Wiring a PA Horn to my CB - JeepForum.com

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post #1 of 21 Old 10-10-2009, 03:42 PM Thread Starter
tock172
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Wiring a PA Horn to my CB

Last week i ordered up a new CB with a PA function and a horn to go along with it. Unfortunately my horn did not come with a mini jack on it, it just has the typical red and black wires coming out of the back.

What would be the best way to go about wiring this? I have never dealt with speakers before, so details will help.

I can figure out that I want to somehow run the red wire and the black ground wire to a mini jack, but what is the proper way to do this? I have already tried using different wire connectors and nothing has worked except for holding the wires a mono version of this thing:




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post #2 of 21 Old 10-10-2009, 07:27 PM
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You can put a plug on the end similar to this:

1/8" Mini Mono Phone Plug - RadioShack.com




Or you could go this route, solder the wires
then heat shrink them.


6-Ft. Shielded Cable, 1/8" Plug to Stripped Wires - RadioShack.com

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post #3 of 21 Old 10-10-2009, 09:23 PM Thread Starter
tock172
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Quote:
Originally Posted by XJ99 View Post
You can put a plug on the end similar to this:

1/8" Mini Mono Phone Plug - RadioShack.com




Or you could go this route, solder the wires
then heat shrink them.


6-Ft. Shielded Cable, 1/8" Plug to Stripped Wires - RadioShack.com
I ended up soldering the speaker wire to small plugs, so I can easily remove it if needed. I also wire up 5 feet of wire from the speaker to my CB, and bought the right mini jacks, worked out great, extremely loud

I pretty much bought the jack you posted, but a bit cheaper

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post #4 of 21 Old 10-10-2009, 10:04 PM
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Did you get that PA horn from amazon?

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post #5 of 21 Old 10-10-2009, 10:22 PM Thread Starter
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Did you get that PA horn from amazon?
Yeah, the 40 watt one that is actually 30 watts. Still very loud though.

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post #6 of 21 Old 10-11-2009, 12:25 PM
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Cool deal, I'v got a small 10watt from slezebay its ok, but under the hood its hard to hear with the motor running.

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post #7 of 21 Old 11-12-2010, 09:41 PM
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hello i just hooked mine up the most confusing part well for me was finding a place to put it and i put mine under the antifreeze tank its unamplifed all you need is a speaker wire eight bucks and a 1/8 mono plug two bucks at radio shack the most confusing part is hooking the mono plug up thread the wires through the holes on each side(make sure the different wires do not touch each other) then same for other side turn on CB and test if does not work try the mono plug but switch the + -. if needed pics can be posted
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post #8 of 21 Old 11-20-2010, 08:54 PM
herculz
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those pa horns do you have to supply power to them? how if they only have red and black wire? ive picked up some before and with exhaust, radio and wind, sometimes you can't hear it. i want one loud like a police car pa.
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post #9 of 21 Old 05-17-2013, 09:42 PM
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I installed the RadioShack PA horn to a uniden Pro520 XL and I can barely hear it when turned all the way up?
Could I have soldered the 1/8" mono on wrong? Does it make a difference which wire is on which terminal?

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post #10 of 21 Old 05-18-2013, 10:26 AM
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Quote:
Originally Posted by DrSizzle View Post
I installed the RadioShack PA horn to a uniden Pro520 XL and I can barely hear it when turned all the way up?
Could I have soldered the 1/8" mono on wrong? Does it make a difference which wire is on which terminal?
Depends on the wattage of the horn. They recommend a
8 Ohm 7-Watt PA speaker.

Don't expect much from a CB PA. If you want to be loud,
you need a real PA system.

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post #11 of 21 Old 05-18-2013, 10:35 AM
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I have the same CB and what I did is use a cable that converts from 3.5mm to the red/white RCA jacks. Then I used another RCA cable and cut the ends off of one end. I soldered those to the PA wires, and I used a female/female RCA adapter to couple the red/white RCA's together. I used a SPECO 6" Aluminum horn because it had the highest sensitivity I could find, which means it can get louder. And it is plenty loud.

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post #12 of 21 Old 05-18-2013, 10:49 AM
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Quote:
Originally Posted by XJ99 View Post
Don't expect much from a CB PA. If you want to be loud, You need a real PA system.

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post #13 of 21 Old 05-18-2013, 12:06 PM
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Quote:
Originally Posted by Anticanman View Post


Funny, I was actually thinking about that.

Like sjones says, you need to find one with
the highest sensitivity to get most from a CB
PA. They also make amplified horns, but I have
no experience using one.


My Dad had one of these mounted on the boat
back in the 80's, and it was loud as hell.

http://www.ebay.com/itm/Realistic-MP...item5d3f1af107

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post #14 of 21 Old 05-22-2013, 12:02 PM
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If you want loud you'll need to source an old police siren, search for whelen or federal signal on craigslist.

I have two speakers on my M1009, one there in the grille and one over the lightbar, that are fed 100 watts each from the siren. Just keep it in Air Horn and don't use the siren tones. The PA is very loud. EDIT to add: the PA has a volume knob so you don't deafen your friends who are spotting you.


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post #15 of 21 Old 05-22-2013, 12:25 PM
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You don't need a Police siren to be loud. It's all about horn choice. As I said earlier, I use the same CB as the OP and my PA is very loud because of the horn I chose. The whole idea is to use what he already has.

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