I have always played combo amps/cabs and never had learned anything about amp headers and cabs. Recently i purchased two "steals" an "Acoustic 600h" amp head for $225, and a "Hartke 4xl- 4x10" cab for $200. I also own a "SWR workingmans 2x10" cab. Both cabs are 8ohms. What is the proper way to connect all of the three? If so does the 400 watt Hartke and 200 watt SWR act as 600 watts together? Buy just using the Acoustic 600h with the Hartke 4xl alone, Am I going to damage the speaker? Here are some pictures of the inputs and outputs of all three units. i could not figure out how to upload them so i make a quick webpage i could post em on. http://newamprig.webs.com/apps/photos/album?albumid=14593141 thanks everyone. i appreciate it for your help.