C6-650cw

6.5' (165 mm) Component Woofer (with Grille)

Born from shared technologies used in our flagship C7 speakers, the C6-650cw component woofer benefits from vast woofer design experience and advanced modeling systems of JL Audio.

Ideal for active systems, the C6-650cw component woofer features a proprietary cast alloy frame outfitted with our Elevated Frame Coolingâ„¢ technology and a DMA-optimized motor system to generate outstanding midbass impact with ultralow distortion.

Passive crossover networks are not included with C6 drivers, as they are designed for active systems. Instead, we recommend a high-quality tuning digital signal processor, such as the JL Audio TwK® DSP, or a VXi amplifier with built-in DSP, with a dedicated amplifier channel for each C6 loudspeaker in the system. Precise setup of equalization, delay and crossover filters will ensure optimal in-vehicle performance.

C6-650cw Component Woofer Features:
• Forged and machined motor plates with DMA-optimized geometries to create linear motor force under power, leading to outstanding midbass impact, linearity and low distortion
• Large diameter, linear profile, flat spider for linear compliance and outstanding excursion capability
• Center cap designed to optimize the high-frequency response of the woofer for seamless transition to a tweeter’s response
• Oversized voice coil for extended power handling capability, minimizing thermal compression and distortion at higher listening levels
• Cast alloy frame with our Elevated Frame Cooling feature
• Includes fine mesh grille

Design Bandwidth:
With 48 dB/octave filters: 55 Hz-6 kHz
With 24 dB/octave filters: 65 Hz-6 kHz
With 12 dB/octave filters: 80 Hz-6 kHz

Component woofers are sold individually and include a plastic grille tray, one fine steel mesh grille and one electroformed JL Audio badge logo.

Dynamic Motor Analysis - DMA Optimized Motor

Summary:
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.

Detailed Information:
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:

1. Linear motor force over the speaker's operational excursion range
2. Consistent motor force with both positive and negative current through the coil
3. 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

Summary:
JL Audio's 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.

Detailed Information:
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 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.

USA Limited Warranty:  One (1) year from the original date of purchaseWarranty Details

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