107 vs Aerial Acoustics 7B
The 7B's impedance is 6Ω against the 107's 4Ω, its sensitivity 86 dB against 90 dB, and its high-frequency extension 22 kHz against 20 kHz. Both share ways (3).
AI-generated product photo — not official manufacturer imagery.
LoudspeakersFloorstanding SpeakersDiscontinued
Estimated price (community-sourced)
$1,400
Around — community and catalog average, updates slowly
About the 107
The KEF 107, flagship of the Reference Series from the late 1980s to early 1990s, features advanced Coupled Cavity (CC) bass system with two 10-inch woofers in separate sealed enclosures feeding a shared cavity and port, minimizing distortion and vibration via push-pull configuration. It employs Conjugate Load Matching (CLM) for flat 4-ohm impedance, ferrofluid-cooled T33 1-inch metal-dome tweeter, 5-inch polypropylene-cone midrange (B110), and two 10-inch pulp-cone woofers (B250). Includes KUBE 107/2 active equalizer for LF/HF contour adjustments. Renowned for deep 20Hz bass extension, high 112dB output, and audiophile performance across genres, though demanding on amplifiers. No longer manufactured.
Specifications
Transducer Specifications
Driver and acoustic performance characteristics
- Sensitivity
- 90 dB SPL @ 1W/1m
- Impedance
- 4Ω
- Frequency Response
- 20 Hz - 20 kHz
- Power Handling
- 300W
- Min. Amplifier Power
- 50W
- Max. Amplifier Power
- 300W
Speaker Design
Driver configuration and enclosure design
- Configuration
- 3-way
- Driver Type
- dynamic
- Driver Size
- 10"
- Driver Count
- 3
- Enclosure Type
- isobaric
- Crossover Frequency
- 1.6 kHz
Physical Dimensions
Size, weight, and appearance
- Dimensions
- 330 × 1165 × 448 mm (W × H × D)
- Weight
- 45 kg (99 lbs)
- Available Colors
- natural walnut, rosewood
Key Specifications
Sensitivity: 90 dB
Impedance: 4Ω
Frequency: 20-20000 Hz
Specifications are community-contributed and may not be accurate or complete. Verify all details with the manufacturer before making purchasing decisions. Terms & Conditions