Using Impulse Responses in Sonar.

In perfect space at the top left is an icon that looks like a peice of paper with the corner peeled back a little, just click that and it should by default open to the Perfect space impluses. Choose one of them or browse to the location of your downloaded Red Wires Marshall. If you're wanting to run the entire signal through, then load perfect space in the Fx bin of your gtr track. Otherwise for a bus Reverb, load Perfect space into an FX bus bin then insert that send on whatever tracks you want the verb. For bus verb you'll want to turn off the dry signal and turn up the wet a little, then dial the wetness each one from their own sends.