which coil to use

[jerseyman32]

I just got my kanger ipow, ita my first vw device it maxs out at 5.0 volts 15 watts.. Which kanger dual coil would be better to use if the 1.5 or 1.8 ohm? Does it matter

 

[Str8vision]

You could use either but can't run the 1.5 ohm head at 5 volts. Here's a link to a ohms law calculator http://www.google.com/url?sa=t&rct=...2YL4Dg&usg=AFQjCNF7UzDBA5apQU669ymt3LtF-WpkGg Plug in your volt and resistance values and hit calculate. Notice that at 1.5 ohms and at 5 volts you would exceed the 15watt rating of your device, below 5 volts and they are fine. The 1.8 ohm heads would have no such conflicts throughout the voltage range of your device.