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Topics	Replies	Author	Views	Last Posts
Announcement: dual rectifiers for ST120 & ST70 amps 1, 2	30	Roy Mottram	4146	Sat Dec 02, 2023 6:27 pm by GAflubug
Announcement: Tubes IN STOCK - Tung-Sol, Gold Lion, Electro-Harmonix, Svetlana, Sovtek, JJ	2	Dan W	878	Thu Sep 07, 2023 9:00 pm by Dan W
Announcement: blown tubes	0	Roy Mottram	1377	Thu Jun 08, 2023 7:51 pm by Roy Mottram
16 ohm speakers	9	Roy Mottram	1183	Sun Oct 24, 2021 10:10 am by TN Allen
Noise from 1 channel. I have tried the following so far and no luck. Suggestions?	13	smoorenc	1058	Sat Oct 23, 2021 7:36 am by smoorenc
Troubleshooting VTA-70, First Time	10	bbrater	1072	Sat Oct 16, 2021 3:57 pm by bbrater
M-125 Output Impedance Tricks? 1, 2, 3	51	ttocs	3331	Wed Oct 13, 2021 2:27 pm by pedrocols
VTA 120 output tube red plated -- what do you check if you're using the AB board?	11	Guest	1039	Wed Oct 13, 2021 1:30 pm by Guest
Modified Dynaco ST70	8	NSacchetti	1655	Tue Oct 12, 2021 1:49 pm by ELBill34
Original MK3 and ST70 Bias settings, Why?	3	jwb474	984	Tue Oct 12, 2021 7:22 am by Bob Latino
PAS 3 Balance Control Replacement Options?	5	breading	1073	Fri Oct 08, 2021 9:25 pm by Roy Mottram
Very low bias and hum on Dynakit ST-70 1, 2	36	lagwil	4277	Wed Oct 06, 2021 1:58 pm by DC92
ST-70 speaker recommendation? 1, 2	40	raudio44	4166	Tue Oct 05, 2021 4:41 am by raudio44
opiniion survey on amplifier style	14	Roy Mottram	1525	Mon Sep 27, 2021 10:27 pm by Roy Mottram
VTA-ST120 Bias resistor settings,	5	edman44	1028	Mon Sep 27, 2021 10:23 pm by Roy Mottram
6dj8 in a ph16?	2	EWALAA	570	Mon Sep 27, 2021 10:17 pm by Roy Mottram
Tight tube sockets	4	docswanson	853	Sat Sep 18, 2021 1:47 pm by docswanson
M125 AutoBias Goes Out	9	IntarsiaGuy	1525	Wed Sep 15, 2021 12:59 pm by pavlikkkk
5AR4 for Pas	1	Tube747	559	Tue Sep 14, 2021 10:15 am by peterh
Autobias board question	1	Guest	979	Sun Sep 12, 2021 3:46 pm by pavlikkkk
Help with a markIII - very low output	5	EWALAA	747	Thu Sep 09, 2021 9:21 pm by EWALAA
Is it OK to bypass the Selenium like this?	5	bubbasweet	556	Thu Sep 09, 2021 3:20 pm by danielrhall
FM-1 Multiplexer Board anyone have one for sale?	1	bubbasweet	396	Tue Sep 07, 2021 4:24 am by jwb474
Impedance Curve vs Manufacturer Nominal	0	texbychoice	293	Mon Sep 06, 2021 11:35 am by texbychoice
FM-1 Coil home repair.	2	bubbasweet	636	Sun Sep 05, 2021 2:05 pm by bubbasweet
SP12 preamp revisited	1	Roy Mottram	7606	Sat Sep 04, 2021 5:42 pm by Roy Mottram
KT-120 electric shock	3	alexbramford	1016	Thu Sep 02, 2021 10:53 am by Bob Latino
Heartbeat-like thumping in speakers? ST-70 > PAS-3	13	DC92	1001	Tue Aug 31, 2021 3:09 pm by DC92
Dynaco FM-1 Hum on high bass	3	bubbasweet	582	Tue Aug 31, 2021 11:53 am by bubbasweet
Differences between the Dynaco PAS 2/3 and the PAS-3X preamps	2	Bob Latino	2461	Fri Aug 27, 2021 3:21 pm by jwb474
Dyna PAS3 voltage question	10	Pablo	1194	Fri Aug 27, 2021 1:40 pm by Wharfcreek
KT120 power tubes blowing fuses and bias resistors in the ST-120	2	alexbramford	1166	Mon Aug 23, 2021 7:47 am by Bob Latino
ST-70 rectifier question	6	raudio44	1018	Fri Aug 20, 2021 4:27 am by raudio44
Carbon Resistors on Power Supply Caps replace or not	5	bubbasweet	609	Thu Aug 19, 2021 10:41 am by bubbasweet
Thank you Bob ST-70	0	raudio44	507	Wed Aug 18, 2021 7:15 am by raudio44
Dynaco VTA-ST120 yellow sheet diode mod.	2	edman44	1188	Tue Aug 17, 2021 11:24 pm by edman44
My 2 VTA ST 120 Choke Mesurments.	3	Tom Pickett	569	Mon Aug 16, 2021 3:59 pm by edman44
My first Dynaco ST-70 with VTA driver board rebuild	4	docswanson	1160	Sun Aug 15, 2021 2:34 pm by knotscott
Time Delay Relay For Pre-Amps/Small Power Amps.	2	jwb474	517	Fri Aug 13, 2021 8:01 pm by Tubes4ever
vta driver tube change & sound question 1, 2	42	paysonmark	2169	Thu Aug 12, 2021 9:05 pm by Cl75
Restore Three Mark II Amps 1, 2, 3	59	johnmeyer	3256	Wed Aug 11, 2021 8:58 pm by johnmeyer
Driver tube replacement	11	Sfguitarworks	1610	Mon Aug 09, 2021 1:29 am by pavlikkkk
PAS 3 capacitor functions on the line stage board 5	1	smype	516	Sat Aug 07, 2021 8:18 pm by peterh
SP14 hum during warmup	2	bobgroger	964	Fri Aug 06, 2021 10:35 am by ixe13
Post a PDF File	1	jwb474	531	Thu Aug 05, 2021 7:19 pm by Roy Mottram
Dyanco VTA-PA-060-120 DP Transformer.	2	edman44	570	Thu Aug 05, 2021 2:35 pm by edman44
ST-120 and summer time voltage swings	2	DavidR	545	Mon Aug 02, 2021 7:03 pm by DavidR
Optimal Cap Values for PAM1 PS-1 Restoration Hum Reduction	0	bubbasweet	367	Mon Aug 02, 2021 12:52 pm by bubbasweet
Setting bias on Mk 3 -- speaker connection required?	1	jrethorst	637	Sun Aug 01, 2021 7:39 am by Bob Latino
Hum/Hiss/Static out of Left Channel (Speaker)	17	Chipster1969	1163	Fri Jul 30, 2021 8:28 am by Chipster1969
When replacing the PC 5 board with new on the PAS-2 soldered clips	4	bubbasweet	321	Wed Jul 28, 2021 11:41 am by bubbasweet
Speaker terminal wiring for VTA70 upgrade	4	erniegiro	1386	Wed Jul 28, 2021 8:15 am by Bob Latino
VTA st-70 amplifier	1	Latts	854	Sun Jul 25, 2021 11:43 am by Bob Latino