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18Watt Technical Discussion

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Last post by Graydon « Tue 07/23/24 5:50 pm
Posted in By the Bench

by Graydon » Tue 07/23/24 5:50 pm » in By the Bench

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Last post by Graydon
Tue 07/23/24 5:50 pm
Voltage Dropping Zener Diodes

Last post by JMPGuitars « Tue 10/06/20 8:16 am

by JMPGuitars » Tue 10/06/20 8:16 am

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19699 Views

Last post by JMPGuitars
Tue 10/06/20 8:16 am
Soldering Technique

Last post by JMPGuitars « Fri 07/26/19 9:03 am
Replies: 2
by JMPGuitars » Sun 06/09/19 7:29 am

2 Replies

21157 Views

Last post by JMPGuitars
Fri 07/26/19 9:03 am
Modern Ground Schemes

Last post by JMPGuitars « Fri 04/10/20 6:20 pm
Replies: 4
by JMPGuitars » Tue 05/07/19 7:48 pm

4 Replies

24699 Views

Last post by JMPGuitars
Fri 04/10/20 6:20 pm
This room is for 18W-related posts only!

Last post by Graydon « Fri 04/14/06 10:09 am

by Graydon » Fri 04/14/06 10:09 am

0 Replies

20947 Views

Last post by Graydon
Fri 04/14/06 10:09 am
What Every Newcomer Should Know...

Last post by dustin_writes « Wed 08/23/06 1:42 pm
Replies: 54
by Gabi » Fri 11/18/05 12:10 pm
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92630 Views

Last post by dustin_writes
Wed 08/23/06 1:42 pm

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Tremolo TMB Questions

Last post by TriodeLuvr « Thu 11/21/24 6:53 am
Replies: 103
by JMPGuitars » Wed 05/05/21 6:24 pm
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103 Replies

32165 Views

Last post by TriodeLuvr
Thu 11/21/24 6:53 am
Pentode (EF86) pre-amps and combo's?

Last post by JMPGuitars « Sat 05/11/24 9:31 am
Replies: 74
by mark0614 » Fri 11/02/07 9:18 pm
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54064 Views

Last post by JMPGuitars
Sat 05/11/24 9:31 am
18 watt fizz: please help me diagnose this?

Last post by HarryPotter69 « Sun 02/25/24 11:54 am
Replies: 171
by TomOlsen1 » Thu 01/14/10 4:09 am
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193811 Views

Last post by HarryPotter69
Sun 02/25/24 11:54 am
Help improve pp-18 tone

Last post by Isaac Stuckey « Sun 01/19/14 11:32 pm
Replies: 110
by asd » Mon 08/22/11 9:53 pm
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78074 Views

Last post by Isaac Stuckey
Sun 01/19/14 11:32 pm
2-Channel WEMarshall 18w

Last post by Bob88 « Thu 02/13/25 2:24 pm
Replies: 2
by Bob88 » Sat 12/28/24 6:31 am

2 Replies

326 Views

Last post by Bob88
Thu 02/13/25 2:24 pm
18w Marshall Lite

Last post by JMPGuitars « Thu 02/06/25 1:57 pm
Replies: 9
by scstill » Sun 02/02/25 10:34 am

9 Replies

926 Views

Last post by JMPGuitars
Thu 02/06/25 1:57 pm
Can anyone ID this circuit?

Last post by JMPGuitars « Thu 01/30/25 12:15 pm
Replies: 1
by Phrak9 » Thu 01/30/25 11:06 am

1 Replies

113 Views

Last post by JMPGuitars
Thu 01/30/25 12:15 pm
Looking for DIY chassis for builds.

