D1650/D1651
INSTALLATION MANUAL
ELAN HOME SYSTEMS
© ELAN Home Systems, Inc. 2004 • All rights reserved. 7/04 Page 7
Features
‘Class T’ Design
‘Class T’ allows the D1650 to deliver its full rated
power from all sixteen channels simultaneously and
is 90% efficient so that the amplifier does not waste
energy producing excessive heat.
Dual Stereo Bus
BUS A and BUS B inputs and outputs allow the
amplifier to be configured in dozens of different
ways to meet the demands of large audio distribu-
tion systems. Channels can be assigned to one of
two audio busses in order to be split or combined
according to situational demands.
Audio inputs can be BUS A, BUS B, Independent,
Stereo, or Mono without the use of extraneous
patch cables. Additional amplifiers can be connect-
ed from the Line outputs of the D1650 to provide
greater system expansion.
ACE™ (Automatic Clip Eliminator)
Microprocessor-controlled dynamic leveling circuit
eliminates clipping without audio degradation typical
with traditional compressor-based clipping circuits.
Each amplified output is continuously monitored for
signal clipping. Extremely fast transients are
ignored but if ACE sees a consistent clipping trend,
it turns the respective channel down by one incre-
ment. This action is repeated until no more clipping
is detected. Once clipping is absent for five sec-
onds, ACE will slowly and unnoticeably begin to
restore the original gain settings. This translates into
accurate, high quality audio reproduction at all vol-
ume levels.
Individual Remote Trigger Inputs/
Trigger Output
Eight +12VDC Trigger Inputs allow each pair of
channels to be powered up and muted independent-
ly. The +12VDC Trigger Output turns on and mutes
additional amplifiers.
Signal Presence and Clipping
Indicators
High-visibility blue LED display and front panel
Channel Select and Volume Adjustment controls
make setup easy. Blue Signal LEDS show when
audio is present on each input. Red Clipping LEDS
indicate distortion, and make fine tuning the amplifi-
er very straightforward. Five blue LEDs fire down-
ward to softly indicate Power status. The Signal
Level and Power LEDs feature adjustable bright-
ness.
Digital Volume Level Set/Lockout
All channel volume levels are matched to within
0.3dB, making volume setup easy, accurate, and
repeatable. Volume settings are stored within the
D1650'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 settings
when the system is locked, but is unable to change
them.
Advanced Amplifier Protection
Each channel of the D1650 is coupled to its respec-
tive WECO 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 indicated on the
front panel. After finding and correcting the problem
causing the fault condition, simply power the unit
OFF and back ON to restore operation.
Rack Mount Aluminum Front
Panel w/ Rugged Handles (D1651)
Amplifier mounts securely to equipment racks.
Handles are invaluable when moving, installing,
adjusting or servicing the unit.