In mid 90s Cerwin Vega introduced a now mythical woofer series called Stroker. It had two spiders and a badass metal ring horned with a stabilising rod instead of a dust cap (
ST124D - STROKER 2000 Watts 4 Ohms/1000Watts RMS Power Handling Max 12-Inch Dual Voice Coil Subwoofer - Cerwin Vega
Amazon.com: Cerwin Vega ST104D 10" Subwoofer for Car Audio with 1600W Max, 800W RMS, and Dual Voice Coil and 4 ohm Per Coil Impedance, Car Audio Subwoofer, Black and Yellow, Single Unit :
Cerwin Vega Mobile Stroker ST104 Woofer, 800 W RMS, 1600 W PMPO - Walmart.com