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

Experience even deeper, more impactful bass with the Monitor Audio In Wall Subwoofer Package – Dual.

Designed for home cinema enthusiasts and music lovers who want extra low-end authority, this package includes two IWS-10 in-wall subwoofers, two IWB-10 back boxes, and the powerful IWA-250 amplifier.

Delivering cinematic bass while remaining completely hidden from view, this system is perfect for media rooms and dedicated home theatres where both performance and design matter.

The dual IWS-10 subwoofers work in harmony to provide greater bass extension and headroom, ensuring explosive movie effects and full-bodied musical detail.

Each subwoofer is housed within its own rigid IWB-10 back box, guaranteeing consistent performance and minimising sound transfer to adjoining spaces.

The dedicated IWA-250 amplifier powers both subwoofers with precision, offering room EQ adjustments to fine-tune bass performance to your environment.

**FEATURES**

-   **Dual IWS-10 In-Wall Subwoofers:** Two slim 10” C-CAM drivers deliver powerful, extended bass for a more immersive experience.
-   **Two IWB-10 Back Boxes:** Each subwoofer is mounted in its own sealed enclosure for accurate, consistent performance and reduced sound leakage.
-   **IWA-250 Subwoofer Amplifier:** 250W Class-D power optimised to drive two IWS-10 units with precision and control.
-   **Discreet Installation:** Hidden in-wall design ensures a clean, modern look with no compromise on room aesthetics.
-   **Cinematic Performance:** Dual subwoofers provide greater output and impact, ideal for larger rooms and dedicated home theatres.
-   **Perfect System Match:** Seamlessly integrates with Monitor Audio’s architectural speakers for a complete hidden audio solution.

This dual package delivers thunderous, cinema-grade bass performance while maintaining a discreet in-wall design – the perfect choice for those seeking the ultimate hidden audio upgrade.

###### 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
-   20M x 2 Core Speaker Cable

**SUBWOOFER**

-   2 x IWS-10 Subwoofer
-   2 x Grille
-   2 x Cut Out Template
-   2 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:** 1499.0 GBP
- **Vendor:** Monitor Audio
- **Type:** Subwoofers

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 1499.00 GBP | In stock |

## Images

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

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> Source: [K&B Audio](www.kbaudio.co.uk/products/monitor-audio-in-wall-subwoofer-package-dual)
> Updated: 2026-06-21