JVC CS-J620 300W 6.5″ 2-Way Coaxial Car Speakers Review

Having the right speakers is crucial to the quality of sound you get. With a lousy sound system or the wrong speakers, you will not enjoy top-quality from your car or home system. But, if you love listening to quality music in your car, the JVC CS-J620 300W speakers are worth a try.

These speakers are some of the latest speaker models from JVC KENWOOD Corporation. The two-way coaxial car speakers, (which means they have all the drivers and audio components you need to install them), measure only 6.5 inches, and are designed to produce excellent sound quality with very little to no distortion.

The JVC CS-J620 speakers also feature relatively small impedance which makes them compatible with different amplifiers. In addition, they have a high sensitivity and produce good quality music at only 300W, all thanks to the with high-quality materials they are made from.

JVC CS-620 Speaker Specifications

The JVC CS-620 speaker features a hybrid surround and a mica cone that is built into a steel-stamped frame. This feature ensures that the speakers exceed the performance of other OEM 6-1/2″ speakers. Unlike a traditional OEM speaker that demands high-end amplifiers to deliver excellent sound, the CS-J620 can work with a modest amplifier to reach optimum performance.

Other general specifications of the JVC CS-620 are:

  • They have a shallow tweeter design
  • 1 inch Poly-Ether Imide balanced tweeter
  • Frequency response of 35 to 22,000 Hz
  • Mounting tabs and screws
  • A sensitivity of 92 dB
  • Narrow mount design
  • They include extension cables and disconnects
  • 4 ohms impedance
  • RMS power handling of 30 watts each
  • Top-mount depth of 1-23/32″
  • Black ABS composite grills
  • Pre-arranged holes for flexible mounting options
  • Impedance (Per Voice Coil):4 ohms
  • Peak Power Handling of 300 watts each

The two 6-1/2″ speakers also have grills, a balanced dome tweeter design, a cloth, rubber, and hybrid surround, and a recommended power range of 5 to 40 watts RMS in each channel.

Other Features and Benefits

Compared to factory speakers, the JVC CS-J620 speakers are built for excellent sound and last longer. To add to their specs and features, these wireless speakers will also offer you:

High-Frequency Response

With a frequency range of 33-22000 Hz, the speakers respond quickly and give a clear natural sound. They are very sensitive, and this makes them better than similar speakers. The JVC CS-J620 speakers can also generate sound at low and high frequencies.

Sleek Design and High-Quality

The JVC CS-J620 speakers are quite stylish and are built with high-quality long lasting materials. The grills are made with strong ABS composite material to protect the woofer cones from foreign objects without blocking the sound

. The woofer cones are made of quality attractive aluminum that is also heat resistant, ferrite magnet, and rigid elastic mica material.

Unlike other tweeters, these tweeters consist of Neodymium magnet and Poly-Either Imide, which are very strong and durable materials. The hybrid rubber material surrounding the speakers ensures that they can handle stress. It also protects them from compression and speedy wear and tear.

Each speaker unit measures 14 inches, 8.5 inches, and 8.3 inches in length, width, and height, respectively, weighs 5.2 pounds and has a 1.7 inches top mounting depth.

Superb Sound Quality

When compared to similar speakers, the woofer and tweeter features and specifications of the JVC CS-J620 speakers ensure they deliver excellent sound quality. In addition, the voice coils and cones are made from heat-resistant material; they will still deliver superb sound and performance even in high heat.

Better Performance

The pair of speakers include a high-quality and well-balanced dome tweeter that can handle high frequencies much better than OEM drivers. Because of the materials that the tweeters are made from, they can reach 22 000Hz frequency zenith and handle mid-range and low frequencies. The combination of the speakers’ features and materials makes them a worthy upgrade from OEM drivers.

Engineered for Easy Installation

With a shallow 1-26/32 inch frame, the JVC CS-J620 is easy to install. Installing the speaker does not require much expertise or experience. Its narrow structure allows easy handling during installation, and since the speaker has a pre-arranged hole pattern, you can modify it to fit a precise car mount pattern. The speaker can also be moved to various positions in your car without complications.

For installations that might need some modifications, JVC KENWOOD provides mounting tabs and screws that can be used to install the speakers as needed. This sets them apart from their competitors.


  • It is easy to install
  • Affordable
  • It has an excellent sound quality
  • Includes various mounting hole options


  • Will deliver poor sound quality if poorly installed

Wrapping UP

The JVC CS-J620 car speakers are ideal for car enthusiasts who enjoy listening to quality music as they drive. These speakers have a sleek design making them easy to handle. Since one does not need to have any specific skills to install them, you can quickly enjoy the quality sound with deeper bass and save money on installation.

You may also read our review on Elac SUB1010 120-Watt 10” Powered Subwoofer

Avatar for Jamie K. Martin

Jamie K. Martin holds a degree in Audio engineering from Husson University, Bangor. Martin spends most of his time testing and trying the technology he writes about to ensure that he provides first-hand information to our customers from all walks of life.

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