Welcome To the Hoffman Amplifiers Forum
April 25, 2026, 10:29:05 pm
Welcome To the Hoffman Amplifiers ForumApril 25, 2026, 10:29:05 pm | ||
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| 0 Members and 34 Guests are viewing this board. | ||||
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Using an External Cab for Fender '68 Custom Vibro Champ Reverb
Started by reginom72 |
4 Replies
4872 Views |
July 08, 2022, 11:38:14 pmby PRR |
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12vdc heaters elevated?
Started by joesatch |
12 Replies
5217 Views |
July 08, 2022, 02:56:51 pm by PRR |
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3 Replies
3752 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
3652 Views |
July 08, 2022, 12:48:04 pm by reginom72 |
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5 Replies
4208 Views |
July 08, 2022, 12:42:56 am by kagliostro |
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Ampeg Gemini 1 OT identification
Started by ndross475 |
2 Replies
3499 Views |
July 07, 2022, 04:09:28 pm by sluckey |
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diodes/rectifier switch
Started by isaac_teller |
8 Replies
5035 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
3919 Views |
July 05, 2022, 06:48:13 pm by kristianf |
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Bias circuit question.
Started by joesatch |
4 Replies
4048 Views |
July 05, 2022, 05:46:19 pm by nandrewjackson |
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20 Replies
7871 Views |
July 05, 2022, 07:09:00 am by pdf64 |
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AMPEG B15 issue
Started by Colas LeGrippa |
4 Replies
3943 Views |
July 04, 2022, 07:24:50 pm by SoundmasterG |
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ECC83 issue, high voltage output
Started by hozone |
6 Replies
4320 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
3932 Views |
July 04, 2022, 01:51:35 am by DummyLoad |
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Deluxe Reverb standby switch
Started by Lectroid |
16 Replies
8389 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
4377 Views |
July 03, 2022, 07:00:11 pm by dwinstonwood |
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Installing a choke??
Started by Lectroid |
17 Replies
6563 Views |
July 03, 2022, 12:07:16 pm by Lectroid |
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Standalone preamp question.
Started by dragonbat13 |
2 Replies
3719 Views |
July 03, 2022, 08:56:45 am by tmknight |
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2 Replies
4381 Views |
July 03, 2022, 08:43:45 am by pdf64 |
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pedal pcb cap polarity markings
Started by joesatch |
8 Replies
5292 Views |
July 02, 2022, 11:14:41 am by kagliostro |
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purple wire Antek PT
Started by joesatch |
2 Replies
3600 Views |
July 01, 2022, 07:39:56 pm by ok_state_blues |
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Choke specifications
Started by acheld |
9 Replies
5900 Views |
June 30, 2022, 05:40:30 pm by mresistor |
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2 Replies
3847 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
4249 Views |
June 30, 2022, 07:37:00 am by Swampertech |
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Blue illuminated rocker switch source?
Started by joesatch |
11 Replies
5381 Views |
June 29, 2022, 02:24:41 pm by PRR |
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VOX AC30 Power Lamp Flickering
Started by dpm309 |
3 Replies
3647 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
5906 Views |
June 28, 2022, 09:19:20 am by Lectroid |
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8 Replies
4948 Views |
June 26, 2022, 10:40:19 am by kagliostro |
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16 Replies
7173 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
3349 Views |
June 24, 2022, 10:31:39 am by uki |
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85 Replies
22752 Views |
June 24, 2022, 06:57:01 am by Eythor |
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6 Replies
5040 Views |
June 23, 2022, 03:33:02 pm by smilan |
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10 Replies
6189 Views |
June 23, 2022, 12:17:28 pm by tubeswell |
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output transformer compatibility
Started by j_bruce |
3 Replies
3563 Views |
June 23, 2022, 11:37:00 am by HotBluePlates |
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NFB tap question
Started by joesatch |
1 Replies
3412 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
4462 Views |
June 22, 2022, 11:53:51 pm by tubeswell |
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3 Replies
4694 Views |
June 22, 2022, 03:08:28 pm by Latole |
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4 Replies
5271 Views |
June 22, 2022, 04:49:53 am by nemoi |
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one-knob tone stack
Started by burt_toast |
12 Replies
9186 Views |
June 21, 2022, 11:45:44 pm by thetragichero |
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10 Replies
6351 Views |
June 21, 2022, 04:06:11 pm by nandrewjackson |
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Transistor used for tremolo?
Started by BadCatCubII |
8 Replies
4852 Views |
June 21, 2022, 09:36:12 am by BadCatCubII |
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Ampeg V4B 1971
Started by Colas LeGrippa |
13 Replies
4761 Views |
June 20, 2022, 07:59:45 pm by owen |
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Cascode?
Started by dragonbat13 |
1 Replies
3401 Views |
June 20, 2022, 07:50:35 pm by HotBluePlates |
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11 Replies
5294 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
4456 Views |
June 20, 2022, 12:10:19 pm by frankenxtein |
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Russian substitute for 12AT7
Started by isaac_teller |
2 Replies
4209 Views |
June 20, 2022, 09:05:30 am by isaac_teller |
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Hammond Rebuild Layout Advice
Started by jordan86 |
3 Replies
3397 Views |
June 18, 2022, 10:36:30 pm by glass54 |
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Magnatone Varsity Reverb
Started by luthiernc |
1 Replies
3251 Views |
June 18, 2022, 05:09:37 pm by tubeswell |
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Raising the 1M resistor on the input.
Started by valvetones |
7 Replies
4396 Views |
June 18, 2022, 07:08:31 am by pdf64 |
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Is this idea crazy? What would you do?
Started by Diverted |
6 Replies
3979 Views |
June 17, 2022, 04:24:57 pm by PRR |
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22 Replies
7972 Views |
June 17, 2022, 04:10:54 pm by sluckey |
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