Thanks Tom.
Scan-Speak, formally VIFA, say they designed this midrange driver (Scan-Speak Discovery 12W/4524G00) specifically as a replacement for the original (now extinct) P11MH01-04, the original driver in the 3.6s. I am sure you are correct about the authenticity of sound, but I am wondering how close this driver gets in terms of technical performance and, most importantly, sound reproduction.