---
product_id: 337378857
title: "BLACK DIAMOND Dia-M6.4B Loudspeaker – 6.5\", Midrange with Bullet, 500W Max, 250W RMS, 4 Ohms - Premium Quality Audio Door Speakers for Car or Truck Stereo Sound System (1 Speaker)"
brand: "black diamond"
price: "€ 101.48"
currency: EUR
in_stock: true
reviews_count: 8
category: "Black Diamond"
url: https://www.desertcart.fi/products/337378857-black-diamond-dia-m6-4b-loudspeaker-6-5-midrange-bullet
store_origin: FI
region: Finland
---

# 250W RMS power handling 6.5" dynamic driver 30 oz ferrite magnet & steel basket BLACK DIAMOND Dia-M6.4B Loudspeaker – 6.5", Midrange with Bullet, 500W Max, 250W RMS, 4 Ohms - Premium Quality Audio Door Speakers for Car or Truck Stereo Sound System (1 Speaker)

**Brand:** black diamond
**Price:** € 101.48
**Availability:** ✅ In Stock

## Summary

> 🎶 Elevate your ride’s soundtrack with Black Diamond’s power-packed precision!

## Quick Answers

- **What is this?** BLACK DIAMOND Dia-M6.4B Loudspeaker – 6.5", Midrange with Bullet, 500W Max, 250W RMS, 4 Ohms - Premium Quality Audio Door Speakers for Car or Truck Stereo Sound System (1 Speaker) by black diamond
- **How much does it cost?** € 101.48 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.fi](https://www.desertcart.fi/products/337378857-black-diamond-dia-m6-4b-loudspeaker-6-5-midrange-bullet)

## Best For

- black diamond enthusiasts

## Why This Product

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

## Key Features

- • **Built to Last:** Durable 1.5" Kapton voice coil and cloth surround ensure longevity and smooth sound output.
- • **Rock-Solid Stability:** Heavy-duty 30 oz ferrite magnet and steel basket provide consistent performance across wide frequencies.
- • **Flexible Installation:** 4-ohm impedance and ideal frequency response (125Hz-12KHz) fit seamlessly into front or rear door mounts.
- • **Powerhouse Performance:** Handles up to 250W RMS, perfect for high-intensity car or truck audio setups without compromise.
- • **Crystal-Clear Audio Precision:** 6.5" midrange with bullet tweeter delivers distortion-free sound at 94dB sensitivity for immersive listening.

## Overview

The BLACK DIAMOND Dia-M6.4B is a premium 6.5" midrange loudspeaker featuring a bullet tweeter, 250W RMS power handling, and a 4-ohm impedance. Engineered with a robust Kapton voice coil, ferrite magnet, and steel basket, it delivers crystal-clear, distortion-free sound with high sensitivity (94dB). Designed for versatile door installation in cars or trucks, it offers durable construction and consistent high-performance audio across a wide frequency range (125Hz to 12KHz).

## Description

desertcart.com: BLACK DIAMOND Dia-M6.4B Loudspeaker – 6.5", Midrange with Bullet, 500W Max, 250W RMS, 4 Ohms - Premium Quality Audio Door Speakers for Car or Truck Stereo Sound System (1 Speaker) : Electronics

Review: Black diamond - Love this midrange speakers And the price 🙂‍↕️👌
Review: Sound is amazing - Speakers sound loud and crisp for the price may end up getting another bundle of 6.5 had been years since I made a box and man I had fun would be nice to get a cut out templete still no big deal

## Features

- Powerful Sound Performance - 6.5” 2-way midrange speaker with a bullet tweeter, offering crystal clear sound and high sensitivity of 94dB for distortion-free audio at high volumes
- High Power Handling - Delivers 250W RMS power handling, making it capable of meeting the demands of high-intensity audio setups without compromising sound quality
- Durable Construction - Features a robust 1.5” Kapton voice coil, non-pressed paper cone, and a cloth surround for long-lasting durability and smooth sound output
- Heavy-Duty Components - Equipped with a 30 oz ferrite magnet and a steel basket for enhanced stability and consistent performance across a wide frequency range
- Versatile Installation - 4-ohm impedance for flexible amplifier configurations and ideal for front or rear door installations, with a frequency response range of 125Hz to 12KHz

