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D400/D401
INSTALLATION MANUAL
Features
'Class-T' Design
'Class-T' Digital Technology allows the D400 to
deliver its full rated power from both channels
simultaneously and is 85% efficient so that the
amplifier does not waste energy producing exces-
sive heat.
ACE™ (Automatic Clip Eliminator)
Microprocessor-controlled dynamic leveling circuit
eliminates clipping without audio degradation typi-
cal with traditional compressor-based clipping cir-
cuits. Each amplified output is continuously moni-
tored for signal clipping. Extremely fast transients
are ignored but if ACE sees a consistent clipping
trend, it turns the respective channel down by one
increment. This action is repeated until no more
clipping is detected. Once clipping is absent for
five seconds, ACE will slowly and unnoticeably
begin to restore the original gain settings. This
translates into accurate, high quality audio repro-
duction at all volume levels.
Vacuum Florescent Display
Blue Signal Presence LEDs show when audio is
present on each input. Red Clipping LEDs indi-
cate distortion, and make fine tuning the amplifier
very straightforward. The Signal Level and Power
LEDs feature adjustable brightness.
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E L A N H O M E S Y S T E M S
Digital Level Set/Lockout
All channel levels are matched to within 0.3dB,
making setup easy, accurate, and repeatable.
Level settings are stored within the D400's non-
volatile memory upon exiting setup. This means
that settings are preserved even when a power
outage occurs.
A special multi-button key press can be used
to lock the volume settings so that they can not
be tampered with. The user may view their set-
tings when the system is locked, but is unable to
change them.
Advanced Amplifier Protection
Each channel of the D400 is coupled to its respec-
tive modular speaker terminal via a high-power
relay. If the processing circuitry senses a fault
condition (over heating, shorted output, etc.), it will
completely disconnect the amplifier channel from
the output load. Faulted conditions will be indicat-
ed on the front panel display. After powering down
and finding and correcting the problem causing the
fault condition, the D400 will resume normal opera-
tion upon power up.
Single Rack Height Design
The D400's single rack height design uses space
very efficiently while still producing an abundance
of power.
© ELAN Home Systems 2005 • All rights reserved.
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