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Topics | Replies | Author | Views | Last Posts | ||
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A Question About ST-70 Can Capacitor Upgrades | 15 | quadaptor | 13029 | Tue Nov 08, 2022 11:09 am by Bob Latino | ||
HUM, HUM ISSUES (resolved !) | 13 | pedrocols | 958 | Mon Nov 07, 2022 12:44 pm by pedrocols | ||
Noisy MK IV amps. SOLVED Trouble shooting insight appreciated. | 5 | fasturd | 827 | Fri Nov 04, 2022 3:15 pm by fasturd | ||
VTA-120 Possible Pentode/Triode Switch Problems | 7 | jimmeq | 733 | Mon Oct 31, 2022 6:03 pm by jimmeq | ||
Which Version VTA 70 Is This? | 6 | knotscott | 969 | Mon Oct 31, 2022 8:36 am by Bob Latino | ||
Which NOS 6AN8A? | 3 | rembrandt! | 524 | Sun Oct 30, 2022 9:23 pm by MechEngVic | ||
Dyna PAS 2 for the group | 6 | WLT | 1016 | Sun Oct 16, 2022 10:52 pm by daveshel | ||
Keep blowing Weber WZ68 rectifier on ST-120 | 4 | nathico | 958 | Sat Oct 08, 2022 1:20 pm by nathico | ||
PH14 With Volume Control | 4 | Rec | 635 | Sat Oct 08, 2022 10:57 am by Rec | ||
Strange set of RCA EL34s. Any idea about the design? | 2 | ccarlton28 | 711 | Mon Oct 03, 2022 8:57 pm by Jim McShane | ||
ST-70 what is a safe input VAC | 11 | raudio44 | 818 | Fri Sep 30, 2022 8:56 am by Brap | ||
VTA ST120 - Lost right channel, help needed | 9 | willythree | 1418 | Wed Sep 28, 2022 11:47 pm by rebellovw | ||
Brand New PSVane KT88s blew 3 fuses and 3 5AR4 Rectifiers in ST70 | 14 | arremondo | 1810 | Tue Sep 27, 2022 5:38 pm by Roy Mottram | ||
ST-120 tube redplate. Not a bad cathode resistor. what to check? | 5 | ChetJettison | 469 | Tue Sep 27, 2022 1:59 pm by peterh | ||
VTA 120 hum then high voltage at one pin | 1 | Beachlandguy | 447 | Wed Sep 21, 2022 2:26 am by peterh | ||
PH16 tube rolling positions question | 19 | mdelrossi | 2149 | Fri Sep 16, 2022 1:05 pm by carlsor | ||
PAS Circuit Question | 2 | breading | 613 | Fri Sep 16, 2022 12:15 am by daveshel | ||
Coupling caps for 6SN7 driver board question | 1 | Telescope12 | 674 | Mon Sep 12, 2022 3:43 pm by Bob Latino | ||
MK3s new build issue | 5 | MHProd | 799 | Sun Sep 11, 2022 12:55 am by MechEngVic | ||
Bad mechanical hum after installing Chinese "KT88" PSvane tubes and blowing 4 rectifiers | 9 | arremondo | 1246 | Sun Sep 11, 2022 12:44 am by MechEngVic | ||
85 deg C capacitor--advisable for VTA board? | 2 | colin86325 | 434 | Sat Sep 10, 2022 2:00 pm by colin86325 | ||
Rebuilding my M125s - can I use this cap in the SCM module? 1, 2, 3 | 56 | rebellovw | 4065 | Wed Sep 07, 2022 3:10 pm by rebellovw | ||
Psvane KT88C and ST-120 | 5 | smoorenc | 1714 | Tue Sep 06, 2022 12:13 pm by New2Tubez | ||
ST-70 chassis ground | 4 | bootstrapjesse | 877 | Sun Sep 04, 2022 4:23 pm by bootstrapjesse | ||
