Welcome To the Hoffman Amplifiers ForumMarch 12, 2026, 08:08:03 am | ||
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FARGEN amp schems needed
Started by Colas LeGrippa |
9 Replies
6592 Views |
by Colas LeGrippa |
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175 Replies
63189 Views |
by super&plexi |
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8 Replies
5884 Views |
by kwm488 |
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Can't get sound out of my ODS-100-HRM
Started by Mike_J |
20 Replies
7128 Views |
by Mike_J |
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All signs point to open PT primary (??!!!)
Started by BrianS |
20 Replies
7445 Views |
by BrianS |
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Adding a balanced line out to a tube amp
Started by Baguette |
13 Replies
13177 Views |
by labb |
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Advice on placement of wires
Started by dude |
19 Replies
7739 Views |
by eleventeen |
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SE draws max current at idle???
Started by jeff |
10 Replies
6061 Views |
by PRR |
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AA764 champ proper grounding scheme.
Started by goldstache |
26 Replies
9821 Views |
by goldstache |
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Issue to lower voltages on my new build
Started by MZANNETOS |
1 Replies
3032 Views |
by HotBluePlates |
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Hammond 273BX PT question
Started by navdave |
12 Replies
5477 Views |
by ernie_jr |
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Sunn Solarus solid state power supply
Started by navdave |
14 Replies
7204 Views |
by navdave |
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25 Replies
13567 Views |
by MZANNETOS |
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power supply filtering question
Started by thermion |
3 Replies
4195 Views |
by HotBluePlates |
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Good Morning Gut Shots
Started by TeslaRect5150 |
0 Replies
2492 Views |
by TeslaRect5150 |
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testing bias/lightbulb limiter
Started by jeff |
2 Replies
2801 Views |
by stratele52 |
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one two testing REDPLATE pics
Started by Colas LeGrippa |
2 Replies
3456 Views |
by Colas LeGrippa |
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LOUD hum, with master volume turned up
Started by Gainzilla |
21 Replies
15386 Views |
by HotBluePlates |
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High headroom and overdrive in the same amp
Started by Leevi |
9 Replies
5109 Views |
by Ritchie200 |
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low watt harp amp
Started by John |
6 Replies
4700 Views |
by John |
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Preamp tube shields
Started by markvalluzzi |
2 Replies
2878 Views |
by EL34 |
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7 Replies
4227 Views |
by Willabe |
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arcing between plate and heater
Started by Colas LeGrippa |
4 Replies
3954 Views |
by Colas LeGrippa |
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Reverb Tanks
Started by TIMBO |
4 Replies
3347 Views |
by terminalgs |
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What do you think of this idea
Started by TIMBO |
13 Replies
5749 Views |
by John |
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Can a 4-Lug Marshall Jack be Fixed?
Started by jjasilli |
3 Replies
2853 Views |
by jjasilli |
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8 Replies
4332 Views |
by Jack1962 |
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Vox Reverb Unit question
Started by kagliostro |
4 Replies
2704 Views |
by kagliostro |
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200 volt B+ drop!?
Started by navdave |
29 Replies
10480 Views |
by stratele52 |
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skylark GA5T question
Started by shooter |
2 Replies
2630 Views |
by shooter |
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13 Replies
6872 Views |
by Gainzilla |
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Power Transformer
Started by TIMBO |
15 Replies
5183 Views |
by tubeswell |
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77 Replies
20250 Views |
by EL34 |
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More on heaters
Started by Ed_Chambley |
47 Replies
16658 Views |
by Willabe |
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11 Replies
9553 Views |
by Jack1962 |
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2 heads on stage
Started by Madison |
9 Replies
5166 Views |
by Madison |
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Raised heater CT voltage?
Started by Voxbox |
6 Replies
3766 Views |
by Voxbox |
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Have to build or go nuts
Started by stevehoover |
3 Replies
2912 Views |
by stevehoover |
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D13 SJT 10/20 Biasing
Started by NotSure |
1 Replies
2882 Views |
by HotBluePlates |
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Not sure if voltages are correct ?
Started by dude |
4 Replies
3445 Views |
by dude |
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Old Mallory Caps
Started by TerryD |
18 Replies
8652 Views |
by EL34 |
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4 Replies
4841 Views |
by kagliostro |
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Some jargon definition please
Started by Ross |
5 Replies
3224 Views |
by TIMBO |
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Adding a Dwell pot to reverb
Started by TIMBO |
2 Replies
3164 Views |
by TIMBO |
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18 Replies
9807 Views |
by davew |
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DC Heater Circuit Question
Started by Ed_Chambley |
18 Replies
8260 Views |
by shooter |
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Magnatone M4
Started by plexi50 |
6 Replies
4099 Views |
by plexi50 |
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TremRevalo unit
Started by tubenit |
7 Replies
3729 Views |
by jjasilli |
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11 Replies
5456 Views |
by kagliostro |
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tone stack question
Started by shooter |
6 Replies
3644 Views |
by HotBluePlates |
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