I'm a definite non-expert when it comes to matters electronic so please forgive me if my problem is common and/or stupid. Background: I play a MTD Kingston Heir 5 (MM-J, 3-band active, all stock electronics) in a church band. No amp, just through my pedal board straight to DI, with IEMs for monitoring. The usual sort of lighting you'd expect in a large hall (500-seater) but no excessive electrical equipment around - no amps on stage at all. Problem: I've noticed that I'm picking up the house sound through my bass. I noticed this tonight when an iPod was being played through the speakers but not in monitors. I was getting it in monitors through my bass. When I turned the volume up on the bass, the music got louder. When I turned the blend towards the neck single-coil, louder still. Boost the treble? Even louder. It may be that I've got the bass soloud in my ears that I'm hearing a problem that no-one else will notice, but I'm concerned that this is happening at all. I've opened the bass with no idea what I was actually looking for. The control cavity seems tidy, no loose connections and it seems to be pained with what I presume is shielding paint. Question: any idea what's most likely to cause this sort of problem? The only tests I can easily run are plugging direct rather than through my pedal board (I'm sure I've tried this before with no difference but will check again) or trying a different lead. After that I'm left with wiring, pickups or pre-amp as the possible problems. Thoughts? Any help greatfully received!