JL Audio 13W7 / 13W7AE Subwoofer Spider

JL Audio 13W7 / 13W7AE Subwoofer Spider

The JL Audio 13W7 / 13W7AE progressive-roll spider is engineered for builders who need accurate suspension control, strong durability, and reliable centering in high-performance subwoofers. Its progressive roll design increases stiffness as excursion rises. As a result, the spider stays soft and responsive at low excursion, yet tightens its control during heavy bass output. This behavior mirrors the original JL 13W7 design and helps the voice coil avoid mechanical failure under high-stress conditions.

Progressive Compliance for High-Output Performance

The uniform corrugation pattern allows smooth movement at low levels. As the cone travels farther, the spider increases its restoring force. This transition keeps the voice coil centered in the magnetic gap and reduces the chance of bottoming out or rubbing. Because of this progressive compliance, the suspension stays controlled during hard hits while still delivering clean mid-bass response at lower volumes.

Durable Nomex Construction

Each 13W7 spider uses a tough Nomex fabric treated with a heat-resistant resin system. This material tolerates the extreme temperatures created by high-power amplifiers. It resists sag, tearing, and fatigue, allowing the suspension to maintain accuracy after long-term use. Builders who push their systems daily will appreciate the spider’s consistent performance.

Recommended Adhesives

For the best bond and long-term reliability, use:

• EC4000 Rubber-Toughened CA Glue

• BEP870 Epoxy

• FLEXP860 Epoxy

These adhesives handle the mechanical stress and heat found in high-power subwoofers.