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Operation Manual
Macro-Tech MA-24X6 & 36X12 Power Amplifiers
page 12
3.2 Front Panel Controls
and Indicators
A. Dust Filter
Removes large particles from the air at the
air intake. The filter elements can be easily
removed for cleaning by gently pulling
them away from the front panel.
B. Level Control
Rotary detented level control, one per
channel.
C. Signal/IOC Indicator
Green LED, one per channel. Dual-pur-
pose indicator illuminates to indicate the
presence of input signals; flashes brightly
with a 0.1-second hold delay to indicate a
difference (distortion) between the input
and output signal of 0.05% or greater; and
flashes brightly with a 0.5-second hold
delay to indicate input clipping distortion.
See Section 4.1.2 for more about IOC.
D. ODEP Indicator
Red LED, one per channel, illuminates
brightly to indicate presence of thermody-
namic energy. They dim proportionally as
energy reserves decrease. In the event that
energy reserves are depleted, the indica-
tors turn off and ODEP limiting occurs.
See Section 4.1 for more about ODEP.
E. Enable Indicator
Green LED indicates amplifier has been
turned on and AC power is available.
F. Enable Switch
Amplifier is on when the switch is in the IN
position.
Figure 3.1 Front Panel
Controls and Indicators
3 Operation