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◆ MOSFET Devices
Rockford Fosgate is one of the few manufacturers in the sound
community to utilize MOSFET devices in both the
power supply
and
the
output stages
.
MOSFET
(Metal Oxide Semiconductor Field Effect
Transistor) devices offer several important inherent advantages over
the 30 year old technology of bi-polar design. These advantages
include: thermal stability, switching speed, ultra low output imped-
ance and wider bandwidth linearity. In addition, MOSFETs operate
very similarly to vacuum tubes in which they are more linear than bi-
polar transistors. However, MOSFETs can deliver the midrange clarity
without the limitations of transient response and high frequency
phase shifting normally associated with tube operation.
THE RESULT: Operational characteristics similar to vacuum tubes
without the performance limitations of tube design.
◆ NOMAD (NOn-Multiplying Advanced Decision)
The Punch amplifiers use an
analog computer process
to maximize
safe output power under all operating conditions. The innovative
NOMAD
(NOn-Multiplying Advanced Decision) system is the most
sophisticated version of this technique ever used, bringing previously
unavailable levels of accuracy, stability, temperature immunity and
reliability to this critical process. NOMAD makes advanced deci-
sions based on device voltages to precisely control the awesome
levels of current available in the output MOSFETs to safe values – but
only when absolutely needed.
THE RESULT: Extremely fast protection system that always protects
the amplifier and never degrades the sound.
– 4 –
◆ Signal Switching Network
The Signal Switching Network allows the RCA input signals to be
distributed to the amplifier channels in multiple configurations.
Among the many possible configurations, a setting called
E-Z bridge
uses a single RCA (L mono) and gain (L) control to feed a pair of
channels, thus simplifying the bridging process.
THE RESULT: Allows input signals to be distributed to amplifier
channels in many different configurations.