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Fixing external speaker pop
- Thread starter Mudfoot
- Start date
I got an SGC and West Mountain DSP speakers. I can't use either one on my CB's or exports, darn popping is so loud, drives me nuts.
Sounds like RF getting in. Is the speaker wire shielded? I had speaker problems with RF with a stereo system, and replaced the 2-conductor speaker wire with shielded microphone wire, (shield with one conductor). Not exactly the same problem, but the RF may be affecting an OP Amp within. Just a thought.
Mark -
This link from Texas Instruments discusses the causes of powered-speaker pops, and gives solutions to eliminate them if a specific TI amp chip is being used. At least it will give you some insight into what causes the problem. Good luck and 73s.
-399
http://www.ti.com/lit/an/sloa108/sloa108.pdf
This link from Texas Instruments discusses the causes of powered-speaker pops, and gives solutions to eliminate them if a specific TI amp chip is being used. At least it will give you some insight into what causes the problem. Good luck and 73s.
-399
http://www.ti.com/lit/an/sloa108/sloa108.pdf
I ran into this on a speaker I have and was able to cut it way down by putting a cap across the + and - leads of the speaker. I tried different values untill the pop died out. forget just which one used but I know I tried 3 different ones. 220uf electro a 470uf and a 1000uf cap and one of them helped cut it way down. even made some of the hiss and static go way down. this was originally a PA speaker I used. helped filter out a lot of noise. not sure if this will help but worth a try if you can get to the plus and minus wires right at the speaker.
Mark -
you might want to give something like this a try.
1. Install this in your speaker(s).
2. Then build this.
You will also need to build a mike plug to mike jack adapter(s) to connect to the xmit lead in your various radios.
OPERATION:
When the relay unit is unplugged, the spkr functions normally. When the relay is connected, the spkr output runs thru the relay contacts. At keyup, the relay coil is connected to ground actuating the circuit, but the R1/C1 combo delays the relay turn-on long enough to shunt the pop to ground.
This is a good afternoon project. 73s.
- 399
you might want to give something like this a try.
1. Install this in your speaker(s).
2. Then build this.
You will also need to build a mike plug to mike jack adapter(s) to connect to the xmit lead in your various radios.
OPERATION:
When the relay unit is unplugged, the spkr functions normally. When the relay is connected, the spkr output runs thru the relay contacts. At keyup, the relay coil is connected to ground actuating the circuit, but the R1/C1 combo delays the relay turn-on long enough to shunt the pop to ground.
This is a good afternoon project. 73s.
- 399
