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CHAKRA amplifier technology
All AKURATE power amplifiers feature Linn’s proprietary
CHAKRA technology.
The CHAKRA topology uses an array of large bi-polar
transistors as 'boosters' around a monolithic (single
chip) amplifier IC (integrate circuit). Linn's execution of
the monolithic to bi-polar transition is unique, and a patent application
for the design has been registered. When output current is less than a
few amps, all the power output comes from the monolithic IC,
maximising the speed and linear properties of this design. At higher
output currents the bi-polar transistors provide the majority of the
output current, leaving the monolithic to operate well within its
capability and able to correct any error instantaneously.
The topology is very compact, reducing the circuit area and length of
the signal path and is also highly efficient, producing much less heat
than traditional designs.
Switch Mode Power Supply
A Switch Mode Power Supply (SMPS) is incorporated into all
AKURATE power amplifiers. SMPS is an electronic power supply
which converts and regulates the incoming mains voltage, and also
provides the internal audio circuitry with excellent electrical isolation
from the outside world. The SMPS replaces the bulky, heavy and
noisy transformer and components normally found in convertional
amplifiers.
The major benefits of SMPS over conventional power supplies
include: small size, high efficiency, fast response, high mains input
tolerance, good load tolerance, low acoustic noise and, with its much
reduced material use, environmental friendliness.
Also, SMPS does not emit distortion into the local mains supply, as
conventional large power supplies tend to do and if you upgrade from
an amplifier with a conventional power supply to the AKURATE
amplifier, aside from the benefits of the improved amplification, the
sound of your entire system will almost certainly improve as a result
of the cleaner mains supply.
AKTIV* operation
All AKURATE power amplifiers support AKTIV operation.
Standard 'passive' crossovers are driven by the audio signal itself and
so some of the signal is effectively lost. AKTIV crossovers are
powered by the SMPS (see opposite) and therefore much more of the
audio signal is delivered to the loudspeaker. They are also able to
exert a much greater degree of control over the signal and these
qualities combine to provide a significant improvement in sonic
performance over standard operation.
Your authorised Linn retailer can carry out the AKTIV conversion of
any AKURATE amplifier channel with the insertion of a specially
designed Linn AKTIV module.
Protection
Over-current protection
If the output current goes above the amplifier's designated safe
operating level, the affected channels shut down instantly for a few
seconds in order to protect themselves and the loudspeaker drive
units to which they are connected.
Over-temperature protection
Similarly, if the amplifier's temperature rises above its safe operating
limit, the affected channels will cease operation until the temperature
drops to a safe level and will then automatically resume.
* The term 'AKTIV' refers to the proprietary Linn active modules and
loudspeaker configuration.
ENGLISH
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