---
product_id: 607398786
title: "51KSC6504 KS-Series 6.5\" Coaxial Speakers with .75\" tweeters, 4-Ohm, Pair"
brand: "kicker"
price: "€ 261.08"
currency: EUR
in_stock: true
reviews_count: 5
category: "Kicker"
url: https://www.desertcart.pt/products/607398786-51ksc6504-ks-series-6-5-coaxial-speakers-with-75-tweeters
store_origin: PT
region: Portugal
---

# 43Hz-21kHz frequency range 100W RMS power handling 1.8in shallow mount depth 51KSC6504 KS-Series 6.5" Coaxial Speakers with .75" tweeters, 4-Ohm, Pair

**Brand:** kicker
**Price:** € 261.08
**Availability:** ✅ In Stock

## Summary

> 🎶 Elevate your drive with sound that commands attention!

## Quick Answers

- **What is this?** 51KSC6504 KS-Series 6.5" Coaxial Speakers with .75" tweeters, 4-Ohm, Pair by kicker
- **How much does it cost?** € 261.08 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/607398786-51ksc6504-ks-series-6-5-coaxial-speakers-with-75-tweeters)

## Best For

- kicker enthusiasts

## Why This Product

- Trusted kicker brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Ready to Upgrade Your Ride:** Includes grilles and supports 15-100W amps for seamless integration and powerful performance.
- • **Universal Fit, Zero Mod Hassle:** Ultra-thin design with minimal tweeter protrusion fits almost every vehicle perfectly.
- • **Precision Polypropylene Woofers:** Internally dampened cones with rubber surrounds deliver punchy, distortion-free sound.
- • **Silk-Dome Tweeters for Crystal Highs:** Neodymium magnet tweeters produce natural, silky treble that pleases audiophiles.
- • **Concert-Level Volume, Refined Clarity:** Play loud without losing smooth, detailed highs and rich midbass.

## Overview

The KICKER 51KSC6504 KS-Series 6.5" Coaxial Speakers combine high power handling (up to 100W RMS) with a wide frequency response (43Hz-21kHz) to deliver concert-quality audio in your vehicle. Featuring polypropylene woofers with rubber surrounds and silk-dome tweeters with neodymium magnets, these speakers produce clear highs and deep midbass. Their shallow 1.8-inch mounting depth and minimal tweeter protrusion ensure a hassle-free, universal fit behind factory grilles, making them an ideal upgrade for discerning drivers seeking premium sound without modifications.

## Description

Kicker 51KSC6504 KS Series 6.5" Coaxial Speakers With .75" Tweeters, 4ohm KICKER’s elite KS-Series Coaxial Speakers upgrade your audio to new levels of accuracy with extended frequency response and the smoothest highs. Potent Performance - KICKER KS-Series Speakers let you play at concert-like volume, yet maintain the smoothness and subtlety to please even the most selective ear. Internally dampened polypropylene cones and durable rubber surrounds assist the woofers in creating precise midrange and midbass, while high-quality silk-dome tweeters deliver natural, detailed highs. With less than a 2-inch mounting depth and one millimeter of tweeter protrusion, the KSC650 is a perfect fit in almost every vehicle on the road today. They work best with 15 to 100 watts of recommended power. See below for more details. High power handling Silk-dome tweeters for a smooth sound Polypropylene woofer and tough rubber surrounds Thin-mount design easily fits behind factory grilles Grilles included Specifications - Speaker Design: 2-Way Woofer [in, mm]: 6-1/2, 160 Tweeter [in, mm]: ¾, 20 Rated Impedance [Ω]: 4 Recommended Amplifier Power [Watts RMS]: 100 Sensitivity [1W, 1m]: 90 Frequency Response [Hz]: 43-21k Mounting Hole Diameter [in, mm]: 4-13/16, 123 Top Mount Depth [in, mm]: 1-13/16, 46 Bottom Mount Depth [in,mm]: 2-3/16, 54 Tweeter Protrusion [in,mm]: 5/16, 8 Grilles: Yes Tweeter Magnet Material: Neodymium Tweeter Dome Material: Silk Woofer Cone Material: Polypropylene Woofer Surround Material: Rubber

