Floorstanding speaker YG Acoustics Vesper 3

Vesper 3 – three-way floorstanding loudspeaker from the YG Acoustics Reference line with the hybrid Lattice tweeter

Vesper 3 is a three-way passive floorstanding loudspeaker belonging to the YG Acoustics Reference line, intended for demanding two-channel systems in real living spaces. It builds on the Carmel 3 model and its concept of reference-grade performance in compact dimensions, while adding another way, greater dynamic range and a deeper bass foundation. It is the result of a three-year development programme based on extensive research and simulations, subsequently verified by listening.

The driver complement consists of a 26 mm YG Lattice hybrid tweeter, an 18.5 cm midrange driver with a proprietary YG aluminium diaphragm and a neodymium motor, and a 22 cm bass driver with an exceptionally high flux-density motor. All diaphragms are made in-house and the motor systems are designed with an emphasis on low distortion across the entire operating range. The cabinet dimensions of 107 × 27 × 40 cm and a weight of 71 kg apiece reflect a massive, resonance-stable construction.

The connecting link is the third generation of the Ultracoherent crossover with crossover points at 92 Hz and 1.71 kHz, optimised simultaneously for frequency response, phase alignment, phase slope and transient response. The result is relative phase within ±5° wherever driver output falls within a 20 dB window. The circuit employs custom capacitors including pure metal-foil types, bifilar-wound resistors, damped Litz coils and an anti-resonant PCB with a low dielectric constant and dissipation factor; the circuit layout is computationally optimised to minimise interaction between components. Some of the know-how comes from the Titan research programme.

Usable response extends from 30 Hz to 40 kHz with very low distortion and precise unit matching. A sensitivity of 88 dB and an average impedance of 4 Ω with a 2.8 Ω minimum call for an amplifier with a stable current delivery. The crossover's rigorous phase coherence translates into a wide and deep soundstage with precise instrument localisation, while the bass driver with its powerful motor contributes authority and dynamics without compression. Fine detail remains legible even in the loudest passages, and the perceived scale of the sound exceeds the speaker's physical dimensions.

Key features

• Design: Three-way passive floorstanding loudspeaker from the Reference line
• Drivers: Hybrid Lattice tweeter and YG aluminium diaphragms
• Crossover: Third-generation Ultracoherent, crossing at 92 Hz and 1.71 kHz
• Phase: Relative phase within ±5° across the operating band
• Response: Usable output from 30 Hz to 40 kHz