وسط الحلق
Halfway up the throat. ʿAyn constricts it and lets the voice through; ḥāʾ narrows the same spot with no voice, a clear hot whisper.
Letters made here
Common mistake
Saying ḥāʾ as an English h. English h is made further down and much softer — ḥāʾ needs a real squeeze at the middle of the throat.