

Sundown Audio SAM-100.4 4-Channel Bluetooth Powersports Amplifier
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Subwoofer Wiring Diagram
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Diagrams are on our wiring diagram page.
- Power — 100W x 4 @ 4Ω, 175W x 4 @ 2Ω, 350W x 2 @ 4Ω bridged
- Class — 4-channel Class D powersports micro amplifier
- Bluetooth — Built-in Bluetooth receiver, no source unit required
- Waterproofing — IP67 rated, certified for full submersion
- Filter — Variable 12dB, 50Hz–500Hz
This Listing Includes: (1) Sundown Audio SAM-100.4 4-Channel Bluetooth Powersports Amplifier
The SAM-100.4 is a 4-channel powersports micro amplifier rated at 100 watts x 4 at 4 ohms, 175 watts x 4 at 2 ohms, and 350 watts x 2 at 4 ohms bridged. It carries a built-in Bluetooth receiver so no source unit is needed — just sync your phone and play — plus a variable 12dB filter from 50Hz to 500Hz and an RCA line out for adding more amplifiers. Rated IP67, it is certified to withstand full submersion for boat, bike, and UTV use, with sealed wire and signal bulkheads and a gasketed audio control cover. Power and protection indicators pair with thermal, voltage, and speaker-short protection circuitry. Authorized Sundown Audio dealer at JS Ultimate Sounds. Free shipping on orders $99+.
Features
- Built-in Bluetooth receiver, no source unit required
- IP67 rated for full submersion
- Sealed wire/signal bulkheads and gasketed control cover
- RCA line out for adding additional amplifiers
- Compact micro chassis for tight installs
Specifications
| Power @ 4Ω | 100W x 4 |
| Power @ 2Ω | 175W x 4 |
| Power @ 4Ω (bridged) | 350W x 2 |
| Filter | Variable 12dB, 50Hz–500Hz |
| Bluetooth | Built-in receiver |
| Waterproof Rating | IP67 |
| Protection | Thermal, voltage, speaker short |


