Dongfeng KL truck parts Speaker assembly 3775020-C3300

Equipped with a full-range driver and optimized frequency response, the speaker delivers clear, balanced audio tailored to the unique acoustic challenges of truck cabs (echo, road noise, confined space). It features a frequency range of 80Hz–20kHz—covering bass, midrange, and treble—to reproduce music, radio broadcasts, and navigation prompts with clarity. The speaker’s 4-ohm impedance and 25W RMS power handling (50W peak) match the output of Dongfeng KL’s factory audio system, avoiding distortion even at high volumes. A paper cone with butyl rubber surround enhances bass response (critical for cutting through road noise) while maintaining rigidity for crisp midrange, unlike plastic cones that produce muffled sound. This performance ensures drivers can hear audio clearly during long hauls, reducing fatigue from strained listening

Built to withstand the constant vibration and mechanical stress of truck operation, the speaker assembly features a rugged design. The frame is made of impact-resistant ABS plastic (UL94 V-0 flame-retardant rating) that resists warping or cracking from cab vibrations (up to 2000 Hz). The voice coil is wound with high-temperature copper wire (rated for 180°C) that prevents overheating during extended use, while the magnet is encased in a steel shield to protect against damage from metal debris. The speaker’s terminals are gold-plated to resist corrosion from cab humidity, ensuring stable electrical connection through 100,000+ hours of use. Unlike consumer-grade speakers that fail within months in trucks, this vibration-resistant design ensures reliable performance for 3+ years

Designed for efficient replacement by fleet technicians or DIY owners, the assembly simplifies installation with user-friendly features. It includes 4 OEM-matched mounting screws (M4×10mm) that fit the truck’s existing speaker bracket holes, requiring no drilling or adapter plates. The 2-pin electrical connector is keyed and color-coded (red for positive, black for negative) to match the Dongfeng KL’s audio harness, eliminating reverse polarity (which damages speakers or audio systems). Installation takes 15–20 minutes with basic hand tools (e.g., Phillips screwdriver) — no soldering or wire stripping needed, as the connector plugs directly into the factory harness. This hassle-free process reduces downtime for fleet trucks and ensures correct setup for individual owners

Engineered to minimize external noise interference and withstand cab environmental factors, the speaker includes additional protective features. A foam gasket around the speaker’s frame creates a seal between the speaker and mounting panel, blocking road noise and wind noise from entering the audio path—enhancing sound clarity by 20% compared to un-gasketed speakers. The cone and surround are treated with a water-resistant coating that repels spills (e.g., coffee, cleaning fluids) and resists damage from cab humidity, preventing mold growth or material degradation. The speaker also meets IP54 dust/water resistance standards, protecting internal components from dust kicked up during off-road or construction site use. Unlike unprotected speakers that degrade from moisture or dust, this design ensures consistent audio performance in all cab conditions. Backed by a 12-month warranty against manufacturing defects (e.g., cone tear, voice coil failure, connector corrosion), it provides Dongfeng KL truck owners with reliable, high-quality audio for long-haul comfort