Quantum Audio QRS40

Quantum Audio QRS40 QRS Series 4″ 120W Peak Power Handling at 4 Ohm, 3-Way Coaxial Car Speakers (Pair)

We are a Quantum Audio authorized dealer so you get up-to-date, fully warrantied products. Shipping is free to the lower 48 states on everything you order!

What’s Inside?

• • (2) 4″ Coaxial Car Speaker
• • Owner’s Manual

High-Performance Car Audio Speaker System

Experience powerful, precise sound with a lightweight yet rugged polypropylene cone and resilient rubber surround — built to thrive in any car audio setup. The dynamic Mylar dome tweeter combined with a Piezo super tweeter delivers crystal-clear highs and brilliant detail across every track. Upgrade your drive with immersive sound clarity and durability you can count on.

Smooth Bass 4Ω Car Speaker with 120W Peak Power

Enjoy deep, smooth bass with a powerful 10 oz ferric oxide magnet, reaching down to an impressive 50Hz. With 40W RMS and 120W peak power handling, it delivers clean, distortion-free sound perfect for factory or aftermarket systems. Designed at 4Ω impedance, it ensures hassle-free, plug-and-play compatibility with most car audio setups.

High-Efficiency Compact Car Speaker with Wide Audio Range

Upgrade your sound with efficient 89dB sensitivity for louder, clearer audio over factory speakers. Experience a wide 50Hz–25kHz frequency response, delivering crisp highs, balanced mids, and rich bass. Its compact, easy-fit design makes installation a breeze without sacrificing sound performance.