Call to all Audioheads

[ErnieBoling]

It has been 20 years since I have messed with car audio, and I am afraid I have bitten off a bit more than I can chew...

The truck: 2014 Ram 2500 Laramie Longhorn w/ "Premium Alpine" system.

The set up: I have replaced the dash corners, headliners, and rear doors with 4ohm Kicker speakers. I removed the factory sub and installed two 10" 4ohm SVC Kicker subs in a sealed enclosure. The subs are pushed by a Kicker CXA600.1 amp. I have the left and right channel factory sub wires feeding into the left and right channels on a AudioControl LC2i, the left and right channels from the LOC going into the left and right channels on the amp, and one channel from the amp going to sub 1, then run in series over to sub 2, for a 2ohm load.

Problem: I have all but lost the sound from the front door speakers, which still have the factory speakers. If I open the door, squat down, and put my ear to the door grill, I can hear some sound. But in the driving position they may as well not exist.
Questions: I know the front doors are crossed over for low freq only. Are they tied into the sub wires? Are my tens stealing the power from the front doors, muting them? Or any other ideas/fixes someone can suggest? Also, I can find all kinds of info on tuning an amp, and the same for the LC2i, but no info on how to meld them together. Do I turn the gain completely off on the LOC and only tune the amp gain? Vice versa? Use both? Also, the bass boost. Use one, the other, or both? I have an Accubass knob on the LOC, an Accubass threshold adjustment screw, a gain on the LOC, a bass boost on the amp, and a gain on the amp. I also have a remote bass boost knob installed up front for on the fly tweeking. Any insight on how to set all this would be greatly appreciated.

 

[adurm]

You might need a resistor at the loc to make the alpine think its not an open circuit. You'd want to turn the loc output up opposed to the amp gain. Up to max undistorted level of course. The bass knob is an attenuator, so it should only be for turning down the sub.

 

[Graygoose]

Your using the factory Alpine to the front doors and dash?

 

[ErnieBoling]

You might need a resistor at the loc to make the alpine think its not an open circuit. You'd want to turn the loc output up opposed to the amp gain. Up to max undistorted level of course. The bass knob is an attenuator, so it should only be for turning down the sub.

Here are the manufacturer specs on the LC2i:
Input Impedance: 20,000 ohms

Output Impedance: 150 ohms
What size/type resistor would I install and where?

So leave everything flat on the LOC and just tune the amp as normal?

Thanks you for helping out. This has been very frustrating.

 

[ErnieBoling]

Your using the factory Alpine to the front doors and dash?

Yes. The only added amp is the Kicker for the subs. Head unit and factory amp are untouched, and are still pushing all other speakers with the exception of the subs.

 

[Graygoose]

The Alpine probably has midbass crossed over too low on doors, subs have way more power, and 4 ohm dash speakers makes it scream up top.
So your sub, and dash heavy I bet.

 

[adurm]

I want to say it's a 37 ohm resistor. You'd have to google exactly what you need to do. If you have a volt meter it would help you set your levels. I'd turn the loc up before adjusting the sub amp gain. Your sub xover should be around 80hz.

https://www.audiocontrol.com/car-audio/accessories/ac-lgd/

I believe you need one of those. They come in pairs though.

I might be chasing the wrong thing. Your front doors are probably wired in parallel with the dash. By adding 4 ohm speakers up there, you're changing the factory amp impedance load.

 

[Quick_Shifter]

First thing to do is work backwards un doing one thing at a time. The subs and sub amp are their own thing so you can leave them alone. Un hook your Audio Control LC2i and then disconnect the dash speakers. Im sure its something very simple. Also pictures speak 1,000 words