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

Bring deep, powerful bass to your home cinema or music system with the OSD Audio SMP300 + SC800D Black Series Dual In Wall Subwoofer Package.

Designed for discreet installation, this package combines the high-powered SMP300 amplifier with two SC800D sealed in-wall subwoofers, delivering room-filling low frequencies without taking up valuable floor space.

Ideal for living rooms, media rooms, and dedicated home theatres, this setup ensures impactful bass that integrates seamlessly into your walls.

With precision engineering and a sleek design, it offers cinema-grade performance while remaining virtually invisible in your space.

**FEATURES**

-   **High-Power Amplifier:** The OSD Audio SMP300 delivers 300W of clean, controlled power to drive dual in-wall subwoofers effortlessly.
-   **Dual In-Wall Subwoofers:** Two SC800D Black Series subwoofers with sealed enclosures provide rich, distortion-free bass while blending discreetly into walls.
-   **Sealed Enclosure Design:** Each subwoofer’s sealed cabinet enhances accuracy and impact, making it ideal for both movies and music.
-   **Flexible Integration:** Designed to complement home theatre systems or hi-fi setups, the package adds depth and realism to your audio.
-   **Space-Saving Solution:** In-wall installation eliminates bulky floor subwoofers, keeping your living area clean and uncluttered.
-   **Reliable Build Quality:** Built to OSD Audio’s exacting standards, ensuring durability and long-lasting performance.

With two subwoofers powered by a dedicated amplifier, this package delivers cinema-like bass performance in a discreet, space-saving form.

###### What You Get

**AMPLIFIER**

-   1 x SMP300 Amplifier
-   1 x Power Cable

**SUBWOOFER**

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

**CABLES**

-   20m 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:** 1199.0 GBP
- **Vendor:** OSD Audio
- **Type:** Subwoofers
- **Tags:** BLACK5, dfw_feed_exclude, Prime, SALE10

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 1199.00 GBP | In stock |

## Images

- 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 - 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-dual)
> Updated: 2026-07-05