2014 JK Sport sub issues. Help! - Jeep Wrangler Forum
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > JK Jeep Wrangler Forum > JK Tech Forum

Join Wrangler Forum Today

Thread Tools

Please support our sponsors and let them know you heard about them on WranglerForum.com
Old 12-04-2014, 05:53 PM
Thread Starter
Join Date: Dec 2014
Posts: 2
2014 JK Sport sub issues. Help!

I have a 2014 4 door sport. I don't know squat about stereos or subs. I had the crappy stock radio so I bought the RES version on ebay. Not much better. Anyway, originally my jeep didn't have a sub. I bought a stock sub from a friend. The wiring was in place so we hooked it up. We can't get any sound from the sub even with the new stock head. The dealership said I need an amp to run the sub. After reading other posts, some suggest I need to tap into the front speakers. Any suggestions? Thanks

dondog is offline   Quote
Old 12-04-2014, 11:33 PM   #2
7ekken's Avatar
Join Date: Feb 2012
Location: Carolinas
Posts: 248
assuming you did not have a factory subwoofer from the start, the dealer is correct... you need an amplifier. if you just wire the subwoofer into the stock front wiring.. 2 things could happen.

1 you are going to drop or raise the resistance on the stock head unit (depending on how it is wired in) which can lead to failure of the stock radio's internal power unit if it is not able to handle a 2 or 8 ohm load resistance.


2 assuming it actually works without causing a premature failure, (which may not happen for quite a while, if at all) you will get full range sound (vocals and all) at a level marginally different than the rest of the speakers in the system without adding some sort of crossover to allow just bass frequencies through.

the woofer you are adding wants more power than the stock radio can deliver. enter the amplifier. the stock amplifier that comes in the "premium audio" equipped jeeps amplifies all of the speakers and the woofer in the rear. it also has an internal crossover to only allow bass frequencies to be delivered to the subwoofer.

instead of going the factory amplifier route which would require more changes than just adding the amplifier... you could find a small low powered mono or 2 channel amplifier with a built in low pass crossover and have that installed to run just the rear woofer. i am unsure of the factory woofers ohm specs i just remember it being a dual voice coil design and i am also not able to provide the factory amplifiers power output to the factory woofer.

good luck... hopefully some others will chime in and help you out with some options.
2013 JKU Sport Gecko 3.73Auto, Premium Soft Top, Rubi Rails, Ace Rails
7ekken is offline   Quote

Thread Tools

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

All times are GMT -5. The time now is 12:26 PM.

Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2020, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.1
User Alert System provided by Advanced User Tagging v3.1.0 (Pro) - vBulletin Mods & Addons Copyright © 2020 DragonByte Technologies Ltd.
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2020 DragonByte Technologies Ltd.

Jeep®, Wrangler, Liberty, Wagoneer, Cherokee, Gladiator, Mopar and Grand Cherokee are copyrighted and trademarked to FCA US LLC.
Wranglerforum.com is not in any way associated with FCA US LLC.