Welcome To the Hoffman Amplifiers ForumJanuary 24, 2026, 08:54:20 pm | ||
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help with old radio????
Started by zapped |
11 Replies
5688 Views |
by PRR |
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1939 guitar amp
Started by PRR |
29 Replies
12053 Views |
by tubeswell |
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??? Amp Model
Started by plexi50 |
15 Replies
8375 Views |
by bigsbybender |
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Built A Sch 40 GA-5 Today
Started by shortfuse |
23 Replies
8382 Views |
by shortfuse |
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rectifier heater question
Started by bnew63 |
2 Replies
3014 Views |
by bnew63 |
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5 Replies
4487 Views |
by Willabe |
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7591 conversion to 6V6
Started by oldhippy |
25 Replies
23372 Views |
by oldhippy |
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Alamo Electra 2570 Need a little help
Started by dude |
1 Replies
6237 Views |
by dude |
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question regarding modifying pot value
Started by 12AX7 |
5 Replies
5489 Views |
by PRR |
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Verlage Amplifier troubles
Started by TubeGeek |
4 Replies
4918 Views |
by PRR |
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triode / pentode
Started by Colas LeGrippa |
32 Replies
32746 Views |
by HotBluePlates |
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7 Replies
5234 Views |
by kagliostro |
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choke help
Started by ernie_jr |
7 Replies
4610 Views |
by HotBluePlates |
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negative feedback question
Started by navdave |
9 Replies
5717 Views |
by printer2 |
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NTE558 diode
Started by schoolie |
4 Replies
3116 Views |
by schoolie |
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HEADPHONE tube amp
Started by Colas LeGrippa |
13 Replies
7736 Views |
by Colas LeGrippa |
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Inpedance Mismatch Question
Started by blown240 |
14 Replies
6290 Views |
by jojokeo |
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Heater supply question
Started by John |
2 Replies
2718 Views |
by John |
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5 Replies
5243 Views |
by kagliostro |
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Master Volume On 100 Watt SF Twin
Started by plexi50 |
6 Replies
3858 Views |
by chuggy |
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internal connection
Started by jeff |
20 Replies
8158 Views |
by tonewood |
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OPT questions
Started by bnew63 |
6 Replies
4262 Views |
by PRR |
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vintage diodes
Started by embotone |
2 Replies
2862 Views |
by PRR |
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Question about Hoffman 5f6a bias circuit
Started by schoolie |
22 Replies
8522 Views |
by Ed_Chambley |
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Rating of pots as variable resistors
Started by jeff |
5 Replies
3199 Views |
by PRR |
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1 Replies
3686 Views |
by topbrent |
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Hot Rod deluxe problem
Started by LooseChange |
3 Replies
2915 Views |
by birt |
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9 Replies
4581 Views |
by jeff |
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12AX7's enhance cap question
Started by bluesbear |
6 Replies
4064 Views |
by tubenit |
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Just build Deluxe Reverb
Started by kwm488 |
7 Replies
4867 Views |
by birt |
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36 Replies
21403 Views |
by Platefire |
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New Cap Tweak
Started by tubenit |
0 Replies
2920 Views |
by tubenit |
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Treble bleed cap value calculation?
Started by 12AX7 |
1 Replies
5075 Views |
by PRR |
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grid stopper vs voltage divider
Started by 12AX7 |
3 Replies
6331 Views |
by HotBluePlates |
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2 Replies
3466 Views |
by SleepLess |
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amplifier power calculation
Started by Colas LeGrippa |
10 Replies
15242 Views |
by jjasilli |
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brand new (mostly)
Started by Jamesbarner |
5 Replies
3407 Views |
by TIMBO |
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vibrato circuit wanted !
Started by Colas LeGrippa |
6 Replies
3304 Views |
by panhead |
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8 Replies
4865 Views |
by kagliostro |
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11 Replies
5173 Views |
by sluckey |
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PPMIV In 5f6a Switchable
Started by Ed_Chambley |
23 Replies
8826 Views |
by Ed_Chambley |
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VVR installation
Started by Colas LeGrippa |
7 Replies
4599 Views |
by Colas LeGrippa |
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21 Replies
7214 Views |
by Jennings |
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Lay down Fender PT mounting.
Started by Willabe |
7 Replies
3596 Views |
by stingray_65 |
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TVM PK200/J P.A. tube amp.
Started by chocopower |
4 Replies
3975 Views |
by chocopower |
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please teach me how can i fix it
Started by kwm488 |
6 Replies
4661 Views |
by Jack1962 |
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Reverb Circuit
Started by Jack1962 |
6 Replies
4799 Views |
by Jack1962 |
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Tweed Overdrive w/ 2 CF
Started by tubenit |
43 Replies
14711 Views |
by TIMBO |
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In the Christmas Spirit
Started by punkykatt |
17 Replies
8488 Views |
by plexi50 |
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13 Replies
9662 Views |
by Ed_Chambley |
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