| Thread | Last Poster | Posts | Pages | Last Post | |
  | Setting Bias on Music Man Amps | Paul Huish | 119 | 1 | 08-29-13 04:28 am |
| Q-Initial Grid Bias Voltage Setting | Steve Kennedy | 2 | 1 | 04-01-02 06:33 pm |
| HD130R- Q- intermittant distortion | Steve Kennedy | 9 | 1 | 11-28-03 02:43 pm |
| Bass response on 2-10 65 | Steve Kennedy | 6 | 1 | 05-21-06 04:01 pm |
| MM 110-RD Fifty Combo Noise | Anonymous | 5 | 1 | 03-06-06 08:49 pm |
 | A Pair of HD210-130s | Curt | 5 | 1 | 06-03-02 06:49 pm |
| More Stupid Bias Questions. | TFL | 7 | 1 | 03-20-03 07:18 am |
| 112 RD-50 breakup on clean channel | Terry | 5 | 1 | 08-27-02 11:18 am |
| Low volume-have I lost a tube? | Mike Kaus | 12 | 1 | 04-26-11 12:48 pm |
 | Hum and glowing tubes! | David Gereg | 12 | 1 | 10-14-11 07:34 pm |
| Mm112/rd 65watts | Steve kennedy | 7 | 1 | 08-03-02 12:55 pm |
| Power on light on HD130 | Anonymous | 4 | 1 | 03-06-06 08:30 pm |
| Hot front end? | Michael Kaus | 1 | 1 | 08-05-02 08:08 pm |
| HD 150 Bias and tube selection question | Terry | 5 | 1 | 08-28-02 10:34 am |
| Smoking Tubes on HD 130 Reverb | Terry | 2 | 1 | 09-01-02 11:46 pm |
| Overheating | Michael Kaus | 4 | 1 | 09-06-02 06:15 am |
| Tube Question | Terry | 2 | 1 | 09-18-02 06:10 am |
| Setting bias, fairly safe? | Anonymous | 4 | 1 | 03-06-06 05:52 pm |
| Choppy Distortion when on High Gain | Lee Schinagl | 4 | 1 | 10-06-02 03:26 am |
 | RD50 Versions | Mike H | 2 | 1 | 08-15-05 11:34 am |
| Blue glow tube is bad? | Anonymous | 2 | 1 | 03-06-06 06:14 pm |
| RD100 Loud Hum / Bias Issue / Etc... | Anonymous | 2 | 1 | 03-06-06 08:47 pm |
| Poor tone control | Anonymous | 2 | 1 | 03-06-06 06:16 pm |
| Amp repairs | Mike Kaus | 11 | 1 | 07-27-10 09:53 am |
 | 112 Sixty-Five | Jay Hammond | 10 | 1 | 01-11-11 09:14 pm |
| HD130 Tremolo and Pedals and Caps | Anonymous | 3 | 1 | 03-06-06 04:01 pm |
| MM 112 RD Fifty: Hum | Anonymous | 3 | 1 | 03-06-06 08:54 pm |
| About my HD-130 head | Gio | 1 | 1 | 01-10-03 03:09 am |
 | Is bias'ing always required? | John D. | 2 | 1 | 02-02-03 08:18 am |
| Brand of speaker | Anonymous | 3 | 1 | 03-06-06 07:11 pm |
| SORRY, WRONG SECTION | Leslie Richardson | 1 | 1 | 01-21-03 01:41 am |
 | HI DAD.... | Steve Kennedy | 2 | 1 | 05-12-03 02:58 pm |
| Reissue: Transistor substitutes | Paul | 1 | 1 | 02-03-03 05:49 pm |
| Reverb on Hd130 - 210 | Mark P. | 3 | 1 | 08-25-05 11:52 pm |
| Is this bias bad? | Steve Kennedy | 2 | 1 | 04-04-03 02:57 pm |
| Music Man 112 RP-65 | John Lynch | 1 | 1 | 04-07-03 06:00 pm |
| Pot cleaner? | Anonymous | 5 | 1 | 06-18-03 08:53 am |
| Where's the bias-setting-pot? | Vito | 4 | 1 | 04-22-03 07:00 am |
| New Op-Amps for an RD50 112 | Mike H | 2 | 1 | 11-08-05 08:21 am |
| BIAS Question | Anonymous | 2 | 1 | 03-06-06 06:36 pm |
