
American Bass XMAXXX Monster 18" Single Bundle
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Bundle Includes: (1) American Bass Xmaxxx Monster 18" Car Subwoofer 4000 Watts RMS Dual Voice Coil 1 Ohm or 2 Ohm + (1) American Bass XMAXXX Monster 18" Single Ported Subwoofer Enclosure
Priced at 10% off the combined retail price of the subwoofer and enclosure bought separately. Select your impedance below.
American Bass Xmaxxx Monster 18" Car Subwoofer 4000 Watts RMS Dual Voice Coil 1 Ohm or 2 Ohm
- 4000W RMS / 8000W Max — monster output for high-powered 18" builds
- Dual 1Ω or Dual 2Ω — pick the coil for your setup (XMAXXX-1811 / XMAXXX-1822)
- 4.0" 4-layer high-temp coil — handles sustained power with ease
- Triple-stacked high-energy magnet — serious motor force behind every note
- Blue powder-coated basket — oversized fat foam surround and 22.5mm Xmax
American Bass Xmaxxx Monster 18" Car Subwoofer — 4000W RMS Dual Voice Coil (XMAXXX-1811 / XMAXXX-1822)
This Listing Includes:
- (1) American Bass Xmaxxx Monster 18" Subwoofer
The American Bass Xmaxxx Monster 18" is ready to dominate your car audio system. Its blue powder-coated basket and matching blue-stitched surround give the Monster an unmistakable look, while a 4.0" four-layer high-temp voice coil, triple-stacked high-energy magnets, and a carbon-fiber-reinforced cone deliver the true power this sub is famous for. Grab XMAXXX-1811 for dual 1-ohm or XMAXXX-1822 for dual 2-ohm and build the meanest system on the block.
Features
- 4.0" hi-temp 4-layer voice coil
- Triple-stacked high-energy magnet motor
- Blue powder-coated heavy-duty basket
- Carbon-fiber-reinforced non-pressed paper cone with oversized fat foam surround
- Dual voice coil design with 22.5mm Xmax
Specifications
| RMS Power | 4000W |
| Max Power | 8000W |
| Impedance | Dual 1Ω (1811) / Dual 2Ω (1822) |
| Sensitivity | 86.5 dB (1Ω) / 87.2 dB (2Ω) |
| Voice Coil | 4.0", 4-layer high-temp |
| Magnet | Triple-stacked high-energy |
| Basket | Powder-coated heavy-duty steel |
| Mounting Depth | 11.5" |
| Cutout Diameter | 16.8" |
| Xmax | 22.5mm |
| Fs | 31.76 Hz (1Ω) / 32.5 Hz (2Ω) |
| Qts | 0.53 (1Ω) / 0.43 (2Ω) |
| Qes | 0.59 (1Ω) / 0.47 (2Ω) |
| Qms | 5.55 (1Ω) / 6.17 (2Ω) |
| Vas | 53.57 L (1Ω) / 46.98 L (2Ω) |
| BL | 23.95 (1Ω) / 38.12 (2Ω) |
| Mms | 855 g (1Ω) / 929 g (2Ω) |
American Bass XMAXXX Monster 18" Single Ported Subwoofer Enclosure
- Net Volume - 6.0 cu ft
- Tuning - 30.0 Hz
- Port Area - 87.75 sq in
- Sub Cutout - 16.75"
- Construction - 1" (24mm) plywood construction
This Listing Includes: (1) Basshead Supply ported enclosure for the American Bass XMAXXX Monster 18" subwoofer
This enclosure is custom built specifically for the American Bass XMAXXX Monster 18" subwoofer. Basshead Supply's Performance Series enclosures are subwoofer-specific boxes engineered for strong, clean output, built with a refined assembly process that leaves no visible screw holes. Every box is glued with Titebond III and internally braced, then pre-wired with a recessed satin-nickel binding post and OFC 10-gauge wire - built by hand in the USA. Made to order (2-3 week lead time) and shipping from JS Ultimate Sounds, your Basshead Supply dealer.
Features
- 1" (24mm) plywood construction
- 17 ply birch veneer construction
- Gray stained finish
- Refined assembly - no visible screw holes
- Glued with Titebond III and internally braced
- Pre-wired recessed satin-nickel binding post with OFC 10-gauge wire
- Built by hand in the USA
Specifications
| Net Volume | 6.0 cu ft |
| Tuning | 30.0 Hz |
| Port Area | 87.75 sq in |
| Port Dimensions | 18.0" x 4.875" |
| Sub Cutout | 16.75" |
| Construction | 1" (24mm) plywood construction |
| Finish | Gray stained finish |
| Wiring | Pre-wired metal binding post with 10ga OFC wire |
| Dimensions (HxWxD) | 20.0" x 39.625" x 22.625" |


