Technical Reference

Forum

Topics

Posts

Last post

45/100 Build Journal
Detailed assembly steps separated into threads.
Moderator: VelvetGeorge
Topics: 121

121 Topics

1763 Posts

Last post Re: Manual for 45/100 build..…
by m.alexander View the latest post
Sat Sep 25, 2021 3:44 pm
Marshall Schematics
Moderator: VelvetGeorge
Topics: 18

18 Topics

29 Posts

Last post Marshall Haze 40 schematic
by Flames1950 View the latest post
Sun Nov 14, 2010 9:57 am
Circuit Board layouts
Moderator: VelvetGeorge
Topics: 13

13 Topics

220 Posts

Last post by VelvetGeorge View the latest post
Tue Feb 05, 2008 1:53 pm
Transformer Wiring Diagrams
Moderator: VelvetGeorge
Topics: 13

13 Topics

18 Posts

Last post Re: Mercury Magnetics P4550JT…
by VelvetGeorge View the latest post
Mon Sep 22, 2008 12:58 pm
Amp and Kit Info
Moderator: VelvetGeorge
Topics: 14

14 Topics

46 Posts

Last post Re: 100 watt plexi kit instru…
by VelvetGeorge View the latest post
Mon Sep 22, 2008 6:41 pm
12-Series Build Journal
Moderator: VelvetGeorge
Topics: 96

96 Topics

3162 Posts

Last post 12xxx Series build vs 1969 10…
by Robocop101985 View the latest post
Sun Jan 15, 2023 2:22 am

Active topics

Replies

Views

Last post

Blog style journal of 45/100 build steps

Last post by AJW « Fri Aug 31, 2018 1:53 pm
Replies: 14
by VelvetGeorge » Fri Apr 25, 2008 11:09 am

14 Replies

17249 Views

Last post by AJW
Fri Aug 31, 2018 1:53 pm
45/100 bill of materials

Last post by Roe « Mon Apr 27, 2009 3:29 am
Replies: 17
by VelvetGeorge » Mon Apr 28, 2008 5:02 pm
1

2
17 Replies

20855 Views

Last post by Roe
Mon Apr 27, 2009 3:29 am
12000 pictures from start to finish

Last post by leleduke « Thu Apr 17, 2008 8:57 pm
Replies: 16
by leleduke » Sun Dec 31, 2006 11:16 am
1

2
16 Replies

17220 Views

Last post by leleduke
Thu Apr 17, 2008 8:57 pm
100 Watt Kit Boards Lead and Bass

Last post by VelvetGeorge « Mon Dec 17, 2007 8:06 pm

by VelvetGeorge » Mon Dec 17, 2007 8:06 pm

0 Replies

11209 Views

Last post by VelvetGeorge
Mon Dec 17, 2007 8:06 pm
'67 100 watt board layout

Last post by Billy Batz « Sun Jan 07, 2007 3:21 pm
Replies: 22
by VelvetGeorge » Thu Aug 11, 2005 4:53 pm
1

2
22 Replies

29090 Views

Last post by Billy Batz
Sun Jan 07, 2007 3:21 pm
67 100 watt cap board layout

Last post by rockstah « Tue Dec 26, 2006 1:17 am
Replies: 14
by VelvetGeorge » Fri Aug 19, 2005 12:39 am

14 Replies

21151 Views

Last post by rockstah
Tue Dec 26, 2006 1:17 am
Amp layouts, courtesy of BillyBatz

Last post by RedHouse « Sun Nov 19, 2006 9:51 pm
Replies: 146
by VelvetGeorge » Mon Dec 12, 2005 4:49 pm
1

…

6

7

8

9

10
146 Replies

104342 Views

Last post by RedHouse
Sun Nov 19, 2006 9:51 pm
67 and '68 era 100 watt parts list

Last post by Flames1950 « Tue Oct 17, 2006 4:21 pm
Replies: 16
by VelvetGeorge » Tue Aug 23, 2005 10:01 pm
1

2
16 Replies

22653 Views

Last post by Flames1950
Tue Oct 17, 2006 4:21 pm
JTM45/100 capacitor board layout

