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Re: Amps with clip indicators that fire at 3dB below actual clip?

I'm an ex Yorkville guy so I sent this thread to a friend of mine still there. Here's the response:

[FONT=&amp]Hi All,

The power amp clip lights fire exactly when the amplifier has reached clipping.This information has probably gotten confused with the clip sensing in the mixers which is indeed set up to fire 3dB below clipping.

If the limiter is turned on, the clip light also indicates the start of limiting. The clip indicating circuit in the AP amplifiers will keep the clip LED on for a longer than the actual clipping period so that the user can actually see when he has run out of headroom. The LEDs turn on even for very short periods of clipping. The clip indicators on some QSC models work off the limiter feed so clipping has to last more than 100 milliseconds before you see any clip indication. The Crowns also use a similar scheme as do all of the QSC copies out there. I'm sure this difference is what has lead to the confusion about the clip indicators.

I hope this helps clear up the confusion.

[/FONT]

<blockquote data-quote="Dave Scarlett" data-source="post: 47895" data-attributes="member: 1326">Re: Amps with clip indicators that fire at 3dB below actual clip?I&#039;m an ex Yorkville guy so I sent this thread to a friend of mine still there. Here&#039;s the response:[FONT=&amp;amp]Hi All,&nbsp;The power amp clip lights fire exactly when the amplifier has reached clipping.This information has probably gotten confused with the clip sensing in the mixers which is indeed set up to fire 3dB below clipping.&nbsp; If the limiter is turned on, the clip light also indicates the start of limiting. The clip indicating circuit in the AP amplifiers will keep the clip LED on for a longer than the actual clipping period so that the user can actually see when he has run out of headroom. The LEDs turn on even for very short periods of clipping. The clip indicators on some QSC models work off the limiter feed so clipping has to last more than 100 milliseconds before you see any clip indication. The Crowns also use a similar scheme as do all of the QSC copies out there. I&#039;m sure this difference is what has lead to the confusion about the clip indicators.I hope this helps clear up the confusion.[/FONT]</blockquote>

[QUOTE="Dave Scarlett, post: 47895, member: 1326"] Re: Amps with clip indicators that fire at 3dB below actual clip? I'm an ex Yorkville guy so I sent this thread to a friend of mine still there. Here's the response: [FONT=&amp]Hi All, The power amp clip lights fire exactly when the amplifier has reached clipping.This information has probably gotten confused with the clip sensing in the mixers which is indeed set up to fire 3dB below clipping. If the limiter is turned on, the clip light also indicates the start of limiting. The clip indicating circuit in the AP amplifiers will keep the clip LED on for a longer than the actual clipping period so that the user can actually see when he has run out of headroom. The LEDs turn on even for very short periods of clipping. The clip indicators on some QSC models work off the limiter feed so clipping has to last more than 100 milliseconds before you see any clip indication. The Crowns also use a similar scheme as do all of the QSC copies out there. I'm sure this difference is what has lead to the confusion about the clip indicators. I hope this helps clear up the confusion. [/FONT] [/QUOTE]

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