Installations
6
Matica 500/900 Reference Manual
C
HAPTER
2
I
NSTALLATIONS
Unpacking and Inspection
Carefully unpack the amplifier and inspect it for physical damage originating in
shipping. Do not discard the packing materials; they may be helpful in shipping
the amplifier when it is not mounted in a rack or other enclosure.
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.
Physical Installation
Alesis Matica 500 and Matica 900 amplifiers take up only two rack spaces each
(3.5Ó panel height). If multiple amplifiers are mounted in the same rack, there
should be at least one rack space left between them; solid blank panels may be used
to fill the spaces, but perforated grilles used as fillers will help exhaust the hot
air from within the rack.
An exhaust fan is required in a rack with a closed back to assure sufficient air
exhaust capacity. If the rack has a door limiting access to the front panels, the door
should have ventilation grilles in it or other provisions should be made to assure a
free flow of air through the front panels of the amplifiers.
Note: Unusually high ambient or operating temperatures may cause the thermal
protection circuitry to open the internal output protection relay. Once the amplifier
has cooled, the relay will automatically close and the amplifier will resume
operation without user intervention.
While the amplifier's 14 gauge front panels are strong enough to support their
entire weight in fixed installations, Alesis strongly recommends using the Matica's
rear rack supports in all installations. Support at the rear is a must for portable and
road use.
Matica amplifiers are well shielded; however, mounting low level electronics some
distance away from power amplifiers is common practice to reduce the possibility
of electromagnetic interference into the low level units, which may sometimes be
unusually susceptible to picking up such radiation.
