ok before I go pulling it out and trying to put it in (giggidy) I was wondering if anyone has this head in a rack already. http://www.timewilltell.org.uk/Trace-elliott7215smc.jpg thats my amp. anyone got ne experience?
Trace made rack-specific heads, but not many. Look for models that start with RAH. In 15 years of playing Trace Elliot I have never once heard of someone successfully converting a combo or amplifier into a rackmount. I suspect you're about to find out why when you open it up
My GP12smx head came with rack ears. I have never had it out of the head case before though. It is 17 1/8" wide for reference.
SGD Lutherie said he used a BLX head, but didn't say if he took it out of the combo or not. Might ask him. http://www.talkbass.com/forum/f15/team-trace-elliot-part-ii-754449/ I use the GP7 SMC head from a BLX combo. It's a great sounding amp.