Welcome To the Hoffman Amplifiers ForumOctober 22, 2025, 12:23:48 am | ||
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177 Replies
256313 Views |
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Relay circuit & layout board & ft switch
Started by tubenit |
41 Replies
86728 Views |
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162 Replies
218838 Views |
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Wire Jacket Voltage post
Started by EL34 |
7 Replies
20330 Views |
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53 Replies
86507 Views |
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Trem-o-nator (Sluckey's)
Started by tubenit |
4 Replies
17333 Views |
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8 Replies
44252 Views |
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Mosfet cathode follower
Started by tubenit |
7 Replies
28763 Views |
![]() by sluckey |
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Master Volume
Started by NannerPuddin |
21 Replies
48448 Views |
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VVR and cathode biased amps
Started by tubenit |
25 Replies
68090 Views |
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Amp building steps and procedure
Started by tubenit |
1 Replies
15563 Views |
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Hoffman AB763 Tremolo 6L6 mods?
Started by bnwitt |
26 Replies
71743 Views |
![]() by stringbender.dk |
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6 Replies
21892 Views |
![]() by tubenit |
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Tube spacing in chassis
Started by tubenit |
4 Replies
21517 Views |
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How to trace out a circuit problem
Started by EL34 |
0 Replies
76409 Views |
![]() by EL34 |
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zener diode trick to lower B+ volts
Started by tubenit |
16 Replies
42699 Views |
![]() by wdelaney72 |
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76 Replies
86081 Views |
![]() by passaloutre |
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Chassis plug fuses
Started by amitay3333 |
1 Replies
8676 Views |
![]() by acheld |
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Pentode - triode switch power tubes
Started by tubenit |
0 Replies
8667 Views |
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(Archive) Frequently Asked Questions
Started by tbeck |
32 Replies
64117 Views |
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MOVED: Re: Adding 1-tube reverb
Started by tubenit |
0 Replies
9817 Views |
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6BM8 reverb (capacitor driven & other)
Started by tubenit |
9 Replies
17080 Views |
![]() by DummyLoad |
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Hoffman Plexi 50W Grid Stoppers on V1
Started by mike123 |
5 Replies
14959 Views |
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Control Panel Template - SmartDraw
Started by purpletele |
13 Replies
20066 Views |
![]() by purpletele |
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4 knob tone stack
Started by tubenit |
12 Replies
24474 Views |
![]() by kagliostro |
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5E3 with Choke Voltage Chart
Started by EL34 |
6 Replies
76659 Views |
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Fender face plates
Started by bassmoe |
2 Replies
11799 Views |
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(Archive) Coupling Capacitors
Started by radar01 |
11 Replies
52587 Views |
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6V6 to 6BM8 or EL84 socket adaptor
Started by tubenit |
5 Replies
17105 Views |
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90 Replies
115464 Views |
![]() by kagliostro |
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figuring approx. output wattage
Started by phsyconoodler |
13 Replies
29655 Views |
![]() by LHPcope |
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13 Replies
22810 Views |
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space between turrets
Started by richierick |
15 Replies
24836 Views |
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*umbolt lite done.
Started by phsyconoodler « 1 2 » |
82 Replies
63706 Views |
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(Archive) REVIBE
Started by beatroot |
16 Replies
48269 Views |
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115 Replies
113582 Views |
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Choke input filters
Started by Geezer |
14 Replies
54945 Views |
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10 Replies
46162 Views |
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Board Members- Equipment / Influences
Started by EL34 |
0 Replies
69917 Views |
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A question for PHAT amps
Started by EL34 |
0 Replies
70572 Views |
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Nice Marshall Circuits link
Started by EL34 |
0 Replies
70679 Views |
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0 Replies
72620 Views |
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Phase Inverter Questions
Started by EL34 |
0 Replies
70411 Views |
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output impedance
Started by EL34 |
0 Replies
75165 Views |
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5E3 6L6 conversion suggested OT??
Started by EL34 |
0 Replies
72345 Views |
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0 Replies
71690 Views |
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Modded phase inverter is motorboating  
Started by EL34 |
0 Replies
73130 Views |
![]() by EL34 |
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100 ohm resister vs heater center tap  
Started by EL34 |
0 Replies
74359 Views |
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0 Replies
74090 Views |
![]() by EL34 |
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