Well I just finished my audio upgrade and boy did it make a difference.
2013 CC / 8.4an head unit and Alpine 9 speaker and 1 subwoofer system.
I started off with the front dash speakers. I installed Infinity Reference 3032cf
speakers (front sound stage) and disconnect the center dash speaker for better separation. The front stage sound is more crisp and defined. I was able to change my center fade control closer to center with the much improved sound. Disabling the center speaker removed the muddy sound that I didn't like. I can hear the front door speakers now with the change in the center balance. The dash speakers are plug & play if ordered from http://www.crutchfield.com/p_1083032...032cf&skipvs=T
with free wire harness. Picture #1.
Second I installed behind the back seat the JBL GTO-501EZ Amp
(500 watts rms @ 2 ohm's) and the JBL GTO-RBC Wired Remote Control
along with a 4 gauge wire kit. I wired the amp to the OEM subwoofer (8" DVC 2 ohm subwoofer). I wired it in series so that made it 4 ohm's impedance @ 350 watts rms output. This is more than enough power (350 watts rms) for the OEM subwoofer. The JBL Amp woke-up the subwoofer and now I can shake the cab of the truck with rich deep bass and sharp thump. Picture #3.
If you get the JBL GTO-501EZ Amp make sure you get the wired remote control
(JBL GTO-RBC) so you can adjust the amount of bass from the dash. See picture #2.
I spent less than $280 to get the sound that should have been there from Alpine and Dodge to start with. Now I have premium sound.
Subwoofer wiring harness color: Picture #4
Gray / White Stripe (+) Dark Green / White Stripe (-)
Gray / Brown Stripe (+) Dark Green / Brown Stripe (-)
Subwoofer wire colors:
Coil 1-- White (+) Black (-)
Coil 2-- White (+) Black (-)
Wired in series 4 ohm impedance: Amp output (+) to White (+), Black (-) to White (+), Black (-) to Amp return (-)
Install note: With the 8.4an head unit you need to use the remote turn-on wire with the JBL GTO-501EZ Amp. The auto sensing when used will not turn the amplifier off after 5 minutes. You need to run the wire to a switched 12 volt source and turn the switch on the back of the Amp. to off. This was the only problem I had with the install.