In the Harbeth User's Group, regarding the new C7ES3 vs the C7ES2, Alan Shaw states:
"I think the differences between the C7ES2 and C7ES3 have been documented here or on the main Harbeth web site ....
They are:
C7ES3 has ....
1. A new woofer
2. A new tweeter
3. A new crossover
4. Revisions to the cabinet damping arrangement that would be difficult to retro-fit to ES2 cabinets
5. Longer ports
6. Single wire, not bi-wire terminals
A Compact 7ES3 is the sum of all these parts and any lesser combination is not, technically a Compact 7ES3. At this time, and especially because of item 4 above, there is no upgrade path and we do not want to have a half-way situation between C7ES2 and 3 whereby 1, 2, 3, and 5 are upgraded but not item 4 (the cabinet)."
Based on the above, the C7ES2 and C7ES3 woofers are not identical.
"I think the differences between the C7ES2 and C7ES3 have been documented here or on the main Harbeth web site ....
They are:
C7ES3 has ....
1. A new woofer
2. A new tweeter
3. A new crossover
4. Revisions to the cabinet damping arrangement that would be difficult to retro-fit to ES2 cabinets
5. Longer ports
6. Single wire, not bi-wire terminals
A Compact 7ES3 is the sum of all these parts and any lesser combination is not, technically a Compact 7ES3. At this time, and especially because of item 4 above, there is no upgrade path and we do not want to have a half-way situation between C7ES2 and 3 whereby 1, 2, 3, and 5 are upgraded but not item 4 (the cabinet)."
Based on the above, the C7ES2 and C7ES3 woofers are not identical.