| Music man amp RD112-50 | Brad Carter | 4 | 1 | 10-10-03 01:56 pm |
| Music man 2275-130 schematics??? | Steve Kennedy | 5 | 1 | 03-26-05 07:26 pm |
| Replacement parts question | Terry | 2 | 1 | 08-12-03 11:22 pm |
| RD50 110 | Brad Carter | 3 | 1 | 10-21-03 09:13 pm |
| HD One Fifty Bias question | Terry | 2 | 1 | 10-30-03 11:35 pm |
| Hum that just started | Dave Kolars | 3 | 1 | 10-28-03 09:52 pm |
| Preamp volume | Anonymous | 2 | 1 | 03-06-06 08:42 pm |
| Preamp Feedback RD 112 50 | Steve Kennedy | 2 | 1 | 01-14-04 06:18 pm |
| Vibrato problem, please help! | Terry | 2 | 1 | 11-11-03 10:51 pm |
| 112-75 RP | Anonymous | 2 | 1 | 03-06-06 05:37 pm |
| Crackling popping in my MM HD 212 130 | Steve Kennedy | 2 | 1 | 01-14-04 06:25 pm |
| Filter choke? | Anonymous | 2 | 1 | 03-06-06 06:28 pm |
| 'whine' from 210/65 | Steve Kennedy | 3 | 1 | 01-14-04 06:55 pm |
| 112RD 50 distortion in clean channel | Chris Metcalfe | 8 | 1 | 11-04-06 05:35 am |
| 112 RP 65 repair | Anonymous | 4 | 1 | 03-06-06 07:29 pm |
| Success story for mysterious hum removal | Anonymous | 2 | 1 | 03-06-06 06:41 pm |
| 100RD head bias adjustment | sam | 1 | 1 | 01-19-04 03:22 pm |
| HD 130 410 Fuse Question. Please Help. | JaySi | 3 | 1 | 12-25-04 02:40 pm |
| 112-65 RD First Problem in 21 years | Terry | 2 | 1 | 02-11-04 01:13 am |
| Replacement OP Amps for 2275 amp | Terry | 2 | 1 | 02-09-04 11:32 pm |
| Wrong Bias in HD 210 | michael kaus | 4 | 1 | 02-19-04 07:01 am |
| Vibrato not working | michael Kaus | 2 | 1 | 02-19-04 07:03 am |
| Re: Groove Tubes 6L6 "GE" | Spot Mandoo | 7 | 1 | 11-13-09 09:52 am |
| Clipping on clean mode | Anonymous | 4 | 1 | 03-06-06 06:28 pm |
| 212HD reverb + tremolo problem | Langley | 2 | 1 | 04-05-04 10:25 am |
| Mm 130 transformer | michael kaus | 1 | 1 | 04-06-04 06:54 am |
| No volume when tone controls a 0 | John Drexler | 3 | 1 | 11-02-04 12:21 pm |
| Tube rush | adam | 6 | 1 | 04-12-04 03:33 pm |
| Why set bias so low? | James Hawkins | 2 | 1 | 12-03-13 07:03 pm |
| RD50 crossover distortion | Kenneth L Fox | 3 | 1 | 06-16-04 10:45 pm |
| Rchased a | Anonymous | 8 | 1 | 03-06-06 06:00 pm |
| 212-HD-130 Repair needed in VA | Anonymous | 5 | 1 | 03-06-06 08:29 pm |
| 115 RP reverb | Anonymous | 3 | 1 | 03-06-06 08:55 pm |
| Using a HD150 as a bass amp - what mods? | Steve Kennedy | 2 | 1 | 08-20-04 07:23 pm |
| Dead trem on HD-130. Common culprits? | Anonymous | 7 | 1 | 03-06-06 07:47 pm |
| Single tube plate glow. | Anonymous | 2 | 1 | 03-06-06 06:18 pm |
| Troubleshooting a 2275 130. | Anonymous | 2 | 1 | 03-06-06 06:33 pm |
| RD112 Fifty Reverb hiss | mark | 1 | 1 | 09-23-04 09:30 pm |
| Crackling sound on Input 2 | Anonymous | 4 | 1 | 03-06-06 06:00 pm |
| Runaway BIAS issue | pguida | 3 | 1 | 11-04-04 10:04 am |
