Dongfeng KL truck parts recorder Speaker assembly 3775020-C3301

Built to prioritize clear alert and prompt transmission for the truck’s recorder, this speaker assembly features targeted audio tuning. Equipped with a paper pulp cone and natural rubber surround, it focuses on the 200Hz-8kHz frequency range—optimized for human voice clarity, which is critical for recorder-generated alerts (e.g., fatigue driving warnings, speed limit reminders) and event playback audio. The 15W RMS power (30W peak) is calibrated to the recorder’s audio output, avoiding distortion even during loud emergency alerts, while its 90dB/W/m sensitivity ensures alerts cut through cab noise (60-80dB) without overloading the recorder’s power module. A compact neodymium magnet reduces size while maintaining stable sound output, making it ideal for the limited space near the recorder

Engineered for the compact installation environment around the Dongfeng KL’s recorder (typically dashboard or overhead console), the 3775020-C3301 speaker features a space-saving, robust design. With a total thickness of 65mm and 4-inch diameter, it fits into the recorder’s dedicated auxiliary compartment without interfering with other controls. The frame is made of high-impact ABS plastic (UL94 V-0 grade) that resists deformation from cab vibration (10-300Hz), a common issue that distorts recorder alert audio. The cone’s paper pulp material is treated with a water-resistant coating, and the rubber surround maintains flexibility over 100,000+ hours of operation, preventing sound leakage that compromises alert clarity

Optimized to avoid disrupting the recorder’s sensitive electronic signals, the speaker assembly integrates comprehensive anti-interference features. The wiring harness uses shielded copper conductors (tinned copper braid) that reduce electromagnetic interference (EMI) by 80%, preventing signal disruption to the recorder’s video and data transmission. The speaker’s magnetic circuit is enclosed in a nickel-plated steel shield, blocking magnetic interference that could distort the recorder’s sensor data. The 3-pin connector features gold-plated pins for stable signal contact, minimizing audio dropouts during recorder event playback. These designs ensure the speaker operates without compromising the recorder’s core functions, complying with automotive electronic compatibility (EMC) standards (ISO 11452)

This recorder speaker assembly is designed for efficient maintenance and long-term cost savings for Dongfeng KL operators. The pre-assembled mounting bracket and color-coded connector allow a single technician to complete replacement in 30 minutes using standard tools—no specialized audio or recorder expertise needed. The OE-compatible design eliminates audio mismatch issues common with aftermarket speakers, which often cause recorder alert distortion or system errors (repair costs up to $400). The targeted audio tuning ensures reliable alert transmission, reducing the risk of missed safety prompts (e.g., fatigue warnings) that lead to accidents ($15,000+ average cost). With a service life of ≥300,000km and 2-year/200,000km Dongfeng warranty, it provides predictable maintenance expenses and enhances recorder system reliability