Last post by pongo316 « Thu Jun 08, 2006 9:58 am
Replies: 7
by VelvetGeorge » Fri Aug 19, 2005 12:07 am

7 Replies

17126 Views

Last post by pongo316
Thu Jun 08, 2006 9:58 am
'68 100 watt board layout

Last post by rockstah « Mon Oct 31, 2005 9:20 am
Replies: 14
by VelvetGeorge » Fri Aug 12, 2005 3:29 pm

14 Replies

24211 Views

Last post by rockstah
Mon Oct 31, 2005 9:20 am
12xxx Series build vs 1969 100w build

Last post by Robocop101985 « Sun Jan 15, 2023 2:22 am

by Robocop101985 » Sun Jan 15, 2023 2:22 am

0 Replies

66 Views

Last post by Robocop101985
Sun Jan 15, 2023 2:22 am
12000 is cursed

Last post by Did J « Fri Dec 31, 2021 8:01 am
Replies: 11
by Probably Loud » Fri Jul 24, 2020 10:04 pm

11 Replies

8331 Views

Last post by Did J
Fri Dec 31, 2021 8:01 am
Manual for 45/100 build....

Last post by m.alexander « Sat Sep 25, 2021 3:44 pm
Replies: 8
by clusterstudios » Tue Feb 24, 2009 12:12 pm

8 Replies

10555 Views

Last post by m.alexander
Sat Sep 25, 2021 3:44 pm
12,000 build instructions

Last post by Fanman « Wed Feb 24, 2021 8:42 pm

by Fanman » Wed Feb 24, 2021 8:42 pm

0 Replies

2597 Views

Last post by Fanman
Wed Feb 24, 2021 8:42 pm
Build journal docs

Last post by Fanman « Wed Feb 24, 2021 8:36 pm
Replies: 7
by tWreCK » Thu Feb 02, 2017 10:00 am

7 Replies

7096 Views

Last post by Fanman
Wed Feb 24, 2021 8:36 pm
Anyone have a build Journal with pics? (Night Owl's)

Last post by mtross « Wed May 06, 2020 10:31 pm

by mtross » Wed May 06, 2020 10:31 pm

0 Replies

1836 Views

Last post by mtross
Wed May 06, 2020 10:31 pm
Night Owl's build journal.

Last post by mtross « Mon Apr 27, 2020 10:15 pm

by mtross » Mon Apr 27, 2020 10:15 pm

0 Replies

1745 Views

Last post by mtross
Mon Apr 27, 2020 10:15 pm
JTM 45/100 Proper grounding?

Last post by Twistingcrow « Sat Feb 15, 2020 2:03 pm
Replies: 9
by rjsamplification » Tue Jun 06, 2017 1:47 pm

9 Replies

8294 Views

Last post by Twistingcrow
Sat Feb 15, 2020 2:03 pm
The stock '68 12xxx layout

Last post by johnnyquest « Mon Nov 11, 2019 9:21 pm
Replies: 14
by tWreCK » Sun Feb 05, 2017 7:53 pm

14 Replies

10776 Views

Last post by johnnyquest
Mon Nov 11, 2019 9:21 pm
Wiring routing and Lead dress

Last post by rip « Wed Oct 09, 2019 10:10 am

by rip » Wed Oct 09, 2019 10:10 am

0 Replies

2849 Views

Last post by rip
Wed Oct 09, 2019 10:10 am
Unused transformer leads

Last post by rip « Tue Jun 25, 2019 9:12 am

by rip » Tue Jun 25, 2019 9:12 am

0 Replies

2607 Views

Last post by rip
Tue Jun 25, 2019 9:12 am
JTM45/100 Aluminum Chassis Gauge

Last post by VelvetGeorge « Thu Jun 22, 2017 4:16 pm
Replies: 2
by rip » Tue Jun 20, 2017 8:30 am

2 Replies

3432 Views

Last post by VelvetGeorge
Thu Jun 22, 2017 4:16 pm
standby switch wiring 45/100

Last post by rjsamplification « Wed Jun 21, 2017 5:22 pm
Replies: 4
by dan_tramble » Wed Mar 15, 2017 3:34 pm

