Martin Audio – MA900 Amplifier
E
NGLISH
8
6
INSTALLATION
6.1
Mounting
The amplifier is two rack unit's high (2U) and weighs 15Kg (33lbs) and will mount in a standard EIA 19” rack.
Amplifiers may be stacked directly on top of each other. There is no need for spacing between units. If it is the
intention to fill a rack with amplifiers, we recommend racking is started from the bottom of the rack. It is also
recommended that rear supports are used for amplifiers mounted in the middle of the rack, especially if used as
part of a portable system.
6.2
Cooling
Your amplifier uses a forced air cooling system to maintain a low and even operating temperature. All fan cooled
MARTIN AUDIO MA Series amplifiers have front to rear cooling. Never try to reverse the airflow, as the amplifier
needs a pressure chamber between the fans and heat sink, and this only operates in one direction of the airflow.
Make sure that there is an adequate air supply in front of the amplifier, and that the rear of the amplifier has
sufficient space to allow the exhaust to escape. If the amplifier is rack-mounted, do not use covers or doors on the
front or rear of the rack. Should a heat sink get too hot, its sensing circuit will mute the hot channel. If the power
supply overheats, another sensing circuit will mute all output channels, until it cools down to a safe operating
temperature.
For installations with a central cooling system, usually found in fixed installations with a dedicated rack room, it may
be necessary to calculate the maximum heat emission. Refer to Power consumption on page
9
. Remember! Never
rack different makes of amplifiers together that have opposing air flow characteristics.
6.3
Operating voltage
WARNING!
A label just below the mains cable on the rear of the amplifier indicates the selected AC mains operating voltage.
Connect the mains cable only to the AC source referred to on the label. The warranty will not cover damage
caused by connecting to the wrong type of AC mains.
If th e p ow er plug is n ot ap prop ria te fo r yo u r co u ntry, it ca n b e cu t o ff an d re - w ire d to a su ita ble co n ne cto r in th e
follo win g wa y:
B LA CK o r B RO W N
L IV E
W HITE o r B LU E
N EU TR AL
G RE EN o r G RE E N/YE LL O W
E AR TH
All material © 2007. Martin Audio Ltd. Subject to change without notice.
