American Bass King 18" Single Bundle (Baltic Birch)
Many in-stock orders ship within 1-2 business days, but timing varies by item. Custom, built-to-order, oversized, special-order, and supplier-direct products may need extra processing time. Free shipping applies to qualifying orders over $99 within the contiguous US. Freight items may require delivery coordination; any shipping exceptions are shown before checkout. Approved returns may be subject to a restocking fee.
Most products are covered by the manufacturer's warranty against defects. Damage from over-powering or improper installation isn't covered — we'll help coordinate any valid claim.
Tell us your vehicle, subwoofers and electrical setup and our team will help you match the right gear. Reach out before you buy.
How this package ships
- Two separate deliveries. Your subwoofer ships from JS Ultimate Sounds and usually arrives first.
- Separate tracking numbers. You will get one for each delivery, so a tracking link showing only part of your order is normal.
- The enclosure is built to order by Basshead Supply and ships direct from them in about 2 to 3 weeks.
- The subwoofer is not pre-installed. You mount it in the enclosure once both have arrived.
- The enclosure arrives finished in a gray stain, ready to install.
What is included
- (1) American Bass King 18" Car Subwoofer 6500 Watts RMS Dual Voice Coil 1 Ohm or 2 Ohm
- (1) American Bass King 18" Single Ported Subwoofer Enclosure, Baltic Birch
Priced 10% below buying the subwoofer and enclosure separately.
Choose your impedance below.
American Bass King 18" Car Subwoofer 6500 Watts RMS Dual Voice Coil 1 Ohm or 2 Ohm
- 6500W RMS / 15000W Max — the ruler of the lineup for extreme 18" SPL
- Dual 1Ω or Dual 2Ω — choose your coil to suit your amp (KING-1811 / KING-1822)
- 4.5" flat-wire high-temp voice coil — enormous coil for huge power handling
- Triple-stacked 613 oz magnet — commanding motor force for earth-shaking output
- Carbon fiber cone, die-cast basket — 22.5mm Xmax built for durability and dynamics
American Bass King 18" Car Subwoofer — 6500W RMS Dual Voice Coil (KING-1811 / KING-1822)
This Listing Includes:
- (1) American Bass King 18" Subwoofer
All hail the American Bass King 18" — the ruler of the bass world. This monster crowns a gold textured die-cast basket with a carbon fiber cone, a 4.5" high-temperature flat-wire voice coil, and triple-stacked 613 oz magnets for sound that truly commands attention. With a direct cooling system and 4GA copper push terminals, the King reigns supreme. Choose KING-1811 for dual 1-ohm or KING-1822 for dual 2-ohm.
Features
- 4.5" high-temperature flat-wire voice coil
- Triple-stacked 613 oz magnet motor
- Gold textured die-cast basket
- Carbon fiber cone with carbon foam surround and carbon fiber dust cap
- Dual voice coil with direct cooling, double spider and 22.5mm Xmax
Specifications
| RMS Power | 6500W |
| Max Power | 15000W |
| Impedance | Dual 1Ω (1811) / Dual 2Ω (1822) |
| Sensitivity | 86.3 dB |
| Voice Coil | 4.5", 4-layer high-temp flat wire |
| Magnet | 613 oz, triple-stacked |
| Basket | Die-cast aluminum |
| Mounting Depth | 13.19" |
| Cutout Diameter | 16.85" |
| Xmax | 22.5mm |
| Fs | 43.07 Hz |
| Qts | 0.77 |
| Qes | 0.87 |
| Qms | 6.9 |
| Vas | 30.4 L |
| BL | 21.0 |
| Mms | 910 g |
| Sd | 1190 cm² |
| Re | 1.6Ω |
American Bass King 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 King 18" subwoofer
This enclosure is custom built specifically for the American Bass King 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. Custom built to order by Basshead Supply and shipped directly from them, about 2 to 3 weeks.
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" |
