| I'll take a stab at this, since I have used the Crown XTI power amps, on the Ampeg amp you could use either the Di out to the Crown or you can use the Preamp amp out to the Crown, I believe the preamp- out will let you use the volume control on the ampeg, where as the DI out, I believe the volume control on the Ampeg will not control the DI volume output, you will have to build a cable to connect the Crown XTI, if your using 1/4" jack from the Ampeg, Crown has a drawing, in the owners manual, on how to build the cable, bridge the amp using the control menu, you'll have to buy/build a cable from the Crown's banana plug's output jacks/binding posts, to the 810 cabinet, that's how I use mine, but I use the VT Bass pedal board as a preamp, and I use the Crown XTI 2000 |