Subs problem. Help!

[GTiLuke]

Well I wired everything up for two subs and amp and has been working but sometimes when there's a bass drop it just rumbles non stop and won't go off until I take the key out Orr remove the remote cable.

[trog_nfs]

Its interference from a power supply.

Make sure your phono cables run a different side of the car to your power cables.

Also turn the gain on the amps down but the level on the HU up as that can help minimise it.