Mazda 3 loud repetitive noise from speakers due to faulty Bose amplifier replacement issue on Mazda 3

Some Mazda 3 owners report experiencing loud repetitive noises from the speakers, which may be attributed to a faulty Bose amplifier. These issues can manifest as stuttering sounds, white noise, or random noises when opening the car door. To resolve the problem, some owners have opted to replace the defective Bose amplifier, with costs ranging from $500 to $1600 for a new unit, while repair options through eBay sellers can be around $150. Additionally, some users have successfully rebuilt their Bose amplifiers for approximately $160, alleviating their sound issues. Others have chosen to replace the speakers with aftermarket options and use a compact amplifier for improved sound quality. In certain cases, bypassing the Bose amplifier may be necessary due to impedance and compatibility concerns. It's also worth noting that Bose may have discontinued the free replacement amplifier program for some Mazda 3 models, limiting replacement options. If you encounter this noise issue, assessing the Bose amplifier's condition and exploring repair or replacement solutions could be beneficial.