Home » Products » Subwoofers » X21P/X21A 21″ Ported Subwoofer (Passive or Amplified)

X21P/X21A 21″ Ported Subwoofer (Passive or Amplified)

$2,295.00 – $4,195.00

The X21 is a large subwoofer using a massive, 21″ woofer and a pair of 6″ diameter flared ports allowing for high efficiency and clean output to fill the largest of rooms or bass appetites.  We offer two options for the 21″ driver where our X21AD & X21PD models utilize a 4.5″ voice coil design, and our X21AI & X21Pi models utilize a massive 6″ split voice coil design for even more power handling, greater headroom, and even lower distortion.  With the durability and efficiency of this system we are happy to allow users to select their own amplification in offering a passive version of the X21 subwoofer with either driver option while we provide recommended DSP filter settings for optimal performance.  We also offer a 1200W ICEpower based amplifier with the X21AD variant and our 4000W amplifier with the X21AI which uses the larger 6″ voice coil woofer.  You can find rather extensive measurements of what we call the X21PD here at Data-Bass.

Flat rate LTL freight shipping within the lower 48 states is $395 for a single, or $650 for a pair.  For those closer than the west coast, please e-mail us with your shipping address for a custom quote and discount codes we can generate for shipping, or we can credit back any available savings after processing your order.  This product is built to order with an expected 3 week lead time.

International customers please e-mail us with your shipping address and the number of units you are ordering so we can get back to you with an accurate quote.
SKU: X21 Category:

Description

X21 Details and Specifications:

Amplifier & Controls (X21AD):

  • Amplifier & Controls:
    • 1200W continuous power amplifier
      • High efficiency B&O ICEpower technology
      • Mated to US designed and assembled DSP.
      • Assembled in the USA
      • Universal 100-240V operation
      • IEC Power Cord (10′ length included) – right angle plug available
    • Connection options
      • XLR Female input (LFE/mono) with looping, XLR Male output (internal Y connection)
      • 2 summed RCA inputs for LFE or Stereo inputs
      • 12V trigger and auto sensing – 3.5mm mini-cable connection
      • LED indicator for power, standby or error codes.
    • Digitally programmable, detented, control knobs for precision adjustment and tuning
      • GAIN (volume) control – wide range for matching any system
      • LF Adjust (low shelf/adjust extension/room sizing) enabling adjustment of low frequency extension from 14Hz to 28Hz or +/- 8dB shelf (see graphs).
      • Low pass crossover filter 30-120Hz + 200Hz, precise, digitally executed, Linkwitz-Riley 4th Order fitlers (24dB/oct)
      • Delay adjustment – 0-20ms for multiple subwoofer blending
    • Proprietary DSP performance optimization
      • Smooth anechoic/outdoor frequency response
      • Carefully optimized, proprietary overload protection – never fear for the well being of your subwoofer while the X21A maintains composure to even higher playback levels than the power rating would suggest
      • Smooth power response to 200Hz for seamless crossover and articulation with compact speakers
      • Shallow initial roll off better compliments most rooms to reduce bloated bass and deliver more high impact attack
      • LF Adjust shelving & room size adjustment allow for a best fit with large to small rooms or adjusting to personal preference after room correction.

     

Driver:

  • X21AD & X21PD:  Standard B&C 21″ subwoofer with 4.5″ voice coil and high strength Neodymium motor (21DS115-4)
    • Triple roll surround for high excursion
    • 4.5″ – 4 layer aluminum voice coil
    • Aluminum demodulation ring to further reduce distortion at high power
    • Ventilated voice coil gap for reduced power compression
    • Double silicone spider with optimized compliance
    • 3400W continuous power handling on the driver
    • 4 Ohm nominal amplifier load
  • X21AI & X21PI:  Premium B&C 21″ subwoofer with 6″ voice coil and high strength Neodymium motor (21IPAL)
    • Triple roll surround for high excursion
    • 6″ split winding aluminum voice coil
    • Aluminum demodulation ring to further reduce distortion at high power
    • Ventilated voice coil gap for reduced power compression
    • Double silicone spider with optimized compliance
    • 5000W continuous power handling on the driver
    • 2 Ohm nominal amplifier load – Low impedance amplifier required

Enclosure:

  • Locally produced with custom-tooled lock mitered construction
    • Pre-veneered shell cut by high precision CNC router
    • Pre-veneered sheet is machined pressed for superior veneer adhesion
    • Lock mitered joints insure perfect alignment, increased joint strength, and sharp veneer edges.
    • CNC cut and located braces enhance strength and precision of the enclosure while controlling panel vibrations
    • Removable feet with M6 hardware allows for optional spikes or a flat bottom – shipped with 3/4″ tall x 1.5″ diameter rubber feet.
    • Selection of available wood species and stain options
  • Magnetically secured grills with no pegs to break or see when the grills are off
  • Dimensions 32.75″ H x 24″ W x 32.75″ D (including feet and magnetically attached grill)
  • Dimension Drawing (PDF coming soon)
  • Weight: 160 lbs (X21A), 154 lbs (X21P)

 

Acoustic Details:

  • Internal 1200W amplification or binding post input for external amplification
  • Anechoic magnitude response:
    • X21A: +/-3dB from 17Hz to 160Hz outdoor response (LF Adjust @ 12 o’clock)
    • X21P with recommended filters: +/-3dB from 17Hz to 160Hz outdoor response (LF Adjust @ 12 o’clock)
    • X21P raw: +/-6dB from 17Hz to 160Hz outdoor response (LF Adjust @ 12 o’clock)
  • 24dB/Octave CROSSOVER selectable from 30-120Hz and Bypass
  • 0-20ms DELAY adjustment for blending front/rear subwoofer sets
  • Typical in-room extension to 14-16Hz

Additional information

Weight 160 lbs
Dimensions 32.75 × 24 × 32.75 in
Driver & Power

X21AD – 4.5" Voice Coil – 1200W Power, X21PD – 4.5" Voice Coil – Passive, X21AI – 6" Voice Coil – 4000W Power, X21PI – 6" Voice Coil – Passive
Cabinet Veneer

Black Maple, Black Oak, Rosenut, Espresso Cherry, Vintage Cherry, Golden Cherry, Clear Maple

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