FOUND THIS ABOUT THE ALPINE REGARDING ITS "ACTIVE" CAPABILITIES. Seems like its active capable.
Here is the link also:
Alpine INE-Z928HD Navigation receiver at Crutchfield.com
High-Pass & Low-Pass Crossovers: This unit is equipped with active high-pass and low-pass crossovers which limit the frequencies delivered to the speaker and line-level outputs. Each speaker channel is controlled independently, so each speaker pair can be driven by the frequencies for which have they been optimally designed. The crossover adjusts the HFP (high pass filter) or LPF (low pass filter) frequency point of each speaker pair, and also the slope (how fast the filter rolls off the highs or lows).
High Pass Filter: The Alpine head unit is equipped with a high-pass filter for its speaker-level output and front/rear-channel preamp outputs. You can set the unit's high-pass filter center frequency point to 20Hz, 25Hz, 31.5Hz, 40Hz, 50Hz, 63Hz, 80Hz, 100Hz, 125Hz, 160Hz, 200Hz, or Off (through). The slope of the high pass filter can be set to 6, 12, 18, or 24 dB/oct.
Low Pass Filter: The unit's subwoofer output low-pass filter can be set to 20Hz, 25Hz, 31.5Hz, 40Hz, 50Hz, 63Hz, 80Hz, 100Hz, 125Hz, 160Hz, 200Hz, or Off (through). The slope of the low pass filter can be set to 6, 12, 18, or 24 dB/oct.
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