---
product_id: 492297470
title: "RTB80A 8\" 400 Watt Powered Subwoofer Bass Tube + MP3 Input"
brand: "rockville"
price: "¥71715"
currency: JPY
in_stock: true
reviews_count: 5
category: "Rockville"
url: https://www.desertcart.jp/products/492297470-rtb80a-8-400-watt-powered-subwoofer-bass-tube-mp3-input
store_origin: JP
region: Japan
---

# 400W peak power punch Built-in 250W RMS amp 18dB bass boost @ 45Hz RTB80A 8" 400 Watt Powered Subwoofer Bass Tube + MP3 Input

**Brand:** rockville
**Price:** ¥71715
**Availability:** ✅ In Stock

## Summary

> 🎵 Unleash the bass beast in your ride — because your car deserves to be heard!

## Quick Answers

- **What is this?** RTB80A 8" 400 Watt Powered Subwoofer Bass Tube + MP3 Input by rockville
- **How much does it cost?** ¥71715 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/492297470-rtb80a-8-400-watt-powered-subwoofer-bass-tube-mp3-input)

## Best For

- rockville enthusiasts

## Why This Product

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

## Key Features

- • **Seamless Integration:** Built-in 250W RMS amplifier perfectly matched to the enclosure ensures crystal-clear, distortion-free bass without extra gear.
- • **Precision Sound Tuning:** Customize your low-end with an adjustable bass crossover and built-in equalizer offering up to 18dB boost at 45Hz for that perfect thump.
- • **Effortless Installation:** Includes speaker-level & RCA inputs plus steel brackets and Velcro straps for a quick, secure setup—bass upgrade in minutes.
- • **Compact & Durable Design:** Aviation-grade tweed covering and rear aero vent system combine style and ruggedness, fitting effortlessly in any vehicle without sacrificing space.
- • **Powerhouse Bass Performance:** Feel every beat with 400W peak power and an 8" high-output woofer delivering deep, punchy bass that commands attention.

## Overview

The Rockville RTB80A is a compact yet powerful 8" powered subwoofer delivering 400W peak power with a built-in 250W RMS amplifier. Featuring customizable bass controls including an 18dB boost at 45Hz, it offers precise low-frequency tuning. Its durable, aviation-grade tweed enclosure with rear aero vent maximizes bass output while fitting seamlessly into any vehicle. Easy to install with multiple input options, this subwoofer transforms your car audio into a deep, punchy sound experience.

## Description

Introducing the Rockville RTB80A Powered Subwoofer Tube. We at Rockville just had to manufacture a high quality powered bass tube. Growing up one of my best friends bought a car and it had a powered bass tube in it. The sound that it produced was just amazing and I will never forget it. Bass tubes push out some of the punchiest bass available. I personally love punchy bass that is deep and clean. Bass is an integral part of any good audio system, and the Rockville Bass Blaster amplified subwoofer tubes will add power and impact to your car audio system. The cylindrical shape of the enclosure helps focus the motion of the bass pressure so it maximizes that punchy output from both the woofers face and the tuned rear aero port. Strong deep bass will fire through your vehicle for astounding results.Since this is a powered bass tube, you get everything you need! This is your entire bass system. The built in power amplifier will push this tube to the max. The amp, sub and enclosure are perfectly tuned and matched to sound perfect together.As far as power is concerned the RTB80A is a powerhouse. The compact package features a high power 8” woofer and 400-Watt amplifier that will literally shoot deep bass waves throughout your car. You can fine-tune the subwoofer with the built-in electronic low pass crossover so that your subwoofer meshes perfectly with the rest of your audio system. The built-in bass equalizer allows you to set in the exact amount of bass boost of up to 18dB’s @ 45Hz for real ground pounding bass.Installation is a breeze! No need for building and wiring enclosures to amplifiers. Simply power, ground remote and send signal to the bass tube and you are ready to enjoy the most incredible bass you have ever heard."Good things do come in small packages" Rockville Bass Tubes will fit every vehicle without taking up valuable space and provide super low-end bass response.

