KEF Reference 8b 2 x 9-Inch Force-Cancelling Powered Subwoofer
Model Reference 8b
Price on Request
Availability: In Stock
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- Force cancelled closed box powered subwoofer with two 225 mm (9 in) bass drivers
- 18 Hz (-6 dB) and 24 Hz (±3 dB) free-space response, 110 dB maximum output
- 2 × 500 W Class D built-in amplifier
- 398 × 365 × 429 mm, 34 kg
- Authorized KEF Reseller
- Manufacturer Warranty
- Fast UAE Delivery
- Expert Project Support
Delivery, Warranty, Returns and Installation
- Delivery
- Fast UAE Delivery: Same-Day or Next-Day Delivery Available, Subject to Product Availability and Location. Free Delivery on Orders Above AED 2,000.
- Warranty
- Manufacturer Warranty with Local UAE Support where applicable.
- Returns
- B2B Orders are non-returnable. Please confirm product specifications and compatibility before ordering.
- Installation
- Site Surveys, System Design and Professional Installation are available across the UAE.
Product details
Overview
What is the KEF Reference 8b?
The KEF Reference 8b is a force cancelled closed box powered subwoofer from KEF with two 225 mm (9 in) bass drivers. It covers 18 Hz (-6 dB) and 24 Hz (±3 dB) and reaches 110 dB maximum output, driven by a built-in amplifier of 2 × 500 W Class D. Home cinema and hi-fi buyers in the UAE specify it to add low-frequency output to a KEF or other speaker system.
The KEF Reference 8b is a powered subwoofer: the amplifier is built in, so it connects to an AV receiver or amplifier with a subwoofer output using line-level inputs, speaker-level inputs and a link out. KEF lists a force cancelled closed box design with two 225 mm (9 in) bass drivers.
Why this product
Key Benefits
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Powered design
The KEF Reference 8b is a force cancelled closed box powered subwoofer with two 225 mm (9 in) bass drivers and a built-in amplifier rated 2 × 500 W Class D.
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Frequency response
KEF lists 18 Hz (-6 dB) and 24 Hz (±3 dB) with a maximum output of 110 dB.
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Inputs
KEF lists line-level inputs, speaker-level inputs and a link out.
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Size and weight
398 × 365 × 429 mm, height by width by depth, and 34 kg (75.0 lb).
Use cases
Applications
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Home cinema low-frequency channel
The KEF Reference 8b adds the subwoofer channel to a multichannel system through the subwoofer output of an AV receiver.
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Hi-fi stereo systems
Add the KEF Reference 8b to a stereo speaker pair to extend the bass range to 18 Hz (-6 dB) and 24 Hz (±3 dB).
Technical details
Technical Specifications
System
- System Type
- Force cancelled closed box
- Bass Driver
- 2 × 225 mm (9 in)
- Crossover Frequency (Low-Pass)
- Variable frequency: 40 Hz to 160 Hz Variable slope: 12 dB/oct, 18 dB/oct, 24 dB/oct LFE mode: 350 Hz, 18 dB/oct
Frequency
- Frequency Range (-6 dB), free space at 90 dB output
- 18 Hz
- Frequency Response (±3 dB), free space at 90 dB output
- 24 Hz
Power
- Amplifier
- 2 × 500 W Class D with switched mode power supply and DSP based control section
- Power Requirements
- 100 V to 120 V / 220 V to 240 V ~50/60 Hz
- Power Consumption
- 1000 W
Connectivity
- Maximum Output
- 110 dB
- Line Inputs
- RCA phono sockets, Analog XLR socket
- Speaker-Level Inputs
- Yes
- Line Output (Link Out)
- RCA phono sockets
Physical
- Cabinet Volume
- 23 L
- Dimensions (H × W × D)
- 398 × 365 × 429 mm
- Weight
- 34 kg (75.0 lb)
- Finish
- Deep piano black
Ownership and support
Ownership & Support
Warranty
The KEF Reference 8b is covered by the standard KEF manufacturer warranty. The exact warranty term is confirmed at order.
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