Recommendations on PA Horn for CB - Jeep Wrangler Forum
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > General Jeep Discussions > Communications and Electronics

Join Wrangler Forum Today

Thread Tools

Please support our sponsors and let them know you heard about them on
Old 04-24-2016, 10:20 AM
Thread Starter
Join Date: Jun 2015
Posts: 93
Recommendations on PA Horn for CB

Looking for Recommendations for a PA horn for a CB ( Cobra 29LX )

rwolfe88 is offline   Quote
Old 04-25-2016, 11:57 AM   #2
Knows a couple things...

WF Supporting Member
Jerry Bransford's Avatar
Join Date: Nov 2005
Location: Escondido, Calif.
Posts: 48,379
The key is to get a PA speaker whose power/wattage requirements match your CB's PA output jack's power output ability. So if you plug in a 100 watt cop car PA speaker into your Cobra's PA jack, you'd be lucky to hear anything at all since that Jack is lucky to put out 3-4 watts. Get a PA speaker designed to work with low power and you'll have the most volume out of it. Go for a PA speaker made for CBs like from Cobra, Uniden, Midland, or perhaps an MFJ communications speaker like ham shops carry. They're designed to put out decent volume with not much power. Don't expect too much though, they're not going to be a useful as a serious PA... there's just not enough wattage available from the CB's PA speaker jack for that.

I plugged a PA speaker into my CB years ago that was a good match power-wise for it but the volume available was still pretty much a joke so I ended up removing it. There's not much need for a PA on a Jeep anyway.

When you have a choice, buy American.
Jerry Bransford is offline   Quote
Old 04-28-2016, 11:50 PM   #3
unusedusername's Avatar
Join Date: Mar 2013
Location: San Mateo, California (Near SF)
Posts: 1,048
I put a flat style speaker rated for 300 watts behind the grill.

It was nowhere near loud enough and also had significant distortion on the low end of the voice frequencies.

I put a really cheap subwoofer mono amp between the cb and the speaker and also put a RCA high pass filters at 150hz on the input to the amp.

Now it works really well. It's "loud loud", but it isn't "cop car loud". Since I use it to communicate with people on trails it does not need to be that loud.

My parts list is in my garage profile.
unusedusername 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 02:30 AM.

Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2019, 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 © 2019 DragonByte Technologies Ltd.
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.

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