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Category: Subwoofer

KEF Kube 8b- 8'' Subwoofer

    • Key Specifications & Features

      • Driver: 1 × 8″ (200 mm) long-throw woofer. KEF Europe+2Best Buy Files+2

      • Amplifier: Built-in Class-D amplifier rated at 300 W RMS (shared across the Kube “b” range) according to KEF. Best Buy Files+1

      • Frequency response: ~34 Hz to 140 Hz (-6 dB) for the Kube 8b. Best Buy Files+1

      • Enclosure: Sealed “acoustic suspension” cabinet for tighter, more controlled bass. assets.kef.com+1

      • Input options: Line-level (RCA/LFE) and speaker-level inputs, allowing connection flexibility. Crutchfield+1

      • Controls: Variable low-pass crossover (40-140 Hz), phase switch (0/180°), placement-preset EQ (free-standing, wall/cabinet, corner) built in (via DSP) to adapt to room and placement. Crutchfield+1

      • Dimensions & weight: approx 293 × 293 × 310 mm (H×W×D) per KEF spec sheet. Weight ~11.3 kg. Best Buy Files+1

Description

8-inch bass driver active subwoofer
Don’t let its compact size fool you, the Kube 8b may not take up much space, but the bass it delivers is anything but small. With an 8-inch driver, the Kube8b is perfect for smaller living rooms. It shares the 300 Watts Class D amp from the bigger Kubes and has PBX technology to extend the bass depth dynamically.

Warranty:

1-year manufacturer’s warranty

Features:

  • 8″ active subwoofer. Ensures robust bass with low distortion.
  • 300W Class-D amplifier with DSP preamplifier/EQ…
  • Intelligent Bass Extension (BX) algorithm. …
  • KEF smart connect intelligent inputs. …
  • Placement tuning presets.

Hear new dimensions in sound with Kube subwoofers
The Kube 8b effortlessly unleashes explosive power. PBX technology extends the bass depth dynamically, and KEF’s unique ability to design, build, and integrate the driver in-house takes optimization to a whole new level. Deliver immersive music and home theatre sound that takes you to the heart of the performance.

Immersiveness
Go deep or go home. KEF’s design and engineering team worked in chorus to develop BX. This Intelligent Bass Extension algorithm creates an extended depth that unlocks the full potential of the custom driver. Giving you unparalleled precision and ultimate synchronicity between amplifier, driver, and sealed cabinet.

Easy configuration
Kube subwoofers offer unmatched setup flexibility. A range of LFE, line, and speaker-level inputs, phase selection, and DSP-controlled EQ settings help you get the best from a Kube. Put it in a convenient position, match it to any main speaker or type of music system, and start exploring new depths in the sound.

Integration
KEF is quite possibly the only high-end manufacturer that designs, engineers, and assembles the driver, cabinet, and circuitry in-house. This level of integration means we are committed to pure sound, and the Kube stays true to that ideal. The result is a driver and amplifier that are perfectly in tune.

Technical Specifications:

WEIGHT 11.3kg
DIMENSIONS (with Rear panel and feet / H x W x D) 293 x 293 x 310mm (11.5 x 11.5 x 12.2in.)
DESIGN Powered Subwoofer (sealed)
POWER REQUIREMENTS 100V – 120V / 220V – 240V ~ 50 / 60Hz
UNIT MEASUREMENT Piece
VARIABLE LOW-PASS FILTER 40Hz – 140Hz & LFE
FREQUENCY RESPONSE 34 to 140Hz (-6dB)
MAXIMUM OUTPUT 105dB
RECOMMENDED AMPLIFIER POWER 300W RMS
AMPLIFIER TYPE Built-in Class-D
DRIVE UNITS 1 x 200mm (8in.)
INPUTS RCA phono sockets Speaker level inputs
ANALOGUE INPUT RCA phono sockets Speaker level inputs

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