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Title: Suddenly Kleinulator sounds bad .... Post by: Franne500 on March 25, 2009, 07:52:02 PM Hi guys,
Today I got to spend på few hours building my new rack setup. But when I plug in my Klein the amp gets dull, it looses a lot of bass and it gets sort of ehm...... "farty" on the 3 deepest strings. Does anyone have a clue of what the problem is? Title: Re: Suddenly Kleinulator sounds bad .... Post by: hywelg on March 25, 2009, 08:46:58 PM I'm assuming thats with no effects in the Klein loop. I'd check the input voltage first.
Then the bias on the FET. This is what Nik emailed me about it You can check between the pin nearest to the filter caps, and the middle pin. It's 22V Nik Hope thats of some use. Other than that has yours got the 10r resisitor and zener diode mod to protect the chip? Unfortunately Nik can't publish the layout but does your power supply board look like the ones in the website photos? This is the old layout. It should look like the photo below. Some people have managed to damage the chip with the old layout. Title: Re: Suddenly Kleinulator sounds bad .... Post by: Franne500 on March 26, 2009, 07:15:40 AM Thanks Hywelg !
I checked the Bias on the FET - It was 10V - so I turned it up to 21,7V it helped a little, but still it sounds weird - When I run my Volume at 3 o'clock and turns my master above 12 o'clock I get a Fuzz tone very similar to the one Keith uses on "Jumping Jack Flash" - MAN...that's cool - but not good when it is supposed to be clean :-) I also thecked the input voltage..... it is fine at 9.6V Title: Re: Suddenly Kleinulator sounds bad .... Post by: hywelg on March 26, 2009, 09:46:05 AM If the bias had drifted so badly out it sounds like you have a duff component somewhere. I'd email Nik. He be able to give you better suggestions for investigation than I can.
Title: Re: Suddenly Kleinulator sounds bad .... Post by: Franne500 on March 26, 2009, 09:51:45 AM Done ! :)
Thank you ! Title: Re: Suddenly Kleinulator sounds bad .... Post by: Steven_nl on March 26, 2009, 10:47:49 AM Maybe one or both FETs blew. This happened to me on bot my Klein's
In the new Klein lay out there's a zaner to protect the parts. Title: Re: Suddenly Kleinulator sounds bad .... Post by: Franne500 on March 27, 2009, 06:40:47 AM Hi Guys,
thanks for all the inputs ! After 8a lot :) ) og emailing with Nik we found out that indeed the chip is toasted. Thank you ! :) |