That's Not 18 Watts

Donations

Welcome

Moderators: JMPGuitars, Graydon, CurtissRobin, colossal, zaphod_phil, Daviedawg

New Topic

140 topics

Announcements

Replies

Views

Last post

Donations to 18watt.com

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

0 Replies

67211 Views

Last post by Graydon
Tue 07/23/24 5:50 pm

Topics

Replies

Views

Last post

Output Transformer Substitution

Last post by bobtait « Thu 06/26/25 4:46 pm
Replies: 6
by bobtait » Sun 06/22/25 1:24 pm

6 Replies

322 Views

Last post by bobtait
Thu 06/26/25 4:46 pm
New build_7591 option

Last post by Sparkout-67 « Thu 06/26/25 1:54 am
Replies: 4
by Sparkout-67 » Wed 06/18/25 6:26 pm

4 Replies

110 Views

Last post by Sparkout-67
Thu 06/26/25 1:54 am
PT markings - .07A total or per side?

Last post by yello « Wed 04/09/25 3:43 pm

by yello » Wed 04/09/25 3:43 pm

0 Replies

13138 Views

Last post by yello
Wed 04/09/25 3:43 pm
Ceriatone 2204

Last post by JMPGuitars « Wed 04/02/25 9:21 pm
Replies: 1
by cristianoepm » Wed 04/02/25 8:41 pm

1 Replies

1809 Views

Last post by JMPGuitars
Wed 04/02/25 9:21 pm
Adjustable cathode bias with balance pot? (6550 amp schematic question) - now with voltage chart

Last post by JMPGuitars « Sun 03/16/25 7:16 pm
Replies: 9
by yello » Tue 03/11/25 2:13 pm

9 Replies

23724 Views

Last post by JMPGuitars
Sun 03/16/25 7:16 pm
Marshall low watt "Plexi" modifications

Last post by Crabman « Thu 02/20/25 9:48 am
Replies: 8
by Phrak9 » Sat 02/08/25 1:31 pm

8 Replies

8775 Views

Last post by Crabman
Thu 02/20/25 9:48 am
Next build, suggestions with a CF stage?

Last post by Crabman « Thu 02/13/25 8:36 am
Replies: 1
by juanchankane » Sat 02/08/25 9:33 am

1 Replies

7127 Views

Last post by Crabman
Thu 02/13/25 8:36 am
handwired Marshall SV20H

Last post by Bieworm « Sat 01/04/25 7:17 pm
Replies: 1
by Jeffc1966 » Fri 01/03/25 4:17 pm

1 Replies

7402 Views

Last post by Bieworm
Sat 01/04/25 7:17 pm
Mini 18 Watt in a Vibro-Champ Form factor

Last post by JMPGuitars « Thu 11/28/24 1:50 pm
Replies: 11
by Big Swifty » Sat 11/16/24 4:58 pm

11 Replies

10209 Views

Last post by JMPGuitars
Thu 11/28/24 1:50 pm
Mini 18 Watt inspired Amp - Seeking comments

Last post by jayrodge « Mon 11/25/24 3:45 pm

by jayrodge » Mon 11/25/24 3:45 pm

0 Replies

6734 Views

Last post by jayrodge
Mon 11/25/24 3:45 pm
How to upcycle a 210-0-210v power transformer

Last post by Daviedawg « Thu 10/31/24 3:39 am
Replies: 3
by fyzygy » Mon 10/28/24 10:40 pm

3 Replies

7680 Views

Last post by Daviedawg
Thu 10/31/24 3:39 am
SUHR HOMBRE VS RIFT BROWNFACE

Last post by Bieworm « Wed 10/09/24 2:59 pm
Replies: 1
by Twangman » Mon 10/07/24 2:12 am

1 Replies

7316 Views

Last post by Bieworm
Wed 10/09/24 2:59 pm
Military projector amp - last edited 9/26/22 - layout help needed

Last post by JMPGuitars « Wed 10/02/24 1:41 pm
Replies: 231
by yello » Wed 02/02/22 3:35 pm
1

…

8

9

10

11

12
231 Replies

1611294 Views

Last post by JMPGuitars
Wed 10/02/24 1:41 pm
The Jimmy Page Sundragon (Supro) Amp- Help!

Last post by SpeedTrip « Mon 09/23/24 2:17 pm
Replies: 33
by ellis2699 » Mon 01/13/20 4:01 am
1

2
33 Replies

55279 Views

Last post by SpeedTrip
Mon 09/23/24 2:17 pm
How does this schematic look to you (Harmony 430 content)

Last post by prairie « Tue 09/10/24 2:20 pm

by prairie » Tue 09/10/24 2:20 pm

0 Replies

7348 Views

Last post by prairie
Tue 09/10/24 2:20 pm
Goliath amp build

Last post by Bieworm « Mon 07/08/24 3:19 pm
Replies: 14
by Bieworm » Wed 06/05/24 3:10 am

14 Replies

12140 Views

Last post by Bieworm
Mon 07/08/24 3:19 pm
Zener diode B+ dropping question - allowable distance from voltage source?

