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30th May 2005, 05:14 AM
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#1 |
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diyAudio Member
Join Date: Feb 2005
Location: Manila, Philippines
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Recommended Modifications/Tweaks for Dynaco PAS-3 Series II Pre-Amp
hi!
a friend is asking me what are some modifications/improvements/tweaks that can be done for a Dynaco PAS-3 series II tube pre-amp...it uses 3 pieces 12ax7 tubes in the line stage stage as well as 3 12ax7 tubes in the phono stage...any website that you can recommend? many thanks to all! Superman 
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30th May 2005, 12:49 PM
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#2 |
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diyAudio Member
Join Date: Dec 2004
Location: South Florida, USA
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Norman Koren has done some good work sorting out the feedback and coupling issues of the older Dyna preamps:
http://www.normankoren.com/Audio/ I'm not sure how much of this applies to the Series II, but worth a look.
__________________
Brian |
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31st May 2005, 05:00 AM
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#3 |
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diyAudio Member
Join Date: Aug 2002
Location: sylmar, CA. USA
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Norman Koren 2nd yes vote
http://www.normankoren.com/Audio/Spice_preamp.html
It amount to almost a total rebuild but the circuit confuguration is a serious winner, used by Hovland, Pultec and Groovetubes. Have at it and enjoy! Robert Morin |
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17th January 2006, 08:40 AM
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#4 |
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diyAudio Member
Join Date: Apr 2004
Location: manila, philippines
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pas3 bass & treble
Hello !
I don't want to totally rebuild my pas3. All i want is to change the pot into a commercial value, because 700k & 400k are nowhere to find. what shall i do without changing the circuit? |
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