Trying to understand something and I guess my old brain is having a hard time understanding. I know what my ears tell me. Anyway I am running a Helix through my JVM205c using the 4 cable method. Just like I have been doing on my Freidman BE50. Here is what throws me off. Actually two things. There is a FX loop switch on the front of my amp and even when I have it off I can still here my effects on my Helix. Just running reverb, a delay, OD, Dyn Com. When I engage the switch on front things sound almost too compressed. I have tried adjusting the FX knob on the back of the amp but to me the FX switch off still sounds more open and musical. What am I missing or am I missing something? I just want it all hooked up and running the way it should and I can go from there. Any thoughts or help? Please in layman terms.