For my car I have a Siren/PA system and what I'd like to do is make it so I can plug my iPod into it. In some attempts I've been using the Microphone and splicing an Aux cord onto the leads for the microphone so when i press the button on the mic it goes to the AUX cord. This semi works but it sounds awful. I tried to do this last year but all i could find was something about how the signal from the Microphone would be a lot different than the signal from the Aux and that i needed to put something in the circuit to change how the aux signal is sent. I really have no clue, but if anyone could give me some advice for hooking the Aux to the mic input that would be great. I had some pictures of the inside of the PA system but I just had to put a new HD in my comp so I no longer have them. I'll have to rip the PA system out of my car tomorrow when its light out.
Heres a rough schematic of what I'm trying to do.
http://zyphox.com/Mic.png
But i remember someone saying i need to convert the aux signal or change the resistance or something. I can wire that up fine, as ive done it already, just didnt sound great. Though i just took the aux leads and placed the inside the Mic casing so it was still running the mic when i pressed the button. Ill have to try actually sniping the wires and just goin with it. Any suggestions on sound quality improvements would be great though. Like the sirens that get the sound file directly from the system sounds great. Want music to sound like that as well instead of just holding a speaker up to the microphone. I also want to just wire this all into my stereo so i can change tracks from my head unit and not have to deal with doing it from my ipod directly.
**EDIT** I did a little more searching found this:
Heres a rough schematic of what I'm trying to do.
http://zyphox.com/Mic.png
But i remember someone saying i need to convert the aux signal or change the resistance or something. I can wire that up fine, as ive done it already, just didnt sound great. Though i just took the aux leads and placed the inside the Mic casing so it was still running the mic when i pressed the button. Ill have to try actually sniping the wires and just goin with it. Any suggestions on sound quality improvements would be great though. Like the sirens that get the sound file directly from the system sounds great. Want music to sound like that as well instead of just holding a speaker up to the microphone. I also want to just wire this all into my stereo so i can change tracks from my head unit and not have to deal with doing it from my ipod directly.
**EDIT** I did a little more searching found this:
But this is mic to aux, i need aux to mic. But at least now ik that the mic is a low signal which is what i was trying to remember from last year.The output from a microphone is generally to low a signal to work in an "Aux" input. The latter is referred to as "line level", about 1 volt, whereas the microphone may be 1/10th that.
You need a microphone pre-amp to do it.
You can make one out of an operational amplifier if you can handle a soldering iron, about 6 parts and a battery (or two) for power.
Otherwise, you'll have to arrange for one somehow.
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