Description

The KEF KC62 is an ultra-compact subwoofer that defies its small size to deliver remarkably deep, accurate, and powerful bass. It’s designed to provide a thrillingly immersive experience for music, movies, and gaming, making it a compelling option for those who want high-performance bass without a large, intrusive cabinet.

Here’s a detailed product description of the KEF KC62:

KEF KC62

Core Concept & Design:

• “The Biggest Small Subwoofer”: KEF markets the KC62 as an exceptionally compact subwoofer that delivers performance far beyond its dimensions. It’s roughly the size of a football, making it incredibly easy to integrate into any living space without dominating the room.
• Aesthetic & Build Quality: Crafted from extruded aluminum, the KC62 boasts a curved cabinet that is both visually appealing and highly functional. This strong, light magnesium (or extruded aluminum, as some sources mention) cabinet provides rigidity, minimizing unwanted vibrations and serving as an effective heat sink for the powerful internal amplifiers. It’s available in sophisticated finishes like Carbon Black, Mineral White, and Titanium Grey.
• Sealed Cabinet Design: The KC62 utilizes a sealed enclosure, which contributes to its tight, accurate, and controlled bass response, as opposed to ported designs that can sometimes exhibit less precise transients.

Groundbreaking Technologies for Performance:

The KC62’s impressive performance from its small form factor is attributed to several innovative KEF technologies:

Uni-Core® Technology (Patent-Pending): This is the heart of the KC62’s ability to maximize bass from minimum space. It revolutionizes the traditional force-canceling design:

• Dual Drivers, Single Motor: Instead of two separate drivers, Uni-Core combines both 6.5-inch force-canceling drive units into a single motor system.
• Concentric Voice Coils: The two voice coils are concentrically arranged with different diameters, allowing one to be nestled within the other. This unique arrangement allows the voice coils to travel independently within their own gap without colliding.
• Reduced Cabinet Volume, Increased Excursion: This ingenious design significantly reduces the cabinet volume (by over a third compared to KEF’s KF92) while simultaneously increasing the excursion of the drivers, leading to exceptional output and depth for its size.
• Force Cancellation: The opposing driver configuration effectively cancels out cabinet vibrations, ensuring clean, undistorted bass.

P-Flex Surround (aka Origami Surround): To handle the extreme pressures generated within the compact sealed enclosure, KEF developed a new, pressure-resistant driver surround.

• Pleated Design: Inspired by the Japanese art of origami, the P-Flex surround features a unique pleated design.
• Precise Driver Movement: This design allows the drivers to move more precisely compared to traditional surrounds, which can limit sensitivity or collapse under high pressure. The result is deeper bass extension and a more accurate and detailed bass reproduction.

Smart Distortion Control Technology (Patent-Pending): This advanced motional feedback system actively reduces distortion.

• Real-time Monitoring: It measures the current in the voice coil and detects any minute abnormalities.
• Non-linear Distortion Correction: The system applies feedback to correct these non-linear distortions, reducing Total Harmonic Distortion (THD) by up to 75% for a purer, less colored bass.

Music Integrity Engine (MIE): KEF’s proprietary Digital Signal Processing (DSP) algorithms fine-tune the KC62’s performance.

• iBX (Intelligent Bass Extension): This algorithm optimizes bass extension for maximum impact.
• SmartLimiter: This feature constantly analyzes the signal to prevent clipping and ensure the perfect relationship between all components, maintaining dynamic range and clarity.

Amplification & Power:

• High-Power Class D Amplification: The twin 6.5-inch drivers are powered by a robust 1000W RMS (2 x 500W RMS) of specially designed Class D amplification. This provides exceptional control and the ability to deliver sudden bursts of power, crucial for dynamic music and movie soundtracks.

Connectivity & Integration:

• Versatile Inputs: The KC62 offers a range of connection options to integrate with almost any audio system:
• RCA phono sockets (line-level inputs)
• Speaker level inputs (allowing connection directly from an amplifier’s speaker outputs)
• SmartConnect: KEF’s SmartConnect technology simplifies connection and setup.
• Line Output with High Pass Filter (HPF): An RCA phono line output with an adjustable high-pass filter (40Hz – 120Hz, or Bypass) allows for fine-tuned integration with main speakers, ensuring a seamless handover of frequencies.
• Wireless Compatibility: The KC62 is compatible with the optional KEF KW1 wireless subwoofer adapter kit, providing a simple and high-quality wireless connection for flexible placement.

Room Placement Equalization (5 Pre-sets):

To ensure consistent performance regardless of placement, the KC62 includes five pre-set Room Placement Equalization modes:

• Free Space: For placement away from walls.
• Next to a Wall: Optimizes performance when placed close to a wall.
• In a Corner: Adjusts for corner placement, which naturally reinforces bass.
• In a Cabinet: Compensates for placement within furniture.
• Apartment Mode: A specialized setting for apartment living, likely to reduce excessive low-frequency output that could disturb neighbors.

In summary, the KEF KC62 is a triumph of acoustic engineering, packing immense bass capabilities and advanced technology into an astonishingly compact and aesthetically pleasing package. It offers a powerful, accurate, and versatile low-frequency solution for discerning audiophiles and home theater enthusiasts who value performance without compromising on space or design.

Product Technical information

KEF KC62 Subwoofer – Frequently Asked Questions

Q: Q: What makes the KEF KC62 so special/unique for its size?
A: The KC62’s unique selling proposition is its ability to deliver incredibly deep, powerful, and accurate bass from an ultra-compact enclosure. This is primarily due to KEF’s innovative Uni-Core® Technology (dual force-canceling drivers with concentric voice coils on a single motor), P-Flex Surround (origami-inspired design for high excursion under pressure), and Smart Distortion Control Technology (active distortion reduction). These technologies allow it to defy traditional physics limitations.

Q: Is the KC62 suitable for large rooms?
A: While incredibly capable for its size, KEF recommends it for optimal performance in rooms sized 5 – 50m². For very large rooms or those desiring extreme output, KEF’s larger KF92 or multiple KC62s might be considered, though the KC62 can still surprise in bigger spaces.

Q: What input options does the KC62 offer?
A: It provides RCA phono sockets (line-level inputs) and speaker level inputs, making it compatible with almost any audio system.

Q: How do I set the crossover frequency?
A: The KC62 has a variable low-pass filter (40Hz – 140Hz, LFE). If using the LFE input from an AV receiver, the receiver typically manages the crossover. If connecting via line-level or speaker-level inputs directly to a stereo amplifier, you would adjust the crossover knob on the KC62 to blend seamlessly with your main speakers. Generally, you want the subwoofer to pick up where your main speakers start to roll off in bass.

Q: What is Uni-Core® Technology?
A: Uni-Core is KEF’s patented technology that combines two force-canceling drivers into a single motor system. It uses concentric voice coils of different diameters, allowing them to overlap and occupy less space while still achieving long excursion, resulting in powerful bass from a smaller cabinet.