WOLF VON LANGA 12639 SON
WOLF VON LANGA 12639 SON
Reference Sound. Remarkable Size. Timeless Engineering.
The Wolf von Langa SON proves that true innovation lies in perfecting fundamentals. Reviving legendary field-coil technology and refining it to modern reference standards, this loudspeaker delivers exceptional realism, scale, and musical authority.
Elegant and compact, the SON produces a full-range, room-filling sound that far exceeds expectations for its size - all rooted in precision German engineering and decades of acoustic expertise.
FEATURES OF WVL 12639 SON
- Field-Coil Technology — Reimagined :- At the heart of the SON is a current-controlled field-coil driver, powered by an external constant-current supply instead of a traditional magnet. This ensures a highly stable magnetic field, delivering lower distortion, faster transients, and more natural dynamics. The included fourth-generation Wolf von Langa power supply is engineered for absolute driver control and lifelike musical flow.
- Precise, Full-Bodied Low & Midrange :- The custom 11-inch German-built field-coil driver uses a lightweight cone and underhung voice coil for exceptional speed and control. A rear passive radiator extends bass response cleanly and quietly, producing deep, articulate low frequencies from a compact cabinet.
Open, Spacious High Frequencies :- A custom Mundorf Air Motion Transformer (AMT) dipole tweeter delivers airy, detailed highs with a wide, three-dimensional soundstage. Its adjustable top-mounted design allows precise time alignment and seamless integration.
Easy System Matching :- With 94 dB sensitivity and an 8-ohm load, the SON works effortlessly with low-power tube amps, solid-state designs, and Class A or SET amplifiers, delivering large-scale sound with modest power.
German Craftsmanship :- Each speaker is hand-built and calibrated in Germany, featuring premium components, WBT nextgen™ terminals, bi-wire/bi-amp capability, adjustable field-coil tuning, and vibration-controlled footers — all within a refined, furniture-grade cabinet.
The Sound Character
The SON is known for :-
- Expansive, holographic imaging
- Natural, expressive vocals
- Fast, clean dynamics
- Deep, controlled bass beyond its size
- Seamless coherence from top to bottom
TECHNICAL SPECIFICATIONS
Type: 2-way floorstanding loudspeaker with passive radiator
Bass/Mid Driver: 11″ Wolf von Langa field-coil, current-controlled driver
Tweeter: Custom Mundorf dipole Air Motion Transformer (AMT)
Frequency Response: 25 Hz – 25 kHz (±3 dB)
Impedance: 8 Ohms
Sensitivity: 94 dB (1W / 1m)
Power Handling: Up to 150 W
Field-Coil Power Supply: External constant-current unit (included)
Connections: WBT nextgen™ terminals for bi-wiring/bi-amping
Dimensions (Bass/Mid Module): 404 mm (W) × 872 mm (H) × 300 mm (D)
Dimensions (Tweeter Module): 404 mm (W) × 170 mm (H) × 60 mm (D)
Weight: Approx. 42 kg per speaker

















