Line Out Converter

[ferneyhough]

I have a question that I hope someone can answer. I just recently had my car audio guy install my entire system which consists of a jl audio stealth box sub, 2 pairs of jl audio C-570x, 1 zapco ref amp 360.4 , 1 zapco ref amp 500.1 & 1 Kinetik KHC800 Power Cell, & a Cache coe6 Line Out Converter. The problem that I am having is that for some strange reason the front speakers sound very distorted when I turn the volume up 3/4 & higher. My car audio guy thinks it's the deck or the LOC, he thinks the deck & the LOC are not communication on the same DSP or frequency. Anybody have any ideas? Also forgot to mention that my Zapco amps are all running symbilink cables ( that came with the amp's) & not RCA's.I have all my pin's in my Symbilink drivers set at 0db & all the gains on the LOC turned all the way down & on the LOC all the jumper pins set to Direct. All all bummed out after spending an arm & a leg for this stuff, help . Also took 2 pic's of the back of the deck & the bottom of the deck (2011 SEL model) in case anyone is interested, who new that FORD would use Clarion for their decks, not me that's for sure. Thank you to all in advance.