Zeiler Audio SP-02 – High-Sensitivity Loudspeakers with a Coaxial Horn

The new Zeiler Audio SP-02 loudspeakers are based on a professional 15-inch coaxial driver featuring a cone made of fiberglass-reinforced paper and a neodymium magnetic system.

The high-frequency range is handled by a compression driver with a sensitivity of 113 dB, loaded into a horn with an elliptical 80 × 60-degree throat, ensuring constant directivity and excellent coherence. An overall system sensitivity of 97 dB and an impedance that never drops below 8 ohms make the model an easy load for virtually any amplifier.

The design uses a low-loss two-way crossover network with custom-made paper-in-oil capacitors, and all internal wiring has undergone cryogenic treatment.

The low-frequency driver operates in a bass-reflex enclosure, with the port firing downward. The cabinet walls are a sandwich construction made from multiple layers of wood and non-wood materials of different density and hardness. The speaker dimensions follow the golden ratio principle, which helps control resonance. Zeiler Audio SP-02 loudspeakers are available in a wide range of finish options.