Welcome To the Hoffman Amplifiers ForumJanuary 23, 2026, 09:41:48 pm | ||
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9 Replies
3726 Views |
by HotBluePlates |
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Steve Luckey November project
Started by isaac_teller |
3 Replies
2314 Views |
by kagliostro |
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Any issues with this laylout
Started by dude |
12 Replies
4120 Views |
by sluckey |
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15 Replies
6491 Views |
by kagliostro |
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16 Replies
5151 Views |
by Jennings |
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1M value for Treble pot.
Started by Mr.Death |
2 Replies
2338 Views |
by Mr.Death |
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11 Replies
4471 Views |
by tubeswell |
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Plate Resistor Type Question
Started by dragonbat13 |
3 Replies
2538 Views |
by tubeswell |
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Coupling capacitors
Started by Mr.Death |
3 Replies
2578 Views |
by PRR |
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Leslie 45cab/47 power amp
Started by Willabe |
9 Replies
6022 Views |
by PRR |
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Hoffman Plexi 50 power supply
Started by Sergiouliana |
20 Replies
5567 Views |
by pdf64 |
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Output Transformer calculation
Started by Williamblake |
2 Replies
3026 Views |
by Williamblake |
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Adding some bottom end to an AX84 High Octane
Started by JPK |
10 Replies
4746 Views |
by JPK |
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spongy feel in preamp
Started by 12AX7 |
21 Replies
5978 Views |
by tubeswell |
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2 Replies
2615 Views |
by MWaldorf |
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3 Replies
3602 Views |
by sluckey |
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Bias question
Started by Mr.Death |
6 Replies
2796 Views |
by Mr.Death |
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8 Replies
3445 Views |
by sluckey |
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Grommet size applications
Started by Blooze |
11 Replies
4424 Views |
by Blooze |
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1984 Mesa Mark II C+ Power Tube Diodes
Started by plexi50 |
25 Replies
6655 Views |
by plexi50 |
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Hot and cold gain staging
Started by Mr.Death |
4 Replies
2886 Views |
by Mr.Death |
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35 Replies
9763 Views |
by DummyLoad |
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62 Replies
14157 Views |
by JPK |
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2 Replies
2621 Views |
by PRR |
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Philips 6411 PA tubeamp ground points
Started by kagliostro |
11 Replies
13870 Views |
by kjulhansen |
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choke question
Started by 12AX7 |
8 Replies
3237 Views |
by pdf64 |
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2 Replies
2446 Views |
by scottcurry13 |
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Danelectro Amp repair, low bass Ch2
Started by dmp |
22 Replies
5697 Views |
by dmp |
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4 Replies
3045 Views |
by J3ona1 |
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15 Replies
4859 Views |
by PRR |
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Are these tubes useful for amps?
Started by rafe |
16 Replies
6020 Views |
by scstill |
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Comparing bias trem circuits
Started by Esquirefreak |
5 Replies
3218 Views |
by tubeswell |
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Fender PA-100 Refurb
Started by davidb |
8 Replies
3936 Views |
by davidb |
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5 Replies
3249 Views |
by sluckey |
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5e8 preamp question.
Started by johngovan |
6 Replies
3827 Views |
by johngovan |
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Dual Triode Tube Testing, Curve Tracer
Started by W5FH |
2 Replies
2789 Views |
by HotBluePlates |
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Vox AC10 and AC15 100R EL84 resistors
Started by Jalmeida |
9 Replies
5407 Views |
by HotBluePlates |
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Mesa Bottle Rocket - Circuit ?s
Started by BrassElephant |
6 Replies
3493 Views |
by BrassElephant |
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25 Replies
9726 Views |
by Balticnoiseforge |
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8 Replies
4271 Views |
by punkykatt |
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AC30 screen and grid resistor values
Started by allstonma |
5 Replies
4614 Views |
by tubeswell |
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Everything Bias
Started by jim |
8 Replies
3734 Views |
by JPK |
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Marshall 9005 bias supply?
Started by Bubbastain |
18 Replies
6163 Views |
by sluckey |
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19 Replies
6989 Views |
by pdf64 |
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Crate VC 3112 caps
Started by rake |
1 Replies
2713 Views |
by Latole |
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3 Replies
2980 Views |
by CrocMule |
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Presence contol placement within NFB loop
Started by 12AX7 |
20 Replies
6500 Views |
by sluckey |
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4 Replies
4265 Views |
by maltikeks |
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4 Replies
2925 Views |
by EL34 |
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what does this 470k do?
Started by 12AX7 |
15 Replies
5075 Views |
by HotBluePlates |
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