Ive had a Spider 3 15 watt amp for a while now, and I've noticed that even on clean with no crunch whats so ever, I get loads of feedback and interference on the bottom four and sometimes 5 strings even when i use noise canceling humbuckers.. does anybody else have this problem? and does anyone know how to fix it?

How loud do you have it? How high is the treble or gain turned up?
I don't give a shit if you listen to me or not
the volume is at 3/4 but i play at reasonable bedroom levels by turning the volume on the guitar down.. the gain is on 0.. and the treble is at 6..