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View Full Version : My latest amp build (Christmas '20)



duhvoodooman
March 4th, 2021, 01:29 PM
It's a BYOC 18-Watt "TMB" head, basically a circuit clone of the venerable 18W Marshall "1974X" model of the late '60s (the model # has nothing to do with the mfg. date). This is the third 18W TMB kit I've built, starting with a Trinity Amps kit (chronicled HERE (http://www.thefret.net/showthread.php/19772)) and, a couple of years later, the BYOC version when it first came out. Both amps were soon sold to fund other gear-related purchases. But this past fall, BYOC announced that they would be out of the amp kit business temporarily due to their transformer supplier going out of business (bummer!). They'll be back, but it takes a while to qualify a new source, and then update their detailed build instructions to reflect the new transformer configuration and wire colors.

Anyway, the announcement was made that, after their current stock was depleted, that would be it for a while. I had been thinking about how good those 18W heads had sounded, and had also recently sold some gear and had the funding available, so I decided to snag one of those remaining kits. Turned out that I made the decision in the nick of time, because I got the last one!

Rather than duplicating it here, I'll just direct you over to the build thread on the BYOC forum (link below) if you're interested in seeing how the amp came together. I decided to go with an eye-catching red tolex finish on the head cab, with white piping. After another forum member over at BYOC commented on who the amp reminded him of, I gave it the pun-ishing name of "Kap'n Kerrang-aroo". And it sounds as bold as it looks!

Here's the link: http://www.byocelectronics.com/board/viewtopic.php?f=9&t=59226

And here's a teaser photo:

http://duhvoodooman.com/miscimages/musical/TMB18/TMB18_front+back.jpg

piebaldpython
March 4th, 2021, 10:39 PM
Sweet looking Head. I like the coloring and white piping. We need clips........you know the drill! haha

Jipes
March 5th, 2021, 03:53 AM
Fabulous and gorgeous I love these Marshall Amps I had great memories of playing through one of them at a Jam Session with a Japanese strat and thought Oh my gosh it sounds killer

duhvoodooman
March 5th, 2021, 10:27 PM
We need clips........you know the drill! haha

Fortunately, Keith (Mr. BYOC) already has one posted on YouTube:


https://www.youtube.com/watch?v=UJTfvIXlxFM

Jipes
March 6th, 2021, 09:03 AM
Seems to sound really good ! probably heavy no ?

duhvoodooman
March 8th, 2021, 01:03 PM
Seems to sound really good ! probably heavy no ?

Not too bad, really. The fact that it's only driving 18 watts of power keeps the size of the transformers down, and other than the cabinet itself, those are the two heaviest components in the amp.

Jipes
March 8th, 2021, 02:50 PM
Cool ! Maybe one day

Robert
March 8th, 2021, 03:36 PM
Very cool!


Sent from my iPhone using Tapatalk

Bloozcat
April 2nd, 2021, 07:57 AM
You've really become quite good at this, haven't you DVM? :thumbsup
I can only imagine the pride you must feel when you complete a project like this...professional build quality for sure!

marnold
April 2nd, 2021, 12:59 PM
Playing at 10 on the non-master channel must be ear-splittingly loud! Sounds awesome, though. The effects loop in the channel switcher pedal is an interesting twist. I don't think I've ever seen that before.