so I did a sound test today and hooked everything up... Sound is very much ok but I noticed when I put the preamp in the splawn return fx loop jack my front panel volume controls do nothing (splawn doesn't have an overall master volume and mine is an older one so it doesn't has the fx volume pot). I need to set the volume with the output on my studio preamp...
I am thinking that is probably because the volume control of the splawn is located in the preamp section rather than the power amp section of the amp?
If I drive the output of my preamp high/hot in the fx return I should be safe? Nothing can explode lol ?
Yes, the volume on your Splawn is probably at the beginning of the circuit, which means you're coming in after it when you patch into the effects loop. The power amp is basically running full tilt all the time, so controlling overall level with the SP is the right thing to do, and no, you can't damage anything by doing this.