【KICKER KSC504 | 10cm Coaxial Speakers Suitable for Replacing the OEM Unit】

The sound from the factory speakers seems muffled. Vocals feel a little too far away. When you turn up the volume, the sound starts to feel harsh.

However, it’s not the kind of change that requires major door modifications or replacing the entire system at once. That’s exactly where the KICKER KSC504 is an easy option to consider.

These are 10cm-class speakers, but when you swap them from the OEM setup, the contours of vocals and instruments become easier to hear, and differences in the amount of musical information are also more noticeable. While keeping that energetic KICKER character, the silk-dome tweeter helps prevent the high frequencies from becoming too sharp, making it a model that’s easy to enjoy during your everyday commute or shopping time.

Another feature is how straightforwardly they reproduce—from the midrange down to the foundation of the bass—thanks to the combination of an internally damped polypropylene woofer and a rubber surround. As a step up from factory speakers, I think it’s a realistic choice for anyone who wants to feel the difference in sound right away.

Slim, space-friendly design for vehicles with limited installation room

The KSC504 has a shallow mounting depth and a low tweeter protrusion, making it a slimline design.

When choosing speakers, it’s important not only that they perform well, but also that they fit the vehicle without strain. In cars with limited mounting space, selecting without checking depth clearance and interference around the speaker may mean you’ll need modifications later.

The KSC504 is sized so that replacement at the OEM location is relatively easy to imagine, but the actual mounting method varies depending on the vehicle model, trim level, and the shape of the factory speaker. Since some vehicles may require mounting parts and/or light modification, it’s safest to judge by checking the actual car.

Even with the same speakers, sound changes depending on the installation method

Swapping speakers will change the sound, but it’s not as simple as “install them and you’re done.”

How the sound comes together depends on the finishing of parts you can’t easily see—such as the condition of the mounting surface, how the speaker is fixed, how gaps around it are sealed, and how the wiring is bundled. With an OEM speaker replacement, it’s crucial to fit everything properly to match the vehicle-side conditions.

At Log On, we consider a practical installation method while checking the door and dashboard-side structures for each vehicle model, as well as the combination with the OEM head unit. If it were me, I wouldn’t choose based solely on the performance of the speakers by themselves—I’d confirm how much you want to improve the sound with your current system before deciding.

If needed, you can also consider deadening or upgrading the system, but you don’t have to start by expanding to a large-scale plan. First, we’ll sort out together how to make the most of the KSC504—while listening to how you use your car and what you like.

Who the KICKER KSC504 is for

• You feel the OEM speaker sound is thin or muffled
• You want vocals to be a bit easier to understand
• You want a sound that won’t tire you out even when you turn up the volume
• You want to replace speakers while utilizing the OEM mounting location
• You want to change the sound while avoiding major modifications
• You want to start with a speaker replacement

The KICKER KSC504 is a well-balanced 10cm coaxial speaker that doesn’t change things too drastically, yet makes the difference from the OEM setup easy to feel.

Depending on the vehicle model and your current audio system, the installation approach and recommended combinations will vary. It’s fine even if you’re at the stage of asking things like, “Will it suit my car?” or “How much will it change with only a speaker replacement?” We’ll guide you in a way that’s less likely to change later, while confirming your vehicle.

■ Main Specifications / Spec

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[Basic Information]
Product name: KSC504
Brand: KICKER
Type: 10cm coaxial speakers

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[Performance]
Recommended input: 15–75W
Tweeter: Silk dome
Woofer material: Polypropylene
Surround: Rubber

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[Installation / Compatibility]
Mounting depth: Less than 2 inches
Tweeter protrusion: Less than 1mm
Feature: Slim design
Compatibility: Designed to fit many vehicle models easily
Compatible grille: KSC5G

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• Organized based on publicly available manufacturer information.
• Since mounting parts and/or the need for modification differ by vehicle model, you must confirm the vehicle before installation.