Because the diagram shows Line level output from the factory HU and I don't know any better..lol.That DSP has high level inputs, why are you soldering on RCA plugs?
I've tried using the Helix's high level input (from the factory diagram) and still it wasn't seeing any signal on the software and that's why I'm thinking that since it's a line level out not speaker level, I should be properly using an RCA connector into the Helix.
Honestly, I'm a bit lost/frustrated on why I'm not seeing any signal and trying to eliminate either the RCA vs high level input problem.
My other back up/last resort is to grab an actual speaker level output from the factory HU (might not be full range) and feed into the Helix. I was going to leave the factory rear doors intact since my daughter sits in back and I want to be able to play music back there as well.
This is a brand new DSP that I bought from this forum. It's possibly that I'm an idiot since I haven't used PC DSP tool in 3-4 years. I did read these sections (KB from audiotec website) and the manual.
I followed the manual where it asked me to play a test tone generator at 90% and keep sliding the input bar until it clips but it never did.
I also watched this part of the screen to see if any signal (the blue bar never appears). Thus, I was thinking my input signal must be wrong.