Audio Active Brain
Brain is at the heart of
all Adrenaline systems. The
Active Brain is a fourth-order constant voltage electronic
crossover that provides both low-pass and high-pass outputs.
The slope of each output is 24dB per octave, and because
of the fourth order design, both outputs are always in
phase with each other. The crossover network is implemented
as a variable-state filter. This filter provides both the
high-pass and the low-pass function simultaneously, guaranteeing
a near-perfect match of the two responses. Over hundreds
of crossover point settings from 50 to 500 Hertz are available.
These settings are set at the factory or by Wisdom Audio
personnel at the time of setup for every individual system.
The crossover is mandatory in that all systems
are bi-amplified and require four channels of amplification.
Two channels of power are needed for the LFR subwoofers.
Two channels of amplification are also needed for the Planar
Wisdom Audio does not use
passive crossovers, which
cause saturation and distortion from the high power from
the amplifiers being distributed to the various drivers,
as in conventional systems. Therefore all crossover work is done at the low pre-amp
level and then distributed to the designated amplifiers for each driver. This
also allows better amp load preference and is the cleanest approach to unadulterated
sound, yielding the highest obtainable performance of the speakers and equipment
“It is easier to divert a trickle of energy, than it is to steer
a river of power.”
The crossover capability of the Active Brain is just
part of its many functions.
The Qts and subsonics of the Low Frequency Regenerators
are controlled by the Active Brain. Over hundreds of low
frequency room and taste tailorments are also available
inside the unit allowing every system to be tailored exactingly
by Wisdom Audio personnel at the factory or on location
during personalized setups for the customer.
thousands of high frequency
tailorments available inside
that allow perfect dialing of each and every planar driver
at the factory as well as providing Wisdom Audio personnel
the technology to help cure undesirable acoustic situations
that might be encountered during setup at each individual
The controls on the front of the Active Brain,
allow the owner/user to “dial
in” the Adrenaline systems for optimum performance
with virtually any amplifier
combination and room acoustic variations. Once the user
studies and learns how each control should be used, the
Active Brain will not only become easy to use, but will
give the customer an unlimited control tool used to help
cure poor acoustics, equipment mismatches, cable shortcomings,
taste differences, and can also help reconstruct poorly
recorded formats. The customer benefits most by learning
how the controls are used and work during the setup and
tutorial demonstration by Wisdom Audio personnel. We have
condensed the personal tutorial demonstration into a “users
guide” to provide quick and easy-to-use
information of the Active
Brain as well as suggested speaker/room placement guides.