Overview: The F-Mod (filter module) is an active crossover simulator,
made by Harrison Laboratory, that connects in-line with your RCA patch cords.
They require no power, and can be combined with other types of crossovers to
change the slope and crossover frequency point. F-Mods have virtually no noise
or distortion, and do not cause turn-on thumps. F-Mods can handle a maximum
signal of 10 volts RMS, and have a slope of 12dB per octave.
Construction: The F-Mod is made of brass with 24 kt gold plating.
Color Codes: The manufacturer's label is silkscreened on the barrel of
the device in two colors. A red label indicates a high pass filter, while black
indicates a low pass filter. A colored ring near the male RCA end of the barrel
indicates the frequency of the filter (-3dB). There is a frequency increase at
10K ohms (8% Low-pass, 25% High-pass) and a frequency decrease (8% Low-pass, 15%
High Pass) at a 47K ohm load. A high-pass F-Mod and a low-pass F-Mod can be
combined for bandpass operation.
Frequency Codes: The available F-Mods frequencies are:
||Frequency (Low Pass)
||Frequency (High Pass)
Our Product Research Team
At Crutchfield, you'll get detailed, accurate information that's hard to
find elsewhere. That's because we have our own in-house Product Research
team. They verify what’s in the box, check the owner's manual, and record
dimensions, features and specs. We stay on top of new products and technologies
to help people make informed choices.