4 Replies

3947 Views

Last post by rjsamplification
Wed Jun 21, 2017 5:22 pm
1202-84 with EL34s

Last post by rip « Thu Jun 08, 2017 2:18 pm
Replies: 2
by rip » Mon May 22, 2017 4:02 pm

2 Replies

3286 Views

Last post by rip
Thu Jun 08, 2017 2:18 pm
Forming Filter Caps in a JTM 45/100

Last post by Roe « Sat May 06, 2017 9:27 am
Replies: 21
by rip » Sat Apr 17, 2010 4:17 pm
1

2
21 Replies

14860 Views

Last post by Roe
Sat May 06, 2017 9:27 am
Bias Circuit

Last post by rip « Wed May 03, 2017 1:34 pm
Replies: 2
by rip » Sat Apr 22, 2017 12:54 pm

2 Replies

3224 Views

Last post by rip
Wed May 03, 2017 1:34 pm
Fuseholder Board

Last post by rip « Sat Apr 22, 2017 12:42 pm
Replies: 2
by rip » Sat Mar 25, 2017 8:36 am

2 Replies

3142 Views

Last post by rip
Sat Apr 22, 2017 12:42 pm
45/100 inspired build

Last post by ol foot « Sun Mar 19, 2017 7:21 am
Replies: 5
by fusionbear » Sat Mar 18, 2017 1:19 pm

5 Replies

4009 Views

Last post by ol foot
Sun Mar 19, 2017 7:21 am
Early MetroAmp 1204-43 Voltages

Last post by VelvetGeorge « Sat Mar 18, 2017 4:45 pm
Replies: 3
by rip » Fri Mar 17, 2017 3:48 pm

3 Replies

2807 Views

Last post by VelvetGeorge
Sat Mar 18, 2017 4:45 pm
Hi

Last post by NY Chief « Thu Feb 02, 2017 3:58 pm
Replies: 2
by JimiJames » Sat Jan 28, 2017 7:13 pm

2 Replies

3124 Views

Last post by NY Chief
Thu Feb 02, 2017 3:58 pm
new 2203 build completed

Last post by neikeel « Wed Jan 18, 2017 9:42 am
Replies: 1
by neikeel » Wed Jan 18, 2017 9:32 am

1 Replies

2733 Views

Last post by neikeel
Wed Jan 18, 2017 9:42 am
Question about pre-amp cap wiring and cap board caps.

Last post by neikeel « Sat Jan 07, 2017 2:56 pm
Replies: 3
by JimiJames » Thu Jan 05, 2017 6:50 am

3 Replies

3441 Views

Last post by neikeel
Sat Jan 07, 2017 2:56 pm
new 45/100 build

Last post by dan_tramble « Sun Oct 23, 2016 7:52 am
Replies: 2
by dan_tramble » Fri Oct 21, 2016 3:48 pm

2 Replies

2918 Views

Last post by dan_tramble
Sun Oct 23, 2016 7:52 am
12006 Build

Last post by axeman « Sat Aug 20, 2016 2:04 am
Replies: 1
by YMI5150? » Thu Aug 18, 2016 4:38 pm

1 Replies

3261 Views

Last post by axeman
Sat Aug 20, 2016 2:04 am
First 12 series build

Last post by axeman « Fri Apr 29, 2016 12:34 pm
Replies: 78
by Lbrown3743 » Sun Dec 21, 2014 4:54 am
1

2

3

4

5

6
78 Replies

33499 Views

Last post by axeman
Fri Apr 29, 2016 12:34 pm
12003

Last post by vanhalen5150 « Fri Mar 18, 2016 6:04 am
Replies: 86
by vanhalen5150 » Wed Jun 13, 2012 3:41 pm
1

2

3

4

5

6
86 Replies

38978 Views

Last post by vanhalen5150
Fri Mar 18, 2016 6:04 am
Voltage switch

Last post by neikeel « Sun Feb 21, 2016 8:38 am
Replies: 1
by thompsoninst » Sat Feb 13, 2016 4:49 pm

