Lexicon 212 Manuel D’Utilisation
3
Lexicon NT Series Amplifiers
Model 412
The 412 power amplifier consists of 4 independent amplifier modules, each with
its own +55V power supply, and 4 custom power transistors for a total of 16
output devices. The 412 can be configured to drive 2, 3 or 4 speakers: 4 channels
at 120 watts into 8
its own +55V power supply, and 4 custom power transistors for a total of 16
output devices. The 412 can be configured to drive 2, 3 or 4 speakers: 4 channels
at 120 watts into 8
Ω
, or 2 channels at 120 watts plus 1 channel at 400 watts, or 2
channels at 400 watts. This provides complete flexibility in any present or future
audio or video system.
audio or video system.
With 4 discrete channels available, the 412 is an excellent choice to bi-amplify
your audio or video system, either actively using an electronic crossover, or
passively, using independent connectors for the high and low frequency
drivers.
your audio or video system, either actively using an electronic crossover, or
passively, using independent connectors for the high and low frequency
drivers.
The 501 power amplifier consists of 2 amplifier modules, each with its own +60V
power supply and 8 custom power transistors, for a total of 16, or 32 per stereo
pair. The 2 modules can be configured in either Series or Parallel* mode to form
a single mono power amplifier capable of up to 800 watts. The Series mode
connects the modules in a bridged configuration. The output voltage swing is
thus additive, and is appropriate for driving loads from 3-8
power supply and 8 custom power transistors, for a total of 16, or 32 per stereo
pair. The 2 modules can be configured in either Series or Parallel* mode to form
a single mono power amplifier capable of up to 800 watts. The Series mode
connects the modules in a bridged configuration. The output voltage swing is
thus additive, and is appropriate for driving loads from 3-8
Ω
. Parallel mode
yields the voltage swing of a single amplifier module, but the current available
is additive, and is appropriate for driving loads from 1-3
is additive, and is appropriate for driving loads from 1-3
Ω
.
* As the impedance ranges describe
nominal, not minimum, impedance, it is almost never advisable
to use Parallel mode for direct connection to a speaker. Parallel mode is generally only useful when
abnormally low impedances (1
abnormally low impedances (1
Ω
or less) are created from parallel wiring of multiple speakers.
Model 501