Rockford Fosgate 50.1 - Manual (Page 6)

– 3 –
◆ DSM
(Discrete Surface Mount Technology)
The DSM (Discrete Surface Mount) manufacturing process combines the advantages of both discrete components and
integrated circuitry. Rockford Fosgate is the only American amplifier manufacturer to have invested millions into this process.
DSM components differ from conventional discrete components in different ways. They are more compact, more rugged,
and they efficiently dissipate generated heat. Using them wherever appropriate allows the advantages associated with discrete
circuitry to be retained while also providing room for both highly advanced processing features and generous PC board
copper paths where needed. Their short lead-out structures allow maximum audio performance and highest signal-to-noise
ratios to be obtained in amplifiers of desirable package size without resorting to “amplifier-on-a-chip” shortcuts. These
advantages are shown below in Figure 1.
Figure 1
Thru-Hole Surface Mount
Component
Solder Solder
PC Board
PC Board
THE RESULT: Less connections, improved reliability, shorter signal paths, superior signal-to-noise ratio and awesome sonic
performance.
◆ XCard
(Internal Crossover)
The Power amplifiers utilize internal active crossovers. These crossovers have many performance advantages such as using
discrete components for exact frequency adjustments which are far superior to potentiometers. Additionally, the XCard can
be configured for high-pass, low-pass and full range operation. With slight modification, many crossover frequencies and
slope configurations can be achieved.
THE RESULT: Increased system design flexibility with a precise electronic crossover without the limitations of conventional
potentiometer designs.
◆ Stereo Pass-Thru
The Pass-Thru output provides a convenient source for daisy-chaining an additional amplifier without the need for extra RCA
cables or “Y” adapters. The 50. 1 Pass-Thru provides constant Full Range stereo output. The 50. 2 has the ability to provide
constant Full Range stereo output as well as distribute one of its internal XCards to the Pass-Thru for a dedicated High-Pass
or Low-Pass output.
THE RESULT: Convenient signal level output for adding extra amplifiers.