Yes, I've never had an issue with them at 1 ohm. They give a bit warmer, but that's about it. Just make sure you keep your voltage at 12 or higher all the time.
...but don't blame me if you kill it. //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif