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AUTOMATED TURN-ON LOGIC (ATO LOGIC)
The C 275BEE may be turned ON in any one of three discrete ways for
complete system flexibility - from the front panel standby button, the
12V-TRIGGER circuit or by the input signal-sensing circuit. The ON/OFF
power control is managed by the Automated Turn-On logic or ATO Logic
circuit that requires the C 275BEE to be switched back to standby mode in
ATO LOGIC CHART
POWER SWITCH
CONDITION
Power ON
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POWER switch : OFF
+12V TRIGGER IN/
INPUT SENSE switch: OFF
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✓
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POWER switch : ON
✓
+12V TRIGGER IN/
INPUT SENSE switch: OFF
✓
✓
✓
✓
✓
POWER switch : ON
✓
+12V TRIGGER IN/
INPUT SENSE switch: AUTO
✓
✓
✓
POWERDRIVE
The C 275BEE uses NAD's proprietary PowerDrive™ amplifier technology
for all channels to preserve accurate, linear reproduction regardless of the
loudspeaker. This uniquely efficient power-supply topology provides the
real-world benefits of high dynamic power that remains uncompromised
by low-impedance speakers.
+12V TRIGGER IN
(using 3.mm mini-jack plug)
Power OFF
+12V
0V
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IDENTIFICATION OF CONTROLS
the same manner by which it was activated. In other words, if the C 275BEE
is switched ON via a +12V-control signal, it cannot be switched to standby
mode via the front panel STANDBY button, it must wait for removal of the
+12V-control signal. In practice, you probably would use only one of the
methods once your C 275BEE is installed.
INPUT SENSE
Mini-jack
Input signal
Input signal
unplugged
>20mV
<20mV
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By adding a second high-voltage rail to our well regulated high-current
power supply, we get an "overdrive" that can nearly double the continuous
power on a short term dynamic power basis. PowerDrive offers greater
amplifier stability and low impedance drive capability, resulting in less
distortion when driving real speakers with real program material.
REAR PANEL
STANDBY BUTTON
Press to enter
Press to turn ON
Standby mode
(blue)
(amber)
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