2023 · power routing
Truck Audio System
One amplifier, two zones. Phase 1; foundational 5-channel amplifier install with 10-inch subwoofer. Phase 2; upgraded door speakers now wired through the amp, sound deadening foam, and tuning with osciliscope. Phase 3; removable roof-box enclosure for bed audio implementing a 4-channel relay and a custom wiring harness.
Wiring Schematic
Hardware
- System Architecture & Design: Designed and installed a premium automotive audio system featuring a 5-channel class D amplifier, a 10-inch subwoofer, and an innovative cab-to-bed powered relay system.
- Signal Integrity & Tuning: Calibrated speaker gains and crossovers using an oscilloscope to maximize RMS performance and prevent clipping. Routed 46 feet of premium 14-gauge twisted-pair wire to cab speakers, rejecting EMI and maximizing sound fidelity.
- 3D Modeling & Fabrication: Designed and 3D-printed custom relay mounts, protective covers, and discrete aviation-style audio terminals using high-temperature, UV-resistant ASA filament.
- Relay Logic & External Integration: Integrated a 4-channel, 10-amp switchable relay network to seamlessly redirect power from internal speakers to a custom quad-speaker truck bed enclosure.
- Custom Wiring & Terminations: Configured a 16-wire pre-braided cable by pairing 18-gauge strands to create a low-resistance 8-channel, 15-gauge configuration. Integrated dual 4-pin aviation sockets separated by polarity to create a fail-safe, reversible bed port connection.
Build Photos
Relay Module and Enclosures
4-channel relay module enclosure lid.
Pre-fabricated 4-channel relay module.
4-channel relay module enclosure mount.
Bed audio port chassis.