Problems

My speakers make a buzzing noise when i rev the engine, or just constantly buzz no matter what i do

My speakers are crackling and not producing sound like they used to

My amp wont turn on

If your amplifier won’t turn on there are several possible reasons.

1. There is no ignition live, check this with a multi meter.
2. The amp has a blown fuse, or the inline fuse has blown.
3. The amp may have gone into safety mode. This could be because your wiring is short-circuiting, or the speakers are damaged.
4. There is no live feed

The earth is not connected.

 

My radio forgets its settings each time i switch off the cars engine

Questions:

What is RMS power?

How are watts or power calculated?

What is the difference between current and voltage?

Why/ how is my car chassis earthed?