Rockford Fosgate AF/2HD is an active electronic crossoverthat incorporates HD (Hybrid Design)
to provide state-of-the-art flexibility, performance and pleasing aesthetics. Its features include: two
stereo inputs for true fading capability, infinitely adjustable frequency modules, user definable high-
pass or low-pass filters, channel summing for mono applications, fully isolated high voltage power
supply, low noise circuitry, low distortion, high-load driving capacity 750 mV RMS input level, 750 mV
RMS output level.
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FADING CAPABILITY
The AF/2HD can be configured for fading and non-fading installations.
LEFT AND RIGHT CHANNELS CAN BE SUMMED FOR MONO APPLICATIONS
Left and right channels can be summed to obtain one summed output for mono applications.
USER SELECTABLE FILTERS (HIGH PASS OR LOW PASS)
A wide range of hybrid modules allows the designer to select high or low pass filter to fulfill
sonic pleasures.
GOLD PLATED RCA’S
This provides the most accurate signal transmission and the lowest possible loss. Gold plated
terminals are immune to signal deterioration with time that can be caused by corrosion in
the connectors.
INTERNAL FUSE FOR PROTECTION
The AF/2HD has a built-in 1/2 amp fuse for protection from excessive current drives.
C O N C E A L E D M O U N T I N G
The AF/2HD’s concise cabinet gives the installer the option of concealing the unit anywhere in
the automobile without worrying about heat dissipation.
AUDIO CIRCUIT IS HYBRID DESIGNED
The new AF/2HD incorporates hybrid circuitry which carries different surface-mount compo-
nents that are laser trimmed to exacting tolerance.
LOW DISTORTION
Such hybridization leaves more area on the “mother” circuit board for traces which provide
zero signal loss and reduces crosstalk and distortion.
WIDE RANGE OF FREQUENCY MODULES, OR FASHION YOUR OWN
Rockford Fosgate provides the information about the operating range of their drives so that
you can choose a crossover frequency within that range to obtain maximum performance.
SMALL, LOW COST
The miniature hybrid chips eliminate space on the PC board and help reduce the cost which is
passed on to the customer.
HIGH LOAD DRIVING CAPACITY: CAPABLE OF HANDLING UP TO 10
ROCKFORD FOSGATE AMPLIFIERS
The AF/2HD active crossover uses 2 hybrid modules for active gain stages which makes it
capable of handling up to 10 Rockford Fosgate amplifiers.
12dB/OCTAVE CROSSOVER SLOPES
Single component passive crossovers provide 6dB per octave rolloff. But the AF/2HD inte-
grates complex active circuitry to achieve a 12dB per octave rolloff.
CASCADING OF OUTPUT TO INPUT PROVIDES 24dB/OCTAVE SLOPE
OR 12dB PER OCTAVE BANDPASS FILTER
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INTRODUCTION
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