JVC CS-J6820 6 x 8-Inch 2-Way Coaxial Speakers

The JVC CS-J6820 is a pair of 6 x 8-inch, 2-way coaxial car speakers designed for vehicles that use this oval speaker size. They offer a straightforward replacement path for worn or limited factory speakers while retaining a compact 59 mm mounting depth. With 4-ohm impedance and 30 watts RMS power handling, they are suited to compatible factory radios or modest aftermarket amplification.

Each speaker combines a 15 x 20 cm mica-cone woofer with a 1-inch balanced tweeter. This coaxial layout places the high-frequency driver within the woofer assembly, helping provide full-range sound from a single factory-style speaker location. The specified 35 Hz to 22 kHz frequency response covers bass, midrange, and treble duties for everyday in-car listening.

The mica woofer cone is paired with a hybrid rubber-and-cloth surround. This construction is designed to support cone movement while maintaining the speaker's compact installation profile. A ferrite woofer magnet provides the motor structure for the low- and mid-frequency driver.

For upper-frequency detail, the CS-J6820 uses a 2.5 cm Poly-Ether Imide balanced tweeter. Its 92 dB/W.m sensitivity specification can help it produce useful output from lower-powered car audio systems. The speaker is rated for 250 watts peak power, with the 30-watt RMS rating being the more useful figure for amplifier matching.

These speakers are intended for 6 x 8-inch vehicle locations, but physical fit should be checked before purchase because factory openings, mounting patterns, and panel clearance vary by vehicle. Their 59 mm mounting depth is an important clearance measurement for doors, rear decks, and other factory locations. The CS-J6820 can be used as a focused replacement upgrade or as part of a system with a compatible head unit and properly matched amplifier.

Key Features

• 6 x 8-Inch Coaxial Design: Combines woofer and tweeter functions in each speaker assembly.
• 30W RMS Power Handling: Supports matching with compatible factory radios and modest amplifiers.
• 250W Peak Rating: Provides stated short-term peak power capacity.
• Mica Woofer Cone: Uses a lightweight cone material for the main driver.
• 1-Inch Balanced Tweeter: Adds dedicated high-frequency reproduction within the coaxial design.
• 59 mm Mounting Depth: Helps determine clearance behind the mounting surface.

Design & Installation

The CS-J6820 uses a mica-cone woofer, hybrid rubber-and-cloth surround, ferrite woofer magnet, and Poly-Ether Imide balanced tweeter. The oval 15 x 20 cm frame is designed for 6 x 8-inch speaker positions. JVC specifies a speaker weight of 0.53 kg without a grille and a magnet mass of 153 g.

Confirm the vehicle's factory opening, mounting pattern, and available rear clearance before installation; the specified mounting depth is 59 mm. The supplied documentation lists eight 4 x 25 mm mounting screws and two speaker lead assemblies. Observe polarity when connecting the leads, and use an amplifier or receiver compatible with 4-ohm speakers and 30 watts RMS per speaker.