Welcome To the Hoffman Amplifiers ForumOctober 22, 2025, 05:20:23 pm | ||
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40 V AC in the green terminals of 6,3V
Started by rafaelctt |
32 Replies
6041 Views |
![]() by sluckey |
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290AX wiring with a Champ 600 reissue
Started by JPK |
4 Replies
2226 Views |
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8 Replies
2733 Views |
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Revisit- Fender Super Twin- New Project
Started by pbman1953 |
14 Replies
3358 Views |
![]() by pbman1953 |
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3 Replies
2070 Views |
![]() by BrainDeadAmps |
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23 Replies
4606 Views |
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5 Replies
2324 Views |
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14 Replies
3979 Views |
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AB764 Vibrochamp build questions
Started by J3ona1 |
2 Replies
1969 Views |
![]() by J3ona1 |
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Another PR build post with questions…
Started by Jalmeida |
1 Replies
1709 Views |
![]() by sluckey |
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Need help with something wierd
Started by RoninAudio |
6 Replies
2411 Views |
![]() by RoninAudio |
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6 Replies
2756 Views |
![]() by JPK |
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New 5E3 build bias check - am I ok?
Started by JPK |
10 Replies
3248 Views |
![]() by Voxbox |
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Changing this schematic presence control
Started by dude |
8 Replies
3274 Views |
![]() by dude |
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Output transformer ringing
Started by Esquirefreak |
0 Replies
1802 Views |
![]() by Esquirefreak |
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Amp Projects
Started by Lectroid |
19 Replies
4990 Views |
![]() by PRR |
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11 Replies
3333 Views |
![]() by kagliostro |
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Cathode biased Blues Junior new project
Started by acheld |
13 Replies
4293 Views |
![]() by pdf64 |
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19 Replies
4794 Views |
![]() by bmccowan |
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Passive Effects Loop Implementation
Started by McAbe |
9 Replies
4236 Views |
![]() by pdf64 |
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3 Replies
2041 Views |
![]() by kagliostro |
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Power transformer wiring question
Started by Erik Aa |
23 Replies
5252 Views |
![]() by Erik Aa |
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59 Replies
64379 Views |
![]() by shooter |
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The danger of vacuum tubes
Started by isaac_teller |
5 Replies
2694 Views |
![]() by mresistor |
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Switch between 2 different output valves
Started by Paulycoo |
16 Replies
3649 Views |
![]() by kagliostro |
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7 Replies
2348 Views |
![]() by fdesalvo |
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parallel input jack wiring
Started by BrainDeadAmps |
2 Replies
1865 Views |
![]() by BrainDeadAmps |
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16 Replies
3665 Views |
![]() by BetterOffShred |
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AC10 Intensity in AC4? <<Solved>>
Started by dwinstonwood |
14 Replies
4108 Views |
![]() by dwinstonwood |
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29 Replies
5306 Views |
![]() by JPK |
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Howling Feedback in Reveb Recovery
Started by jewishjay |
5 Replies
2548 Views |
![]() by GroundhogKen |
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12 Replies
3434 Views |
![]() by Williamblake |
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15 Replies
11005 Views |
![]() by kagliostro |
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Vox AC4 question. Need explanations.
Started by johngovan |
9 Replies
3083 Views |
![]() by kagliostro |
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10 Replies
3456 Views |
![]() by fkitch |
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7 Replies
2934 Views |
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2 Replies
2082 Views |
![]() by acheld |
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9 Replies
3186 Views |
![]() by HotBluePlates |
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Steve Luckey November project
Started by isaac_teller |
3 Replies
1983 Views |
![]() by kagliostro |
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Any issues with this laylout
Started by dude |
12 Replies
3295 Views |
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15 Replies
5286 Views |
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16 Replies
4292 Views |
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1M value for Treble pot.
Started by Mr.Death |
2 Replies
1886 Views |
![]() by Mr.Death |
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11 Replies
3633 Views |
![]() by tubeswell |
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Plate Resistor Type Question
Started by dragonbat13 |
3 Replies
2024 Views |
![]() by tubeswell |
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Coupling capacitors
Started by Mr.Death |
3 Replies
2234 Views |
![]() by PRR |
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Leslie 45cab/47 power amp
Started by Willabe |
9 Replies
4925 Views |
![]() by PRR |
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Hoffman Plexi 50 power supply
Started by Sergiouliana |
20 Replies
4607 Views |
![]() by pdf64 |
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Output Transformer calculation
Started by Williamblake |
2 Replies
2428 Views |
![]() by Williamblake |
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Adding some bottom end to an AX84 High Octane
Started by JPK |
10 Replies
3800 Views |
![]() by JPK |
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