I switched out the limbs on my old Silvertip last night and dropped down in poundage by 4 lbs. Everything else stayed the same. Same brace height, same string, same arrows, same length limbs. The only thing I can see that's different is that the 56# limbs have horn tips and are FF compatible. The 52# limbs have black walnut tips and are not FF compatible. There is an obvious change in the noise level between these 2 setups. It's not "loud" mind you, Most would think I was being anal about it, but there is an obvious difference between the two. Anybody have an idea why?