Interesting ST 70 | 1 | Dave_in_Va | 739 | Tue Aug 30, 2022 5:39 pm by Bob Latino | ||
Increase Bias Supply -Voltage | 6 | TubesGlo | 1414 | Wed Aug 17, 2022 10:07 pm by fredeb | ||
Mark 3 fuse blows after hours of use | 7 | jrethorst | 801 | Wed Aug 17, 2022 1:33 pm by Bob Latino | ||
[ Poll ] New PCB color option? | 1 | Dan W | 932 | Mon Aug 15, 2022 8:29 pm by Gabriel | ||
Stereo/Mono Switch.... | 5 | wolverine | 11118 | Fri Aug 12, 2022 7:08 am by lorne | ||
PCB Color Polls | 2 | jwb474 | 475 | Fri Aug 05, 2022 11:18 am by DavidR | ||
Paint Color? | 2 | Joe302 | 688 | Tue Aug 02, 2022 4:03 pm by Joe302 | ||
ST-70 NO BIAS | 14 | joseramonnavarro | 1009 | Thu Jul 28, 2022 6:21 pm by Roy Mottram | ||
New PSVANE KT88 and my Dynaco MK3s | 4 | bubbasweet | 928 | Wed Jul 27, 2022 6:05 pm by arremondo | ||
Starting the st120 up without speakers | 6 | Guest | 758 | Tue Jul 26, 2022 8:14 am by cci1492 | ||
EL 34 tubes in Mark 3 amp | 14 | jrethorst | 1174 | Thu Jul 21, 2022 3:10 pm by WLT | ||
Dyna Mk lll question | 6 | MarkS57 | 720 | Thu Jul 21, 2022 9:52 am by peterh | ||
Help, ST-70 bias issue and single output tube glowing | 5 | raudio44 | 1027 | Thu Jul 21, 2022 5:10 am by raudio44 | ||
Tubes4HiFi update | 1 | Roy Mottram | 2052 | Wed Jul 20, 2022 3:55 pm by DavidR | ||
5500 Ohm primary CT on A470? | 2 | bootstrapjesse | 478 | Mon Jul 18, 2022 3:09 pm by bootstrapjesse | ||
Dynaco ST70 el34 bias | 5 | directmetalmonster | 1176 | Mon Jul 18, 2022 1:18 pm by bootstrapjesse | ||
Rectifier tube keeps blowing???? | 7 | Surfing1 | 1275 | Wed Jul 13, 2022 10:11 pm by New2Tubez | ||
M-125 Tube Rectifier 5U4 or 5AR4? | 8 | ttocs | 1140 | Wed Jul 13, 2022 12:10 pm by Seamus | ||
M125 monoblock | 4 | Dynacanuck | 944 | Wed Jul 13, 2022 11:38 am by Seamus | ||
The Dynaco (Panor) ST-80 and ST-160 tube amps of the mid '90's | 13 | Bob Latino | 11063 | Wed Jul 13, 2022 1:07 am by Thx1326 | ||
My beautiful GZ37 shows some dark/burn on inside glass - but still works fine and the amp biases just fine... | 4 | rebellovw | 513 | Sun Jul 10, 2022 9:07 pm by rebellovw | ||
Dynaco ST70 with yellow sheet mod and SS rectifier? | 3 | crackerjack | 1031 | Fri Jul 08, 2022 1:45 pm by lorne | ||
Volume loss when splitting line out signal | 4 | breading | 683 | Sun Jul 03, 2022 10:51 am by Seamus | ||
ST-70 rectifier diode mod novice question | 6 | raudio44 | 1649 | Tue Jun 28, 2022 2:32 am by raudio44 | ||
Recommend mid priced speakers for the 120 amplifier. | 8 | Gabriel | 842 | Mon Jun 27, 2022 11:21 am by VTHokie83 | ||
Switch from 5AR4 to 5U4 Rectifier | 10 | BryceJ | 1998 | Mon Jun 27, 2022 9:50 am by Tubes4ever |
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