| Music man RP100 | Anonymous | 8 | 1 | 03-06-06 08:40 pm |
| A/B box | Anonymous | 4 | 1 | 03-06-06 08:39 pm |
| Popping and Crackling noise Intermitting | Anonymous | 5 | 1 | 03-06-06 06:14 pm |
| How can I tell if Reverb is working? | Anonymous | 10 | 1 | 03-06-06 06:01 pm |
| Hi/low switch decrease power by 1/2?? | michael kaus | 2 | 1 | 12-19-04 09:21 am |
| Schematics?? | JaySi | 2 | 1 | 12-30-04 03:27 pm |
| Bias voltage for 12ax7 HD130 w/E34L? | Doug Elick | 14 | 1 | 01-01-05 01:08 pm |
| Did new E34L fail during bias? | Anonymous | 3 | 1 | 03-06-06 06:47 pm |
| Standby without speaker | Steve Kennedy | 3 | 1 | 01-15-05 11:32 pm |
| Lots of questions please help | Steve Kennedy | 6 | 1 | 01-15-05 11:36 pm |
| RD 2100 Distortion issues | Steve Kennedy | 2 | 1 | 01-30-05 08:04 pm |
| "Clipping" sound from 210 Sixty Five | michael kaus | 2 | 1 | 01-18-05 06:48 am |
| Bias setting for 210 Sixty Five ? | Steve Kennedy | 3 | 1 | 01-30-05 08:06 pm |
| Use EL-34s or 6AC7s? Does it matter? | Anonymous | 3 | 1 | 03-06-06 06:16 pm |
| 112-RP-100 Won't Power up! | Steve Kennedy | 2 | 1 | 01-30-05 08:09 pm |
| 112-sixty five power output problem | michael kaus | 8 | 1 | 02-19-05 04:27 pm |
 | Just got Musicman 4x10 HD "Sixty-Five" | cerebralsugar | 25 | 1 | 02-25-05 08:42 am |
| LM307 replacement/troubleshooting my pre | michaelkaus | 3 | 1 | 02-05-05 04:36 pm |
| Tremolo on high but not low power | Steve Kennedy | 3 | 1 | 02-10-05 10:44 pm |
| 65 Reverb Biasing | michael kaus | 2 | 1 | 02-13-05 05:08 pm |
| HD130 biasing question | Anonymous | 2 | 1 | 03-06-06 06:50 pm |
| Replacing jbl E120-B 12" speaker | Tom C | 3 | 1 | 02-22-05 03:36 pm |
| Oregon: Shop for Overhaul? | Anonymous | 2 | 1 | 03-06-06 06:13 pm |
| Low power setting? ...210-65 | michael kaus | 3 | 1 | 03-01-05 06:42 am |
| Power Transformer for HD-212 | Steve Kennedy | 3 | 1 | 03-26-05 07:27 pm |
| Sudden volume change on HD130 | michael kaus | 6 | 1 | 03-27-05 05:56 pm |
| My 212 sixty five and HD150 head | Jay Hammond | 5 | 1 | 01-11-11 09:52 pm |
| Need Help With 112RP-65 | Carl Montney | 10 | 1 | 04-15-05 07:07 pm |
| 210 hd 130 help needed | michael kaus | 2 | 1 | 04-12-05 06:36 am |
| Active electronics -Bias | david wolf | 4 | 1 | 05-06-05 04:37 am |
| Rd112 100 info? | Steve Kennedy | 2 | 1 | 05-05-05 04:58 pm |
| 112-65 RP | Steve Kennedy | 2 | 1 | 05-06-05 05:53 pm |
| 410HD130 Tube Replacement and biasing | michael kaus | 4 | 1 | 05-12-05 04:53 pm |
| Biasing capacitors | aryl | 13 | 1 | 06-08-05 04:19 am |
| A little MM voodoo ?!? | Le Basseur | 4 | 1 | 06-07-05 10:27 am |
| 112 RD-6L6 or 6CA7? | Tom C | 3 | 1 | 06-25-05 10:54 am |
| Troubleshoot Slight Distortion 112RP65 | Mike H. | 4 | 1 | 07-28-05 01:05 am |
