- S/N Ratio, referred to 1 W >62 dB (A-weighted, 20 Hz - 20 kHz noise bandwidth)
- Damping Factor @ 4 Ω >1000 / 50 Hz
- Damping Factor @ 2 Ω >500 / 50 Hz
- THD+N @ Rated Power <1% @ 2 Ω per Ch.
- Input Voltage Range @ RCA Inputs 200 mV - 4 V RMS
- Input Voltage Range @ High-Level Inputs 2 V - 10 V RMS
- Min Copper Power / Ground Wire Gauge 4 AWG wire
- Fuse Rating 60 A (AFS, AGU or MaxiFuse™)
- Filter Modes Low-Pass only
- Filter Slope (dB/Octave) 12 dB
- Filter Frequency Range 50-200 Hz
- Detented, Calibrated Filter Freq. Potentiometer No
- Filter Defeatable? No
- Infrasonic Filter none
- Bass Boost EQ 0 to +12 dB @ 45 Hz
- Output Polarity Switch No
- Remote Subwoofer Level Control Optional (RBC-1)
- Remote Bass EQ Boost Control No
- Pass-Through Preamp Output Unbuffered
- Height (H) 2.09 in / 53 mm
- Width (W) 7.83 in / 199 mm
- Depth (D) 7.68 in / 195 mm
- Net Weight 4.8 lb / 2.18 kg
Class D Circuitry
Subwoofer-optimized, Class D amplifier circuit delivers high efficiency without sacrificing low-frequency fidelity.
The design of our Class D subwoofer amplifier circuits places a high emphasis on damping of the driven load and low-frequency control. Exceptional efficiency is also achieved, which allows the amplifier to be physically compact and also draws far less current from a vehicle’s electrical system during high-power operation.
JL Audio CP212-W0v3
Enclosed Subwoofer System with Dual 12W0v3-4 Subwoofer Drivers, Dark Gray Carpet (600 W, 2 Ω) - Ported Enclosure
This powerful slot-ported BassWedge™ subwoofer system delivers awesome output at an unsurpassed value.
The slot-port runs along the bottom of the enclosure and fires on the same plane as the woofers to produce excellent extension and response smoothness. The port mouth is flared to minimize air-flow noises.
The ultra-versatile BassWedge™ shape has extended sides so that it can be placed with the woofers firing out or straight down, off the floor of the vehicle. The shape works equally well in forward or rear-firing installations. This gives you plenty of options for tweaking the loading of the enclosure into your vehicle.
This subwoofer system is shipped wired, loaded and ready to connect via a push-button terminal.
Finish: Dark gray, high-grade automotive carpet with "JL AUDIO" embroidery on the top edge and "Slot-Ported BassWedge™" embroidered on the port mouth.
Recommended amplifier power: 150 - 600W
Nominal Impedance: 2 Ω
- Continuous Power Handling (RMS) 600 W
- System Nominal Impedance 2 Ω
- Enclosure Type Slot-ported
- Finish Gray carpet
- Grille Included No
- External Width (W) 31.375 in / 797 mm
- External Height (H) 15.18 in / 386 mm
- External Depth (D1) 20.3 in / 516 mm
- External Top Surface Depth (D2) 15.75 in / 400 mm
- Net Weight 60.3 lb / 27.35 kg
Dynamic Motor Analysis - DMA Optimized Motor
JL Audio's proprietary Dynamic Motor Analysis system is a powerful suite of FEA-based modeling systems, first developed by JL Audio in 1997 and refined over the years to scientifically address the issue of speaker motor linearity. This leads to vastly reduced distortion and faithfully reproduced transients... or put simply: tight, clean, articulate bass.
Since 1997, JL Audio has been at the forefront of Finite Element Analysis-based modeling of loudspeaker motors and suspensions. This research is aimed at decoding what we refer to as the "Loudspeaker Genome"... a project aimed at understanding the true behavior of loudspeakers under power and in motion. A major component of this integrated system is DMA (Dynamic Motor Analysis). Starting with the 15W3 and the W7 Subwoofers in the late 1990's and early 2000's, DMA has played an important role in the design of all JL Audio woofers sold today, including our component woofers.
DMA is a Finite Element Analysis (FEA)-based system, meaning that it takes a large, complex problem, breaks it down into small solution elements for analysis and then assembles the data to form an accurate, "big-picture" solution. DMA's breakthrough is that it actually considers the effects of power through the coil as well as coil/cone position within the framework of a time-domain analysis. This gives us a highly accurate model of a speaker's actual behavior under real power, something that the traditional Thiele-Small models or other low power measurements cannot do. Because DMA does not rely on a steady-state model, it is able to consider shifts in the circuit elements being analyzed. These modeling routines are intense, requiring hours to run for a whole speaker.
DMA is able to analyze the real effects of fluctuating power and excursion upon the magnetic circuit of the motor, specifically the dynamic variations of the "fixed" magnetic field. This delivers intensely valuable information compared to traditional modeling, which assumes that the "fixed" field produced in the air gap by the magnet and the motor plates is unchanging. DMA not only shows that this "fixed" field changes in reaction to the magnetic field created by current flowing through the voice coil, but it helps our engineers arrive at motor solutions that minimize this instability. Analyzing this behavior is critical to understanding the distortion mechanisms of a speaker motor and sheds light on the aspects of motor design that determine truly linear behavior:
Linear motor force over the speaker's operational excursion range
Consistent motor force with both positive and negative current through the coil
Consistent motor force at varying applied power levels
Our ability to fully analyze these aspects of motor behavior allows our transducer engineers to make critical adjustments to motor designs that result in extremely linear, highly stable dynamic loudspeaker motor systems.
The payoff is reduced distortion, improved transient performance and stellar sound quality.
Elevated Frame Cooling (U.S. Patent #6,219,431 & #6,229,902)
JL Audio's patented Elevated Frame Cooling design delivers cool air through slots directly above the top-plate to the voice coil of the speaker. This not only enhances power handling, but also sound quality by minimizing dynamic parameter shifts and power compression.
Many speakers employ venting techniques to enhance voice coil cooling. This is typically accomplished by having big holes in the sides of the frame just below the spider attachment shelf. While it provides a modest cooling benefit, this low-velocity air-flow does not blow directly or strongly on the voice coil.
Our patented design improves upon this cooling technique in a number of ways. By elevating the frame above the top-plate of the motor (via stand-offs integrated into the bottom of the frame) a narrow, high-velocity air-path is created between the bottom surface of the frame and the top surface of the top-plate. This air path leads directly to the voice coil and then turns upward into the spider air cavity. By utilizing the pumping action of the spider through this focused air path, a large volume of cool air hits the coil windings directly.
Another important benefit is that the upper surface of the top-plate (one of the speaker's hottest parts) is directly exposed to cooling air flow, whereas on a conventional design it is isolated from the air flow by the lower flange of the frame. The elevated frame technology greatly increases thermal power handling, reduces compression effects and does so without any additional parts.