PRINCIPLE OF OPERATION
O W N E R S M A N U A L
Decware / High Fidelity Engineering Co. East Peoria IL USA
www.decware.com
The varying current entering the FRX motor
from your amplifier creates a varying magnetic
flux in an air gaped grain-oriented silicon steel
laminated core via a primary coil winding and
thus a magnetic field through a secondary
winding is developed.
This varying magnetic
field induces a varying electromotive force
(EMF) in the secondary winding called mutual
induction. Once this secondary winding is
properly tuned with a resistive load, AC
current is allowed to flow through this air-
gaped circuit via the primary and out to the
voice coil.
Since the EMF at a given flux
density increases with frequency, the
secondary (tuning coil) absorbs the artificial
rise in response and ringing caused by the
high strength motor assemblies used in this
type of low mass driver.
Despite
appearances, when the tuning load is
removed no current can flow to the voice coil.
This exotic approach to magnetically coupling
current from the amplifier to the voice coil is
what gives the FRX it's uniquely smooth and
highly present sound.
This approach works by designing a driver
that is over the top in high frequency
projection and then offsetting it with
electromotive force.
The result is smooth
linear response without loosing the hyper
speed and insane detail that comes from the
overly strong neo magnet.
The FRX design also brings significant if not
profound improvements to the overall phase
angle and sense of timing and pace when
compared to normal drivers. I believe it is part
of what brings absolutely lucid imaging to the
table when a pair of these are used with good
tube amplification
