I am new to car audio , anyway , the taramps HD3k has a 1ohm and a 2ohm version , does this mean 1/2ohm stable or does this mean it will produce 3k at 1/2ohms?
It means one is stable and produces the most power at 1 ohm and the other is stable to 2 ohm and produces the most power at 2 ohms. Do NOT wire an HD3000 to .5 ohm or a 2 ohm version under 2 ohms.