Charlize Drop-Out Problem

serengetiplains · 25th August 2006, 11:42 PM

I have two Charlize Tripath amps serving duty in a bi-amp system. Sometimes just after turning both amps on, or upon pushing them hard, one of the amps will turn on and off on a 2 second cycle. I don't think this is entirely temperature related problem given it happens when the amps are cold on turn-on. It's not a big concern, because I've always been able to solve the problem by turning the amps off and on again. Anyone know what might be happening?

BWRX · 26th August 2006, 12:40 AM

Sonds like you're tripping some part of the protection circuitry. Could be over current since you said you were driving them hard.

Pano · 26th August 2006, 07:16 AM

I had a couple of Fenice20 boards that did that. Just had to turn them down.

When the amps start to cut out like that. you're clipping badly anyway. But some of the chips seem to be more sensitive than others..

classd4sure · 26th August 2006, 09:34 AM

Hi,

Could this be ripple related... as in bad electrolytics? Variation within the IC itself shouldn't be too much? What components are associated with this protection circuitry?

vt4c · 27th August 2006, 08:20 AM

From your description, I would strongly believe that Charlize has been over-driven. There was a similar case reported by a fellow member here sometime back.

25th August 2006, 11:42 PM	#1
serengetiplains diyAudio Member Join Date: Feb 2004 Location: Canada	Charlize Drop-Out Problem I have two Charlize Tripath amps serving duty in a bi-amp system. Sometimes just after turning both amps on, or upon pushing them hard, one of the amps will turn on and off on a 2 second cycle. I don't think this is entirely temperature related problem given it happens when the amps are cold on turn-on. It's not a big concern, because I've always been able to solve the problem by turning the amps off and on again. Anyone know what might be happening? __________________ Tom

26th August 2006, 12:40 AM	#2
BWRX diyAudio Moderator Emeritus Join Date: Jan 2005 Location: Pennsylvania	Sonds like you're tripping some part of the protection circuitry. Could be over current since you said you were driving them hard. __________________ Brian

26th August 2006, 07:16 AM	#3
Pano diyAudio Moderator Join Date: Oct 2004 Location: North Carolina Blog Entries: 4	I had a couple of Fenice20 boards that did that. Just had to turn them down. When the amps start to cut out like that. you're clipping badly anyway. But some of the chips seem to be more sensitive than others.. __________________ Take the Speaker Voltage Test!

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26th August 2006, 09:34 AM	#4
classd4sure Account Disabled Join Date: Feb 2004	Hi, Could this be ripple related... as in bad electrolytics? Variation within the IC itself shouldn't be too much? What components are associated with this protection circuitry?

27th August 2006, 08:20 AM	#5
vt4c diyAudio Member Join Date: Jan 2001 Location: Malaysia	From your description, I would strongly believe that Charlize has been over-driven. There was a similar case reported by a fellow member here sometime back.

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