BSW Stage 1 Problems

[hunds02]

I got the BSW stage 1 upgrade kit a year ago and everything was working fine. I noticed earlier this week that all three speakers on the front passenger door (tweeter, midrange, and bass driver) do not produce any sound. I knew they couldn't all went bad together at the same time, so I removed the door panel and noticed that the capacitor (axial 3.3 micro farad 100V capacitor) was loose from the wire. I played with it a little and the speakers on the passenger door would work, but then it came completely loose, as one of the leads snipped off. Does anyone know if this kind of capacitor can be purchased at a store rather than online somewhere?