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diytube ST70 driver docs & mods (discontinued)
by Shannon Parks » Wed Jan 25, 2006 8:28 pm

11 Replies

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Last post by EWBrown
Sat Sep 10, 2016 8:00 pm

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A470 transformers replacement
by bulldog » Fri Jan 25, 2013 4:14 am

5 Replies

5187 Views

Last post by pmarcin
Sat Apr 20, 2013 2:29 pm
Simple Question
by pmarcin » Sat Apr 20, 2013 12:53 pm

2 Replies

2833 Views

Last post by pmarcin
Sat Apr 20, 2013 1:48 pm
List of power supply boards/options for ST-70?
by Aljaheejus » Thu Feb 02, 2012 10:38 pm

14 Replies

9902 Views

Last post by pmarcin
Sat Apr 20, 2013 1:41 pm
vu meters on A VTA St-70 Kit
by islanddave » Mon Jan 14, 2013 3:14 pm

11 Replies

6296 Views

Last post by burnedfingers
Tue Jan 29, 2013 6:04 am
Overhaulin' the ST70
1, 2, 3by TerrySmith » Tue Mar 01, 2011 9:52 am

33 Replies

21160 Views

Last post by kheper
Sat Dec 29, 2012 4:06 pm
New VTA driver boards. To upgrade or not
by thisisjay » Tue Dec 18, 2012 5:10 pm

3 Replies

3856 Views

Last post by mesherm
Wed Dec 19, 2012 3:36 pm
Beefing up a ST70
by battradio » Sun Nov 04, 2012 10:11 pm

12 Replies

7452 Views

Last post by burnedfingers
Sat Dec 08, 2012 3:21 pm
pair of st-70 OPTs on ebay
by nyazzip » Sun Nov 11, 2012 10:26 pm

4 Replies

3040 Views

Last post by nyazzip
Sat Nov 17, 2012 2:25 am
A nice ST70 build, original board, custom chassis
by Quad » Tue Nov 06, 2012 10:26 pm

2 Replies

2543 Views

Last post by Shannon Parks
Thu Nov 08, 2012 6:54 am
12BH7 optimization instead of 12au7
by battradio » Wed Oct 17, 2012 7:23 pm

3 Replies

2860 Views

Last post by Shannon Parks
Wed Oct 31, 2012 6:03 am
6922's for driver board?
by iqmike » Fri Oct 26, 2012 6:54 pm

14 Replies

5282 Views

Last post by Shannon Parks
Wed Oct 31, 2012 6:03 am
Stereo 70 Mechanical Drawings
by kt88pppamp » Wed Oct 24, 2012 4:16 pm

5 Replies

2699 Views

Last post by kt88pppamp
Tue Oct 30, 2012 5:30 pm
A470 Lead I.D.
by Geezer » Wed Jul 18, 2012 9:51 pm

2 Replies

2049 Views

Last post by burnedfingers
Mon Sep 17, 2012 4:53 pm
What Resistors To Use?
by gfederys » Sun Sep 09, 2012 5:46 am

3 Replies

2575 Views

Last post by gfederys
Tue Sep 11, 2012 10:34 am
Tube Rectifier Current
by skidave » Sat Aug 04, 2012 1:15 pm

3 Replies

2798 Views

Last post by burnedfingers
Mon Aug 06, 2012 4:53 am
Triode ST 70 Bias Expansion
1, 2by kingmatt » Mon Jun 11, 2012 7:36 pm

15 Replies

7587 Views

Last post by burnedfingers
Sat Aug 04, 2012 1:46 am
ST70 PT Bias Current
by Geezer » Sun Jul 15, 2012 5:31 pm

11 Replies

4575 Views

Last post by burnedfingers
Mon Jul 23, 2012 4:26 am
The A470 OPT, an interesting work of art.
1, 2, 3by Geek » Mon Sep 14, 2009 3:07 pm

32 Replies

30714 Views

Last post by Geek
Sun Jul 08, 2012 2:25 am
where is the bias pin in my rebuilt dynaco st-70?
by vuthecuongjapan » Sun May 27, 2012 9:20 pm

2 Replies

2518 Views

Last post by Geek
Mon May 28, 2012 10:45 pm
.02uF Ceramic Caps Filament Winding Centertaps to Gnd ST-70
by Scott Novak » Thu Apr 05, 2012 10:59 am

5 Replies

2818 Views

Last post by burnedfingers
Tue May 15, 2012 5:10 am
EL-34 question; can't read bias
by joeriz » Sat Apr 07, 2012 10:03 am

8 Replies

3725 Views

Last post by dcgillespie
Sun May 06, 2012 2:11 pm
DIYtube ST-70 driver Resistor Substitution question
by Aljaheejus » Tue Feb 07, 2012 11:14 pm

3 Replies

2971 Views

Last post by Scott Novak
Mon Apr 09, 2012 5:33 am
DIY Tube Driver Board
by janna » Wed Apr 04, 2012 9:55 am

4 Replies

3173 Views

Last post by janna
Fri Apr 06, 2012 6:56 pm
8417's in a Stereo 70?
by burnedfingers » Thu May 12, 2011 5:02 am

11 Replies

8260 Views

Last post by kheper
Fri Mar 23, 2012 6:05 am
ST 70 Runaway Bias
1, 2by kingmatt » Thu Mar 01, 2012 2:35 pm

