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microcontroler into 700 kicker amp

Discussion in 'Microcontrollers' started by Joe G, Jul 1, 2018.

  1. Joe G

    Joe G Member

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    I was kicking around with a idea of running a pic into an amp to run a piezo for an alarm system, don't know much about automobile amps at all, I got the zx700.5 kicker amp and was pondering how to hook up the pic's pwm into the inputs, and how to connect a set of KSN 1001A piezo,s or similar tweeters?
     
  2. dr pepper

    dr pepper Well-Known Member Most Helpful Member

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    If its a line input just divide the voltage down to 1v or so with a pair of resistors, and use say a 10uf decoupling cap in series.
    You might also need some kind of load resistor, piezo tweeters like the ksn have a weird impedance curve, some amps may become instable with just the tweeter as a load.
     
  3. Joe G

    Joe G Member

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    thanks Dr Pepper, I got the pwm to run great in the amp, waiting on the piezos to come in. and yes , I'll be using a resistor before the piezo, The regular tweeters worked awesome but not water proof.,lol
     
  4. dave miyares

    Dave New Member

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  5. dr pepper

    dr pepper Well-Known Member Most Helpful Member

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    I was thinking more of a resistor & cap impedance equalizer for the amps protection rather than the piezo.
    If your electrically minded you could ditch the amp, drive the piezo with a fet & put a choke across the piezo to boost the voltage & power.
     
  6. Joe G

    Joe G Member

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    I originally wanted to use a pic to feed an h-bridge to feed the 1-18 step-up transformer to power the piezo, initialized by a motion sensor, but the amp was a free-be to use for now. and was having a hard time scavenging a transformer. I wanted a mobile alarm for camping and such to attempt to deter critters from my supplies....
     

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