subs hit randomly
ok, when i turn my car on,after like 2 seconds my subs will go BOOM! even though no music is playing, this is only when i turn on the car. is this normal? somtimes it scares the crap out of me
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Sorry, been a long day:
http://www.crutchfield.com/S-c0t3bBS...ech/kb327.html
http://www.crutchfield.com/S-c0t3bBS...ech/kb327.html
That circuit wont help with turn "ON" pop though.
It sure will, it allows some more time for a signal to get from the head unit to the amp, the reason he's having a loud pop on turn on is the amp has no signal hitting it.
When you apply power to the ACC side it supplies power to both the capacitor and transistor at the same time. Which then switches the Relay "ON" at exactly the same time you supplied power to the ACC wire.
That circuit is only a delay for shutting down an amp not turning it on.
Sorry it wont. That circuit is for turn "OFF" pop. When power is removed from the ACC side the capacitor supplies power to the transistor to keep it "ON" until the charge is removed from the capacitor and then the transistor switches "OFF". Which then switches the relay off.
When you apply power to the ACC side it supplies power to both the capacitor and transistor at the same time. Which then switches the Relay "ON" at exactly the same time you supplied power to the ACC wire.
That circuit is only a delay for shutting down an amp not turning it on.
When you apply power to the ACC side it supplies power to both the capacitor and transistor at the same time. Which then switches the Relay "ON" at exactly the same time you supplied power to the ACC wire.
That circuit is only a delay for shutting down an amp not turning it on.
Read the Crutchfield article its for on or off and what you said makes no sense, caps stay charged all the time until there discharged on the acc side(which usually takes a circuit), its why even after years of sitting in a closet you can hook up an amp and have it spark or discharge the second you apply ground.I guess we used them in vain then. Well to the OP spend more money and buy a new amp.
In reverse when the ACC is applied it is applied to the capacitor and the Base at exactly the same time. Thus resulting in no turn on delay. I think if you reread that article a little more carefully you will see it was intended for turn off delay only.
I don't need to read the article to know what that circuit does. In order for you to understand that circuit you need to understand how a transistor works. A transistor acts like a switch. You provide a small amount of current through the base to collector and it turns "ON" a larger current from collector to emitter. The capacitor stores a charge such that when the ACC is removed the capacitor will provide the current through the Base to Collector until it is drained. When the capcitor drains it can no longer supply current through the Base to Collector so the current through the Collector to Emitter also shuts off. When that happens the relay shuts off. This action is where you get your delay from.
In reverse when the ACC is applied it is applied to the capacitor and the Base at exactly the same time. Thus resulting in no turn on delay. I think if you reread that article a little more carefully you will see it was intended for turn off delay only.
In reverse when the ACC is applied it is applied to the capacitor and the Base at exactly the same time. Thus resulting in no turn on delay. I think if you reread that article a little more carefully you will see it was intended for turn off delay only.
Believe what you want I guess.
And pigs can fly 
Lets quote the important parts of that article.
Usually adding a slight turn-off delay to the processor in question can solve this problem. This added delay allows the processor to remain on until the amplifier has powered down, thus preventing the pop.
Experimenting with the capacitor value will give you the right amount of delay before the EQ shuts off.
No where in that article does it state changing the cap will change turn on times.
The only turn-on delay you will get from that circuit is the time it takes the relay to flip contacts which is a few milliseconds.
Ok this is boring now. Have fun with your magic circuits.

Lets quote the important parts of that article.
Usually adding a slight turn-off delay to the processor in question can solve this problem. This added delay allows the processor to remain on until the amplifier has powered down, thus preventing the pop.
Experimenting with the capacitor value will give you the right amount of delay before the EQ shuts off.
No where in that article does it state changing the cap will change turn on times.
The only turn-on delay you will get from that circuit is the time it takes the relay to flip contacts which is a few milliseconds.
Ok this is boring now. Have fun with your magic circuits.
Last edited by nsxxtreme; May 11, 2011 at 09:24 AM.
And pigs can fly 
Lets quote the important parts of that article.
Usually adding a slight turn-off delay to the processor in question can solve this problem. This added delay allows the processor to remain on until the amplifier has powered down, thus preventing the pop.
Experimenting with the capacitor value will give you the right amount of delay before the EQ shuts off.
No where in that article does it state changing the cap will change turn on times.
The only turn-on delay you will get from that circuit is the time it takes the relay to flip contacts which is a few milliseconds.
Ok this is boring now. Have fun with your magic circuits.

Lets quote the important parts of that article.
Usually adding a slight turn-off delay to the processor in question can solve this problem. This added delay allows the processor to remain on until the amplifier has powered down, thus preventing the pop.
Experimenting with the capacitor value will give you the right amount of delay before the EQ shuts off.
No where in that article does it state changing the cap will change turn on times.
The only turn-on delay you will get from that circuit is the time it takes the relay to flip contacts which is a few milliseconds.
Ok this is boring now. Have fun with your magic circuits.
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