My old receiver though has Dolby Surround, does not have a dedicated sub-out. Right now I am using parallel High Level connection to my Energy S10.3 sub. It works well. But I am curious if there are any better way to do this.
1) Y-splitter cable for pre-outs/main in
2) use the receivers built-in Mono outs?
#2 would be easiest I suppose since it just means connecting a single RCA cable from the mono out from the receiver to the sub-in for the sub.
What do you think?