Welcome To the Hoffman Amplifiers ForumApril 24, 2026, 07:43:08 pm | ||
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Relay circuit & layout board & ft switch
Started by tubenit |
43 Replies
111500 Views |
by acheld |
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182 Replies
306418 Views |
by Jesus Freak |
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162 Replies
259364 Views |
by jojokeo |
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54 Replies
131642 Views |
by catalin gramada |
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Wire Jacket Voltage post
Started by EL34 |
7 Replies
34888 Views |
by shooter |
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53 Replies
98061 Views |
by jojokeo |
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Trem-o-nator (Sluckey's)
Started by tubenit |
4 Replies
19968 Views |
by tubenit |
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8 Replies
49205 Views |
by tubenit |
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Mosfet cathode follower
Started by tubenit |
7 Replies
33320 Views |
by sluckey |
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Master Volume
Started by NannerPuddin |
21 Replies
52899 Views |
by Papa Jim |
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VVR and cathode biased amps
Started by tubenit |
25 Replies
73491 Views |
by tubenit |
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Amp building steps and procedure
Started by tubenit |
1 Replies
25421 Views |
by Raybob |
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Hoffman AB763 Tremolo 6L6 mods?
Started by bnwitt |
26 Replies
77019 Views |
by stringbender.dk |
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6 Replies
25888 Views |
by tubenit |
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Tube spacing in chassis
Started by tubenit |
4 Replies
25232 Views |
by tubenit |
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How to trace out a circuit problem
Started by EL34 |
0 Replies
85147 Views |
by EL34 |
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zener diode trick to lower B+ volts
Started by tubenit |
16 Replies
48290 Views |
by wdelaney72 |
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76 Replies
100757 Views |
by passaloutre |
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Chassis plug fuses
Started by amitay3333 |
1 Replies
10551 Views |
by acheld |
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Pentode - triode switch power tubes
Started by tubenit |
0 Replies
15771 Views |
by tubenit |
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(Archive) Frequently Asked Questions
Started by tbeck |
32 Replies
69330 Views |
by sluckey |
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MOVED: Re: Adding 1-tube reverb
Started by tubenit |
0 Replies
18556 Views |
by tubenit |
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6BM8 reverb (capacitor driven & other)
Started by tubenit |
9 Replies
19515 Views |
by DummyLoad |
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Hoffman Plexi 50W Grid Stoppers on V1
Started by mike123 |
5 Replies
17427 Views |
by mike123 |
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Control Panel Template - SmartDraw
Started by purpletele |
13 Replies
23415 Views |
by purpletele |
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4 knob tone stack
Started by tubenit |
12 Replies
27567 Views |
by kagliostro |
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5E3 with Choke Voltage Chart
Started by EL34 |
6 Replies
80366 Views |
by super&plexi |
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Fender face plates
Started by bassmoe |
2 Replies
20590 Views |
by MoparWade |
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(Archive) Coupling Capacitors
Started by radar01 |
11 Replies
56225 Views |
by Voxbox |
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6V6 to 6BM8 or EL84 socket adaptor
Started by tubenit |
5 Replies
19705 Views |
by jojokeo |
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90 Replies
128051 Views |
by kagliostro |
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figuring approx. output wattage
Started by phsyconoodler |
13 Replies
33601 Views |
by LHPcope |
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13 Replies
26034 Views |
by EL34 |
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space between turrets
Started by richierick |
15 Replies
28782 Views |
by EL34 |
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*umbolt lite done.
Started by phsyconoodler « 1 2 » |
82 Replies
72147 Views |
by phsyconoodler |
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(Archive) REVIBE
Started by beatroot |
16 Replies
52903 Views |
by EL34 |
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115 Replies
126764 Views |
by Geezer |
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Choke input filters
Started by Geezer |
14 Replies
59197 Views |
by jjasilli |
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10 Replies
49728 Views |
by BriteLite |
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Board Members- Equipment / Influences
Started by EL34 |
0 Replies
72738 Views |
by EL34 |
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A question for PHAT amps
Started by EL34 |
0 Replies
73741 Views |
by EL34 |
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Nice Marshall Circuits link
Started by EL34 |
0 Replies
74046 Views |
by EL34 |
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0 Replies
75729 Views |
by EL34 |
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Phase Inverter Questions
Started by EL34 |
0 Replies
73304 Views |
by EL34 |
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output impedance
Started by EL34 |
0 Replies
78550 Views |
by EL34 |
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5E3 6L6 conversion suggested OT??
Started by EL34 |
0 Replies
75846 Views |
by EL34 |
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0 Replies
75377 Views |
by EL34 |
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Modded phase inverter is motorboating  
Started by EL34 |
0 Replies
76499 Views |
by EL34 |
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100 ohm resister vs heater center tap  
Started by EL34 |
0 Replies
77855 Views |
by EL34 |
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0 Replies
77582 Views |
by EL34 |
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