Review: The bass tube was easy to install and sounds great.
Review: I’ve now used these in 2 vehicles. The sound is amazing for what it is, and the price is amazing! Face it towards the rear in your trunk for the best sound

## Features

- Powerful Bass Performance: Rockville RTB80A delivers 400W peak power (200W RMS) with an 8" high-power woofer for punchy and impactful bass.
- Integrated Amplifier: Built-in 250W RMS amplifier ensures perfect tuning between the subwoofer and enclosure for optimal low-frequency sound.
- Customizable Sound Control: Features an adjustable bass crossover and a built-in bass equalizer with up to 18dB boost @ 45Hz for precise sound tuning.
- Durable and Compact Design: Aviation-grade tweed-covered vented enclosure with a rear aero vent system and molded steel woofer grill enhances bass output and durability.
- Easy Installation: Includes speaker-level and RCA line-level inputs, steel mounting brackets, and Velcro straps for quick and secure setup in any vehicle.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00SKIM6SS |
| Colour | Black |
| Compatible devices | Personal Computer |
| Control method | Touch |
| Customer Reviews | 4.0 4.0 out of 5 stars (220) |
| Date First Available | 21 July 2015 |
| Included components | Subwoofer |
| Is waterproof | FALSE |
| Item Weight | 5.9 kg |
| Item model number | RTB80A |
| Item weight | 13 Pounds |
| Number of items | 1 |
| Other display features | Automotive Parts and Accessories |
| Power source | Corded Electric |
| Product dimensions | 26.7D x 50.8W x 25.4H centimetres |
| Recommended uses for product | Car |
| Speaker size | 8 Inches |
| Special features | Amplifier |
| Subwoofer diameter | 8 Inches |
| Surround-sound channel configuration | 1.0 |
| Unit count | 1.0 Count |
| Wireless communication technology | No Wireless Communication Technology |

## Product Details

- **Audio output mode:** Mono
- **Brand:** Rockville
- **Connectivity technology:** RCA
- **Frequency response:** 30 Hz
- **Material:** Steel, Tweed
- **Model name:** RTB80A
- **Mounting type:** Tabletop
- **Speaker maximum output power:** 400 Watts
- **Speaker type:** Subwoofer
- **Special feature:** Amplifier

## Images

![RTB80A 8" 400 Watt Powered Subwoofer Bass Tube + MP3 Input - Image 1](https://m.media-amazon.com/images/I/81aAPAiFuxL.jpg)

## Questions & Answers

**Q: How did you come up with the measurements 20x10.5x10?**
A: cant be 10.5 x 10    its round so has to be the same !

**Q: Why does it say 500 watts on the subwoofer? But you say 600 watts**
A: It's neither.  Your lucky if you get 200 watts out of it but depends on which input you use and the radios output. I opened mind to see what the audio chips looks like and they are only rated at 150 to 200 watts max.

**Q: Is it waterproof?**
A: I really don't think so.

**Q: Why can’t I return this item ,it was wrong one**
A: Ask the seller, there customer service isn't the best

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by D***N on 12 April 2023*

The bass tube was easy to install and sounds great.

### ⭐⭐⭐⭐⭐ Review
*by M***O on 20 November 2025*

I’ve now used these in 2 vehicles. The sound is amazing for what it is, and the price is amazing! Face it towards the rear in your trunk for the best sound

### ⭐⭐⭐⭐⭐ Review
*by C***L on 19 January 2025*

Put in back seat of extended cab truck. Perfect fit under the seat. Great value for the price. Gives enough low end and punch in a small enclosed cab. BTW, Rockville support is awesome! I had a few novice questions for install and they were easy to talk to and have great recommendations for wiring and location. Highly recommend!

## Frequently Bought Together

- Rockville RTB80A Powered Subwoofer Bass Tube, 8", 400W Peak/200 Watts RMS, Deep Bass, Built-In Amp, Crossover, Vented Enclosure, Perfect for Car Audio
- BOSS Audio Systems KIT2 8 Gauge Complete Car Amplifier Installation Wiring Kit with Power Cables, Ground Cables, Turn-On Wire, Speaker Wire, Terminals
- PAC SNI-35 Variable LOC Line Out Converter 1.2x6.25x5.9

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.jp/products/492297470-rtb80a-8-400-watt-powered-subwoofer-bass-tube-mp3-input](https://www.desertcart.jp/products/492297470-rtb80a-8-400-watt-powered-subwoofer-bass-tube-mp3-input)

---

*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-03-11*