2.75-inch (70 mm) Component Midrange, with Grille
Sharing key technologies used in our flagship C7 series, the C6-275cm midrange speaker is engineered to deliver crisp, clear performance and high-frequency extension in a variety of existing OEM interior configurations.
Benefiting from JL Audio expertise in motor, suspension and cone modeling systems, the C6 series speakers are designed to play loudly while maintaining smooth, dynamic low-distortion sounds. At the core of C6-275cm is a proprietary DMA-optimized motor system. A flat, linear profile spider promotes linear compliance, while a robust voice coil assembly supports extended power-handling capability and serves to limit thermal compression and distortion at higher volume levels. Each speaker’s frame is outfitted with a screw-on, interchangeable mounting system, including adapter rings to easily fit behind OEM factory trim in dashboard locations.
C6-275cm Component Midrange Features:
- Forged and machined motor plates with DMA-optimized geometries create linear motor force under power, leading to outstanding midrange reproduction, linearity and low distortion
- A flat, linear profile spider promotes linear compliance and outstanding excursion capability
- Robust voice coil construction, forced cooling and optimized moving assembly components maintain low power compression at higher listening levels
- Includes fine mesh grille and adapter rings to fit a variety of OEM dash locations, including GM, Toyota, Ram and many Euro vehicles
Design Bandwidth:
With 48 dB/octave filters: 350 Hz – 4.8 KHz ± 3 dB
With 24 dB/octave filters: 400 Hz – 4.15 KHz ± 3 dB
With 12 dB/octave filters: 450 Hz – 3.3 KHz ± 3 dB
| Continuous Power Handling (RMS) | 50 W |
| Recommended Amplifier Power (RMS) | 25 - 80 W / Ch. |
| Nominal Impedance | 4 Ω |
| Frequency Response | 300 Hz - 10 KHz ± 3 dB |
| Voice Coil Resistance (Re) | 3.58 Ω |
| Free Air Resonance (Fs) | 185 Hz |
| Reference Efficiency (no) | 0.1414% |
| Efficiency | 83.5 dB @ 1W / 1m 89.5 dB @ 1W / 0.5m |
| Sensitivity | 86.50 dB @ 2.83V / 1m |
| Electrical “Q” (Qes) | 0.769 |
| Mechanical “Q” (Qms) | 7.848 |
| Total Speaker “Q” (Qts) | 0.700 |
| Equivalent Compliance (Vas) | 0.0353 cu ft (0.125 L) |
| Moving Mass (Mms) | 4.65 g |
| Mechanical Compliance (Cms) | 0.00031 m/N |
| Magnetic Strength (BL) | 5.03 N/A |
| Effective Piston Area (Sd) | 3.66 in² (0.00236 m²) |
| One Way Linear Excursion (Xmax) | 0.059 in (1.50 mm) |
| Frame Outer Diameter (A) | 2.52 in / 64 mm |
| Bolt Hole Circle Diameter (B) | 3.03 in / 77 mm |
| Mounting Hole Diameter (C) | 2.52 in / 64 mm |
| Grille Tray Outer Diameter (D) | 3.58 in / 91 mm |
| Frontal Grille Protrusion (E) | 0.47 in / 12 mm |
| Mounting Depth (F) | 1.42 in / 36 mm |
| Motor Outer Diameter (G) | 2.72 in / 69 mm |
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:
- 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.
Download C6-275cm Product Manual
USA Limited Warranty: One (1) year from the original date of purchaseWarranty Details
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