Hello everyone! I just bought a 2008 Infiniti G37. It has the premium package with the Bose system in it with navigation. I am looking to upgrade. Here is what I have bought so far, nothing has been installed yet.
1. JL Audio 10w6v2 (one sub)
2. JL Audio 500/1v2
3. Custom Made Sub Enclosure (4080 enclosures)
4. MTX RE-Q5
5. Stinger 5 farad SPC505
6. Dynamat Extreme Bulk Pk. #10455

It has been a long time since I have been into any kind of aftermarket car audio (approx. 12years). I want to keep the factory headunit since it has navigation and a very nice screen etc.
My question is, how does the setup sound so far? I want to add some highs/mids to the system, but how can that be done using the factory headunit? I would like to add one JL Audio amp and a component unit (maybe front and back), but I was told the easiest way to do this would be to replace the headunit with something aftermarket, but I do not want to do that. I was told that if I don't, then it isn't the preferred way to do it and that there would be a lot of wiring etc. and that returning it to a factory setup if I ever wanted to would be difficult. What is everyones advice and suggestions for keeping the factory headunit and adding like some Alpine Type R or Xpro components? I need all the help/advice I can get. I am basicly a rookie at this all over again. Can I easily add the components and run the whole described system from the factory headunit? I bought the re-q5 and maybe this helps with this, but to be honest I really don't know much about all this anymore. In fact I never did know a whole lot. All you experts chime in and get to posting. Thanks guys!

 

I'm in the same place you are. Would like to keep the head unit (although I didn't get the Bose system thinking it would be easier to upgrade), but am still running into challenges. If it's been 12 years since the last time you dealt with this, then you were probably like me and thought "I can go to crutchfield and find what I need". At any rate, can't offer much help yet. I will be seeing a custom av professional in the next couple of months. If you are still struggling then - I'll let you know how it turns out.

No stress - It'll work out.

Enjoy the car (I am).

Cheers.

 

There is a simple solution to this. "RCA Converters". This will allow your amp to connect to your factory unit via rca cables. In this case I would "highly" recomend getting an equlizer. If you don't I can promise you wont be too happy with the sound the stock unit delivers. This is how I am going to do mine. There is nothing wrong with this option except if your motivated to have the best sounding system. Also your options will be limited on regulating your sound unless you get a digital eq installed close by or a manual eq installed close by. One thing is sure...using a after market unit would have all the needed options built inn but I agree with the factory clean look. Also I think a factory unit does not screem out "steal me"!!! I think while your at it you might as well buy a multi channel amp to connect to your mids and highs. But remember most rca converters only run one channel per unit and if you want good sound you must put atlest $50-80 down on the converters per converter!!! I do think there are multi channel rca converters, you might want to search yahoo and find a good unit and a solution that suits you.
-J.B.

 

Agree, but if you have the premium Bose, that is a 4 way system (highs, mids, mid bass, and bass). You will need a line output converter capable of handling all these signals. Signal summing is not a bad idea at this point. I am using the AudioControl LC8 (system install in progress).

 

There is no need for signal summing. The signal coming out of the HU is clean and full. It's a balanced signal and must either be hooked up into a unit accepting balanced lines or converted. If you just try and hook unbalanced RCA's to it, you will get nasty high frequency noises. Once balanced, all gone. I drive my whole system from the front right and left channels.


Unless you're talking about the signals coming out of the amps, which is just plain retarded to use IMHO.

 

this is nonsense. The signal coming out, for all intents and purposes is a flat signal. For full optimization, yes I would recommend an EQ in ANY system. But to say someone definitely wouldn't be happy with it is completely false.

 

Use a Rockford Fosgate 3sixty.2 to accept the incoming headunit signal and output the required signals. Fully adjustable too! I'm not sure about the additional wiring as I have no idea how the G37 is wired, but could be worth it.

BTW, I am not 100% certain this will work so please do your own research. It is an oft-suggested route for upgrading audio components while keeping the OEM source. Good luck!

 

My installer told me it could not be done, but now I know he was full of it. WHERE are the Bose amplifiers? What are you using between the unamplified signal and the amps? Would my LC8 work for that?

 

The Bose amps are in the trunk under the large drivers side plastic panel on the trunk floor.

You don't really need anything between the headunit line out signal and an amplifier. The amplifier amplifies the unamplified signal.

If you are planning on adding an equalizer it would go there. However, it certainly isn't necessary.