Boulder Amplifiers 860 User Manual
Page 10
1-5
GETTING
STARTED
POLARITY
Please note that the 860 Stereo Power Amplifier conforms to the
standard of Pin 2 as the high or ”hot” for the balanced inputs.
The polarity of the 860 Stereo Power Amplifier is such that a positive-
going transition at Pin 2 will produce a positive-going transition at the
“+” output terminal.
CONNECTING YOUR LOUDSPEAKERS
Do not use any wrenches on the loudspeaker binding posts! Tighten
these connectors only by hand.
WARNING: This is a high power amplifier! When driven, there is a
high voltage potential at the terminals.
Connections should only be made with the AC mains disconnected!
Select spade terminals which accept 6 mm or .250 inch diameter
binding posts.
There is no provision for the use of banana plugs. These plugs have
been proven to come loose over time which increases contact resistance
and distortion. For the same reason we also do NOT recommend the use
of banana plugs at the loudspeaker end.