8″ x 3″ Progressive 2-Layer Spider Pack With Green Mesh

This 8″ x 3″ progressive roll spider pack with green mesh overlay is built for high-power subwoofer applications where strength and control are critical. Made from a thicker poly-cotton fabric than standard spiders and impregnated with stiffening resin, this design provides greater durability, improved heat resistance, and more reliable compliance under extreme conditions.

Progressive Roll Design

This spider features a varying corrugation pattern where the inner rolls are softer for small, controlled movements, while the outer rolls stiffen during large excursions. This creates non-linear compliance, meaning the restoring force increases as the voice coil moves farther from rest. The result is smooth low-level response combined with stability and control at peak excursion.

Performance Benefits

• Stronger Build: Thicker poly-cotton fabric resists fatigue and heat better than standard spiders.

• Dynamic Range: Handles greater excursion and higher power levels with progressive stiffness.

• Reliability: Reduces coil rub and mechanical failure in high-stress environments.

• Unique Style: Green mesh overlay adds visual appeal while reinforcing the spider structure.

Make sure you’re using the proper adhesive when attaching the spider to both the coil and the frame. The recommended option is CA glue, which we offer in multiple viscosities. Our most popular formula is the EC4000 CA glue, available either as a standalone bottle or as a complete kit with activator.