---
product_id: 685744624
title: "OSD in-Wall 300W Low Profile Home Theater Subwoofer Trimless Design 8\" Woofer w/ 10\" Passive Radiator SL800D"
brand: "osd audio"
price: "¥242861"
currency: JPY
in_stock: false
reviews_count: 2
url: https://www.desertcart.jp/products/685744624-osd-in-wall-300w-low-profile-home-theater-subwoofer-trimless
store_origin: JP
region: Japan
---

# 8" woofer + 10" passive radiator 300W power output Trimless in-wall design OSD in-Wall 300W Low Profile Home Theater Subwoofer Trimless Design 8" Woofer w/ 10" Passive Radiator SL800D

**Brand:** osd audio
**Price:** ¥242861
**Availability:** ❌ Out of Stock

## Summary

> 🎶 Hide the sub, feel the boom — bass that blends in and stands out!

## Quick Answers

- **What is this?** OSD in-Wall 300W Low Profile Home Theater Subwoofer Trimless Design 8" Woofer w/ 10" Passive Radiator SL800D by osd audio
- **How much does it cost?** ¥242861 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/685744624-osd-in-wall-300w-low-profile-home-theater-subwoofer-trimless)

## Best For

- osd audio enthusiasts

## Why This Product

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

## Key Features

- • **Compact Yet Mighty:** Slim profile saves floor space while providing robust, controlled vibration performance.
- • **Powerful 300W Bass:** Delivers deep, room-filling low frequencies with minimal distortion.
- • **Elevate Your Home Theater:** Transforms your audio experience with rich, immersive bass that impresses every guest.
- • **Advanced Dual Driver System:** 8" polypropylene woofer paired with a 10" passive radiator for enhanced bass response.
- • **Seamless In-Wall Integration:** Trimless, paintable frame blends perfectly with your wall for a sleek, minimalist look.

## Overview

The OSD SL800D is a 300W in-wall subwoofer featuring an 8" polypropylene woofer and a 10" passive radiator, designed for powerful, distortion-free bass. Its trimless, paintable frame ensures a flush, minimalist installation that enhances any home theater without sacrificing space or style.

## Description

The OSD Audio In-Wall Trimless Home Theater Subwoofer is a great way to distribute bass in your own home theater system. The design allows the system to blend into the wall for a hidden effect. Optimal Speaker Design is engaged in the design, engineering, and distribution of high-quality home and commercial audio products. Our products range in complexity from simple in-ceiling speakers to whole house audio systems-all with beautiful styling and high-end sound quality.Our U.S.-based research, development and design team, is supported by a network of cutting-edge acoustical, mechanical and electrical engineers. Together, we create products that combine the latest technology with ease of use for a quality sound experience.With extensive product and application knowledge, our exceptional team provides you with custom solutions to create the perfect audio solution.

Review: Great speaker for in wall install
Review: Great

## Features

- POWER The SL800D has an 8 inch polypropylene woofer and a 10 inch passive radiator to produce the richest low frequency response while reducing distortion and vibration so pair with a robust amplifier
- SOUND QUALITY Place the SL800D into the wall to fill in the low notes missing from your music and movies It enhances the sound quality of your home theater for ultimate guest appeal
- BASS With 300 Watts of power handling a deep bass sound is produced in a compact package and smaller enclosure for a controlled vibration system The passive radiator increases the low frequency response
- IN-WALL Improve your audio entertainment without knowing it is there The SL800D has a trimless look for a low profile when placed into a wall
- DESIGN The slim in-wall sub is trimless and features a paintable frame and grille allowing this subwoofer to appear flush with surrounding design while taking up minimal floor space

