PWK Inspecting Western Electric Horn

This is a great picture taken by Max Potter a Western Electric engineer and audio pioneer. He was the inventor of the P-Trap a modification to the early Khorn crossover networks to remove the 9 KHz “glitch” inherent in the early K55V (push pin) driver. Max Potter passed away recently but he influenced many in the industry.


Max Potter and PWK at the Musuem Of Audio History.