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techie47

Member Since 17 Apr 2013
Offline Last Active Sep 13 2013 09:24 PM
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Posts I've Made

In Topic: XLS 5000 get very hot without any audio signal applied

13 September 2013 - 09:27 PM

Thanks a million for your input.      The amp is wired for 120 vac. There is no more than  6 millivolts max on each channel when it's measured with a multimeter.  I will check grounds and supply voltage on the power supply capacitors and then the output stage  bias next.

In Topic: XLS 5000 get very hot without any audio signal applied

12 September 2013 - 08:37 PM

Hello Alain,
It get very hot to the touch where the heatsink is in the back of the amp in less than fifteen minutes. No, I didn't measure thet emp with a thermal thermometer as yet. The top and bottom of the amp gets hot where the output stage is. The fan is blowing out very hot air when you put your hand  where  the air comes out. The strange thing is no  input jacks  or speakers are connected to it and it gets hot. Thats why I am wondering if it's oscillations or a bias problem it has. I guess I will have to pull out the oscilloscope and multimeter soon.

In Topic: XLS-802 fans question

10 August 2013 - 05:02 AM

You will need a schematic and a multimeter. R23,or  F3 might be open. F3 is rated for 500milliamps.  I had the same problem,but mines was caused from heavy grease building up in a resturant kitchen on the fans that caused F3 to open or blow.

In Topic: Crown XLS 802

29 June 2013 - 11:49 AM

Check the resistors and  the OP Amp in the front end.

In Topic: Someone please slap me and wake me up on the old crown XLS Dseries

18 June 2013 - 07:36 PM

So that should means the XLS5000 has a better output efficiency than the xls802 etc.
I know that the MA5000VZ and the MA3600VZ  efficiency was about 65 percent.