Last post by JMPGuitars « Wed 01/29/25 10:06 pm
Replies: 7
by Dragonfly18 » Sun 01/26/25 1:02 pm

7 Replies

211 Views

Last post by JMPGuitars
Wed 01/29/25 10:06 pm
characteristics PT

Last post by Juanjo42 « Wed 01/29/25 4:17 pm
Replies: 4
by Juanjo42 » Mon 01/20/25 6:21 pm

4 Replies

177 Views

Last post by Juanjo42
Wed 01/29/25 4:17 pm
I'm losing my mind

Last post by Daviedawg « Sun 01/19/25 4:02 am
Replies: 6
by kerchakone » Thu 11/21/24 11:18 am

6 Replies

550 Views

Last post by Daviedawg
Sun 01/19/25 4:02 am
Separate filter caps for PI and preamp?

Last post by Bieworm « Wed 01/15/25 12:45 pm
Replies: 4
by Cartman » Sat 01/11/25 9:57 pm

4 Replies

222 Views

Last post by Bieworm
Wed 01/15/25 12:45 pm
Superlite TMB chassis layout - will this fly?

Last post by Bieworm « Fri 12/06/24 4:43 am
Replies: 71
by gkwallace » Wed 10/30/24 2:38 pm
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3104 Views

Last post by Bieworm
Fri 12/06/24 4:43 am
Superlite done - Need help tone shaping

Last post by JMPGuitars « Sat 11/30/24 9:40 pm
Replies: 9
by gkwallace » Fri 11/29/24 5:43 pm

9 Replies

296 Views

Last post by JMPGuitars
Sat 11/30/24 9:40 pm
Distortion on Positive Cycle of Sine Wave

Last post by TriodeLuvr « Thu 11/21/24 6:43 am
Replies: 2
by Big Swifty » Wed 11/13/24 11:28 am

2 Replies

458 Views

Last post by TriodeLuvr
Thu 11/21/24 6:43 am
18 Watt TMB Modern Classic Build

Last post by JMPGuitars « Sun 11/17/24 3:30 pm
Replies: 3
by Big Swifty » Sat 11/16/24 4:47 pm

3 Replies

643 Views

Last post by JMPGuitars
Sun 11/17/24 3:30 pm
Ideal PT for SS-rectified 18w?

Last post by yello « Wed 11/06/24 3:08 pm
Replies: 3
by yello » Thu 10/17/24 3:42 pm

3 Replies

638 Views

Last post by yello
Wed 11/06/24 3:08 pm
JTM45 to 18watt head cab conundrum

Last post by TriodeLuvr « Sun 11/03/24 10:51 pm
Replies: 13
by gkwallace » Wed 10/23/24 12:20 pm

13 Replies

884 Views

Last post by TriodeLuvr
Sun 11/03/24 10:51 pm
1974x Dagnall Transformers compatibility with Mojotone Small Parts Kit

Last post by colossal « Sun 10/27/24 1:47 pm
Replies: 2
by izymandias » Thu 10/24/24 1:12 pm

2 Replies

477 Views

Last post by colossal
Sun 10/27/24 1:47 pm
Tube rectifier current limiting resistors?

Last post by Bieworm « Sat 10/26/24 5:46 am
Replies: 6
by fyzygy » Thu 10/24/24 7:15 pm

6 Replies

620 Views

Last post by Bieworm
Sat 10/26/24 5:46 am
PI hum

Last post by bradfinamore « Fri 10/25/24 9:10 am
Replies: 6
by NSky » Thu 09/05/24 7:00 pm

6 Replies

686 Views

Last post by bradfinamore
Fri 10/25/24 9:10 am
18 watt original merged with 18 modern classic

Last post by JMPGuitars « Wed 10/23/24 3:45 pm
Replies: 4
by petedub » Tue 10/22/24 9:12 am

4 Replies

601 Views

Last post by JMPGuitars
Wed 10/23/24 3:45 pm
6SJ7 Pentode 18 watt Lite...Formerly the ABSOLUTE Minimum

Last post by LeifH « Fri 10/18/24 2:28 pm
Replies: 462
by StarGeezers » Sat 08/23/08 5:54 pm
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Last post by LeifH
Fri 10/18/24 2:28 pm
Just finished..

