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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 impedance and wider bandwidth linearity. In addition,
MOSFETs operate very similarly to vacuum tubes in that 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 decisions 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 –
◆ Punch EQ
The Punch EQ helps correct for acoustical deficiencies in the listening
environment. Two unique potentiometers that control bass and treble
compensate for the response errors present in most car environments. Unlike
conventional tone controls, Punch EQ corrects the specific problems of poor
low bass response and high frequency rolloff.
THE RESULT: Full range sound without excessive boost in areas where it is
not needed.