# Monitor Audio In Wall Subwoofer Package - Single - 250W

Bring powerful, discreet bass performance into your home cinema or music system with the Monitor Audio In Wall Subwoofer Package.

Designed for seamless integration, this package combines the IWS-10 in-wall subwoofer, the IWB-10 back box, and the dedicated IWA-250 amplifier.

The result is deep, controlled bass without compromising floor space, making it ideal for living rooms, media rooms, and custom home theatre installations.

The IWS-10 subwoofer is engineered for tight, impactful low frequencies while remaining hidden behind the wall.

Housed within the IWB-10 rigid sealed back box, it delivers consistent performance while isolating sound for cleaner bass response.

The dedicated IWA-250 amplifier powers the system with precision and authority, ensuring the subwoofer operates at its full potential.

Together, these components create an audiophile-grade solution that enhances movies, music, and gaming without disrupting your interior design.

**FEATURES**

-   **IWS-10 In-Wall Subwoofer:** Slim 10” C-CAM driver delivers impactful, detailed bass while remaining hidden behind the wall.
-   **IWB-10 Back Box:** Rigid, sealed enclosure ensures accurate performance and reduces sound leakage into adjoining rooms.
-   **IWA-250 Subwoofer Amplifier:** Provides 250W of clean Class-D power with EQ settings to optimise bass response for your room.
-   **Discreet Installation:** Perfect for home cinema or music rooms where floor space and aesthetics are important.
-   **Flexible System Expansion:** Designed to work with up to two IWS-10 subwoofers for even greater bass performance.
-   **Seamless Integration:** Matches perfectly with Monitor Audio’s architectural speaker range for a complete, hidden audio system.

This package delivers powerful, cinematic bass while remaining completely discreet, making it the ultimate solution for a refined in-wall audio installation.

###### What You Get

**AMPLIFIER**

-   1 x IWA-250 Amplifier
-   1 x Power Supply
-   1 x Instruction Manual

**CABLE**

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

**SUBWOOFER**

-   1 x IWS-10 Subwoofer
-   1 x Grille
-   1 x Cut Out Template
-   1 x IWB-10 Back Box

###### Specifications

AMPLIFIER

-   **System Format:** Active subwoofer amplifier
-   **Lower Frequency Limit:** 25 Hz
-   **Upper Frequency Limit:** Variable 40 – 120 Hz @ 24 dB/Octave
-   **Amplifier Output:** 250 W @<1% THD+N
-   **Drive Unit Complement:** 4 – 8 ohms
-   **Amplifier Classification:** Class D amplifier with Switch Mode Power Supply (SMPSU)
-   **Cabinet Support:** For use with the dedicated back box
-   **EQ:** Music, Movie, Impact
-   **Phase Control:** 0°&180°
-   **Auto Sensing:** Line level > 3.5 mV
-   **Input Level Requirements:** Standby after approximately 15 minutes of no signal
-   **Input Impedance:** > 20K ohms
-   **Mains Input Voltage:** AC 110 – 120 V ~ 50/60 Hz, AC 220 – 240 V ~ 50/60 Hz (Factory Region Preset)
-   **Dimensions (H x W x D):** 43.7 x 432 x 263 mm (1¾ x 17 x 10⅜")
-   **Connection:** LFE in (Stereo RCA and Balanced), 12V Trigger in (3.5 mm mono mini-jack), left and right speaker output
-   **Trigger Input:** 5 – 12V via 3.5 mm mono mini-jack socket
-   **Power Consumption:** Standby<0.5 W (ErP approved), Typical Idle<10 W, Max Rated 200 W
-   **Weight (Unpacked):** 4 kg
-   **Sold As:** Single unit

SUBWOOFER

-   **Frequency Response:** 28 Hz – 120 Hz (when mounted in optimum enclosure)
-   **Nominal Impedance:** 8 ohms
-   **Sensitivity (1W@1M):** 86 dB
-   **Maximum SPL:** Single unit: 109.8 dB; Pair: 115.8 dB
-   **Power Handling (RMS):** 150 W
-   **Cut-Out Dimensions:** 280 x 280 mm (11 x 11")
-   **Mounting Depth:** 89.98 mm (3½")
-   **Fixing Type:** 4-position Tri-Grip dog-leg fixings
-   **Connection:** Gold-plated"push"type terminals
-   **Construction Material:** Mineral-filled ABS plastic (RoHS2 compliant)
-   **Overall Dimensions (H x W x D):** 302 x 302 x 92.28 mm (11⅞ x 11⅞ x 3⅝")
-   **Overall Dimensions (Including Grille, H x W x D):** 314.21 x 314.21 x 100.78 mm (12⅜ x 12⅜ x 3¹⁵/₁₆")
-   **Weight:** 3.8 kg
-   **Sold As:** Single unit
-   **Warranty:** 1 Year

## Details

- **Price:** 899.0 GBP
- **Vendor:** Monitor Audio
- **Type:** Subwoofers

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 899.00 GBP | In stock |

## Images

- Monitor Audio In Wall Subwoofer Package - Single - 250W - K&B Audio
- Monitor Audio In Wall Subwoofer Package - Dual - 250W - K&B Audio
- Monitor Audio In Wall Subwoofer Package - Dual - 250W - K&B Audio
- Monitor Audio In Wall Subwoofer Package - Dual - 250W - K&B Audio
- Monitor Audio In Wall Subwoofer Package - Dual - 250W - K&B Audio
- Monitor Audio In Wall Subwoofer Package - Dual - 250W - K&B Audio
- Monitor Audio In Wall Subwoofer Package - Dual - 250W - K&B Audio
- Monitor Audio In Wall Subwoofer Package - Dual - 250W - K&B Audio
- Monitor Audio In Wall Subwoofer Package - Dual - 250W - K&B Audio
- Monitor Audio In Wall Subwoofer Package - Dual - 250W - K&B Audio

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> Source: [K&B Audio](https://www.kbaudio.co.uk/products/monitor-audio-in-wall-subwoofer-package-single)
> Updated: 2026-07-05