Last post by divali « Fri 10/04/24 5:35 am
Replies: 7
by divali » Tue 06/16/20 4:04 am

7 Replies

2529 Views

Last post by divali
Fri 10/04/24 5:35 am
Mojotone build - intensity as volume

Last post by Hippie Joe « Fri 09/27/24 6:03 pm
Replies: 2
by Hippie Joe » Fri 08/23/24 2:54 pm

2 Replies

735 Views

Last post by Hippie Joe
Fri 09/27/24 6:03 pm
Clone 1974x to SLP ( RR ) plexi

Last post by Bieworm « Wed 09/25/24 1:52 pm
Replies: 9
by Plig88 » Sun 09/15/24 11:39 am

9 Replies

828 Views

Last post by Bieworm
Wed 09/25/24 1:52 pm
resistor legs not long enough to fit turret board

Last post by JMPGuitars « Sun 09/22/24 1:39 pm
Replies: 5
by petedub » Sat 09/21/24 7:13 pm

5 Replies

647 Views

Last post by JMPGuitars
Sun 09/22/24 1:39 pm
Problem with Tremolo 18w

Last post by JMPGuitars « Tue 09/17/24 8:44 am
Replies: 2
by mitchfloyd » Tue 09/17/24 5:44 am

2 Replies

505 Views

Last post by JMPGuitars
Tue 09/17/24 8:44 am
Newby Mojotone 18 Watt Build

Last post by Daviedawg « Sun 09/15/24 2:31 am
Replies: 9
by TXFlatSix » Fri 09/13/24 9:33 am

9 Replies

833 Views

Last post by Daviedawg
Sun 09/15/24 2:31 am
General Questions on a recent build.

Last post by jlzuzze « Sat 09/14/24 4:30 pm

by jlzuzze » Sat 09/14/24 4:30 pm

0 Replies

527 Views

Last post by jlzuzze
Sat 09/14/24 4:30 pm
18watt tmb circutry speaker

Last post by Bieworm « Thu 09/12/24 2:53 am
Replies: 1
by Allendaniels » Wed 09/11/24 9:35 pm

1 Replies

489 Views

Last post by Bieworm
Thu 09/12/24 2:53 am
Modulus Amps Marshbar

Last post by SpeedTrip « Thu 09/05/24 8:42 am
Replies: 24
by SpeedTrip » Sat 05/25/24 11:36 am
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3451 Views

Last post by SpeedTrip
Thu 09/05/24 8:42 am
Tmb circuitry

Last post by Bieworm « Wed 09/04/24 11:26 am
Replies: 1
by Allendaniels » Tue 09/03/24 5:34 pm

1 Replies

463 Views

Last post by Bieworm
Wed 09/04/24 11:26 am
How to reduce mid range?

Last post by Bieworm « Wed 09/04/24 11:23 am
Replies: 1
by NSky » Tue 09/03/24 3:29 pm

1 Replies

516 Views

Last post by Bieworm
Wed 09/04/24 11:23 am
High pitch oscillation on trem channel

Last post by JMPGuitars « Thu 08/15/24 8:39 am
Replies: 9
by kaheksa toista » Mon 08/12/24 8:02 am

9 Replies

1165 Views

Last post by JMPGuitars
Thu 08/15/24 8:39 am
18W EF86 XXL Recording Amp

Last post by JMPGuitars « Wed 08/14/24 9:43 am
Replies: 7
by JMPGuitars » Tue 08/06/24 7:13 pm

7 Replies

1186 Views

Last post by JMPGuitars
Wed 08/14/24 9:43 am
Question about JMPGuitars’ “Modern Grounding Schemes”

Last post by JMPGuitars « Sun 08/11/24 6:02 pm
Replies: 1
by jimoreilly » Sun 08/11/24 4:23 pm

1 Replies

738 Views

Last post by JMPGuitars
Sun 08/11/24 6:02 pm
18 Watt TMB Superlite output sags into silence

