A good place to look would be the Harbeth Usergroup on Harbeth's website. Alan Shaw, the owner participates in the forums. That question has undoubtedly been answered there already
Harbeth 7es2 vs Harbeth 7es3
I'm curious to what difference these speakers have. I researched a Harbeth 7es2 for sale. The seller claimed the woofer was replaced with the woofer from the Harbeth 7es3 by a dealer and the dealer claims the woofer speakers are identical with both models. Any input would be appreciated.