How can I make my car light show light up at lower volumes?
Please help me out if you have some basic knowledge of electronics! I am trying to make an array of LEDs pulse to the music of my car stereo. I am basically just running the car's battery power and the preamps on the back of the stereo out to some transistors. The only problem is that you have to turn the stereo up really loud for the lights to pulse like they should (to the point that the audio distorts and stuff). I'm pretty sure that at maximum volume the preamps give off 2 volts.
There are only 2 solutions I can think of to fix this problem:
1. Buy more sensitive transistors, like ones that will let current through at say, 1 volt or 1/2 volt.
2. Amplify the signal coming from the preamps.
I don't know what transistors to buy or how to amplify the signal, so if someone could tell me how to do that that would be great. Also, if you have a better suggestion lay it on me! And one more bonus question- if I ever wanted the lights to pulse in stereo, where could I put diodes to make that happen? Thanks!