2008 Cobalt LT - Chevy Cobalt Forum / Cobalt Reviews / Cobalt SS / Cobalt Parts
Audio/Video Talk about Chevy Cobalt Audio/Video and other mobile electronics here

LinkBack Thread Tools Display Modes
post #1 of 8 (permalink) Old 05-17-2009, 11:09 PM Thread Starter
Join Date: May 2009
Posts: 2
2008 Cobalt LT

Whats up guys. Just found this site today and well seems pretty active

Thank GOD!

OK so I bought a set of speakers and tweeters with an amp and 2 10" subs. It's a Kenwood system, minus back 2 speakers and an aftermarket head unit. So my buddy and I hooked everything up to the stock radio. Used 2 line converters spliced into the front factory speaker wires to amp and the back line converter spliced into the rear speakers into the amp. ( yes i know im buying another amp to run them both separately ) It sounds great but one of my other friends noticed that one sub is turned off O.o thats a punch in the face lol. So i tinkered around with the amp and got them both working BUT dun dun dun... it sound 100X better with only one O.o/ ( must be the speaker and sub connected into same amp?) ive still yet to purchase an aftermarket deck + 2 rear speakers which brings me to this-- i need a wiring harness, where hown and how much can i get one for my vehicle?

system specs:
speakers+tweets - Kenwood Excelon XR-S17P
Amp - Kenwood Excelon 4-chan amp X600F
Subs - very similar to these: Kenwood - KFC-W2512

If you need more info just tell me and ill give it to ya ;)


craziekev is offline  
Sponsored Links
post #2 of 8 (permalink) Old 05-17-2009, 11:39 PM
YLW_Revolution's Avatar
Join Date: Sep 2008
Location: OH-IO
Posts: 276
welcome to YC.C

2004 Mustang GT Vert 40th Anniversary Edition Black/Black/Black

Short Throw
Pioneer FH-P8000B Head Unit
Cobra Spoiler
Mach 1 Grill delete
Mach 1 Chin Spoiler
Functional Hood Scoop
Black Housed Headlights
5% window tint all around
YLW_Revolution is offline  
post #3 of 8 (permalink) Old 05-18-2009, 08:31 AM
Cobalt Specialist

Gooty's Avatar
Join Date: Apr 2009
Posts: 1,219
i hate to be a bad guy but for some reason gm put some brains of the car into the stock head unit like your door and blinker chimes so if you want anyone who installs aftermarket head units to work on it you need a cable that will replace the brain so you will have door chimes and other things. The cable can be easily found by typing in gm interface for gm in google or yahoo.PAC is the company who makes them the price ranges for like the lowest i saw was $79 to a hundred

Gooty is offline  
post #4 of 8 (permalink) Old 05-18-2009, 10:03 AM
Join Date: Mar 2009
Posts: 10
Do all cobalts have this? I have a 06 LS and am just about to have my deck replaced and futureshop told me it would be fine because I have the 2 buttons (that show mileage/avg speed...etc) between the deck and steering wheel.

Thanks in advance for any imput.

Last edited by leafman; 05-18-2009 at 10:22 AM.
leafman is offline  
post #5 of 8 (permalink) Old 05-18-2009, 10:10 AM
Cobalt Specialist

Gooty's Avatar
Join Date: Apr 2009
Posts: 1,219
i have a 08 cobalt ls and i was told it was necessary for the door chimes and other chimes in the car and that best buy would not install the deck unless i had the cable
Gooty is offline  
post #6 of 8 (permalink) Old 05-18-2009, 10:17 AM
Staff AlumniDedicated

OBZ's Avatar
Join Date: May 2006
Location: S.L.C. UT.
Posts: 3,006

"A wise man speaks because he has something to say,
A fool speaks because he has to say something"
OBZ's showoff thread!
OBZ is offline  
post #7 of 8 (permalink) Old 05-18-2009, 01:38 PM
Join Date: May 2009
Posts: 18
If it sounds better with one sub speaker rather than two, it could be you have them out of phase. Have you tried swapping pos\neg on on of the speakers?
JeffBowser is offline  
post #8 of 8 (permalink) Old 05-20-2009, 09:24 AM
Join Date: Mar 2009
Posts: 10
I went in to the dealership and they told me all Cobalts and the majority of GM's need the special bypass. This really pisses me off as to why GM would wire (or whatever you call it) their cars this way as I haven't heard of any other car makers doing this. Now an extra 100 bucks for the special harness, 160 if I had onstar. Getting to be sorry I bought a GM. Anyway, a vent post I guess. This deck better sound great...lol.
leafman is offline  
Sponsored Links
Closed Thread

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode

Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome