Radian produces premium replacement diaphragms compatible with a wide range of popular compression drivers used in professional audio, studio, and home speaker systems. Designed for superior reliability and performance, each diaphragm features an aluminum alloy dome paired with a specially engineered Mylar® surround to deliver high efficiency, smooth frequency response, exceptional clarity, and extended high-frequency bandwidth.

Built using advanced materials and precision manufacturing processes, Radian replacement diaphragms are designed to meet or exceed original factory performance specifications. Every diaphragm is proudly made in the USA and trusted by audio professionals, speaker repair technicians, contractors, and sound engineers worldwide.

Specifications:

• 1.75″ voice coil, aluminum alloy dome with Mylar surround diaphragm.

Compatible with select 16-ohm Altec compression drivers including:

• Altec 604
• Altec 802
• Altec 806
• Altec 808
• Altec 902
• Altec MR902
• Altec 904
• Altec 908
• Altec 909

Each diaphragm assembly utilizes a precision-formed, heat-treated structural aluminum dome bonded to a lightweight copper-clad aluminum voice coil on a high-temperature Kapton® former. This design provides outstanding strength-to-weight characteristics, resulting in low distortion, excellent transient response, and highly accurate music and vocal reproduction for theaters, auditoriums, churches, stadiums, studios, and live sound applications.

The specially developed Mylar® surround improves durability while reducing fatigue stress commonly found in other compression driver diaphragms. This advanced suspension design also enhances damping characteristics for smoother, more linear output with exceptional sonic detail and clarity.

Radian’s high-temperature adhesives and advanced voice coil materials allow these replacement diaphragms to handle demanding RMS and peak power levels while maintaining long-term reliability and consistent performance.

Designed for fast and simple field replacement, the self-aligning diaphragm and voice coil assembly ensures accurate installation and proper polarity alignment comparable to the original factory component.

Known for their outstanding power handling, reliability, smooth high-frequency response, and low distortion, Radian replacement diaphragms remain a preferred choice for loudspeaker repair centers, system integrators, touring professionals, and audio engineers around the world.