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CSX12 Mark II

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Product Description

12" Home Theater Subwoofer

Cabinet Specifications:
• Hand Polished Gloss Black Piano Finish Front Baffle
• ¾” High Density MDF Fiber Construction
• Bonded and Braced at All Critical Joints, Engineered to Dampen and Eliminate All Vibration for Transparent and Accurate Bass Reproduction
• Front Firing Subwoofer with “Computer Tuned Bass-Reflex Port System”
• Black Wood Gain Cabinet Finish with Spiked Footings and Floor Protection Casters

Subwoofer Specifications:
• High Power 12” Subwoofer
• 2” Four-Layer DuPont Kapton Voice Coil Former
• 90 oz Heavy Duty Magnet Motor Structure
• Extended Pole Piece Technology
• Vented and Extended Magnet Back Plate
• Double Laminated Surround and Dual Spider Suspension System
• Cabinet / Woofer Frequency Response: 25 – 250Hz

Amplifier Specifications:
• Built-in Linear Class A 450 Watt Dynamic Power Amplifier
• RMS Amplifier Power: 225 Watts @
• Subwoofer Multi-Link with Master / Slave Control for Subwoofer Daisy Chaining
• High Current Output Stage Utilizing 6 Ring Emitter Technology Sanken Studio Grade Japanese Transistors
• Lowest Mains Buzz of Any Subwoofer on the Market, Guaranteed!
• High Damping Factor: >400 @ 80Hz for Superior Subwoofer Control
• 33K Ohm Input Impedance which Prevents Input Signal Loss and Ensures Distortion Free Signal Transfer
• High Grade, Minimal Loss, Tiffany Style Low Level RCA Input Jacks
• Auto Start Turn-On / Turn-Off with Audio Signal 1mV Sensitivity
• Fully Adjustable Phase Control 0° - 180°
• Fully Adjustable Low Pass Subwoofer Crossover Frequency Control: 40Hz – 120Hz @ 12dB per Octave
• Fully Adjustable Bass Boost Equalizer 0dB to +12dB @ 50Hz
• Independent Sub Bass Volume Control
• Crossover Bypass Switch for Full Range Unit Operation Option with External Crossover
• Slew Rate 80 Volts per uS in Full Range
• Amplifier Frequency Response: 10 – 120Hz +/-3dB LP (10Hz – 500Hz Bypass)
• Signal / Noise Ratio: >110dB+
• LED Power On Indicator
• 110 / 220 Voltage Selector
• Cabinet Size (W x D x H): 17.75” x 18.25” x 20” (450 x 460 x 510mm)
• Unit Weight: 67.25 lbs / 30.5 kg
• 2 Year Warranty


"The CSX-12 Mark II is the first $400 sub I’ve heard that gave me the “thrill ride” effect I like to experience when I watch action movies. It gives home theater fanatics that gut punch they crave, and it gives audiophiles the definition and precision they want."

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Product Reviews

  1. Best overall sub for music and HT w/o breaking the bank

    Posted by espanarules on 9th Feb 2014

    I was pleasantly surprised after hooking this up. Because of it's weight (over 70 lbs.) I thought that it might perform like the BIC PL-200. It plays and blends well with my 7.1 system.
    Many people think you can't buy a musical sub under $600...they must not have tried this sub...or they only read specs from reviews on audiophile chat rooms...lol. It plays everything from dub to Jazz, techno, metal etc.

    I haven't noticed anything wrong yet for HT...I have not had any muffling from overpowering bass.
    Buy This!!!!

  2. Amazing bass for such a good price!

    Posted by Sam on 28th Jan 2013

    Amazing subwoofer! Can shake the whole room if needed and low enuff for the regular stuff. Amazing product, highly recommended.

  3. Great price, even better sound.

    Posted by Richard D. on 6th Sep 2011

    I was in the market looking for a sub for a little over 3-6months. I did lots of research, looking through countless forums and even visiting a few shops. I finally settled on the CSX12 Mark II. Simply put, it plays loud & low with absolutely no signs of stress. My wife loves the way it looks, the piano black finish adds a classy feel to it and helps blend with my living room nicely. It has brought a whole new life to my movie viewing experience. Avatar, Tron, 300, Fifth Element, Transformers and much more movies all seem to have come to life. Its like we are looking at them for the first time. The best part is I didn’t have to pay for shipping. This was surprising because this thing is heavy. The enclosure is clearly built well. For the money, and given performance, I think I made a great choice.


    Posted by Mike on 6th Sep 2011

    This thing rocks!! My basement is basically my man-cave. We are always watching movies or listening to music while playing pool. Either way the stereo system is always on. I just wanted something to fill my basement with BASS and not have to worry about “setting it up right.” Right out the box, it sounded great. It even looks nice too. I listen to everything from Classic rock to trance and hip-hop, and I have yet to find a song that this sub couldn’t handle. Definitely a good buy!

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