Welcome To the Hoffman Amplifiers Forum
June 09, 2026, 06:40:21 pm
Welcome To the Hoffman Amplifiers ForumJune 09, 2026, 06:40:21 pm | ||
| Subject / Started by | Replies / Views | Last post  |
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| Jonas and 27 Guests are viewing this board. | ||||
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1992 peavy mark vi bass amp repair
Started by Snake5150 |
6 Replies
4946 Views |
September 17, 2025, 11:14:01 pmby glass54 |
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Classic 50 volume reduction
Started by proaudioguy |
3 Replies
4517 Views |
September 17, 2025, 08:15:19 pm by DeepBias |
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Kagliostro low cut switch
Started by Jonas |
3 Replies
4593 Views |
September 16, 2025, 04:03:09 pm by Jonas |
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Inductor EQ
Started by hylaphone |
10 Replies
6715 Views |
September 16, 2025, 01:59:10 pm by hylaphone |
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13 Replies
6683 Views |
September 16, 2025, 12:09:23 pm by HotBluePlates |
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School me on triode-strapped pentodes
Started by jacobarber |
11 Replies
6359 Views |
September 15, 2025, 02:20:05 pm by jacobarber |
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Fender Silverface Front Panel
Started by jy67 |
1 Replies
3917 Views |
September 15, 2025, 09:31:50 am by dogburn |
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No bias Raw voltage.
Started by TonyM |
5 Replies
4716 Views |
September 15, 2025, 04:55:24 am by Merlin |
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What Is this circuit ???
Started by kagliostro |
3 Replies
3621 Views |
September 15, 2025, 12:58:25 am by kagliostro |
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1953 pro amp 5C5 circuit
Started by centervolume |
9 Replies
6404 Views |
September 14, 2025, 06:52:54 pm by HotBluePlates |
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zener diode voltage drop
Started by tubenit |
4 Replies
3039 Views |
September 14, 2025, 04:01:22 pm by kagliostro |
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Troubleshooting a new build amp
Started by Wardy |
13 Replies
5618 Views |
September 14, 2025, 01:27:45 pm by Wardy |
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Need opinions on the Stout w/Reverb
Started by sjcasas |
45 Replies
14897 Views |
September 13, 2025, 08:45:46 pm by dogburn |
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7 Replies
4581 Views |
September 13, 2025, 01:34:01 pm by Graydigger |
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Deluxe 5E3 tone stack
Started by Lectroid |
15 Replies
6825 Views |
September 13, 2025, 12:29:59 pm by Lectroid |
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Sovtek MG50H
Started by Ampman33 |
4 Replies
3918 Views |
September 13, 2025, 12:01:22 pm by Ampman33 |
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22 Replies
6868 Views |
September 12, 2025, 02:13:18 pm by Trenchard_UK |
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7 Replies
4477 Views |
September 12, 2025, 12:20:54 pm by Bash |
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Switching cap across plate resistor
Started by Sonny ReVerb |
2 Replies
5006 Views |
September 12, 2025, 06:58:43 am by Sonny ReVerb |
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4 Replies
3597 Views |
September 11, 2025, 05:06:09 pm by mxrshiver |
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4 Replies
3698 Views |
September 10, 2025, 06:13:05 am by kagliostro |
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48 Replies
16310 Views |
September 10, 2025, 04:12:11 am by tubeswell |
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4 Replies
3488 Views |
September 09, 2025, 11:36:10 am by wsscott |
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one-tube-reverbers
Started by Bieworm |
2 Replies
3885 Views |
September 09, 2025, 04:57:07 am by tubenit |
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5 Replies
4020 Views |
September 07, 2025, 01:54:48 pm by Lectroid |
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5879 tube data sheet question
Started by tubenit |
5 Replies
4456 Views |
September 06, 2025, 12:31:01 pm by DummyLoad |
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192 Replies
45409 Views |
September 05, 2025, 02:58:10 pm by wsscott |
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Bias Wiggle Tremolo with 7591?
Started by dwinstonwood |
4 Replies
3245 Views |
September 04, 2025, 12:49:55 pm by dwinstonwood |
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Hiwatt DR103 FX loop
Started by SoundCity85 |
37 Replies
21060 Views |
September 03, 2025, 03:43:24 pm by wavley |
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3 Replies
3417 Views |
September 03, 2025, 11:35:42 am by Bieworm |
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25 Replies
7749 Views |
September 02, 2025, 06:20:08 am by Merlin |
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Reverb Tone Shifting with Dwell knob
Started by Lectroid |
14 Replies
5860 Views |
September 01, 2025, 02:48:23 pm by stratomaster |
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Hum in 5E3
Started by FREYES_7 |
11 Replies
5087 Views |
September 01, 2025, 02:33:58 pm by mresistor |
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Pre-Amp Anode Voltage Ibanez Thermion
Started by philschl |
3 Replies
2987 Views |
September 01, 2025, 06:14:17 am by philschl |
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63 Replies
21883 Views |
September 01, 2025, 01:52:26 am by Avraxas |
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What is this, a local NFB ??
Started by kagliostro |
4 Replies
2839 Views |
August 31, 2025, 10:40:26 am by kagliostro |
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18 Replies
5619 Views |
August 30, 2025, 08:26:31 pm by TIMBO |
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Resistor identification
Started by 1Ab |
21 Replies
6659 Views |
August 30, 2025, 01:30:46 pm by 1Ab |
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5 Replies
3527 Views |
August 29, 2025, 10:20:06 pm by stratomaster |
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Cathodyne bias problem
Started by scstill |
2 Replies
3000 Views |
August 28, 2025, 05:04:06 pm by scstill |
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15 Replies
4643 Views |
August 28, 2025, 09:41:21 am by Willabe |
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20 Replies
8501 Views |
August 28, 2025, 03:33:36 am by tubeswell |
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22 Replies
5059 Views |
August 27, 2025, 01:24:10 pm by Platefire |
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HR DeVille number two.
Started by Bluebark |
20 Replies
5288 Views |
August 27, 2025, 09:11:53 am by Bluebark |
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Sound City 120 is in a bad way
Started by Williamblake |
49 Replies
20277 Views |
August 26, 2025, 02:56:11 pm by Williamblake |
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12AZ7 as DC Cathode Follower?
Started by dwinstonwood |
3 Replies
2701 Views |
August 26, 2025, 11:32:16 am by tubeswell |
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Fender Bassman AC568 issue
Started by retrorod |
8 Replies
3332 Views |
August 26, 2025, 05:54:29 am by retrorod |
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Mic Preamp Power Supply Questions
Started by Jonas |
6 Replies
3482 Views |
August 25, 2025, 06:58:50 pm by Jonas |
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33 Replies
19497 Views |
August 25, 2025, 04:42:10 pm by tubeswell |
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Bugera 333XL-212 power amp stage problem
Started by Carlito |
6 Replies
3566 Views |
August 25, 2025, 09:59:29 am by scstill |
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