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Monitor Audio In Wall Subwoofer Package - Single - 250W

Monitor Audio  |  SKU: KB01839

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£899.00 £1,015.00

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60 Day Returns + Warranty

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We call it the “Happy Sound Guarantee”.

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Warranty

K&B Audio are authorised dealers for Monitor Audio. All sales come with a manufacturers warranty and full technical support.

Description

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.

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 (8 lb 12 oz)
  • 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 (8 lb 6 oz)
  • Sold As: Single unit

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

Downloads

AMPLIFIER

SUBWOOFER

Payment & Security

Secure Payments

  • American Express
  • Apple Pay
  • Diners Club
  • Discover
  • Google Pay
  • Klarna
  • Maestro
  • Mastercard
  • PayPal
  • Shop Pay
  • Visa

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

Authorised Dealer

K&B Audio are authorised dealers for Monitor Audio. All sales come with a manufacturers warranty and full technical support.

HEAR BEFORE YOU BUY

Visit Our Showroom

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60 DAY RETURNS

Happy Sound Guarantee

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Why K&B Audio

Over a Decade of Experience
Established in 2013, we’ve been helping customers enjoy hassle-free home audio for more than 10 years.

Shop with Confidence
Our 'Happy Sound Guarantee' guarantees you expert advice, 60 day returns and free delivery on orders over £50.

35,000+ Satisfied Customers
We’ll always help you find the right solution for your needs, not just what boosts our bottom line. Don’t just take our word for it – read our glowing customer reviews.

Extensive Product Range
With the top brands, carefully curated bundles and thousands of home audio products in stock, we’ve got something for every setup.

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