19 Replies

7303 Views

Last post by kheper
Mon Mar 05, 2012 4:14 pm
st70-Power Cable Gauge
1, 2, 3by snitch56 » Fri Feb 25, 2011 6:48 pm

32 Replies

15777 Views

Last post by DeathRex
Wed Feb 01, 2012 9:07 pm
Driver mod
by battradio » Fri Jan 13, 2012 12:07 pm

2 Replies

2905 Views

Last post by Shannon Parks
Sat Jan 14, 2012 6:11 am
DC Offset on Input
by skidave » Mon Dec 19, 2011 8:30 pm

3 Replies

2601 Views

Last post by skidave
Tue Dec 20, 2011 12:57 pm
Anybody got any idea of what this might be?
by kevco » Tue Apr 12, 2011 1:27 pm

8 Replies

4297 Views

Last post by battradio
Sun Dec 18, 2011 10:27 am
Show me your ugly stereo 70
by burnedfingers » Wed Sep 28, 2011 4:18 pm

14 Replies

5668 Views

Last post by 20to20
Wed Dec 07, 2011 11:48 pm
Using a ST 70 biamped
by battradio » Wed Nov 30, 2011 7:20 pm

6 Replies

3731 Views

Last post by 20to20
Fri Dec 02, 2011 8:53 pm
Interested in a ST-70 driver with Mullard 5-20 circuit?
1, 2by Geek » Tue Aug 18, 2009 1:59 pm

21 Replies

10081 Views

Last post by Geek
Fri Dec 02, 2011 5:33 pm
ST70 modern style of me
1, 2by Ultraline » Fri Nov 25, 2011 12:34 pm

25 Replies

9878 Views

Last post by Geek
Sun Nov 27, 2011 10:49 pm
Replacing ST-70 driver board - a RETORATION or REBUILD ???
1, 2by cheap-Jack » Mon Oct 31, 2011 10:50 am

15 Replies

7787 Views

Last post by Geek
Tue Nov 08, 2011 8:14 pm
6SL7/6SL7 Driver board for Dynaco stereo 70
by burnedfingers » Sat Apr 16, 2011 8:31 am

8 Replies

5171 Views

Last post by Thatch
Thu Jul 28, 2011 7:21 pm
Restoring a ST-70
1, 2, 3by Dynaco_WJW » Tue Jul 05, 2011 2:20 pm

31 Replies

13854 Views

Last post by soundmasterg
Mon Jul 25, 2011 7:00 am
Advice needed, buying ST-70, where to look at?
by Dynaco_WJW » Sat Jun 18, 2011 2:35 am

11 Replies

7510 Views

Last post by Dynaco_WJW
Sun Jul 10, 2011 10:20 am
Realistic Lifetime 5AR4
1, 2by kt88pppamp » Tue Jun 28, 2011 9:39 pm

22 Replies

9023 Views

Last post by EWBrown
Fri Jul 08, 2011 1:31 pm
EL34 identification help
by TerrySmith » Sun Mar 06, 2011 12:09 pm

12 Replies

7286 Views

Last post by Dynacophil
Sat Jun 04, 2011 2:17 pm
"New" Chris Keller ST-70
by zonker92 » Thu Apr 14, 2011 11:50 am

9 Replies

6018 Views

Last post by burnedfingers
Wed Apr 20, 2011 5:52 am
VTA Board Wiring Question
by zonker92 » Fri Apr 15, 2011 12:05 pm

1 Replies

2833 Views

Last post by dcgillespie
Fri Apr 15, 2011 4:53 pm
My first project.
1, 2, 3, 4by MrMiele » Tue Feb 08, 2011 11:11 pm

47 Replies

20686 Views

Last post by MrMiele
Sun Apr 10, 2011 11:45 am
Need help on deep clean/polish of PAS3X knobs and faceplates
by zebrostripe » Fri Apr 01, 2011 10:35 pm

3 Replies

2788 Views

Last post by zebrostripe
Sat Apr 02, 2011 8:45 am
C354 Info?
by Geek » Tue Mar 15, 2011 2:31 am

1 Replies

2329 Views

Last post by Geek
Thu Mar 31, 2011 12:56 am
Hot-Rodded ST-70 Kit (Tubes4Hifi)
1, 2, 3by highflyin9 » Mon Jan 31, 2011 9:05 am

33 Replies

17497 Views

Last post by burnedfingers
Sat Mar 12, 2011 12:21 pm
humm and buzz
by chopchip » Wed Feb 23, 2011 8:13 am

5 Replies

3449 Views

Last post by TomMcNally
Wed Feb 23, 2011 10:10 pm
Uses for an old quad cap
1, 2by TerrySmith » Sun Feb 13, 2011 3:25 pm

16 Replies

7524 Views

Last post by dcriner
Sun Feb 20, 2011 9:24 am
ST-70 Purchasing questions
by zebrostripe » Sun Feb 06, 2011 1:24 am

7 Replies

4348 Views

Last post by burnedfingers
Sun Feb 20, 2011 5:52 am
New guy with a new ST-70 project
1, 2by Wardsweb » Sat Jan 02, 2010 8:27 am

27 Replies

13937 Views

Last post by WA4SWJ
Wed Feb 09, 2011 7:50 am
ST70 Output Transformers
by Bob » Sun Feb 06, 2011 3:14 pm

3 Replies

2911 Views

Last post by Geek
Sun Feb 06, 2011 4:55 pm

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