Last post by ian@belsonique.com « Sun 07/28/24 4:53 pm
Replies: 17
by ian@belsonique.com » Mon 07/15/24 12:18 am

17 Replies

1601 Views

Last post by ian@belsonique.com
Sun 07/28/24 4:53 pm
AC heaters done right….how to get it done

Last post by TriodeLuvr « Sun 07/28/24 2:43 pm
Replies: 17
by Doxie man » Sat 08/28/21 9:01 pm

17 Replies

8327 Views

Last post by TriodeLuvr
Sun 07/28/24 2:43 pm
PP design ideas @ 100mA HT current

Last post by JMPGuitars « Wed 07/24/24 10:27 am
Replies: 2
by fyzygy » Wed 07/24/24 12:24 am

2 Replies

793 Views

Last post by JMPGuitars
Wed 07/24/24 10:27 am
New build but no output

Last post by Daviedawg « Sat 07/20/24 2:15 am
Replies: 17
by armandodiaz » Sat 07/13/24 11:32 pm

17 Replies

1416 Views

Last post by Daviedawg
Sat 07/20/24 2:15 am
Bias question for push pull El84

Last post by Davidscott « Mon 07/15/24 6:47 pm
Replies: 2
by Davidscott » Mon 07/15/24 2:36 pm

2 Replies

915 Views

Last post by Davidscott
Mon 07/15/24 6:47 pm
Why do people design outside of specs of EL84?

Last post by Davidscott « Mon 07/15/24 1:41 pm
Replies: 5
by Davidscott » Fri 07/12/24 3:20 pm

5 Replies

1035 Views

Last post by Davidscott
Mon 07/15/24 1:41 pm
Newbie Confusion

Last post by gabasa « Tue 07/09/24 7:53 pm
Replies: 2
by gabasa » Tue 07/09/24 12:50 am

2 Replies

833 Views

Last post by gabasa
Tue 07/09/24 7:53 pm
Mojotone 18W chassis for combo build - tube orientation

Last post by Bieworm « Sat 06/29/24 4:05 pm
Replies: 3
by jimoreilly » Tue 06/25/24 12:35 pm

3 Replies

861 Views

Last post by Bieworm
Sat 06/29/24 4:05 pm
TT-JC18 Add gain stage ?

Last post by Tomten « Wed 06/26/24 11:06 am
Replies: 16
by Tomten » Wed 06/19/24 12:38 pm

16 Replies

1556 Views

Last post by Tomten
Wed 06/26/24 11:06 am
Lite 2b(ish) from scratch !

Last post by GodoFre « Tue 06/18/24 2:50 am
Replies: 5
by GodoFre » Thu 04/25/24 1:25 am

5 Replies

1237 Views

Last post by GodoFre
Tue 06/18/24 2:50 am
18W tube amp build success

Last post by Daviedawg « Thu 06/13/24 2:49 am
Replies: 3
by anatolewilson » Wed 06/12/24 5:30 am

3 Replies

864 Views

Last post by Daviedawg
Thu 06/13/24 2:49 am
Could anyone confirm if I'm on the right track?

Last post by AussieTim « Tue 06/04/24 9:35 pm
Replies: 2
by DoraFitch » Tue 06/04/24 3:37 am

2 Replies

774 Views

Last post by AussieTim
Tue 06/04/24 9:35 pm
18 Watt Lite Test Readings?

Last post by JMPGuitars « Thu 05/30/24 9:45 am
Replies: 80
by tatter75 » Wed 04/17/24 10:21 am
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11394 Views

Last post by JMPGuitars
Thu 05/30/24 9:45 am
New 18W build started - seeking feedback on WIP

Last post by Bieworm « Wed 05/29/24 11:57 am
Replies: 17
by jimoreilly » Sat 05/18/24 1:58 pm

17 Replies

2449 Views

Last post by Bieworm
Wed 05/29/24 11:57 am

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