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Teamrf 
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Posted: March 22, 2005 at 11:04 PM / IP Logged  
I have 2awg wire to my dist. block then split off to two different amps both taking 4awg wire. When I cut the music up the 4 channel amp clips, and shuts down. Is it too much current running causing it to clip?
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oonikfraleyoo 
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Posted: March 22, 2005 at 11:23 PM / IP Logged  
Is your gain set correctly?
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Teamrf 
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Posted: March 23, 2005 at 7:45 AM / IP Logged  
Yes they are only half way up.
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ss-installer 
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Posted: March 23, 2005 at 7:46 AM / IP Logged  
ohm loads right?
DYohn 
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Posted: March 23, 2005 at 8:24 AM / IP Logged  

Teamrf wrote:
Yes they are only half way up.

That means nothing.  Did you adjust the input gain to match the output of the head unit?

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boricuaso 
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Posted: March 23, 2005 at 8:46 AM / IP Logged  

cliping also happens when your electricalsystem" alternator " is not power full enogh for your system, make sure your not having problems with your battery cus it might be sucking a too large of a charging load from the alternator and limiting the spare current for your system!. are your lights diming out ? make sure your ground wires are short, add a cap, and use the shortes power cable you can!, make sure all your power line connections are clean and firm, an match your gain to your head unit low output.

some times when you push your amp to its limits @ a low Ohms load,  it will clip!!.

DYohn 
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Posted: March 23, 2005 at 10:47 AM / IP Logged  

boricuaso wrote:
cliping also happens when your electricalsystem" alternator " is not power full enogh for your system, make sure your not having problems with your battery cus it might be sucking a too large of a charging load from the alternator and limiting the spare current for your system!. are your lights diming out ? make sure your ground wires are short, and use the shortes power cable you can!, make sure all your power line connections are clean and firm, an match your gain to your head unit low output.

Actually nothing you can do to the input power side of an amplifier will cause it to clip.  Clipping is a very specific condition and is determined by the signal strength, not the power.  Other issues will happen with amplifiers fed unstable or too low (or high) voltage, but not clipping.

I suspect the original poster is not using the term correctly either.  If the amplifier is clipping (especially severely) you will hear it as distortion.  Often an amplifier will clip just before it shuts down on overload, but clipping unto itself will not shut down an amplifier unless it has a very sophisiticated clipping detection circuit built into it.  If the amplifier is shutting down, then either the impedence load is too low, the input gain is too high, or the input power supply voltage is too low.

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boricuaso 
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Posted: March 23, 2005 at 12:31 PM / IP Logged  
DYohn wrote:

boricuaso wrote:
cliping also happens when your electricalsystem" alternator " is not power full enogh for your system, make sure your not having problems with your battery cus it might be sucking a too large of a charging load from the alternator and limiting the spare current for your system!. are your lights diming out ? make sure your ground wires are short, and use the shortes power cable you can!, make sure all your power line connections are clean and firm, an match your gain to your head unit low output.

Actually nothing you can do to the input power side of an amplifier will cause it to clip.  Clipping is a very specific condition and is determined by the signal strength, not the power.  Other issues will happen with amplifiers fed unstable or too low (or high) voltage, but not clipping.

when his amplifier is not geting the right voltage not above 12v but below the requierements of the amp, alot of amp will still play and fuction and not correct the output "amplified" sinewave to the speakers, so the signal goes in properly but when it gets amplified inside the amp, the output signal is not going to be a perfectly amplified version of the input signal" when at high volume output" so the amplifier will actualy create a flat top sinewave instead of a clean sinewave,

thats why i asked, if he has problems with with charging system!!! and asked him to make sure that the conections where clean an secure cus gunked up power connections limit the power going in to the amp and create erradical and unstable power supply issues inside the amp.

kfr01 
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Posted: March 23, 2005 at 1:28 PM / IP Logged  

Teamrf wrote:
Yes they are only half way up.

It blows my mind that more people can't understand the concept of gain. 

The gain control is NOT a bass volume control!

See the gain tutorial here:  http://www.jlaudio.com/tutorials/

Also do some searches for gain on this forum, there are different methods of setting gain, but that tutorial should give you a good overview of the concept. 

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Chad7n7 
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Posted: March 23, 2005 at 10:09 PM / IP Logged  
 
boricuaso wrote:

when his amplifier is not geting the right voltage not above 12v but below the requierements of the amp, alot of amp will still play and fuction and not correct the output "amplified" sinewave to the speakers, so the signal goes in properly but when it gets amplified inside the amp, the output signal is not going to be a perfectly amplified version of the input signal" when at high volume output" so the amplifier will actualy create a flat top sinewave instead of a clean sinewave,

thats why i asked, if he has problems with with charging system!!! and asked him to make sure that the conections where clean an secure cus gunked up power connections limit the power going in to the amp and create erradical and unstable power supply issues inside the amp.

Alot of misinformation, power issues will not cause an amplifier to clip. If the power an amplifier is seeing drops below the designed working voltage, the amplifier will shut off and go into protection mode. It will not "change" its ability to reproduce certain frequencies. 

Clipping - Audible distortion that occurs when continuous power-to-peak power capabilities (headroom) are exceeded. "Turn it down!"
Clipping -- posted image.

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