Welcome To the Hoffman Amplifiers ForumApril 26, 2026, 11:06:29 am | ||
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SF Vibrolux redplating, losing voltage
Started by AxeAmpTN |
11 Replies
5418 Views |
by AxeAmpTN |
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Split Plate Load LTPI el84
Started by cboysen |
0 Replies
2729 Views |
by cboysen |
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Filter Capacitor Tolerances
Started by jaster55 |
6 Replies
3850 Views |
by sluckey |
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HV filtering using stby switch
Started by dude |
28 Replies
7466 Views |
by Colas LeGrippa |
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5 Replies
3941 Views |
by TubeGeek |
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13 Replies
5538 Views |
by shooter |
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OT impedance question
Started by daveyajd |
10 Replies
5130 Views |
by kagliostro |
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Bias balance pot not functioning
Started by playindabluz |
7 Replies
4279 Views |
by DummyLoad |
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13 Replies
6350 Views |
by DummyLoad |
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Reverb feeding back
Started by Fiat_cc |
4 Replies
3537 Views |
by sluckey |
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New Princeton Reverb build PI issue
Started by Apexelectric |
45 Replies
13464 Views |
by Apexelectric |
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Firefly Power Amp Help
Started by johngovan |
9 Replies
5122 Views |
by johngovan |
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67 Replies
20655 Views |
by shooter |
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Preamp Bias vary Trem in AB763?
Started by guitylerham |
9 Replies
5681 Views |
by guitylerham |
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10 Replies
5856 Views |
by mresistor |
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Minimum gr1 resistance
Started by Colas LeGrippa |
7 Replies
3938 Views |
by kagliostro |
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10 Replies
5108 Views |
by glass54 |
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Cap foil direction
Started by daveyajd |
13 Replies
5897 Views |
by mresistor |
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Bias for ECC99 Mini Vox AC30?
Started by roseblood11 |
9 Replies
6453 Views |
by kagliostro |
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75 Replies
21996 Views |
by Jennings |
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One chassis ground or two?
Started by tony321owen |
16 Replies
8521 Views |
by jjasilli |
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4 Replies
4349 Views |
by kagliostro |
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9 Replies
4925 Views |
by Backwoods Joe |
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51 Replies
16609 Views |
by Fiat_cc |
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Grid bias w/tremolo?
Started by yorgle |
24 Replies
9443 Views |
by yorgle |
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Marshall JCM800 50MV w/ reverb repair
Started by Opry Audio |
4 Replies
3731 Views |
by nandrewjackson |
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21 Replies
8098 Views |
by sluckey |
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10 Replies
6173 Views |
by pdf64 |
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Cathode bypass cap orientation question
Started by Tapsnap |
12 Replies
6474 Views |
by pdf64 |
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11 Replies
6959 Views |
by cubis |
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11 Replies
4287 Views |
by centervolume |
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Grounding 6V6 Plexi
Started by leegold |
9 Replies
4696 Views |
by glass54 |
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Gibson EH-185 6J7 version
Started by centervolume |
40 Replies
12080 Views |
by bmccowan |
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Wiring 5e3 combo to use as a speaker cab
Started by mebond11 |
3 Replies
3096 Views |
by mebond11 |
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2 x kt88 power amp
Started by AxelKay |
36 Replies
14898 Views |
by 66Strat |
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12 Replies
6211 Views |
by sluckey |
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advice on dumble clone
Started by vampwizzard |
4 Replies
3840 Views |
by sluckey |
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8 Replies
5457 Views |
by kagliostro |
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14 Replies
8213 Views |
by jjasilli |
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Gauge wire on PT
Started by dude |
6 Replies
3169 Views |
by dude |
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Quick Tremor-lator Question
Started by yorgle |
2 Replies
2990 Views |
by yorgle |
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Add adjustable bias to Hiwatt DR504
Started by eahudimac |
4 Replies
6140 Views |
by eahudimac |
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Tube reverb project
Started by Colas LeGrippa |
24 Replies
8274 Views |
by sluckey |
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Lead on cap can smoking and sizzling
Started by dude |
4 Replies
3849 Views |
by dude |
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3 channel preamp hum issues
Started by Captain chunkulus « 1 2 3 » |
114 Replies
33387 Views |
by Captain chunkulus |
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Red-Nek Circuity PortaBuzz B-15
Started by bnwitt |
4 Replies
3199 Views |
by RWood |
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Vox AC-15 build reverb question
Started by shaun |
10 Replies
5537 Views |
by shaun |
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9 Replies
8656 Views |
by kagliostro |
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2 Replies
3458 Views |
by 1blueheron |
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Lacing turret board and RF interference
Started by mebond11 |
2 Replies
2860 Views |
by mebond11 |
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