Question about Nakamichi PA-506 Car Audio Amplifier

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I have a Nakamichi PA 506 Amplifier that goes into protective mode about 50% of the time. Temp and previous playtime seem to have no effect. Sometimes if I cycle the key a few times it will power up. Any suggestions?

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6ya6ya
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Posted on Jan 02, 2017

SOURCE: reciever get louder in one channel then static then goes back to normal

HAI,IT'S A SMALL PROBLEM ANY DRY SOLD INLEFT AUDIO SECTION

Posted on Jun 26, 2008

  • 5 Answers

SOURCE: My mother's Nakamichi soundspace5's right speaker

Hi there, do you still need a replacement speaker? I have one

Posted on Aug 23, 2010

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hi,
You have to check the ohms of the speakers all spekers should be 8 Ohms or above. if not it will overload the amplifier at high level. The minium ohms impedence of the amplifier is 4 ohms. If you connect two 8 ohms speakers together then the effective ohms will be 4 OHMS then the amp will handle the speakers. If you connect two 4 ohms spekers together then the effective ohms will be 2 Ohms, this will overload the amplifier. You will be able to connect two 8 ohms speaker to left channel or right channel of the amplifier. Check the speaker spesifiction to know its ohms. Make sure all the speakers have an impedence of 8 OHMS or above
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Hi,
Is the protect light in your amplifier turns on when it shuts down? If yes, then your amplifier lacks voltage. The reason why it goes on protect mode is, the amplifier is needing an amount of voltage from your car, since your car cannot provide that amount of voltage your amplifier is not getting anything, instead of getting voltage to produce watts its getting minimum voltage & producing heat, to save itself it goes on protect mode so the incoming power shuts off & cools the amplifier.
Example:
Your on vol 40, amplifier is working fine, when you turn it up to vol 50 your amplifier shuts of, then you put it back to vol 40 & your amplifier turns back on.
At vol 40 your voltage is 12v or above. but in vol 50 your voltage drops to 11 & below.

Check your battery or alternator if they are giving enough voltage


Hope this helps your inquiry. Have a blessed weekend.

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