I know that's pretty subjective. But I finally saw a Woodworking at Home segment where he fires up his mortiser and I think mine are louder than his.
Do they quiet down over time? Is it more a case of using the inexpensive Delta bits that ship with the machine? As an experiment, I varied the amount of bit exposed beyond the chisel from 0" to 1/4" (IIRC the manual says a 1/16 - 3/16" exposure) and didn't hear a difference.
Also - the instructions are pretty vague about how much of the bit tip protrudes below the chisel corners. Again I think the manual says 1/16-3/16" "depending on the wood."
Can someone lend some guidance on how they set up their hollow chisel mortisers?