| Seemly Low Volume HD-130 | mike kaus | 6 | 1 | 12-29-05 05:54 pm |
| Unpleasant distortion, low volume... | michael kaus | 11 | 1 | 08-10-05 06:39 am |
| Power Light | Terry Loose | 9 | 1 | 01-31-11 09:24 am |
| Undertone | Steve Kennedy | 4 | 1 | 08-12-05 06:55 pm |
| Yet another bias Q: HD-130 (SS preamp) | Mike | 3 | 1 | 05-16-07 09:00 pm |
 | RED PLATE GLOW | michael kaus | 2 | 1 | 10-13-05 06:43 am |
| Where' da MM T-shirts that were on Ebay | eric_ellman | 4 | 1 | 11-29-05 02:35 pm |
| Can Rev and Trem be added to Channel 1? | The Problem Solver | 8 | 1 | 11-07-05 08:18 am |
| RD50 Revisions | Mike H. | 3 | 1 | 11-14-05 09:20 pm |
| Clipping and treble loss | mike kaus | 4 | 1 | 12-01-05 06:42 am |
| Electrolytics | mike kaus | 2 | 1 | 11-29-05 05:44 pm |
 | HD130 rectifier board arcing | mike kaus | 2 | 1 | 12-03-05 10:23 am |
| Merry Christmas | Steve Kennedy | 2 | 1 | 12-30-05 07:37 pm |
| 210-130 HD low vol, hot tubes | Problem Solver | 32 | 1 | 01-28-06 03:29 pm |
| Procedure for biasing HD212-130 | bluepill | 3 | 1 | 02-21-06 04:39 pm |
| Good music man amp tech in NYC? | Phil G | 2 | 1 | 03-10-06 12:09 pm |
| Zioxqw | zioxqw | 1 | 1 | 03-11-06 07:08 pm |
| MM 412 GS Speaker Grill Removal | carl from aus | 6 | 1 | 03-22-06 12:28 am |
| Tremolo has no volume | mike kaus | 6 | 1 | 04-12-06 06:17 am |
| Difference between 210-65 and 212-65 | carl. | 5 | 1 | 04-10-06 05:25 am |
| Voltage values tremolo circuit in HD130? | Scott Cannon | 3 | 1 | 04-11-06 09:19 pm |
| GT bias tool | Clayton Choate | 8 | 1 | 04-25-06 12:11 pm |
| Repair / Maintenance questions | Warren Peace | 2 | 1 | 04-26-06 01:00 pm |
| 2x12 Sixty Five Bias/Tube Question | bradleyny | 4 | 1 | 05-05-06 08:12 am |
| Problems with biasing my HD130 | dennis v | 3 | 1 | 05-10-06 06:21 am |
| Reverb gone on the HD130 Head...off EBay | Brian M. Watson | 3 | 1 | 09-16-10 10:09 am |
| Another Endorsement for Terry Loose | Mark Lewis | 3 | 1 | 02-05-08 09:40 am |
| Help! My 112 Sixty-Five sounds bad | Brian Beebe | 6 | 1 | 05-29-06 10:24 pm |
| Ideas on making an RD50 less trebley? | Chris Metcalfe | 3 | 1 | 10-26-06 12:40 pm |
| 212 HD130 sounding too compressed. | Steve Kennedy | 4 | 1 | 06-25-06 01:31 am |
| When do you get preamp distortion ?? | Andrew Wilson | 5 | 1 | 11-12-06 01:23 pm |
| Testing for Microphonic Tubes | Edward Solberg | 2 | 1 | 07-02-06 10:16 am |
| It's broke--RD112-100 | William Nexson | 4 | 1 | 08-13-06 10:41 am |
 | Best sounding MusicMan amps? | Mike Kaus | 2 | 1 | 08-16-06 05:42 am |
| Problems with biasing my MM hd130 | Mike Kaus | 2 | 1 | 09-14-06 06:25 am |
| RD50 intermittent fault/ recapping | Mike Kaus | 4 | 1 | 10-16-06 12:37 pm |
| MM design objectives - idle bias levels | Chris Metcalfe | 1 | 1 | 10-20-06 06:48 am |
| Preamp distortion...Help... | Andrew Wilson | 10 | 1 | 11-21-06 02:22 pm |
