I just tried out my SM8 48 degree today in the same finish and it is definitely tinny. The 58 SM8 did not have the same sound. It is very odd. At first I thought I had impacted a rock it was that bad.
Golfer of 12 years. Serious golfer since 2015. Currently game a GBB Epic SZ driver, Adams 3 wood,titlesit 913hd 18* hybrid, Adams Dhy 21*, TM MC 2014 5-PW and sm4 50, 56, 60.