I just purchased a 3 HP G0441 about 3 weeks ago. The machine is built
like a tank. After wiring it, I mounted the motor/turbine blade
housing on the wall (yes, it looks a lot more like a turbine impeller
than a "fan blade"). I turned the machine on - it was terrifying. My
sound meter measured it at 103 DB at 2 meters - BUT - this was without
all the other hardware mounted to the machine.
After full assembly, it is 87 DB at 3 meters in a small shop. This
noise level is just fine by me but considerably more than the 83 DB at
1 meter they told me during my pre-purchase interview.
I have not yet put together all the mechanical to test this machine's
effectiveness but, by the construction of the unit, and the amount of
air that thing is moving when turned on, I bet it's performance at the
tools will be excellent.
Wall mounting the motor housing 8 feet off the ground took 3 people and
was still quite difficult. Assembly after that point was a snap. The
instructions/manual is very good.
When the unit was shipped, the packaging was a bit beat up and Grizzly
had not packed the unit very well. As a result, the intake barrel had
a big scratch/gouge on it from a nearby bolt. They replaced the part
expeditiously but provided no compensation for the hassle of dealing
with returning such a large part.