It's no secret that I am not a car stereo specialist. Thus the reason for this thread. I have a 04 GTP Comp G with the Monsoon audio system. The sound from the speakers sounded terrible when turning up the volume. So I purchased some Rockford Fosgate Full Range 2-way Speakers. P165 for the doors and P1692 for the rear deck. Thought this would be a no brainer but apparently some brains are required for this install. First thing i found was a Stinger SALOC Adjustable Line Output Converter in the trunk that was spliced into the rear deck speaker harness. The wires were partially disconnected from the Stinger. Also bundled up halfass like was a large blue cable that was cut but is connected to the battery, a large black ground cable(also cut), what looks like some serious speaker wire(again cut) and a smaller gauge wire that is connected to a rotary knob I discovered in the recess for the ashtray. At this point I was getting that "In over my head" feeling but went ahead and temporarily installed the P1692's. I first hooked up the speakers to the 2 wires what were spliced into the Stinger. Almost no sound coming from the rear speakers. I then connected the speakers to the 2 wires that were not spliced to the Stinger and I now have sound but it is all treble. Thats were I stopped and figured I would throw out a lifeline and see what kinda advise I can get here. My best guess is my car used to have subs and possibly a amp...both have been removed by previous owner. So, that being said, any of you car audio gurus have some words of wisdom for me? Thanks in advance.
I attached some pics to give some idea what I am working with.
Stinger SALOC
Small rotary knob in ashtray recess
JVC KW-XR610