Last post by JMPGuitars « Sat 03/30/24 8:43 pm
Replies: 9
by yello » Wed 03/27/24 3:25 pm

9 Replies

12176 Views

Last post by JMPGuitars
Sat 03/30/24 8:43 pm
dual channel amp build

Last post by JMPGuitars « Sun 02/11/24 4:20 pm
Replies: 12
by Bieworm » Tue 01/23/24 8:18 am

12 Replies

13445 Views

Last post by JMPGuitars
Sun 02/11/24 4:20 pm
Build idea for 269JX Hammond PT

Last post by mehfuzhoss « Tue 01/30/24 9:06 pm
Replies: 2
by mehfuzhoss » Mon 01/22/24 1:36 am

2 Replies

9625 Views

Last post by mehfuzhoss
Tue 01/30/24 9:06 pm
Output Transformer Question

Last post by Bieworm « Tue 01/02/24 9:39 am
Replies: 1
by sledder » Tue 01/02/24 6:53 am

1 Replies

9884 Views

Last post by Bieworm
Tue 01/02/24 9:39 am
Dumble clone (Ceritone) OTS50

Last post by dbharris « Sat 12/30/23 9:47 am
Replies: 39
by foreverstrung » Mon 10/09/23 8:48 pm
1

2
39 Replies

74087 Views

Last post by dbharris
Sat 12/30/23 9:47 am
2061x from the top

Last post by Pressed_Rat « Wed 12/06/23 6:02 am
Replies: 6
by srbenefield » Wed 12/27/17 11:31 pm

6 Replies

21711 Views

Last post by Pressed_Rat
Wed 12/06/23 6:02 am
1W JTM build

Last post by edsonmarquezani « Tue 11/21/23 5:35 pm
Replies: 90
by Bieworm » Sun 05/30/21 10:15 am
1

2

3

4

5
90 Replies

173855 Views

Last post by edsonmarquezani
Tue 11/21/23 5:35 pm
Tweed bassman with 18watt components

Last post by Bieworm « Sun 10/29/23 3:38 am

by Bieworm » Sun 10/29/23 3:38 am

0 Replies

11106 Views

Last post by Bieworm
Sun 10/29/23 3:38 am
Adding reverb into design... need advise

Last post by Bieworm « Mon 10/09/23 2:28 pm
Replies: 12
by Davidscott » Wed 10/04/23 4:14 pm

12 Replies

20253 Views

Last post by Bieworm
Mon 10/09/23 2:28 pm
6G3 build

Last post by Bieworm « Sat 09/23/23 11:13 am
Replies: 5
by Bieworm » Sun 09/12/21 3:16 pm

5 Replies

14112 Views

Last post by Bieworm
Sat 09/23/23 11:13 am
Is twisting AC wires necessary

Last post by JMPGuitars « Wed 09/06/23 10:15 am
Replies: 12
by mac dillard » Tue 08/22/23 11:03 am

12 Replies

16446 Views

Last post by JMPGuitars
Wed 09/06/23 10:15 am
Organ conversion

Last post by Bieworm « Sat 08/26/23 2:24 pm
Replies: 9
by Mabus41 » Thu 08/24/23 4:06 pm

9 Replies

14052 Views

Last post by Bieworm
Sat 08/26/23 2:24 pm
Princeton Reverb clone advice

Last post by JMPGuitars « Tue 08/15/23 6:10 pm
Replies: 87
by foreverstrung » Wed 06/21/23 12:08 pm
1

2

3

4

5
87 Replies

76947 Views

Last post by JMPGuitars
Tue 08/15/23 6:10 pm
5E3 spitting at me !

Last post by misterdontmove « Sat 08/12/23 10:43 am
Replies: 2
by Hebaton » Thu 08/10/23 5:24 am

2 Replies

11143 Views

Last post by misterdontmove
Sat 08/12/23 10:43 am
18W Turbochamp

Last post by crgfrench « Thu 08/10/23 8:57 pm
Replies: 9
by crgfrench » Tue 09/27/22 12:38 am

9 Replies

15197 Views

Last post by crgfrench
Thu 08/10/23 8:57 pm
50 watt Plexi build troubleshooting

Last post by Kegger87 « Thu 08/10/23 12:19 am
Replies: 11
by Kegger87 » Sun 07/30/23 12:00 am

11 Replies

14937 Views

Last post by Kegger87
Thu 08/10/23 12:19 am
18 watt JTM45 quesstion

Last post by JMPGuitars « Thu 08/03/23 4:20 pm
Replies: 9
by mac dillard » Wed 07/19/23 12:13 pm

9 Replies

14372 Views

Last post by JMPGuitars
Thu 08/03/23 4:20 pm
Negative Plate Voltage on one 6v6?

