JVC

JVC CS-J520X 5.25" 2-Way Coaxial Car Speakers - 250W - Pair

250W30W

JVC's CS-J520X coaxial speakers deliver 250W peak power and crisp two-way sound in a shallow-mount 5.25-inch design.

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Overview

The JVC CS-J520X is a pair of 5.25-inch two-way coaxial car speakers designed as a drop-in upgrade for factory speaker locations. Each speaker pairs a mica cone woofer with a 1-inch poly-ether imide balanced tweeter driven by a neodymium magnet, producing a frequency range from 40Hz to 22,000Hz. The mica cone material provides a rigid yet lightweight diaphragm for controlled midbass response, while the tweeter adds clarity and detail to vocals and higher-frequency instruments. Together, the two-way design delivers a noticeable improvement over stock paper-cone speakers.

Practicality is a strong suit of the CS-J520X. The shallow mounting depth of just 1-23/32 inches (43.5mm) means they fit in tight spaces where deeper speakers cannot, making installation straightforward in a wide range of vehicles. A 91dB sensitivity rating ensures they play efficiently on factory head units without requiring a dedicated amplifier, though they can also handle up to 250W peak (30W RMS) if paired with a modest amp. With a 4-ohm impedance and standard 5.25-inch fitment, they are compatible with most aftermarket and factory systems, making them an accessible first step for anyone looking to improve their in-car listening experience.

Key Features

5-1/4” Mica Cone Woofer – Durable mica cone delivers tight, responsive midbass for a balanced sound upgrade in most factory speaker locations.

1” Balanced Tweeter with Neodymium Magnet – Lightweight poly-ether imide tweeter delivers crisp highs with added detail and clarity.

Shallow 1-23/32” Mounting Depth – Compact design fits tight door or dash spaces with just 1-23/32" (43.5mm) depth for easy installation.

250W Peak / 30W RMS Power – Handles up to 250 watts max power (30W RMS), making it a great match for stock head units or mild amp upgrades.

91dB High Sensitivity Rating – Plays loud and clear even with factory radios thanks to a 91dB sound pressure level for efficient performance.

Specifications

Brand
JVC
Model
CS-J520X
Speaker Size
5.25 inches (5-1/4")
Type
2-Way Coaxial
Peak Power
250W
RMS Power
30W
Frequency Response
40 – 22,000 Hz
Sensitivity
91 dB
Impedance
4 Ohm
Woofer Material
Mica Cone
Tweeter
1" Poly-Ether Imide Balanced Dome, Neodymium Magnet
Mounting Depth
1-23/32" (43.5mm)
Quantity
Pair

Frequently Asked Questions

The mounting depth is just 1-23/32 inches (43.5mm), making them suitable for tight door panels and dash locations.
Yes, with a 91dB sensitivity rating and 30W RMS handling, they are efficient enough to perform well with stock head units.
They are designed for standard 5.25-inch (5-1/4") speaker openings found in many vehicles.
They are sold as a pair, so one purchase gives you two speakers.
The woofer uses a mica cone, which is lightweight and rigid for responsive midbass reproduction.