Krell Industries MASTER REFERENCE SUBWOOFER - Manual (Page 18)

(SECTION ONE: About Krell continued)
12
Current Audio Signal Transmission (CAST) is a proprietary Krell
circuit technology for connecting analog components, in which
the audio waveform is transmitted between components in the
current rather than the voltage domain. The speed and band-
width that CAST provides yield astounding levels of accuracy
and realism. Krell components connected via CAST perform as
if they are all part of a single circuit.
LFE enriches the low end of a musical score and enhances
nearly subsonic content, such as explosions or other special
effects. It is part of the Dolby 5.1 specification, with a bandwidth
of 5 to 120 Hz.
A two-wire input or output circuit in which the ground connection
is made last and broken first. Use care when using single-ended
connections. Turn the system off prior to making or breaking
single-ended connections. Single-ended connections are not
recommended for configurations requiring long cable runs.
Operation
When the power switch on the rear panel is placed in the down
position and the red stand-by LED turns off, the component is off.
When the power button on the front panel is pressed and the
blue power LED illuminates, the component is in the opera-
tional mode and ready to play music.
A low power consumption status that keeps the audio and reg-
ulator circuits at idle. Krell recommends leaving the component
in the stand-by mode when it is not playing music.
Technology
A proprietary Krell circuit designed to continuously compare the
position of a loudspeaker to the analog waveform at the amplifier
input. Active Motion Control provides an extra measure of
loudspeaker control without the transient distortion associated
with simple servo designs.
(Definition of Terms continued)
Krell CAST
Low Frequency Effect
(LFE) Input
Single-ended
Off
Operational Mode
Stand-by Mode
Krell Active Motion
Control