Well...I did it. I went to the store and got me an RMX 2450, 4 space rack, and cables. I'm gonna run out of my Hartke 400...since I like the tones and control I get with it...also I could still use the Hartke's power section if like. Just a question. This is my first rack case...the QSC is in there now but I woun't be putting the Hartke in there 'till Sunday. At this point though I see that if I put it in there...the vents at the top of the Hartke would be blocked of air...thus would the fan sufficiently keep things cool? I had this problem when I was just pushing the Hartke by itself, it's protect circuit would come on...sooo...to remedy I reversed the airflow, (the fan), and didn't have any problems after. However I know that is not what the designers had intended so I just went and got the power amp. So there you have it..any advice? BTW...2400 watts at 4 ohms bridged into one of Dave's, Avatar 212 and 410...handling together....2400 watts. I do believe I'll be getting another cab from him to hook up to the Hartke at 4 ohms...what the Hell! BTWBTW...I've always wanted to get a Warwick Thumb or Infinity...'till today. Found my first Spector Euro at the shop...Dark blue type striped fade inot black paint job...gold harware...BEAUTIFUL...and played the best out of any bass I've played and felt the greatest and was the most expensive I've seen in "real life"! Whew...I'm done.