ok. when i lower the amp volume(since i live in a flat), the sound tends to break up and then it will only come back with a lot of static when i strum really hard. it will also have some crackling noise when i play it at slightly higher volumes.from what you described in your first post, the problem may very well not be with the pickups. could you explain more in detail about the static sound and about "doesn't work very well at low volumes"?
might be the cable, might be the amp, might be the jack might also be the volume pots.