KICKER 51KSC41004 KS-Series 4x10 Coaxial Speakers – 4-Ohm Pair with 0.5" Tweeters

Experience concert-inspired sound in your car

The KICKER KS-Series 4x10 coaxial speakers are designed to bring a more engaging listening experience to everyday drives. Expect clearer mids, more defined highs, and bass that feels present without overpowering the balance of your music. This is not a guaranteed result, but a possibility many listeners notice when upgrading from factory speakers.

With a focus on musical detail, these speakers aim to render songs with a sense of space and energy. You may hear more vocal articulation, tighter drum hits, and a broader soundstage as you move through your library at various volumes.

What makes KS-Series stand out

The KS-Series has been redesigned with new cones, voice coils, and crossovers to improve overall sound quality. The woofers use internally dampened polypropylene cones paired with rugged rubber surrounds for enhanced midrange precision and solid bass response.

• Redesigned cones, voice coils, and crossovers for improved dynamics
• Internally dampened polypropylene cones for controlled midrange
• Rugged rubber surrounds for durable bass delivery
• Low to zero tweeter protrusion for a cleaner install in many vehicles

Fit and installation notes

Thanks to minimal tweeter protrusion, these speakers can often fit without major modifications, making them a practical upgrade for many popular vehicle models. Check your dash and door speaker locations to gauge compatibility and space requirements before installation.

Real-world use cases

Whether you are commuting, road-tripping, or enjoying a workout playlist on the go, KS-Series coaxials are designed to deliver a balanced sound that remains musical as you tune the volume. The combination of refined mids and crisp highs can help vocals stay intelligible while instrumental textures retain detail, creating a more immersive listening experience.

Technical snapshot

Impedance: 4 ohms; Tweeter: 0.5 inches; Format: 4x10 inches. This product is sold as a pair, compatible with common head-unit setups when installed correctly.