# OSD Audio SMP300 + SC800D Black Series In Wall Subwoofer Package - Single - 300W

Bring cinema-quality bass into your home with the OSD Audio SMP300 + SC800D Black Series In Wall Subwoofer Package.

This system is perfect for home cinema enthusiasts and music lovers who want powerful low-end sound without compromising on style or space.

Designed for discreet installation, the in-wall subwoofer with its sealed enclosure blends seamlessly into your living environment while delivering deep, impactful bass.

The high-performance SMP300 subwoofer amplifier drives the dual woofers effortlessly, offering precise bass response for both movies and music.

Together, this package delivers an immersive listening experience while keeping your room free of bulky subwoofer boxes.

**FEATURES**

-   **Powerful 300W Amplifier:** The OSD Audio SMP300 supplies up to 300 watts of clean, controlled power, ensuring the SC800D subwoofer performs at its best.
-   **Dual 8" Subwoofers:** The SC800D features one 8" woofers and a 10" passive radiator in a sealed enclosure for tight, distortion-free bass that enhances both music and movie soundtracks.
-   **In-Wall Design:** Discreet installation keeps your floor space clear while delivering high-impact bass directly from the wall.
-   **Sealed Enclosure:** Designed to eliminate unwanted vibrations and resonance, the enclosure ensures accurate low-frequency performance.
-   **Variable Controls:** The SMP300 includes adjustable crossover, phase control, and volume to fine-tune the bass response to suit your room and system.
-   **Flexible Connectivity:** Equipped with RCA inputs and outputs, the amplifier integrates easily with home cinema receivers and audio systems.

Enjoy the best of both performance and design with this in-wall subwoofer package, giving you the deep, room-filling bass you need without compromising your interior.

###### What You Get

**AMPLIFIER**

-   1 x SMP300 Amplifier
-   1 x Power Cable

**SUBWOOFER**

-   1 x Subwoofer
-   1 x Grille
-   1 x Cut Out Template
-   1 x Instruction Manual

**CABLES**

-   10m x 2 Core Speaker Cable
-   1 x QED Connect 3M Subwoofer Cable

###### Specifications

AMPLIFIER

-   **Amplifier Type:** Subwoofer
-   **Amplifier Class:** Digital Class D
-   **Channels:** 1
-   **Power Output:** 500 Watts @ 4 Ohm
-   **Power Handling:** 8 Ohm RMS Rating (Watts): 150 Watts
-   **Power Handling:** 4 Ohm RMS Rating (Watts): 250 Watts
-   **Frequency Response:** 20Hz-160Hz +/-1dB THD: 1%
-   **Variable Crossover:** 35Hz-180Hz
-   **Variable Phase Switch:** 0 To 180 Degrees
-   **Impedance:** 8 Ohm And 4 Ohm Stable
-   **Signal To Noise Ratio:** 95 dB
-   12V Trigger Mode
-   **Inputs:** Speaker (High) Level / Signal (Low) Level RCA
-   **Rack Mountable:** 1U Rack Space Style / Mounts Included
-   **Dimensions (L x H x D):** 413mm x 76mm x 235mm
-   **Weight:** 3.2kg
-   **Warranty:** 2 Years

SUBWOOFER

-   **Speaker Type:** 8"In-Wall Subwoofer
-   **Woofer:** 8"Polypropylene
-   **Passive Radiator:** 10"
-   **Frequency Response:** 40Hz - 500Hz
-   **Power Handling:** 300 Watts
-   **Impedance:** 8 Ohms
-   **Inputs:** Spring Binding Posts
-   **Included:** Cut-Out Template For Easy Installation
-   **Grille:** Paintable Grille&Frame Included
-   **Cabinet:** Tuned Sealed Cabinet
-   **Sold As:** Single
-   **Mounting Depth(Assuming 13mm Drywall):** 99mm
-   **Unit Dimensions(L x H x D):** 559mm x 445mm x 109mm
-   **Cutout Dimensions(L x H):** 508mm x 368mm
-   **Weight:** 10.4kg
-   **Warranty:** Limited Lifetime
-   **Note:** Requires Additional Subwoofer Amplifier

## Details

- **Price:** 849.0 GBP
- **Vendor:** OSD Audio
- **Type:** Subwoofers
- **Tags:** BLACK5, dfw_feed_exclude, Prime, SALE10

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 849.00 GBP | In stock |

## Images

- OSD Audio SMP300 + SC800D Black Series In Wall Subwoofer Package - Single - 300W - K&B Audio
- OSD Audio SMP300 + SC800D Black Series In Wall Subwoofer Package - Single - 300W - K&B Audio
- OSD Audio SMP300 + SC800D Black Series In Wall Subwoofer Package - Single - 300W - K&B Audio
- OSD Audio SMP300 + SC800D Black Series In Wall Subwoofer Package - Single - 300W - K&B Audio
- OSD Audio SMP300 + SC800D Black Series In Wall Subwoofer Package - Single - 300W - K&B Audio
- OSD Audio SMP300 + SC800D Black Series In Wall Subwoofer Package - Dual - 300W - K&B Audio
- OSD Audio SMP300 + SC800D Black Series In Wall Subwoofer Package - Dual - 300W - K&B Audio
- OSD Audio SMP300 + SC800D Black Series In Wall Subwoofer Package - Dual - 300W - K&B Audio
- OSD Audio SMP300 + SC800D Black Series In Wall Subwoofer Package - Dual - 300W - K&B Audio
- OSD Audio SMP300 + SC800D Black Series In Wall Subwoofer Package - Dual - 300W - K&B Audio

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> Source: [K&B Audio](https://www.kbaudio.co.uk/products/osd-audio-smp300-sc800d-black-series-in-wall-subwoofer-package-single-300w)
> Updated: 2026-07-05