---
product_id: 634189318
title: "Sound Boss Car Speaker SB-CX-61SI Premium 16.51 cm (6.5 inch) 2-Way Coaxial Speakers (Black), Peak Power - 350 W, RMS Power - 70W, Rated Power - 65W"
brand: "sound boss"
price: "142 zł"
currency: PLN
in_stock: true
reviews_count: 2
url: https://www.desertcart.pl/products/634189318-sound-boss-car-speaker-sb-cx-61si-premium-16-51
store_origin: PL
region: Poland
---

# 70W RMS Power Multilayer Mica Matrix Cone 350W Peak Power Sound Boss Car Speaker SB-CX-61SI Premium 16.51 cm (6.5 inch) 2-Way Coaxial Speakers (Black), Peak Power - 350 W, RMS Power - 70W, Rated Power - 65W

**Brand:** sound boss
**Price:** 142 zł
**Availability:** ✅ In Stock

## Summary

> 🎶 Elevate your drive with sound that speaks volumes!

## Quick Answers

- **What is this?** Sound Boss Car Speaker SB-CX-61SI Premium 16.51 cm (6.5 inch) 2-Way Coaxial Speakers (Black), Peak Power - 350 W, RMS Power - 70W, Rated Power - 65W by sound boss
- **How much does it cost?** 142 zł with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/634189318-sound-boss-car-speaker-sb-cx-61si-premium-16-51)

## Best For

- sound boss enthusiasts

## Why This Product

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

## Key Features

- • **Lightweight Yet Durable:** Elastic polymer surround reduces distortion while keeping the speaker agile and long-lasting.
- • **Balanced Frequency Range:** 2-way coaxial design with dome tweeter offers clear highs and deep mids for flawless audio clarity.
- • **Power that Packs a Punch:** 350W peak power delivers booming sound that commands attention on every drive.
- • **Confidence in Every Purchase:** Backed by a 2-year warranty, ensuring reliability and peace of mind on the road.
- • **Crystal-Clear Audio Precision:** Multilayer Mica Matrix Cone ensures rich, responsive sound reproduction for an immersive experience.

## Overview

The Sound Boss SB-CX-61SI is a premium 6.5-inch 2-way coaxial car speaker delivering up to 350W peak power and 70W RMS for powerful, clear audio. Featuring a multilayer mica matrix cone and lightweight elastic polymer surround, it offers superior sound responsiveness and durability. Designed for flush mounting, it includes a balanced dome tweeter for broad frequency clarity and comes with a 2-year warranty on manufacturing defects.

## Description



## Features

- 350 Watts Max Power
- New Multilayer Mica Matrix Cone Design for Optimum Sound Reproduction and Responsiveness
- Lightweight Elastic Polymer Surround
- 70W RMS
- 6.5 Inch 2-Way Speaker
- Balanced dome tweeter for clear, broad frequency range
- 2-YEAR Warranty ON Manufacturing Defects Only

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Mounting Type | Flush Mount |
| Model Name | SB-CX-61SI |
| Speaker Type | Coaxial |
| Net Quantity | 2.00 Piece |
| Colour | black |
| Included Components | 2N CAR SPEAKER, 2N WIRE, 8N SCREW |
| Product Dimensions | 5D x 16.5W x 16.5H Centimeters |
| Is Waterproof | false |
| Number of Items | 1 |
| Control Method | Remote |
| Speaker Size | 6.5 Inches |
| Brand Name | Sound Boss |
| Colour Name | black |
| RMS Power Range - Amplifiers | 70 Watts |
| Item model number | SB-CX-61SI |
| Manufacturer | SoundBoss |
| Item Weight | 1 kg 550 g |

## Product Details

- **Brand:** Sound Boss
- **Speaker Maximum Output Power:** 350 Watts
- **Frequency Response:** 50 Hz
- **Connectivity Technology:** Coaxial
- **Audio Output Mode:** Surround

## Images

![Sound Boss Car Speaker SB-CX-61SI Premium 16.51 cm (6.5 inch) 2-Way Coaxial Speakers (Black), Peak Power - 350 W, RMS Power - 70W, Rated Power - 65W - Image 1](https://m.media-amazon.com/images/I/61P4M3PVEML.jpg)
![Sound Boss Car Speaker SB-CX-61SI Premium 16.51 cm (6.5 inch) 2-Way Coaxial Speakers (Black), Peak Power - 350 W, RMS Power - 70W, Rated Power - 65W - Image 2](https://m.media-amazon.com/images/I/71BCPmq8iyL.jpg)
![Sound Boss Car Speaker SB-CX-61SI Premium 16.51 cm (6.5 inch) 2-Way Coaxial Speakers (Black), Peak Power - 350 W, RMS Power - 70W, Rated Power - 65W - Image 3](https://m.media-amazon.com/images/I/71Q4nOCD1CL.jpg)
![Sound Boss Car Speaker SB-CX-61SI Premium 16.51 cm (6.5 inch) 2-Way Coaxial Speakers (Black), Peak Power - 350 W, RMS Power - 70W, Rated Power - 65W - Image 4](https://m.media-amazon.com/images/I/71lVQw2F33L.jpg)
![Sound Boss Car Speaker SB-CX-61SI Premium 16.51 cm (6.5 inch) 2-Way Coaxial Speakers (Black), Peak Power - 350 W, RMS Power - 70W, Rated Power - 65W - Image 5](https://m.media-amazon.com/images/I/61VL00GMXHL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ great
*by Y***. on 20 August 2024*

excellent fitexcellent responsenice clarityextreme bass all over its great . . . . . . . ..

### ⭐⭐⭐⭐⭐ great
*by J***M on 2 September 2024*

good one perfect fit nice sound and excellent quality nice sound effect and great price . . . . . . . . . . .

## Frequently Bought Together

- Sound Boss Car Speaker SB-CX-61SI Premium 16.51 cm (6.5 inch) 2-Way Coaxial Speakers (Black), Peak Power - 350 W, RMS Power - 70W, Rated Power - 65W
- JXL 808 Amplifier Wiring Kit for Amps and Bass Tube 2800 W MAX Power 8 Gauge

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**Shop now:** [https://www.desertcart.pl/products/634189318-sound-boss-car-speaker-sb-cx-61si-premium-16-51](https://www.desertcart.pl/products/634189318-sound-boss-car-speaker-sb-cx-61si-premium-16-51)

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*Product available on Desertcart Poland*
*Store origin: PL*
*Last updated: 2026-01-23*