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Speakers pop when turning stere off

Old Aug 26, 2006 | 08:12 AM
  #1  
Zeppelin340's Avatar
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Speakers pop when turning stere off

I currently have a JVC HU and stock speakers, everytime i turn the HU off my speakers pop. How can i fix this?

I looked through the stickies and found this (skip to the bottom if you don't wanna read it or already know what it says):

2.2 My system "pops" when I turn it off. What is happening and how
can I get rid of it? [JD]
================================================== ===================

This kind of problem is often caused by transients in the signal
processor as it powers down finding their way into the signal path,
which the amplifier then transmits to the speakers.

Usually this can be solved by adding a little turn-off delay to the
processor. This allows the processor to stay powered on for a short
time after the amplifiers have powered down, thus preventing the pop.

Many components sold today (such as crossovers, equalizers, etc) have
delays built-in. Read your manual to see if it is possible to set this
delay on your piece of equipment or be sure to look for this feature
during your next car audio purchase.

If your processor does not have this feature, you can build your own
delay circuit with a diode and a capacitor. Add a 1N4004 diode in
series with the processor's turn-on lead, striped side towards the EQ.
Then add a capacitor in parallel, the (+) side of the cap connects to
the striped (processor) side of the diode, the (-) side of the cap goes
to ground (not the radio or EQ chassis - connect to the car chassis).

Experimenting with the cap value will give you the right amount of delay
before the EQ shuts off. You don't want it too long, just long enough to
make sure the amp is off before the EQ powers down. 220 - 1000 uF is
about right, and make sure the cap is a polarized electrolytic, 16V or
higher. Also keep in mind that the diode will introduce a 0.7V drop on
the remote wire, which can cause the processor to power down before the
rest of the system.


It says something about building a delay. I have no idea what any of that means, can someone explain how to do this?
Old Aug 26, 2006 | 01:49 PM
  #2  
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My 2 12's pop when I turn the radio off. I don't really care anything about fixing it. I think it's funny to see one of my friends turn off the radio and then almost pee in their pants when the loud pop gets them by suprise.
Old Aug 26, 2006 | 03:24 PM
  #3  
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aftermarket hu and no amp or processing, correct?
Old Aug 27, 2006 | 11:55 AM
  #4  
Zeppelin340's Avatar
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Correct. JVC HU, and stock Bose speakers. I'll get swapping them out soon though.
Old Aug 28, 2006 | 10:07 AM
  #5  
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its the unit. my old JVC Arsenal did the same thing, get a new unit immediately
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