Last post by yello « Tue 05/30/23 1:53 pm
Replies: 3
by yello » Fri 05/26/23 11:49 am

3 Replies

12337 Views

Last post by yello
Tue 05/30/23 1:53 pm
Help with SE 6V6 bias/cathode resistor/cap values....

Last post by Daviedawg « Tue 05/02/23 2:02 pm
Replies: 4
by MinglisFTW1967 » Sun 04/30/23 7:33 pm

4 Replies

12718 Views

Last post by Daviedawg
Tue 05/02/23 2:02 pm
SE KT66

Last post by redclayrebel « Tue 04/18/23 2:23 pm
Replies: 9
by redclayrebel » Mon 04/17/23 9:54 am

9 Replies

14751 Views

Last post by redclayrebel
Tue 04/18/23 2:23 pm
Tremolo TMB SE build!!!

Last post by garakin « Sun 04/02/23 11:46 am
Replies: 36
by Bieworm » Wed 02/15/23 2:44 pm
1

2
36 Replies

33474 Views

Last post by garakin
Sun 04/02/23 11:46 am
Best Tube Position

Last post by KagliostroAmpwww « Sat 04/01/23 4:49 pm
Replies: 6
by riley0 » Fri 03/17/23 11:44 am

6 Replies

13207 Views

Last post by KagliostroAmpwww
Sat 04/01/23 4:49 pm
Weber Halle find

Last post by Bieworm « Wed 03/15/23 8:36 am
Replies: 1
by cstenger5 » Wed 03/15/23 8:16 am

1 Replies

11605 Views

Last post by Bieworm
Wed 03/15/23 8:36 am
6g2 blocking distortion/fuzz at full vol

Last post by audiosalvage « Fri 03/10/23 11:37 am
Replies: 5
by audiosalvage » Sat 03/04/23 8:22 pm

5 Replies

13894 Views

Last post by audiosalvage
Fri 03/10/23 11:37 am
Volume drops

Last post by Hiwatt5 « Wed 03/08/23 4:51 pm
Replies: 2
by Hiwatt5 » Tue 03/07/23 11:14 am

2 Replies

11941 Views

Last post by Hiwatt5
Wed 03/08/23 4:51 pm
What causes excessive power tube cathode voltage?

Last post by yello « Mon 03/06/23 10:41 am
Replies: 15
by yello » Sat 02/11/23 9:08 pm

15 Replies

21788 Views

Last post by yello
Mon 03/06/23 10:41 am
Sudden increase in B+ voltage

Last post by Bieworm « Tue 02/28/23 5:06 am
Replies: 25
by riley0 » Mon 02/20/23 3:33 pm
1

2
25 Replies

26269 Views

Last post by Bieworm
Tue 02/28/23 5:06 am
Tremolo TMB Reverb with 6AQ5 tubes

Last post by Bieworm « Wed 02/22/23 3:50 am
Replies: 8
by Bieworm » Mon 02/20/23 4:41 am

8 Replies

14578 Views

Last post by Bieworm
Wed 02/22/23 3:50 am
Volume/Tone pot interaction affecting voltage & creating noise

Last post by yello « Sat 02/11/23 8:45 pm
Replies: 25
by yello » Wed 01/25/23 6:22 pm
1

2
25 Replies

27297 Views

Last post by yello
Sat 02/11/23 8:45 pm
Dual JTM45/2203 w/reverb and FX build

Last post by roadshow « Fri 12/23/22 12:18 pm

by roadshow » Fri 12/23/22 12:18 pm

0 Replies

10833 Views

Last post by roadshow
Fri 12/23/22 12:18 pm
Hum when volume turned up

Last post by Eric « Wed 12/14/22 7:30 pm
Replies: 2
by Eric » Wed 12/14/22 12:46 pm

2 Replies

11421 Views

Last post by Eric
Wed 12/14/22 7:30 pm
octal & el84 phonograph amp conversion

Last post by yello « Mon 09/12/22 11:42 am
Replies: 3
by yello » Mon 08/15/22 10:35 am

3 Replies

13238 Views

Last post by yello
Mon 09/12/22 11:42 am
JTM45 split cathode switch

Last post by Bieworm « Sat 08/27/22 3:40 am
Replies: 2
by Hebaton » Thu 08/25/22 1:54 pm

2 Replies

11616 Views

Last post by Bieworm
Sat 08/27/22 3:40 am
Van Halen Tribute Amp

Last post by crgfrench « Fri 08/19/22 5:33 pm
Replies: 46
by crgfrench » Sat 11/14/20 12:43 am
1

2

3
46 Replies

60725 Views

Last post by crgfrench
Fri 08/19/22 5:33 pm

New Topic

140 topics

Return to Board Index

Forum permissions

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Donations

Links

Welcome

That's Not 18 Watts

Forum permissions