http://www.pioneerelectronics.com/pna/v3/p...3_35804,00.html

Currently I'm using an audio control 6XS Active crossover that puts out up to 9volt rms rca signals (my HU puts out 6volt rms) i wonder how low the deq is. Who has brought out a 4 way active crossover (i want to run Tweeters, midrangs, woofers and sub (sub can be off the HU sub out though) with high pass low pass band filters for each driver.
Pioneer DEQ-9200 Universal Add-on Digital Signal Processor
Overview:
Now, THIS is fine tuning. The DEQ-9200 DSP audio processor is a powerful tool for customizing how you want music to sound in your vehicle. It features a DSP audio processor with Auto EQ for a huge variety of sound preferences, and Legato Link conversion for the purest sound possible. A multi-color EL display, extra-capacity battery, and detachable face security (with case provided) are additional features.
Features:
* Equalizer: 3-Band Parametric
* Presets: 6 (Flat/Rock/Pop/Vocal/Hip Hop)
* User Presets: 4
* Nuance Control: Yes
* Frequency Adjustment: (31.5/50/80/125/200/315/500/800/1.3K/2k/3.2k/5k/8k/12.5k/20kHz) Gain: +/- 12dB
* Space Controller/Display: With compact hide-away sub-chassis for easy installation
* Auto EQ: Auto Frequency Response Calibration System 3 Curves Available (Dynamic/Natural/Mild) Omni-Directional Microphone (Included)
* D/A Convertor: 1 -Bit Legato Link
* Electronic Controls: Volume/Balance/Dual Amp Balancer (Fader)
* Remote Control Ready: Yes
* Multicolor Display: With EL Backlighting
* DSP Memory: 3-Day
* RCA Input: Yes
* RCA Outputs: x3 Pair (Front/Rear & Subwoofer)
* Detachable Face Security: With Carry Case
* Operation Modes: 2 Selectable Modes (DSP/PRO)
* Dimensions (WxHxD): 7 3/8" x 2 1/4" x 1 1/4"
DSP Mode (Sound Field Prioriy) Features:
* Subwoofer LPF: 50/63/80/100/125/160/200Hz, Level -24 to +6dB, Slope -18/-12-6dB
* Listening Position Selector: (4-Mode: Front Left/Front Right/Front/All)
* Front and Rear HPF: 50/80/125/200Hz, Level -24 to OdB, Slope -12/-6/OdB
* 5 - Mode Digital Sound Field Control (SFC): (Studio, Jazz Club, Concert, Club, Stadium)
* Phase Switch: For Subwoofer
Pro Mode (Digital Network Priority) Features:
* Time Alignment: (0-160", 0.5" Steps)
* Listening Position Selector: (4-Mode: Front Left/Front Right/Front/All)
* High HPF: 2.5k/3.15k/4k/5k/6.3k/8k/10kHz, Level -24 to OdB, Slope -18/-12/-6dB
* Mid LPF: 2.5k/3.15k/4k/5k/6.3k/8k/10kHz
* Mid HPF: 40/50/63/80/125/160Hz, Level -24 to 0dB, Slope -18/-12/-6dB
* Low LPF: 40/50/63/80/125/160Hz, Level -24 to +6dB, Slope -18/-12/-6dB
* Phase Switch: For High/Mid/Low