American Bass HD Series 8" Subwoofer Dual 4 Ohm
Key features
- Subwoofer size: 8.0 inches
- RMS power per subwoofer: 400 W
- Voice-coil options: D4
- Mounting depth: 6.3 inches
- Cutout size: 7.2 inches
- Basket construction: Cast
American Bass HD Series 8" Subwoofer Dual 4 Ohm is backordered and will ship as soon as it is back in stock.
American Bass HD Series 8" Subwoofer Dual 4 Ohm is backordered and will ship as soon as it is back in stock.
Description
Description
Product Overview
Add substantial bass from a compact 8-inch driver with the American Bass HD Series 8-inch Dual 4 Ohm subwoofer. It handles 400W RMS and features dual 4-ohm voice coils, a cast basket, and a 135 oz magnet.
Key Features & Benefits
- 400W RMS power handling: Supports sustained bass with a compatible amplifier.
- 800W maximum power: Provides a separate peak-power rating for short-term transients.
- Dual 4-ohm coils: Offer wiring flexibility when planning a system.
- Cast basket: Helps maintain frame alignment during heavy excursion.
- 135 oz magnet: Contributes to cone control and linear excursion under high power.
Technical Specifications
| RMS POWER | 400W |
| MAX POWER | 800W |
| IMPEDANCE (OHMS) | D4 |
| SENSITIVITY DB | 84.6 |
| MOUNTING DEPTH (IN) | 6.14 |
| CUTOUT SIZE (IN) | 7.36 |
| PORTED BOX (FT3) | 1 - 1.25 |
| MAGNET SIZE (OZ) | 135 |
| VOICE COIL SIZE | 2.5 |
| BASKET TYPE | CAST |
| RECOMMENDED AMP (PAIR) | VFL 1K / VFL 4800.1 |
Why Choose This Product?
The HD Series combines an 8-inch size with a substantial RMS rating for a compact car-audio subwoofer setup. Its dual 4-ohm coils give you flexibility when planning the system, while the cast basket and large magnet support mechanical stability during demanding bass playback.
Installation & Compatibility Notes
Allow for a 6.14-inch mounting depth and a 7.36-inch cutout. The recommended ported enclosure volume is 1–1.25 ft³ per subwoofer. Check your available space and system design before installation.
For a pair of subwoofers, the recommended amplifiers are VFL 1K or VFL 4800.1. Confirm amplifier and wiring compatibility with your planned system.
Frequently Asked Questions
What is the difference between the RMS and maximum power ratings?
The subwoofer is rated for 400W RMS and 800W maximum power. RMS is the continuous power rating; maximum power is the peak rating.
What enclosure volume is recommended?
Use a ported enclosure with a volume of 1–1.25 ft³ per subwoofer.
Which amplifiers are recommended for a pair?
The listed recommendations are VFL 1K and VFL 4800.1 for a pair of subwoofers.
What mounting space should I allow?
Plan for a 6.14-inch mounting depth and a 7.36-inch cutout diameter.
Explore More
Shop the American Bass HD Series at 12 Volt Outlet. Want to learn more about American Bass? Explore our American Bass brand profile.
Recommended Monoblock Amplifiers
Power-matched options for one subwoofer or one complete loaded enclosure. We aim to include same-brand choices when their ratings qualify.
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Suggestions use 75–125% of the subwoofer’s RMS rating at the wiring load shown. Check wiring, enclosure needs, electrical capacity and installation space. Set gain and filters correctly to avoid overpowering the subwoofer. Buying more than one subwoofer changes the match.



