Help! High Offset on Tjoeb 99

blip1882 · 13th December 2005, 04:31 AM

I just measured the DC offset on the Tjoeb 99 that I use in my secondary system and found that it is spitting out 100mV+. Now this is no problem in my current system because my pre-amp has input caps. However, I wanted to integrate my headphone amp which lacks input or output caps.

So should I just put in a couple of new output caps on the Tjoeb or is there a deeper problem in the CD player that I need to address? I hate to put a bandage on a problem that I could fix more directly. I've never worked with tubes before so would adjusting the bias or replacing the tubes help? Any advice would be greatly appreciated.

blip1882 · 15th December 2005, 10:09 PM

No one? Hmmm... Well does anyone have a schematic for the Tjoeb modifications? (I know that they bypass the regular Marantz output stage so any information on the specifics would be great.) I suppose that I can just drop some new output caps in and not worry about it...

dsavitsk · 16th December 2005, 12:26 AM

there are a pile of suggestions in your similar thread at head-fi.

13th December 2005, 04:31 AM	#1
blip1882 diyAudio Member Join Date: Sep 2005	Help! High Offset on Tjoeb 99 I just measured the DC offset on the Tjoeb 99 that I use in my secondary system and found that it is spitting out 100mV+. Now this is no problem in my current system because my pre-amp has input caps. However, I wanted to integrate my headphone amp which lacks input or output caps. So should I just put in a couple of new output caps on the Tjoeb or is there a deeper problem in the CD player that I need to address? I hate to put a bandage on a problem that I could fix more directly. I've never worked with tubes before so would adjusting the bias or replacing the tubes help? Any advice would be greatly appreciated.

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15th December 2005, 10:09 PM	#2
blip1882 diyAudio Member Join Date: Sep 2005	No one? Hmmm... Well does anyone have a schematic for the Tjoeb modifications? (I know that they bypass the regular Marantz output stage so any information on the specifics would be great.) I suppose that I can just drop some new output caps in and not worry about it...

16th December 2005, 12:26 AM	#3
dsavitsk diyAudio Member Join Date: Jan 2005 Location: Chicago	there are a pile of suggestions in your similar thread at head-fi.

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