Recommended Modifications/Tweaks for Dynaco PAS-3 Series II Pre-Amp - diyAudio
Go Back   Home > Forums > Amplifiers > Tubes / Valves

Tubes / Valves All about our sweet vacuum tubes :) Threads about Musical Instrument Amps of all kinds should be in the Instruments & Amps forum

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 30th May 2005, 05:14 AM   #1
diyAudio Member
 
Join Date: Feb 2005
Location: Manila, Philippines
Lightbulb 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
  Reply With Quote
Old 30th May 2005, 12:49 PM   #2
diyAudio Member
 
Brian Beck's Avatar
 
Join Date: Dec 2004
Location: South Florida, USA
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
  Reply With Quote
Old 31st May 2005, 05:00 AM   #3
diyAudio Member
 
Join Date: Aug 2002
Location: sylmar, CA. USA
Default 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
  Reply With Quote
Old 17th January 2006, 08:40 AM   #4
diyAudio Member
 
Join Date: Apr 2004
Location: manila, philippines
Default 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?
  Reply With Quote
Old 20th October 2010, 07:44 AM   #5
diyAudio Member
 
Geek's Avatar
 
Join Date: Sep 2004
A certain forum member is an authorized reseller of the Koren boards too

Cheers!
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Three 10" 4Ohm subs, wired in series or series-parallel? Nagamitsu Car Audio 38 19th February 2014 11:16 PM
Quality of Hammond 300 series power transformers compared to 200 series? G Tubes / Valves 10 3rd August 2012 07:32 AM
preamp suitable for Dynaco st-70- OTHER than dynaco namatjira Tubes / Valves 3 22nd December 2011 01:21 AM
Tweaks vs. insanity (yes, just another thread about tweaks; but there are some links) Rodeodave Everything Else 7 28th February 2007 03:05 AM
DAC modifications elaar Parts 5 29th May 2006 01:11 PM


New To Site? Need Help?

All times are GMT. The time now is 01:53 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2