Construction of a Zobel network for audio amplifier - YouTube
Little Things: Using a Zobel Network to Reduce Harshness with Electrostatic Speakers - HomeTheaterHifi.com
Zobel network - Wikipedia
A Speaker Maker's Journey: Crossover Basics - The Zobel
Avondale Audio - On a technical note: The Zobel network. This seemingly innucuous collection of just three or four components has never, to my mind, been explained fully in its use. Visiting
Zobel network - Wikipedia
Loudspeakers and Crossovers
circuit design - What's the math behind the Zobel network on LM386 audio amplifier? - Electrical Engineering Stack Exchange
A Speaker Maker's Journey: Crossover Basics - The Zobel