How much power is too much for a car audio system?

scanlon180 asked the question: This is more for an opinion than an answer, but how much power is too much on a car audio system? I have a 1200 watt sony system and it has enough power to shake my street. What’s your guy’s opinions?

Using oscilloscope software to tune car audio system?

z0plax asked the question: Can anyone provide me with details on using oscilloscope software plus my laptop to tune my car audio setup?
I have a head unit plus an amp and 12″ subwoofer in the trunk, I’d like to be able to tune it using oscilloscope software but not sure what programs may be out [...]