2 X 12 4 ohms DVCs wired right?

Ok, here's my system above. I took this picture this evening. I should of did it earlier when it was light? Anyway, this is my setup less the MB Quart speakers in the doors of course.

You think the enginge whining sound is because of the Coustic amp? Isn't the whining usually from a bad ground? Thanks for your help forbidden.

I disconnected the front speakers from the Coustic amp and hooked them up to the Ultimate amp for testing. The whining is coming from the Coustic amp in 4 channel mode. There was no whining with the Ultimate amp. I also noticed there was no whining in the back speakers only when I had the front speakers connected to the Ultimate amp. It seems the whining comes out when all 4 channels are being used on the Coustic amp. I guess that's what I get for trying to use a cheaper amp. It actually sounds really good. It just bothers me when it's at very low levels. Maybe I'm picky but I want to do this right. Thanks for your help.

Was a good clean 4 ch amp with 75W - 80W RMS per channel?

Here is a good amp for the money. 

http://www.sounddomain.com/sku/USAUSX4085

Did you check your RCA's? It is not uncommon to get a bad set that that will drive you nutz thinking that it's your equipment.

They used Streetwire RCAs so I believe they are fine? They have kind of a silver nylon weave insulated around them.  The RCAs also have grounds on r & l (red & black) that are not being used. After testing the fronts on my 2 channel Ultimate amp while experiencing no whining with the same RCAs, I would assume they are fine? Right?

Toddnaz, the chance of the rca cables being at fault is slim to none, same with the chance (but check anyhow) that they can the rca's by the power. More than likely it is your coustic amplifier that is built in singakoreatiawanapore. Not that this is bad but the power suplly's immunity to prevent noise is just not there. The scosche ES034 ground loop isolator may definitely help you out. If you are going to go the mile and get a new amplifier make sure it is built in the US, very, very few noise related problems here. Now most american built amplifiers have much larger power supplies (higher current) and to drive the MB Quart 's good and clean you can actually look at small as 50w x4 rms @ 12v from 20-20000hz. If you must look for a spec this is where you want to be, anybody's KRAFT built cheez machine can hit 100w x4 for power at 1000hz @16 volts. Now some manufacturers rate their power at 14.4, that's fine, knock of 20% of it's output approximately to hit 12 volt power output. What would I recommend... Eclipse PA5422, any Orion, Xtant, Soundtream (not Soundstorm), PPI and whole pile of others. Soundstream is a really old American amp company, not excessively big, has had financial problems in the past (now solved big time - these guys will be huge in 2 years) but build really really nice sound quality amplifiers, they would be my first choice if you can find a dealer, otherwise look at the Eclipse then Xtant.