WSAH4700 2-Channel Loudspeaker Protection Kit

This two-channel loudspeaker protection kit offers a reliable and cost-effective solution for safeguarding your DIY speaker builds against potentially damaging DC offset and disruptive turn-on thumps. Designed for hobbyists and audio enthusiasts, it provides essential peace of mind when constructing or upgrading amplifiers and active speakers. The kit is particularly well-suited for use in multi-channel systems, stereo amplifiers, or any custom audio project where protecting valuable drivers from unexpected faults is a priority.

At its core, the kit continuously monitors the amplifier’s output for dangerous DC voltage. Should a fault be detected, the protection circuit instantly disconnects the speakers, preventing costly damage to voice coils and crossover components. Additionally, it introduces a controlled delay during power-up, eliminating the loud and jarring thump that can occur when capacitors charge. This ensures a smooth, silent start every time. The relay-based design offers robust switching and long-term reliability, while the compact PCB layout makes integration into existing chassis straightforward. With clear connection points and straightforward assembly, this kit is an ideal upgrade for any serious DIY audio project, combining essential safety features with ease of installation.