Go Back   Jeep Garage - Jeep Forum > Jeep Platform Discussion > Grand Cherokee - WK > Audio/Visual/Navigation

Join Jeep Garage Today
Reply
 
Thread Tools Display Modes
 
  #1  
Old 07-31-2014, 11:19 AM
New Member
 
Join Date: Feb 2014
Posts: 1
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
08GC21 is on a distinguished road
Subwoofer Help

I'm hoping some of you guys will be able to help with the issue I'm having..

I'm trying to install a powered sub in the back of my 08 Grand Cherokee. It has the Boston Acoustics premium audio system with the in-dash 6 disc changer. I used a line out converter behind the radio to allow for RCA inputs. I got the sub hooked up and everything works, however, if I turn the volume down on the radio, the sub does not turn down. i.e. if the volume radio is on 1.. the sub will still be playing at a standard volume.

How can I remedy this? Has anyone ran into a similar problem? I've installed several systems in the past and have not run into this..

Thanks!
__________________

__________________
Reply With Quote
  #2  
Old 07-31-2014, 02:27 PM
Member
My Jeep: 2005 5.7L WK
 
Join Date: Jul 2010
Location: Kingston, Ontario
Posts: 803
Thanks: 0
Thanked 15 Times in 14 Posts
Rep Power: 276907
dr.lee.baugh has a reputation beyond reputedr.lee.baugh has a reputation beyond reputedr.lee.baugh has a reputation beyond reputedr.lee.baugh has a reputation beyond reputedr.lee.baugh has a reputation beyond reputedr.lee.baugh has a reputation beyond reputedr.lee.baugh has a reputation beyond reputedr.lee.baugh has a reputation beyond reputedr.lee.baugh has a reputation beyond reputedr.lee.baugh has a reputation beyond reputedr.lee.baugh has a reputation beyond repute
Re: Subwoofer Help

I am sure someone with more experience will add to this, but I believe volume control with the factory HU is done through the canbus system. You may have an easier time swapping out the head unit as well.


Sent from my iPod touch using JeepGarage
__________________

__________________
Reply With Quote
  #3  
Old 08-02-2014, 08:56 PM
jravey's Avatar
Member
 
Join Date: Dec 2013
Posts: 14
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 284
jravey is on a distinguished road
Re: Subwoofer Help

You would be better off putting the LOC after the Boston amp, then you will have control over the volume.
__________________
When someone shares something of value with you and you benefit from it, you have a moral obligation to share it with others
Reply With Quote
  #4  
Old 08-13-2014, 09:20 AM
brentwoodkris's Avatar
The Ever-Dissatisfied Tinkerer
My Jeep: 2005 5.7L WK
 
Join Date: Jan 2010
Location: Columbia, MO
Posts: 961
Thanks: 3
Thanked 17 Times in 17 Posts
Rep Power: 3656
brentwoodkris has a reputation beyond reputebrentwoodkris has a reputation beyond reputebrentwoodkris has a reputation beyond reputebrentwoodkris has a reputation beyond reputebrentwoodkris has a reputation beyond reputebrentwoodkris has a reputation beyond reputebrentwoodkris has a reputation beyond reputebrentwoodkris has a reputation beyond reputebrentwoodkris has a reputation beyond reputebrentwoodkris has a reputation beyond reputebrentwoodkris has a reputation beyond repute
Garage
Re: Subwoofer Help

Quote:
Originally Posted by jravey View Post
You would be better off putting the LOC after the Boston amp, then you will have control over the volume.
This is true and the easiest way to go. Not only is the cabling to the amp much shorter and easier this way, but it makes more sense if you understand the CANBUS system.

The only signals coming off the back of the headunit are CANBUS, which are all sent to the factory BA amp behind the left rear quarter panel. If you check on WKJeeps pinout diagram (see the amp section), you'll see that the CANBUS signals are brought in by the BA amp and then sent out through the outputs as standard speaker level outputs.

If you tap into the speaker level outputs (definitely do the rear speaker output as it's full-range output w/o any factory crossover - unlike the front and dash speakers), it will allow you to use the factory sound levels (as the BA amp will control the volume somewhat).

Reply back if you have any other questions.
__________________
'05 WK GC 5.7L HEMI, Goodyear Wrangler SilentArmors, Monroe Reflex Front Struts/Monroe Load Adjusting Rear Shocks, EBC Drilled/Slotted Sport Rotors, Wagner Ceramic Brake Pads, Taylor Shorties, SRT8 Stock CAI Conversion, K&N Drop-in, Block Heater, 18.5% Tint All Around, Boston SE Speakers, 12" Alpine Type-R Sub w/ sealed box w/ RF PRIME R1000-1D, ScanGauge II w/ windshield mount, BT Catch Can w/custom bracket, Swagman Fork Mount Bicycle Rack, WeatherTech front floor liners, SRT8 Pedal Covers, eBay full LED lighting kit, Custom MDS Indicator LED Light, Mega Raizin Voltage Stabilizer & Grounding Kit, Challenger IAT Sensor, Escort Passport 9500ix, Python 5706P RS/Security/KE w/ extras, SA 5 switch panel, Fumoto Oil Valve, Overland WG Steering wheel.
Reply With Quote
Reply

Thread Tools
Display Modes

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 Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Recent Jl subwoofer install mandan007 Audio, Video, Navigation & Electronic Modifications 19 07-12-2013 04:09 PM
Best wiring for my subwoofer?? Help TylerShark Audio/Visual/Navigation 8 03-08-2012 12:29 PM
Subwoofer Help..... Dusan33 Audio/Visual/Navigation 0 01-19-2011 02:32 PM
Subwoofer question.. AcidCold Audio, Video, Navigation & Electronic Modifications 5 07-26-2009 07:01 PM
Subwoofer Question jkram Audio, Video, Navigation & Electronic Modifications 17 07-02-2009 05:18 PM

Powered by vBadvanced CMPS v3.2.3

All times are GMT -5. The time now is 04:56 PM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Copyright 2012 - JeepGarage.Org
The Jeep Grand Cherokee Owners Community