| MM HD 210 One Thirty | Mike Kaus | 7 | 1 | 11-16-06 06:26 am |
| Weird hum 410-65 | Walter Jowers | 6 | 1 | 12-18-06 07:08 pm |
| Distortion Issue solved... I hope | Jeremy Shaw | 3 | 1 | 11-23-06 05:51 pm |
| Signal clipping at the PI tube ? | Andrew Wilson | 11 | 1 | 11-30-06 08:39 pm |
| Voltage info needed | Andrew Wilson | 1 | 1 | 11-28-06 11:55 am |
| Need a power switch for 130 head | Mike Kaus | 7 | 1 | 12-25-06 03:24 pm |
| Faulty Speaker Plug | Peter Maziar | 1 | 1 | 12-20-06 09:19 am |
| General overhauling a 112RD50 | Dirk Wacker | 1 | 1 | 02-13-07 03:52 am |
| Any service bulletins for 112RD50 ? | Dirk Wacker | 1 | 1 | 02-13-07 04:04 am |
| 210-65 was buzzing B-adly | Edward Solberg | 3 | 1 | 02-24-07 08:44 am |
| Reverb question | Mike Kaus | 2 | 1 | 04-04-07 06:09 pm |
| Trying to clean up my clean tone | Mike | 8 | 1 | 05-30-07 10:13 pm |
| MUSIC MAN HD150 Power Transformer | gsonique | 4 | 1 | 05-17-07 09:07 pm |
| Pulling 2 Tubes on a 210 HD 130 | Ingo Raven | 4 | 1 | 07-24-07 03:57 am |
| MM HD 210-130 distortion tone problem??? | Andrew Wilson | 2 | 1 | 07-18-07 08:38 pm |
| HD130 acting up again, any thoughts ??? | Edward Solberg | 5 | 1 | 07-20-07 08:34 pm |
| Amp tech in the UK who knows these amps? | Mike | 3 | 1 | 06-27-07 10:44 am |
| Little Volume Control | Todd Gunby | 4 | 1 | 01-15-08 11:51 am |
| What is wrong with my HD-130 head | Steve Tarabokia | 4 | 1 | 09-10-07 10:27 am |
| Amp from 1975. Does it need new caps? | Giorgio | 5 | 1 | 09-14-07 07:15 pm |
| Help ! Buzzing on RD112 100W combo | Jim Gaudoin | 1 | 1 | 09-13-07 07:50 am |
| Awesome | Kevin Kelley | 1 | 1 | 09-16-07 07:38 pm |
| Most Helpfull Forum - Thanks | Jim Wainwright | 1 | 1 | 10-22-07 06:52 am |
| Intermittent tone drop | Mike Kaus | 2 | 1 | 10-24-07 06:26 am |
| Deep Switch Won't Work | Jeremy Mock | 3 | 1 | 10-26-07 05:05 pm |
| Best Overdrive pedal for 210-65 | T.E. Price | 11 | 1 | 10-13-10 10:38 pm |
| No sound with 210HD/130-12AX7 | Josue Roberto Lopez | 16 | 1 | 04-17-08 11:34 am |
| Bias Settings for RD112 One Hundred | Bill Traylor | 2 | 1 | 02-26-08 02:59 am |
| Tech Advice: 1980-2008 MODS? | Marc Mulay | 1 | 1 | 02-27-08 07:06 am |
| Carbon Resistors in you Music Man | Peter Maziar | 3 | 1 | 04-07-08 05:09 pm |
| Why is my hd130 farting at me? | Mike Kaus | 2 | 1 | 04-17-08 06:12 am |
| HD1390210 picks up radio stations | Matthew Lehr | 6 | 1 | 05-03-08 07:51 am |
| Volume Question | Bill Traylor | 4 | 1 | 06-28-08 11:11 pm |
| . RD 112 50 - The resistor eater | Tom Siegel | 10 | 1 | 01-23-09 04:10 pm |
| Set the bias - replacing like tubes? | Ben Moore | 6 | 1 | 07-30-08 08:00 am |
| Stuck tremelo on 210HD-130 | Bill Traylor | 5 | 1 | 09-20-08 02:45 am |