1 Replies

2697 Views

Last post by neikeel
Sun Feb 21, 2016 8:38 am
Help on Night Owl's Step 10 instructions

Last post by dante « Mon Dec 07, 2015 9:19 am
Replies: 19
by dante » Sat Aug 22, 2015 11:44 am
1

2
19 Replies

7453 Views

Last post by dante
Mon Dec 07, 2015 9:19 am
10,000 Series NOS Build

Last post by Probably Loud « Sun Nov 22, 2015 11:48 am
Replies: 10
by Probably Loud » Fri Oct 09, 2015 4:56 pm

10 Replies

4325 Views

Last post by Probably Loud
Sun Nov 22, 2015 11:48 am
A new 12 000 - still working - update

Last post by Carbia « Thu Oct 15, 2015 8:13 am
Replies: 45
by ReidarNikolai » Sun Mar 16, 2014 11:52 pm
1

2

3

4
45 Replies

17548 Views

Last post by Carbia
Thu Oct 15, 2015 8:13 am
Cap Forming Procedure for 12xxx Build

Last post by jnew « Tue Sep 15, 2015 9:02 am
Replies: 13
by YMI5150? » Tue Feb 21, 2012 11:54 am

13 Replies

6825 Views

Last post by jnew
Tue Sep 15, 2015 9:02 am
12XXX Build 05/2010

Last post by edisoncarter « Sun Aug 16, 2015 6:07 am
Replies: 277
by vanhalen5150 » Mon Apr 19, 2010 8:05 am
1

…

15

16

17

18

19
277 Replies

57574 Views

Last post by edisoncarter
Sun Aug 16, 2015 6:07 am
12000 amp build in the UK!

Last post by rgorke « Wed Jul 15, 2015 10:00 am
Replies: 7
by shackman » Sun May 17, 2015 8:48 am

7 Replies

4011 Views

Last post by rgorke
Wed Jul 15, 2015 10:00 am
Channel Problem with JTM 45/100 Build

Last post by neikeel « Thu May 28, 2015 4:30 pm
Replies: 2
by jckid649 » Thu May 28, 2015 12:22 am

2 Replies

3334 Views

Last post by neikeel
Thu May 28, 2015 4:30 pm
12 series build troubleshooting

Last post by rgorke « Thu Apr 30, 2015 3:12 pm
Replies: 1
by nperros » Sat Apr 18, 2015 1:46 pm

1 Replies

2214 Views

Last post by rgorke
Thu Apr 30, 2015 3:12 pm
12-Series Build goonies

Last post by rgorke « Thu Apr 30, 2015 3:07 pm
Replies: 24
by Goonies » Wed Mar 04, 2015 6:54 pm
1

2
24 Replies

9182 Views

Last post by rgorke
Thu Apr 30, 2015 3:07 pm
NOS-style JTM 45/100 on Metro chassis

Last post by emmjaydubya « Tue Feb 17, 2015 10:58 pm
Replies: 54
by emmjaydubya » Sat May 17, 2014 6:54 pm
1

2

3

4
54 Replies

30488 Views

Last post by emmjaydubya
Tue Feb 17, 2015 10:58 pm
EL34 JTM45/100 Fuses.

Last post by Homebelly « Tue Jan 27, 2015 11:48 am
Replies: 2
by Homebelly » Mon Jan 26, 2015 4:22 pm

2 Replies

3079 Views

Last post by Homebelly
Tue Jan 27, 2015 11:48 am
HolbrookTone 12005 Build Thread

Last post by JiMB « Sat Dec 20, 2014 8:41 pm
Replies: 22
by YMI5150? » Thu Oct 16, 2014 1:11 pm
1

2
22 Replies

7415 Views

Last post by JiMB
Sat Dec 20, 2014 8:41 pm
12xxx build with a couple of pics

Last post by EJSLPlexi « Wed Dec 17, 2014 12:05 pm
Replies: 19
by BrownSound1 » Mon Jan 28, 2013 10:48 pm
1

2
19 Replies

9182 Views

Last post by EJSLPlexi
Wed Dec 17, 2014 12:05 pm

Return to Board Index