Rockford Fosgate AF/2HD Installation Manual

TABLE
OF CONTENTS
Introduction
.........................................................................................................................................................
1
Input and Output Levels .....................................................................................................................................
Power Wiring Instructions
...................................................................................................................................
Fuse Protection ..................................................................................................................................................
Figure 1 Illustration View ...................................................................................................................................
Frequency Selection
...........................................................................................................................................
Band Selection ...................................................................................................................................................
Figure 2 Illustration View
....................................................................................................................................
Switching Examples
...........................................................................................................................................
Active vs. Passive Crossovers
...........................................................................................................................
Choosing Crossover Frequencies ......................................................................................................................
Specifications .....................................................................................................................................................
Warranty Information
.......................................................................................................................................... 10
Make your t*
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Installation accessones from g*
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a division
of
Rockford
Corporation. Ask your sales
representative
about Perfect Power alternators, power cables, speaker
wire,
connectors, cosmetic accessories and fabric.
PRACTICE SAFE SOUND™
CONTINUOUS EXPOSURE TO SOUND PRESSURE LEVELS OVER 1 00dB MAY CAUSE PERMANENT
HEARING LOSS. HIGH-POWERED AUTOSOUND SYSTEMS MAY PRODUCE SOUND PRESSURE LEVELS WELL OVER
130dB.
USE COMMON SENSE AND PRACTICE SAFE SOUND
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
high­pass 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.
CONCEALED MOUNTING 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
1
.
INTRODUCTION
The
INPUT AND OUTPUT LEVELS
The AF/2HD is designed for preamp-level (750
mVRMS)
levels. Speaker-level inputs must be
attenuated to under 1.O VRMS.
/
Net gain in the filter
passband
of the
AF/2HD
is unity. (Output levels are equal to input levels)
POWER WIRING INSTRUCTIONS
1
The Black 16-gauge wire should be grounded to the chassis. The White
16-gauge
wire should be
connected to a source of constant +12-Volt power. The Red
16-gauge
wire is the trigger or turn-on wire. Connect it to the source unit’s “Accessory” or “Auto-Antenna” lead, or to some other point that has 12V “positive” when the system turns on. See Figure 1.
PROTECTION FUSE
The AFMHD has a built-in main power fuse for over current protection. If blown, replace with
AGC
1/2
amp fast blow fuse. See Figure 1 for fuse location.
AF/2HD WIRING/FUSE/MODULE AND JUMPER LOCATIONS
Switches For Number
Of Inputs And A Summing Channel
I
Modules For Band
And Frequency\Situation
Inputs
-
outputs
Circuit Hybrids
Fuse
½
Amp
Fast Blow
_
Power Led
Ground
Auto Power
Mounting Holes &
Locations
FIGURE
1
2
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