"dado_maker" wrote in message
...
Ok before the nieghbors get together and convene a special meeting of
the HOA and push some iminant domain thing, I am in the process of
snip
Thanks,
Martin

The air moving past the blades gets "chopped" similar to how an old
fashioned siren (rotary) works. There is a substantial sound level
difference on my planer as well when I pull the DC line off.
The bottom line is if you cut back too much on the DC, you'll start having
chip imprints in the wood.
Tom