Obviously quads going to show up here... I have a Hartke 3500 head, and playing it out of a single JBL 15, it makes the thing fart more than my grandmother on thanksgiving. when i turn the volume to 10 oclock (about 4th level) it is very loud, and doesn't fart (on the verge to though) Would a goliath jr. do the same thing? about what volume level could i turn it up to? another thing i saw was the avatar 4x10, which most likely at 4 ohms,could handle the power. thats the way i figure it. The last thing i want is cab that can't cut it.