Review: Best set of speakers to fit into and replace oem Subaru liberty GT my10 dash mid range speakers.
Review: Good set of speakers, definitely raise some hell especially when you see how tiny they’re when you open the box. I have these a the kicker 6 3/4 in both of my trucks, even did the same set in my cousins truck. Using these series of speakers in 3 trucks tells you they’re good value for the money, an everyone comments how good my trucks sound when they hear it.

## Features

- KICKER KS-Series Speakers let you play at concert-like volume, yet maintain the smoothness and subtlety to please even the most selective ear.
- The high-performance woofers utilize internally dampened polypropylene cones and tough rubber surrounds for outstanding midrange detail and pounding bass!
- Completely redesigned with new cones, voice coils and crossovers, KS-Series Coaxial Speakers are a serious upgrade from your factory sound.
- Featuring zero (or minimal) tweeter protrusion, you get a perfect fit in almost every vehicle on the road today, without modifications.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CRLGQBCN |
| Best Sellers Rank | #42,238 in Electronics ( See Top 100 in Electronics ) #119 in Coaxial Car Speakers |
| Colour | white |
| Compatible devices | Car Audio System |
| Control method | Touch |
| Impedance | 4 Ohms |
| Included components | 51KSC6504 |
| Is waterproof | False |
| Item model number | 51KSC6504 |
| Item weight | 2.59 kg |
| Manufacturer | KICKER |
| Material | Polypropylene, Rubber, Silk |
| Model name | 51KSC6504 |
| Mounting type | Flush Mount |
| Number of Items | 1 |
| Power source | Corded Electric |
| Product dimensions | 8.4D x 23.1W x 45.7H centimeters |
| Recommended uses for product | Automotive |
| Speaker size | 6.5 Inches |
| Speaker type | Coaxial |
| Special features | Hi Res Audio |
| Surround sound channel configuration | 2.0 |
| Unit count | 1 Count |
| Warranty type | Limited |

## Product Details

- **Audio output mode:** Stereo
- **Brand:** KICKER
- **Connectivity technology:** Wired
- **Frequency response:** 21000 Hz
- **Speaker maximum output power:** 200 Watts

## Images

![51KSC6504 KS-Series 6.5" Coaxial Speakers with .75" tweeters, 4-Ohm, Pair - Image 1](https://m.media-amazon.com/images/I/81lwbwgmAnL.jpg)

## Available Options

This product comes in different **Model** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by K***M on 4 February 2025*

Best set of speakers to fit into and replace oem Subaru liberty GT my10 dash mid range speakers.

### ⭐⭐⭐⭐⭐ Review
*by J***A on 2 January 2026*

Good set of speakers, definitely raise some hell especially when you see how tiny they’re when you open the box. I have these a the kicker 6 3/4 in both of my trucks, even did the same set in my cousins truck. Using these series of speakers in 3 trucks tells you they’re good value for the money, an everyone comments how good my trucks sound when they hear it.

### ⭐⭐⭐⭐⭐ Review
*by A***É on 28 November 2025*

bon haut parleur et de bonne qualité. le son est agréable. le tout était super bien emballé. bien content de mon achat

## Frequently Bought Together

- Kicker 51KSC6504 KS-Series 6.5" Coaxial Speakers with .75" tweeters, 4-Ohm, Pair
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**Shop now:** [https://www.desertcart.pt/products/607398786-51ksc6504-ks-series-6-5-coaxial-speakers-with-75-tweeters](https://www.desertcart.pt/products/607398786-51ksc6504-ks-series-6-5-coaxial-speakers-with-75-tweeters)

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*Product available on Desertcart Portugal*
*Store origin: PT*
*Last updated: 2026-03-20*