Filter
Top Products
Chapter 2: Connections
RA150/300/500 Reference Manual 9
CHAPTER 2
CONNECTIONS
UNPACKING AND INSPECTION
Your Alesis RA150/300/500 was carefully packed
at the factory, and the shipping carton was designed
to protect the unit during shipping. Do not discard
the packing materials; they may be helpful in the
unlikely event that you need to return your
RA150/300/500 for servicing, or for transporting
the amplifier when it is not mounted in a rack or
other enclosure.
The shipping carton should contain the following
items:
• RA150/300/500 amplifier
• This instruction manual
• Power cable
• Alesis Warranty card
It is important to register your purchase;
if you have not already filled out your
warranty card and mailed it back to
Alesis, please take the time to do so now.
Carefully unpack the amplifier and inspect it for
physical damage originating in shipping. If damage
is discovered and the amplifier was shipped to you,
immediately contact the transportation carrier and
make certain that the packing materials are
preserved for inspection. You as the consignee
must make any shipping claims; neither your dealer
nor Alesis can do this for you. If the amplifier was
not shipped to you, i.e. you picked it up from your
dealer, contact the dealer as soon as possible for
assistance.
POWER CONSIDERATIONS
THE AC CORD AND GROUNDING
The RA150/300/500’s IEC-spec AC cord (do not
substitute any other type of AC cord) is designed to
connect to an outlet that includes three pins, with
the third, round pin connected to ground ("earth").
The ground connection is an important safety
feature designed to keep the chassis of electronic
devices such as the RA150/300/500 at ground
potential. Unfortunately, the presence of a ground
contact in an AC socket does not always indicate
that an outlet is properly grounded. Use an AC line
tester to determine this. If the outlet is not
grounded, consult with a licensed electrician.
The audio ground (pin 1 of the XLR, the sleeve of
the 1/4" jack) is not isolated from the chassis.
Tip: You don't have to use the provided 6-foot long
AC cord. Many electronic stores carry the
standard "NEMA-to-CEE" cable in lengths
from 6 inches to 20 feet. This is better than
wrapping the cord in a coil if it is too long, or
using extension cords if it is too short.
DO NOT OPERATE ANY ELECTRICAL
EQUIPMENT WITH UNGROUNDED
OUTLETS. PLUGGING THE RA150/300/500
INTO AN UNGROUNDED OUTLET, OR
“LIFTING” THE UNIT OFF GROUND WITH A
THREE-TO-TWO WIRE ADAPTER, CREATES
A HAZARDOUS CONDITION. ALESIS
CANNOT BE RESPONSIBLE FOR PROBLEMS
CAUSED BY USING THE RA150/300/500
OR ANY ASSOCIATED EQUIPMENT WITH
IMPROPER AC WIRING.