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09883NBB9 |
| Audio Driver Size | 6.5 Inches |
| Audio Driver Type | Dynamic Driver |
| Best Sellers Rank | #144,687 in Electronics ( See Top 100 in Electronics ) #1,618 in Car Coaxial Speakers #1,676 in Speaker Parts & Components |
| Color | Black |
| Compatible Devices | Smartphone, Tablet, MP3 Player |
| Control Method | Voice |
| Customer Reviews | 4.2 4.2 out of 5 stars (35) |
| Date First Available | June 29, 2021 |
| Impedance | 4 Ohms |
| Included Components | Speaker |
| Is Waterproof | FALSE |
| Item Weight | 5.25 pounds |
| Item model number | DIA-M6.4B |
| Manufacturer | Black Diamond |
| Model Name | DIA-M6.4B |
| Mounting Type | Car Mount |
| Number of Items | 1 |
| Power Source | Corded Electric |
| Product Dimensions | 2.83"D x 6.61"W x 6.61"H |
| Recommended Uses For Product | Door |
| Set Name | 1 |
| Shape | rectangular |
| Speaker Size | 6.5 Inches |
| Speaker Type | Loudspeaker |
| Special Feature | Durable |
| Specific Uses For Product | Car or truck door speaker |
| Style | 6.5-Inches |
| Subwoofer Connectivity Technology | Wired |
| Subwoofer Diameter | 6.5 Inches |
| Surround Sound Channel Configuration | 1.0 |
| Tweeter Diameter | 1 Inches |
| UPC | 810005189125 |
| Warranty Type | Limited |
| Water Resistance Level | Not Water Resistant |
| Wireless Communication Technology | Bluetooth |
| Woofer Diameter | 6.5 Inches |

## Product Details

- **Audio Output Mode:** Stereo
- **Brand:** BLACK DIAMOND
- **Connectivity Technology:** Bluetooth
- **Frequency Response:** 12000 Hz
- **Speaker Maximum Output Power:** 500 Watts

## Images

![BLACK DIAMOND Dia-M6.4B Loudspeaker – 6.5", Midrange with Bullet, 500W Max, 250W RMS, 4 Ohms - Premium Quality Audio Door Speakers for Car or Truck Stereo Sound System (1 Speaker) - Image 1](https://m.media-amazon.com/images/I/71-pbQGtOkL.jpg)

## Available Options

This product comes in different **Pattern, Style** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Black diamond
*by M***L on November 9, 2025*

Love this midrange speakers And the price 🙂‍↕️👌

### ⭐⭐⭐⭐⭐ Sound is amazing
*by D***A on April 9, 2025*

Speakers sound loud and crisp for the price may end up getting another bundle of 6.5 had been years since I made a box and man I had fun would be nice to get a cut out templete still no big deal

### ⭐⭐⭐⭐ 8" loud speaker
*by A***0 on April 2, 2025*

The speaker sounds good and is clear. It works like a mid should. I like the brand and think it's a decent value for a quality speaker. But seriously amazon, a plastic bag? It weighs 6.4 pounds and that's what you chose. The fact that this 8 inch speaker survived the trip is a testament to the durability. I approve of it.

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**Shop now:** [https://www.desertcart.fi/products/337378857-black-diamond-dia-m6-4b-loudspeaker-6-5-midrange-bullet](https://www.desertcart.fi/products/337378857-black-diamond-dia-m6-4b-loudspeaker-6-5-midrange-bullet)

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*Product available on Desertcart Finland*
*Store origin: FI*
*Last updated: 2026-03-20*