Krell Industries MASTER REFERENCE SUBWOOFER - Manual (Page 10)

(SECTION ONE: About Krell continued)
Revolutionary Krell CAST Technology
The Master Reference Subwoofer is designed with Current Audio Signal Transmission
circuit technology, termed CAST. This circuitry is a revolutionary method of connect-
ing analog audio components for unparalleled sonic performance. The innovative
use of the new Krell CAST in combination with existing Krell Current Mode technology
enables you to create entire CAST systems that reproduce music with incredible
range, tonality, and precision.
The Traditional Audio System and Voltage Signal Transmission
Signal is transmitted in the voltage domain between two components in a traditional
audio system. Each component is a discrete entity displaying unique characteristics
that affect the musical signal independently. Each component is unaware of the other
components in the system. The cables that connect the components also have
their own electrical characteristics that affect the sonic presentation of the audio
system.
A New Approach: Current Audio Signal Transmission
CAST circuitry recognizes signal transmitted between each component in the cur-
rent domain instead of the voltage domain. CAST transmission unifies individual
components and their interconnects into an electrically linked whole. The sonic
presentation of the entire system remains intact.
The Basics of CAST
Here’s how a CAST audio system works with the Master Reference Subwoofer.
Each CAST source amplifies current internally, using Krell Current Mode circuitry.
CAST circuitry then outputs this current signal. When the signal is received by a
CAST input on a Master Reference Subwoofer, Krell Current Mode circuitry again
manages the signal until the signal reaches the loudspeaker. An entire CAST system
behaves as if it is one component because it maintains the musical signal in the
current domain from beginning to end. Anomalies of signal transmission between
components are eliminated. Cable impedances and their effects on the transmitted
signal are non-existent.
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