All the Nikkormats are generally acknowledged to have louder shutters than the Nikon F/F2/F3 equivalents...
" The Nikkormats are based on the copal metal shutter, noticeably louder than the titanium foil shutter of the F2 and F."
I find my Nikkormats (FT2 and FT3) are noisier than my Nikon F, but actually quieter than the F2 I used to have. While they are fairly loud, I do not find the noise objectionable (no "ping" or extended ringing noise, just "kerthunk")