Discover the PRO 18F4-2500W from GS Audio, part of the PRO DIVISION, designed for demanding applications in live, tuning, and high-end PA installations. This 18″ mid-bass transducer combines precise bass management with extended midrange reproduction and a 100 mm voice coil for improved thermal stability. The 460 mm paper cone with water-repellent treatment offers maximum mechanical stiffness and natural sound distribution, even at high sound pressure levels. With an optimized FERRITE MAGNETIC GROUP for maximum flux density and direct air circulation, harmonic distortions remain low. Discover the powerful versatility of the PRO 18F4-2500W for compact reflex systems and various professional audio configurations.

In 2026, GS Audio will launch the new PROFESSIONAL DIVISION, a speaker series designed to meet the strictest requirements of live, tuning, and high-end PA installation. This new reality emerged from in-depth experience in the high-performance car audio sector, aiming to transfer the same precise construction, reliability, and customization options to the field of professional audio systems.

Each transducer in the line is the result of careful design, where acoustic and mechanical construction work in sync to achieve linear response, low distortion, and sustained thermal stability.

Performance and Design

• The 18F4-2500W is an 18" (460 mm) mid-bass transducer with a 100 mm (4") voice coil, designed for applications with extended midrange and precise bass control.
• It is an ideal choice for compact reflex systems, bi-ampable in combination with 2"-3" drivers, as well as for use in stage and front-fill monitors.

Additional Features

• 460 mm corrugated cone: Made from pressed paper treated with water-repellent agents, it offers high mechanical stiffness even at maximum excursion and fully utilizes the 30 mm coil length. Its curved geometry helps maintain controlled sound distribution and natural reproduction of voices and acoustic instruments even at high sound pressures.
• 100 mm copper coil: uses IN-OUT technology on high-strength GFT-GFT fiberglass background. The inner and outer winding improve thermal dissipation and linearity, ensuring stability even under prolonged load.

Magnetic System and Cooling

• 220 mm FERRITE MAGNETIC GROUP: optimized for maximum flux density and force factor (BL). The rear ventilation holes of the T-Yoke promote direct air circulation in the air gap, reducing heat buildup and helping to decrease harmonic distortions and intermodulation, allowing for clean and faithful reproduction even at extreme SPL levels.
• CONCAVE CARBON DUST CAP: Absorbs and distributes the heat generated by the voice coil over the front surface of the cone; the concave shape improves internal ventilation and reduces the typical waste of conventional dust caps.

Versions and Applications

• The models 18F4-2500W and 18F4-2200SW share cone, coil, and magnet structure, but differ in mechanical configuration and intended use.
• W-VERSION: uses a dual centering unit and is optimized for the lower mid and midrange, ideal in combination with 2"-3" compression drivers in professional two-way systems.
• SW-VERSION: uses a single centering device that offers greater excursion and a deeper frequency response, perfect for woofer or subwoofer applications.