---
product_id: 540062977
title: "BIA Acoustics 6.5 Inch Subwoofer Pro Series (4ohm 55W) Silver"
brand: "bia ; acoustics"
price: "144 Lei"
currency: RON
in_stock: false
reviews_count: 3
url: https://www.desertcart.ro/products/540062977-bia-acoustics-6-5-inch-subwoofer-pro-series-4ohm-55w
store_origin: RO
region: Romania
---

# 4-layer CCAW voice coil for power handling 90 dB sensitivity for crisp bass Butyl rubber surround for durability BIA Acoustics 6.5 Inch Subwoofer Pro Series (4ohm 55W) Silver

**Brand:** bia ; acoustics
**Price:** 144 Lei
**Availability:** ❌ Out of Stock

## Summary

> 🎶 Elevate your sound game with bass that flexes like a pro!

## Quick Answers

- **What is this?** BIA Acoustics 6.5 Inch Subwoofer Pro Series (4ohm 55W) Silver by bia ; acoustics
- **How much does it cost?** 144 Lei with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.ro](https://www.desertcart.ro/products/540062977-bia-acoustics-6-5-inch-subwoofer-pro-series-4ohm-55w)

## Best For

- bia ; acoustics enthusiasts

## Why This Product

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

## Key Features

- • **Built to Last:** Durable butyl rubber surround and PP dust cap provide long-lasting performance and self-damping.
- • **Perfect Fit & Flex:** Compact 6.5-inch size fits seamlessly in custom or replacement speaker builds, ideal for 2-way or 3-way systems.
- • **Power-Handling Pro:** 4-layer CCAW ASV voice coil and vented pole piece ensure high power capacity without compression.
- • **Punchy Bass Mastery:** Experience deep, low-frequency impact with the imported High Roll Spyder cone designed for rich bass response.
- • **Optimized Enclosure Ready:** Designed for enclosures between 0.5 to 0.55 ft³ with port tuning for booming bass that commands attention.

## Overview

The BIA Acoustics 6.5 Inch Subwoofer Pro Series (4ohm 55W) delivers professional-grade bass with a 90 dB sensitivity and a robust 4-layer CCAW voice coil. Engineered with a butyl rubber surround and a high roll spyder cone, it offers durability and punchy low-frequency response. Perfect for DIY speaker projects or upgrades, this subwoofer thrives in tuned enclosures, providing powerful, distortion-free bass that transforms any audio setup.

## Description

BIA Acoustics 6.5 Inch Subwoofer Pro Series Workbench T/S parameters f(s) = 55 Hz Q(ts) = 0.467 V(as) = 6.576 liters (0.23cubic feet) R(e) = 3.335 Ohms Q(es) = 0.53 SPL = 89.82 dB SPL 2.83 Vrms C(ms) = 0.678 mm/N L(e) = 0.311 mH at 10kHz Q(ms) = 6.003 BL = 6.375 n(0) = 0.09931 % M(ms) = 11.59 grams Enclosure Recommendation Total Enclosure Internal Volume - 0.5 to 0.55 ft³ Enclosure External Dimensions - 8*10*15 inch (W*D*H)Port Size : 2.25 inch Dia 6inch LengthMaterial thickness : 12mm Board/ply Pro Series Subwoofers are excellent for use as replacement speakers or for new loudspeaker system design and construction. You can even be use the 6.5 Subwoofer as a small Midbass Driver in 3 Way Systems The excellent Punchy Bass frequency performance will amaze you. A pressed treated paper cone allows for smooth frequency response, while the high temperature aluminum voice coil and vented pole piece combine to increase power handling without compression. Longevity is ensured with the use of a rubber surround, PP dust cap, and an 6 Vent Chasis

Review: Best Quality sound good - Best quality nice sound
Review: OMG , best bass at best price. 6stars - the flex is superb. Nice upgrade from previous black one. Video is at 50 watts pure and it flexes like hell. Box I made is 8*14*12 and 2.5 inch 5 inch long pipe. Awesome bass