| Need help fixing my MM Sixty Five | Mike Kaus | 6 | 1 | 10-08-08 06:10 am |
| Happy Holidays | Tom Siegel | 6 | 1 | 01-24-09 02:59 pm |
| Bias creep on a RD65-112 | Mike Kaus | 4 | 1 | 01-07-09 06:12 am |
 | Help with some info | Sean Flannery | 10 | 1 | 05-20-10 02:40 pm |
| Blown Tube (?) On 112-65 | Mike Kaus | 2 | 1 | 02-20-09 06:21 am |
| Problems with blown valve and fuses | Mike Kaus | 2 | 1 | 02-22-09 08:42 am |
| RD100 115 reverb problem | John Paonessa | 3 | 1 | 03-09-09 07:59 am |
| Potentiometer for MM | Thomas Leong | 17 | 1 | 04-06-09 05:39 am |
| Heavy Distortion on 2275-65 | Mael Bellec | 9 | 1 | 04-03-09 08:12 am |
| HD130 Settings | Dave Gossett | 4 | 1 | 06-25-09 09:46 pm |
| Sixty-five Reverb-less | Daniel Hall | 1 | 1 | 07-13-09 01:21 pm |
| 1976 112 Sixty-five bias question | Giordano da Silva | 3 | 1 | 07-22-09 04:32 pm |
| 410 130 goes "bassy" after warming up | Mike Kaus | 2 | 1 | 11-13-09 07:17 pm |
| HD 212 130 ,12ax7 . Bias findings. | Graeme Wilton | 5 | 1 | 11-29-09 04:00 pm |
| Noisy HD212 | Ed Goforth | 6 | 1 | 12-12-09 06:18 pm |
| Amp repair success story (MM HD-130) | Mike Kaus | 2 | 1 | 12-08-09 09:20 am |
| Footswitch or Phasor Repair for 112 RP65 | Cliff Goodwin | 1 | 1 | 12-15-09 11:32 am |
| Footswitch or Phasor Repair for 112 RP65 | Mike Kaus | 2 | 1 | 12-17-09 03:38 pm |
| Hd 150 volume loss is confusing me | Lars Verholt | 6 | 1 | 02-17-10 07:48 pm |
| HD One-Fifty Head Tone Control latency | Bill Traylor | 4 | 1 | 09-03-10 03:48 am |
| HD150 Pots dual? OP amps??? (with pics) | Lars Verholt | 5 | 1 | 09-30-10 10:43 pm |
| Perhaps I should give up...bias story. | Brian M. Watson | 7 | 1 | 10-05-10 11:23 am |
| HD130 Reverb (Reverb button not working) | Adam | 3 | 1 | 10-15-10 11:48 pm |
| RD combo cab rear panel orientation | David Pokotylo | 1 | 1 | 11-15-10 01:02 am |
| HD130 Channel Jumping | Adam | 3 | 1 | 11-23-10 03:58 am |
| HD130 - EL34 Tube Recommendation | Mike Kaus | 7 | 1 | 11-09-11 04:17 pm |
| Schematic for 210RP One Hundred | Andy Simons | 3 | 1 | 01-02-11 04:55 am |
| 210-65 chassis number 2275-65 EX | Christophe Servais | 11 | 1 | 02-20-11 09:46 am |
| Coping with bias creep... | Mike Griffin | 5 | 1 | 02-28-14 12:46 pm |
| HD130 Chassis - Loose Screws | Mike Kaus | 14 | 1 | 01-24-11 11:20 am |
| 210RP One Hundred | Lars Verholt | 4 | 1 | 03-08-11 07:30 am |
| MusicMan RD50-112 Question | Paul Johnson | 19 | 1 | 04-03-13 06:06 pm |
| 2475-130: Low volume + general upkeep | Mike Kaus | 8 | 1 | 05-21-11 04:17 pm |
| MM 115-65 distorted tone--HELP! | Keith Wilkes | 8 | 1 | 07-29-11 09:16 am |
| Musicman 410-75 amp question.... | David Goldberg | 3 | 1 | 08-05-11 05:25 pm |
| Overdriving/ distortion | Christophe | 5 | 1 | 09-15-11 09:25 am |
| Tone difference:tube/SS phase splitter? | Daniel Westrick | 3 | 1 | 10-31-11 07:58 pm |
