Welcome To the Hoffman Amplifiers Forum
September 06, 2025, 09:22:26 am
Welcome To the Hoffman Amplifiers ForumSeptember 06, 2025, 09:22:26 am | ||
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| 0 Members and 21 Guests are viewing this board. | ||||
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Schematic question
Started by Vil |
7 Replies
2387 Views |
July 11, 2022, 09:45:18 amby sluckey |
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Sluckey matchless board
Started by ok_state_blues |
4 Replies
2186 Views |
July 10, 2022, 05:03:30 pm by ok_state_blues |
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Blackstar HT-20R
Started by EL34 |
8 Replies
3682 Views |
July 10, 2022, 12:35:50 pm by rake |
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Gibson GA-5 build - good till 9.5
Started by Keyboy |
5 Replies
2766 Views |
July 10, 2022, 06:04:35 am by ShoemanGB |
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3 Replies
2045 Views |
July 09, 2022, 11:19:23 am by sluckey |
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Using an External Cab for Fender '68 Custom Vibro Champ Reverb
Started by reginom72 |
4 Replies
2822 Views |
July 08, 2022, 11:38:14 pm by PRR |
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12vdc heaters elevated?
Started by joesatch |
12 Replies
3196 Views |
July 08, 2022, 02:56:51 pm by PRR |
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3 Replies
2125 Views |
July 08, 2022, 02:53:50 pm by PRR |
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1974 Fender Twin Reverb (Master Volume) Circuit Question
Started by reginom72 |
0 Replies
1922 Views |
July 08, 2022, 12:48:04 pm by reginom72 |
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5 Replies
2287 Views |
July 08, 2022, 12:42:56 am by kagliostro |
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Ampeg Gemini 1 OT identification
Started by ndross475 |
2 Replies
1807 Views |
July 07, 2022, 04:09:28 pm by sluckey |
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diodes/rectifier switch
Started by isaac_teller |
8 Replies
2520 Views |
July 07, 2022, 12:32:40 pm by isaac_teller |
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Vox AC15H1TV - Hum and channel bleed
Started by kristianf |
0 Replies
2170 Views |
July 05, 2022, 06:48:13 pm by kristianf |
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Bias circuit question.
Started by joesatch |
4 Replies
2151 Views |
July 05, 2022, 05:46:19 pm by nandrewjackson |
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20 Replies
4262 Views |
July 05, 2022, 07:09:00 am by pdf64 |
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AMPEG B15 issue
Started by Colas LeGrippa |
4 Replies
2072 Views |
July 04, 2022, 07:24:50 pm by SoundmasterG |
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ECC83 issue, high voltage output
Started by hozone |
6 Replies
2322 Views |
July 04, 2022, 01:26:03 pm by hozone |
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6JB5 Build Docs for isaac_teller
Started by DummyLoad |
3 Replies
2018 Views |
July 04, 2022, 01:51:35 am by DummyLoad |
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Deluxe Reverb standby switch
Started by Lectroid |
16 Replies
4840 Views |
July 03, 2022, 09:40:47 pm by thetragichero |
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Vampower Mk 1 100 watt head
Started by dwinstonwood |
0 Replies
2264 Views |
July 03, 2022, 07:00:11 pm by dwinstonwood |
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Installing a choke??
Started by Lectroid |
17 Replies
3660 Views |
July 03, 2022, 12:07:16 pm by Lectroid |
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Standalone preamp question.
Started by dragonbat13 |
2 Replies
1807 Views |
July 03, 2022, 08:56:45 am by tmknight |
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2 Replies
2274 Views |
July 03, 2022, 08:43:45 am by pdf64 |
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pedal pcb cap polarity markings
Started by joesatch |
8 Replies
2530 Views |
July 02, 2022, 11:14:41 am by kagliostro |
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purple wire Antek PT
Started by joesatch |
2 Replies
1931 Views |
July 01, 2022, 07:39:56 pm by ok_state_blues |
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Choke specifications
Started by acheld |
9 Replies
3219 Views |
June 30, 2022, 05:40:30 pm by mresistor |
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2 Replies
1907 Views |
June 30, 2022, 01:56:14 pm by rundgrenrules |
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4-band EQ for 763 type circuit
Started by Swampertech |
0 Replies
1861 Views |
June 30, 2022, 07:37:00 am by Swampertech |
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Blue illuminated rocker switch source?
Started by joesatch |
11 Replies
3100 Views |
June 29, 2022, 02:24:41 pm by PRR |
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VOX AC30 Power Lamp Flickering
Started by dpm309 |
3 Replies
1906 Views |
June 29, 2022, 07:44:00 am by dwinstonwood |
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Vibrato sound on a non-vibrato amp?
Started by DuaneOh |
12 Replies
3187 Views |
June 28, 2022, 09:19:20 am by Lectroid |
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8 Replies
2982 Views |
June 26, 2022, 10:40:19 am by kagliostro |
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16 Replies
4129 Views |
June 25, 2022, 03:18:17 pm by bbmade |
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New Build 6v6 Tweed Twin HP
Started by JGk |
2 Replies
1767 Views |
June 24, 2022, 10:31:39 am by uki |
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85 Replies
13899 Views |
June 24, 2022, 06:57:01 am by Eythor |
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6 Replies
3139 Views |
June 23, 2022, 03:33:02 pm by smilan |
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10 Replies
3617 Views |
June 23, 2022, 12:17:28 pm by tubeswell |
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output transformer compatibility
Started by j_bruce |
3 Replies
1896 Views |
June 23, 2022, 11:37:00 am by HotBluePlates |
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NFB tap question
Started by joesatch |
1 Replies
1798 Views |
June 23, 2022, 09:05:16 am by sluckey |
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Old Ampro PP 6v6 center tap question
Started by goldstache |
10 Replies
2511 Views |
June 22, 2022, 11:53:51 pm by tubeswell |
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3 Replies
2276 Views |
June 22, 2022, 03:08:28 pm by Latole |
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4 Replies
2884 Views |
June 22, 2022, 04:49:53 am by nemoi |
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one-knob tone stack
Started by burt_toast |
12 Replies
6411 Views |
June 21, 2022, 11:45:44 pm by thetragichero |
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10 Replies
3962 Views |
June 21, 2022, 04:06:11 pm by nandrewjackson |
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Transistor used for tremolo?
Started by BadCatCubII |
8 Replies
2700 Views |
June 21, 2022, 09:36:12 am by BadCatCubII |
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Ampeg V4B 1971
Started by Colas LeGrippa |
13 Replies
2672 Views |
June 20, 2022, 07:59:45 pm by owen |
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Cascode?
Started by dragonbat13 |
1 Replies
1778 Views |
June 20, 2022, 07:50:35 pm by HotBluePlates |
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11 Replies
3002 Views |
June 20, 2022, 05:11:59 pm by shooter |
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Haven't done anything to this Zenith
Started by frankenxtein |
5 Replies
2447 Views |
June 20, 2022, 12:10:19 pm by frankenxtein |
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Russian substitute for 12AT7
Started by isaac_teller |
2 Replies
2497 Views |
June 20, 2022, 09:05:30 am by isaac_teller |
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