JL AUDIO 5 x 7 / 6 x 8 Inch Single Component Woofer - C5-570cw-Single

5 x 7 / 6 x 8-inch (125 x 180 mm) Component Woofer

Many people mistakenly believe that an oval speaker cannot perform as well as a round one, leading to many instances of 5.25-inch speakers being installed into 5 x 7-inch openings. JL Audio's engineers have put in the time and effort to create fantastic-sounding speakers that drop into oval openings and deliver equivalent performance to our 6.5-inch (165 mm) round speaker systems... guaranteed. So, don't make the mistake of losing cone area and efficiency by stepping down to a smaller round speaker... these ovals rock.

C5-570cw component woofers are built using Kurt Müller cones and suspensions with die-cast alloy baskets. This woofer benefits from JL Audio's vast woofer design experience and advanced modeling systems.

Passive crossover networks are not included with C5 component drivers, as they are designed for active systems. Instead, we recommend a high-quality tuning DSP, such as the JL Audio TwK™ 88 or D8, and a dedicated amplifier channel for each C5 loudspeaker in the system. Precise setup of equalization, delay and crossover filters will ensure optimal in-vehicle performance.

Design Bandwidth:With 48 dB/octave filters: 50 Hz - 5 kHzWith 24 dB/octave filters: 60 Hz - 5 kHzWith 12 dB/octave filters: 70 Hz - 5 kHz

Sonic character: Smooth and balanced

Sold individually, with one electroformed JL Audio logo. No woofer grilles are included (or available) for this speaker.

General Specifications

Woofer Physical Specifications

Technology

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:

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.

Dr. Kurt Muller & Co.

Summary:

The best sound requires cones and suspensions made to the highest standards in the world.

Detailed Information:

When the goal is superior component woofer performance, the things that truly matter are: consistency in cone mass, cone thickness and suspension compliance. This is why we turn to our partners at Germany's Dr. Kurt Müller & Co. for critical cone and suspension elements in our top-flight component woofers. Their track record of manufacturing precision and meticulous quality control is very well established in the loudspeaker industry; although most loudspeaker manufacturers prefer to avoid the premium that this quality commands.

While it has become fashionable to use stiff, exotic materials for component speaker cones, these tend to create upper mid-range colorations that require aggressive crossover designs and/or equalization to control. By contrast, Müller's low mass, mineral-filled polypropylene cones and butyl rubber surrounds are inherently well damped to deliver an uncolored, neutral midrange without any "artificial flavoring". This keeps crossover design simple and renders a smooth, clean mid-range presentation, on and off axis.

Dr. Kurt Muller & Co. also supplies the symmetrical-roll, hybrid-weave spiders used in the ZR woofers.