help to mod

leimaster · 9th December 2006, 02:26 PM

I have a t-amp from audiodigit.
It's quiet good but bass are not so extended.
Can i do something to solve?

Schematics

Thank You

leimaster · 9th December 2006, 03:11 PM

You can see from schematics that it has already the modification of 2.2uF caps....so what else can i do?

pinkmouse · 9th December 2006, 04:50 PM

If you search, you will find many threads dealing with this topic.

lousymusician · 10th December 2006, 04:56 AM

I started by replacing the 2200 uf capacitors (C4 & C7) with low ESR caps. I used Black Gates because they were fairly easy for me to get, but there are others that should also work well (Panasonic, Nichicon, Rubycon). I replaced Cpump with a 1 uf Black Gate also, I don't know if that made any difference but it was cheap and easy. I'd have replaced C3 also, but that value was out of stock so I let it be for now.

My next steps will be to use a stepped attenuator instead of the supplied pot, and replacing the 2.2 uf input caps with nice film and foil polypropylenes. I have some Sonicaps standing by fr that step.

leimaster · 10th December 2006, 10:18 AM

Thank you for replay.
Is your punch bass better now?

lousymusician · 10th December 2006, 09:24 PM

The bass is probably a bit better, but the bigger difference was in smoothing out the high frequencies.

9th December 2006, 02:26 PM	#1
leimaster diyAudio Member Join Date: Mar 2006 Location: sr	help to mod I have a t-amp from audiodigit. It's quiet good but bass are not so extended. Can i do something to solve? Schematics Thank You

9th December 2006, 04:50 PM	#3
pinkmouse diyAudio Moderator Join Date: Apr 2002 Location: Chatham, England	If you search, you will find many threads dealing with this topic. __________________ Al I conceive of nothing, in religion, science or philosophy, that is more than the proper thing to wear, for a while. Charles Fort

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9th December 2006, 03:11 PM	#2
leimaster diyAudio Member Join Date: Mar 2006 Location: sr	You can see from schematics that it has already the modification of 2.2uF caps....so what else can i do?

10th December 2006, 04:56 AM	#4
lousymusician diyAudio Member Join Date: Nov 2005 Location: NorCal	I started by replacing the 2200 uf capacitors (C4 & C7) with low ESR caps. I used Black Gates because they were fairly easy for me to get, but there are others that should also work well (Panasonic, Nichicon, Rubycon). I replaced Cpump with a 1 uf Black Gate also, I don't know if that made any difference but it was cheap and easy. I'd have replaced C3 also, but that value was out of stock so I let it be for now. My next steps will be to use a stepped attenuator instead of the supplied pot, and replacing the 2.2 uf input caps with nice film and foil polypropylenes. I have some Sonicaps standing by fr that step.

10th December 2006, 10:18 AM	#5
leimaster diyAudio Member Join Date: Mar 2006 Location: sr	Thank you for replay. Is your punch bass better now?

10th December 2006, 09:24 PM	#6
lousymusician diyAudio Member Join Date: Nov 2005 Location: NorCal	The bass is probably a bit better, but the bigger difference was in smoothing out the high frequencies.

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