## Features

- Imported High Roll Spyder for Low Bass Response
- 4 Layer CCAW ASV Voice Coil
- Butyl Rubber Surround For Durability and Self Damping
- 90/17 Y30 Grade Magnet with 5mm Pole Plates

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CB1RLRGY |
| Brand Name | BIA ; ACOUSTICS |
| Colour | 4ohm 55W |
| Colour Name | 4ohm 55W |
| Compatible Devices | 6.5 inch Powered Subwoofer, DIY Projects of 2 way 3 way speaker systems. |
| Control Method | Remote |
| Customer Reviews | 3.1 3.1 out of 5 stars (17) |
| Date First Available | 18 October 2022 |
| Generic Name | 6.5 inch Subwoofer |
| Included Components | 1 pcs 6.5 inch Subwoofer |
| Is Waterproof | false |
| Item Weight | 430 g |
| Item model number | SUB65554.WHT |
| Manufacturer | BIA Acoustics |
| Material | Aluminum |
| Model Name | SUB65554.WHT |
| Mounting Type | Flush Mount |
| Net Quantity | 1.00 Piece |
| Number of Items | 1 |
| Product Dimensions | 16.5D x 16.5W x 7.6H Centimeters |
| Recommended Uses For Product | Subwoofers, Bass tubes , Hometheatres , Portable Boombox Soundbars hometheatres |
| Sensitivity (db) | 90 dB |
| Speaker Size | 6.5 Inches |
| Speaker Type | Subwoofer |
| Special Feature | Bass Boost and Boomy bass in tuned enclosure |
| Subwoofer Diameter | 6.5 Inches |
| Total Harmonic Distortion | 0.02 |
| Wireless Communication Technology | Bluetooth |

## Product Details

- **Audio Output Mode:** Surround
- **Brand:** BIA ; ACOUSTICS
- **Connectivity Technology:** wired
- **Frequency Response:** 55 Hz
- **Speaker Maximum Output Power:** 55 Watts

## Images

![BIA Acoustics 6.5 Inch Subwoofer Pro Series (4ohm 55W) Silver - Image 1](https://m.media-amazon.com/images/I/4154Gjj2csL.jpg)
![BIA Acoustics 6.5 Inch Subwoofer Pro Series (4ohm 55W) Silver - Image 2](https://m.media-amazon.com/images/I/41c-3serdJL.jpg)
![BIA Acoustics 6.5 Inch Subwoofer Pro Series (4ohm 55W) Silver - Image 3](https://m.media-amazon.com/images/I/41nVYK7H6zL.jpg)
![BIA Acoustics 6.5 Inch Subwoofer Pro Series (4ohm 55W) Silver - Image 4](https://m.media-amazon.com/images/I/510LO2n6ZlL.jpg)
![BIA Acoustics 6.5 Inch Subwoofer Pro Series (4ohm 55W) Silver - Image 5](https://m.media-amazon.com/images/I/51V1DGgolRL.jpg)

## Questions & Answers

**Q: Does this play good on car stereo without amp**
A: No , this is not car speaker. This is Subwoofer

**Q: What is the cutout size??**
A: 145mm cutout

**Q: What is the Xmax of this driver??**
A: Xmax Linear - 7.6mm peak-peak 
Xmech limit - 18mm peak to peak

**Q: Is it Subwoofer or Woofer. Description says its Subwoofer, while the product image say it is Woofer. Kindly clarify.**
A: It's is a subwoofer and can also be used as midbass driver(woofer) .

## Customer Reviews

### ⭐⭐⭐⭐⭐ Best Quality sound good
*by P***T on 6 September 2023*

Best quality nice sound

### ⭐⭐⭐⭐⭐ OMG , best bass at best price. 6stars
*by A***E on 18 July 2023*

the flex is superb. Nice upgrade from previous black one. Video is at 50 watts pure and it flexes like hell. Box I made is 8*14*12 and 2.5 inch 5 inch long pipe. Awesome bass

### ⭐⭐⭐⭐⭐ Superb bass
*by A***R on 7 August 2023*

Worth it buying but polarity different

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*Product available on Desertcart Romania*
*Store origin: RO*
*Last updated: 2026-01-25*