These first videos are on the DSP125.4D and the DSP150.4D Software (application) CA AMP. These will help you in your quest for the best audio on your bike! There is NO right or wrong sound. If you like it, great. Doesn’t make it right, but doesn’t make it wrong either. There are some technical issues that CANNOT be overcome. Like the laws of Physics for example.
Watch these videos as it will answer many of your questions. Enjoy!!!