| Headroom: 65 vs 100 vs 130/150 | Bill Traylor | 2 | 1 | 11-03-11 06:52 pm |
| MM 75 Reverb? | Mike Kaus | 4 | 1 | 01-09-12 03:27 pm |
| No bias current on 210-65???? | Steve Daugherty | 10 | 1 | 01-26-12 11:22 am |
| LM307H in front of 12ax7 | Mike Kaus | 2 | 1 | 02-15-12 04:44 pm |
| My new(old) MM 210 65 and ?? | Mike Kaus | 6 | 1 | 02-27-12 08:11 am |
| Almost there but need help! 210-65 | Mike Kaus | 2 | 1 | 02-29-12 10:39 am |
| 115RP is dying ? | Philippe Backès | 3 | 1 | 05-13-12 09:44 am |
| Played with the Bias, broke my 212 HD | Eddie Morin | 7 | 1 | 07-01-12 10:57 pm |
| Replacing Driver Transistors (Help) | Mike Kaus | 7 | 1 | 10-25-12 06:30 pm |
| Totally Baffled now 2475-75 | spudmurphy | 36 | 1 | 02-26-13 07:30 am |
| Re-Tubing and Biasing a HD130 head? | jnewmark | 2 | 1 | 12-07-12 07:20 am |
| Bias And Heat In HD130? | Mike Kaus | 5 | 1 | 12-15-12 04:09 pm |
| 112RD 100 Reverb Hiss | Rob Flindall | 10 | 1 | 01-08-13 06:34 pm |
| Very Noisy HD210-130 I just acquired | Peter Harvey | 13 | 1 | 01-22-13 04:17 pm |
| RD-50 service & refurb - Where to start? | Mike Kaus | 4 | 1 | 02-20-13 05:13 pm |
| HD130 popping sounds | Tim Guiher | 3 | 1 | 01-26-13 04:41 pm |
| Hiss in HD130 410 | Mike Kaus | 8 | 1 | 02-13-13 02:29 pm |
| RD 2100 no bias | Mike Kaus | 14 | 1 | 03-21-13 06:05 pm |
| New Tubes for HD150 | Stephen Phillipis | 5 | 1 | 03-27-13 06:31 pm |
| 212-65 power switch wiring | Mike Kaus | 5 | 1 | 04-01-13 08:25 pm |
| Unstable 2100-65 | pspring | 4 | 1 | 04-14-13 09:22 pm |
| 112RD Volume loss | Niall Madden | 8 | 1 | 05-22-13 05:49 am |
| Bleeding Caps / servicing reminder. | Rory Coupland | 15 | 1 | 07-06-13 06:48 pm |
| Schematic help. | Christophe | 7 | 1 | 07-16-13 07:46 am |
| MM HD130 2100-130 Questions | Brian Vargas | 3 | 1 | 07-11-13 02:43 pm |
| Deep/Normal switch- how config'd? | Rory Coupland | 1 | 1 | 07-17-13 02:43 am |
| Schematic: wrong!? | Rory Coupland | 10 | 1 | 07-24-13 02:50 am |
| Speaker killing amp | Lennart Hedlund | 14 | 1 | 08-12-13 04:47 pm |
| Verb help please | Gus Castellucci | 9 | 1 | 08-17-13 03:23 pm |
| New tube bias problem in a 210-65 | Mike Kaus | 3 | 1 | 08-17-13 06:06 am |
| Bias frustration on 210-65!!! | Steve Kennedy | 31 | 1 | 09-01-13 07:52 pm |
| RD-50 Layout | Mike Kaus | 2 | 1 | 08-26-13 07:56 am |
| Power tube flash | Mike Kaus | 6 | 1 | 09-11-13 12:16 pm |
| Power wave when switching on MM hd130 | Mike Kaus | 2 | 1 | 02-23-14 05:18 pm |
| Hi/Standby/Lo Switch Pop | Mike Griffin | 3 | 1 | 02-28-14 12:10 pm |
| Reverse Audio Taper Gain Pots | Mike Griffin | 3 | 1 | 02-28-14 05:01 pm |
| Swapping IC's on a SS 212 Sixty-Five | Mike Kaus | 4 | 1 | 03-19-14 09:17 am |
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