helping figuring out system, please want to do build by June!!!!!!!

[eviling 10+ year member]

so i'm trying to work out this system, still kinda hung up on some things, this new car is messing up my plans, i have been working on a build around JBL 660's for years, finily got these parts together now i have this 2015 kia soul, perfect i love it for my ideas. I get the equipment, I'm almsot ready than i find some issues. sigh..... the quesiton is, do i want processing? It'd be nice yes. I fully understand the technology i've been to car shows i;ve seen 15k$ car builds, 600$ car buids. I get it, but what will i be happy with? that never seems quite as easy as it sounds to figuire out. so, this thread if me trying to figuire that out. but, the staging is nice stock as is, the eq seems nice, who knows what it'll be ont he new equipment but. but i could do the cheaper route than upgrade later? idk i dont think i'm digging back into this for awhile..if i get a tuneable one thats cool it give me more out of the project really to me, that is what i like. the tinker. to be a craftsman and to tinker that is my passion and that is why we are all here I believe.

So for starts I'll be using the stock head unit, not sure if i will retain stock amp or not. want some real input on this matter.

the navigation \ center channel so you see why i want to keep them the navigation rocks, 8" capciative touch screen, upgrades to android auto, i'm keeping this reciever.

the stereo puts out a digital 5.1 SPDIF signal into stock amp. at first i thought. alrright awsome! but than i was informed most DSP's won't decode and only wont take a coded signal such as DOLBY DTS and the likes. I belivee my output on my 2015 kia soul to be 5.1 DOLBY.

heres the diagram at the amp of the harnesses I'd be tapping into most likley, as i could also run SPDIF and navigation from behind the stereo to achieve the best quality connection also, but seems like more work and for what exactly?

this is the harness setup behind the stereo -

solution A -

wire these 6 analog outputs into the input of a process

Talked to a few company RF, Rainbow. there techs inform me this type of method should work, the rainbow 1.8 has navigation inputs, and the RF .3 will allow descrete passthrough of a channel so i can basicly pass that low level navigation signal to the processor to be passed through with high levels into the channel of the amp i on the SQ4070. the germans seem far more helpful americans just wont answer a quesiton they don't know...or aren't 100 % sure. idk why. I do not know of any other units that decode cant find anything car grade. these looks cheap. i dont like the idea of them being he back bone of my stereo and being so cheap. so I'm headging. ideas? anybody know anything?

units that take 5.1 DOLBY in -

JBL ms-8

Alpine H800

the idea i'm doing is really good sound..do i need a processor? i don't know, i do like a high end system .i've had an ms-8 in a system ive heard h701's, 360.2, all kinds, i do like the upgrade you really get, BUT my car does already have premium features, so am i satisfied enough for the EQ and DSP of stock setup. I kinda of honestly am, so i could get more dynamics with the upgrades alone and the volume i want without adding prcessing, so the real question is am i creating my own problems?

No processing design (I'd likly use the JBL passive crossovers or I could use the mmats crossovers I believe. -

WITH Processing -

You can picture the rest from here, the MS-8 setup is basically with out the decoder, and I'd have to get a line converter for the navigation channel.

my question regarding my plans on the navigation feed, is this even sane? or am i retarted. seems like it makes sense to me but I don't know how the amp on the circuit is going to affect the performance of it, will it be recognized in this sense as a load? will it affect the property of the driver its self. I suspect it could easily add noise?

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[Papermaker85 5,000+ posts]

I would't trust any factory radio with highend gear.

2 I wouldn' use rears nor would I mix speakers

3 5.1 do by is pointless in a car. Only movies are processed with 5.1 and the processor doesn't care what signal your feending it unless your using it to process and alter the signal in 5.1 but it's pointless honestly. You could use any processor and you each output individually from the eq to the xovers to time alignment. It's just input/output based and any good one should let you use each output individual..

Using rear fill is pointless. My stock radio has it and I turn it off..

Honestly I don't know much about the coding or source but that convertor you have looks like it would work I just wouldn't bother with 5.1 in my car. It's pointless..

 

[eviling 10+ year member]

So something like an spdif to 2 channel stereo converter would be simple enough?

Rears may be pointless to you but not to everyone. I ride with allots people. Road trips. This cars audio build is built to from my experience and what i want.

Now the reason your not understanding I want the 5.1 decoded is I'm told allot of processors don't do centers well with rears so I was told by a member on a forum it'd be adventitious to use the canter channel in much the same way I plan to do the navigation feed.

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