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07HCVCRD8 |
| Antenna Location | For Surround Sound Systems |
| Audio Driver Size | 8 Inches |
| Audio Driver Type | Dynamic Driver |
| Audio Output Mode | Mono |
| Box Contents | MANUAL, SUBWOOFER |
| Brand | OSD Audio |
| Brand Name | OSD Audio |
| Colour | White |
| Compatible Devices | Home Theater |
| Compatible with Vehicle Type | Car |
| Connectivity Protocol | Speaker Wire |
| Connectivity Technology | Speaker Wire |
| Control Method | Voice |
| Controller Type | Corded Electric |
| Customer Package Type | Standard Packaging |
| Customer Reviews | 4.2 out of 5 stars 29 Reviews |
| Enclosure Material | Polypropylene |
| Is Waterproof | False |
| Item Dimensions D x W x H | 10.9D x 55.9W x 44.5H Centimeters |
| Item Height | 18 Inches |
| Item Weight Unit of Measure | 18 Pounds |
| MP3 player | No |
| Manufacturer | OSD Audio |
| Material | Polypropylene |
| Model Name | SL800D |
| Model Number | 4348169735 |
| Mounting Type | Wall Mount |
| Network Connectivity Technology | Speaker Wire |
| Number of Audio Channels | 1 |
| Number of Items | 1 |
| Power Source | Corded Electric |
| Product Features | Subwoofer |
| Speaker Maximum Output Power | 300 Watts |
| Speaker Size | 10 Inches |
| Speaker Type | Subwoofer |
| Subwoofer Connectivity Technology | Wired |
| Subwoofer Speaker Diameter Unit of Measure | 8 Inches |
| Tweeter Driver Diameter | 1 Inches |
| UPC | 819603019896 |
| Unit Count | 1.0 Count |
| Water Resistance Level | Not Water Resistant |
| Woofer Driver Diameter | 8 Inches |

## Product Details

- **Brand:** OSD Audio
- **Speaker Maximum Output Power:** 300 Watts
- **Connectivity Technology:** Speaker Wire
- **Audio Output Mode:** Mono
- **Mounting Type:** Wall Mount

## Images

![OSD in-Wall 300W Low Profile Home Theater Subwoofer Trimless Design 8" Woofer w/ 10" Passive Radiator SL800D - Image 1](https://m.media-amazon.com/images/I/51aPMeWfvlL.jpg)
![OSD in-Wall 300W Low Profile Home Theater Subwoofer Trimless Design 8" Woofer w/ 10" Passive Radiator SL800D - Image 2](https://m.media-amazon.com/images/I/51qTgOqJPYL.jpg)
![OSD in-Wall 300W Low Profile Home Theater Subwoofer Trimless Design 8" Woofer w/ 10" Passive Radiator SL800D - Image 3](https://m.media-amazon.com/images/I/61-qq5N99VL.jpg)
![OSD in-Wall 300W Low Profile Home Theater Subwoofer Trimless Design 8" Woofer w/ 10" Passive Radiator SL800D - Image 4](https://m.media-amazon.com/images/I/619S6JrUQhL.jpg)
![OSD in-Wall 300W Low Profile Home Theater Subwoofer Trimless Design 8" Woofer w/ 10" Passive Radiator SL800D - Image 5](https://m.media-amazon.com/images/I/61EnT3xGZQL.jpg)

## Questions & Answers

**Q: SL800 8” in-wall w/ backbox: can it be used under a covered patio (ie high moisture environment)?**
A: It is built strong and sealed but its still a wood box laminated from pressed wood so i would still seal up the exterior of the opening where you plan to put it to further protect it, as for the woofer itself, i dont think its made from a polimer but a strong paper cone so that may not stand up over time but it will if its not getting directly bombarded by nature rain or snow.

**Q: Is this subwoofer self powered or does it need an amp?**
A: Hello, this is a passive subwoofer so an amplifier is needed. We recommend our SMP500 subwoofer amplifier which you can find on Amazon, just search the ASIN: B07F94FSLF

**Q: Is the back box fire rated? Will it pass code that requires fire rated back boxes? What are the standards?**
A: Although the back box was built to fire rated specs, there is no certification.

**Q: What is the actual dimension for this in wall subwoofer**
A: Hello, the Unit Dimensions: (L x H x D) 22" x 17.5" x 4.3", and the Cutout Dimensions: (L x H) 20" x 14.5".

## Customer Reviews

### ⭐⭐⭐⭐ Great speaker for in wall install
*by B***N on 9 January 2024*



### ⭐⭐⭐⭐⭐ Great
*by D***D on 8 June 2019*



## Frequently Bought Together

- OSD Trimless in Wall Subwoofer Dual 8" Woofers 300W Sealed Enclosure Magnetic Grill SL800
- OSD Audio SMP300 Class D Digital Subwoofer Amplifier Rated at 500W Max
- FosPower Banana Plugs 12 Pairs / 24 pcs, Closed Screw 24K Gold Plated Speaker Plug Connectors for Speaker Wire, Wall Plate, Home Theater, Audio/Video Receiver, Amplifiers and Sound Systems

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-01-29*