My friend and I are into car audio and home audio equally, and he brought this program to my attention that is great for checking driver performance and a certain box.
The program is called Winisd, and its free. Go to this link, and click winisd pro on the side, and then download.
http://www.linearteam.dk/default.aspx
it can also play sine waves from 10 to 20000 Hz.
sheep
