Marwatt, anyone?

Forum to discuss amp circuits besides the 18 Watters and their ilk.

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

Post Reply
ViperDoc
Occasional poster
Occasional poster
Posts: 181
Joined: Mon 05/18/20 8:09 pm

Marwatt, anyone?

Post by ViperDoc »

Just doing some amp surfing and wondered if anyone's built the Marwatt 18-watt Hiwatt build on this site?
0 x

User avatar
zaphod_phil
Builder, Admin
Builder, Admin
Posts: 15105
Joined: Wed 03/19/03 2:00 am
Location: YYZ

Re: Marwatt, anyone?

Post by zaphod_phil »

Yes, but not in a long time, unfortunately. :(

For a less eardrum-bursting Hiwatt style amp build ,I would suggest Trinity'sTriwatt. Just note that the Triwatt has a completely Hiwatt DR type vibe, not Marshall 18W.
0 x
Nature abhors a clean tube amp

ViperDoc
Occasional poster
Occasional poster
Posts: 181
Joined: Mon 05/18/20 8:09 pm

Re: Marwatt, anyone?

Post by ViperDoc »

zaphod_phil wrote:
Wed 09/08/21 11:17 am
Yes, but not in a long time, unfortunately. :(

For a less eardrum-bursting Hiwatt style amp build ,I would suggest Trinity'sTriwatt. Just note that the Triwatt has a completely Hiwatt DR type vibe, not Marshall 18W.
Thanks for the recommendation. That looks like an up-to-50W build with those KT66. I was able to find a file dump site with a "V.1" schematic as well as a "V.5" chassis drill guide. Any knowledge of whether a V5 schematic is out there? Thanks, Phil.
0 x

ViperDoc
Occasional poster
Occasional poster
Posts: 181
Joined: Mon 05/18/20 8:09 pm

Re: Marwatt, anyone?

Post by ViperDoc »

Well, that's a kit purchased. Looks like fun.
0 x

User avatar
zaphod_phil
Builder, Admin
Builder, Admin
Posts: 15105
Joined: Wed 03/19/03 2:00 am
Location: YYZ

Re: Marwatt, anyone?

Post by zaphod_phil »

Fun indeed, but not recommended for novice builders! :)
I always go to Trinity's site for the latest docs - http://www.trinityamps.com/docs/TriwattSchematic.pdf

I've also used a KT66 build as a small bass amp :) Some people have been known to run EL34s in a Triwatt, with some tweaking of B+ and bias voltage. For regular guitar, I prefer the standard 20W 6V6 version. It still makes your ears ring! 8O
From here on, I guess we will need to move this thread to a different forum on the site
0 x
Nature abhors a clean tube amp

User avatar
JMPGuitars
Super Duper Admin
Super Duper Admin
Posts: 3063
Joined: Tue 09/18/12 8:00 pm
Location: South Central, MA
Contact:

Re: Marwatt, anyone?

Post by JMPGuitars »

zaphod_phil wrote:
Thu 09/09/21 5:45 pm
Fun indeed, but not recommended for novice builders! :)
I always go to Trinity's site for the latest docs - http://www.trinityamps.com/docs/TriwattSchematic.pdf
I see that's another one of your designs. ;)
0 x
'I installed a skylight in my apartment yesterday... The people who live above me are furious.' - Steven Wright

Modern Ground Schemes
Soldering Technique
B+ Voltage Reduction


Web Design: DolceVittoria.com
Guitars / Amps / Effects: JMPGuitars.com
(anti)Social: Facebook · Instagram
Items for Sale

User avatar
TriodeLuvr
Frequent poster
Frequent poster
Posts: 545
Joined: Tue 10/16/18 11:19 am

Re: Marwatt, anyone?

Post by TriodeLuvr »

Hey Josh, off topic but I'm building an amp using a very old power transformer with cloth leads. I've just discovered my thermal stripper can burn through the cloth and the inner PVC simultaneously. No more struggling to get a clean strip on cloth wire! hurray

Jack
2 x

User avatar
JMPGuitars
Super Duper Admin
Super Duper Admin
Posts: 3063
Joined: Tue 09/18/12 8:00 pm
Location: South Central, MA
Contact:

Re: Marwatt, anyone?

Post by JMPGuitars »

TriodeLuvr wrote:
Thu 09/09/21 7:44 pm
Hey Josh, off topic but I'm building an amp using a very old power transformer with cloth leads. I've just discovered my thermal stripper can burn through the cloth and the inner PVC simultaneously. No more struggling to get a clean strip on cloth wire! hurray

Jack
That's awesome! And it kinda makes sense. Some cloth wire needs the edges burnt to not fray.

Thanks,
Josh
1 x
'I installed a skylight in my apartment yesterday... The people who live above me are furious.' - Steven Wright

Modern Ground Schemes
Soldering Technique
B+ Voltage Reduction


Web Design: DolceVittoria.com
Guitars / Amps / Effects: JMPGuitars.com
(anti)Social: Facebook · Instagram
Items for Sale

Post Reply