Whenever I turn my car on, my Diamond D3 400.4 seems to get turned on a few seconds before my D6 1500.1 does. There's vocals and then about 4-5 seconds later the bass will finally get going. It's not much of a problem to me, but I was just wondering if there's a few to have them on at the same time or why there's a delay for the subwoofer amplifier.
