trinityamps.com

Power Transformer



Power is same size as the OT. HV 315-0-315 to 180mA for a little extra beef. 6.3 CT is at 3A


Partridge Design 8K Transformer



OT Specs:

The OT is really close to a Partridge on file that was torn down by Heyboer. It's built how the Partridge was set with the same interleave and hook up. It's a very involved winding with 4 primary sections and 3 secondary sections.
29 guage M-6 laminations that are the same size lams as original.
4-8-16 0hm outputs

Both transformers are the same size. In stand up, it will be tall way up 3 3/4" H X 3 1/8" W and 1 1/2" Plus the brackets, which are about 1/2" out on each side.
Same flying lead colours as our 18 watt OT.
Same flying lead colours as our 18 watt PT.


We also received a simpler version of the OT so we will build another TRIWATT and then compare the two for tone and decide which is best.

_________________
Stephen
Web: www.trinityamps.com. Facebook: facebook.com/trinityamps. Twitter: @trinityamps

Alrighty then! Just say when!!!!!!

_________________
Brent Bodrug
Producer-Engineer/Songwriter

www.slyfichapel.com

Will the Output Transformer allow for 4/8/16 Ohm speaker selection?

Thanks:

_________________
ROB

Yes, also updated the info above.

_________________
Stephen
Web: www.trinityamps.com. Facebook: facebook.com/trinityamps. Twitter: @trinityamps

TRIWATT is up and working with new iron installed in the same locations for production versions. The 4 pre-amp tubes will be moved 2 more inches to the far end, for better pre/power amp separation.

Transformers in Place - Front view




Transformers in Place - Top view




Transformers in Place - Rear view

_________________
Stephen
Web: www.trinityamps.com. Facebook: facebook.com/trinityamps. Twitter: @trinityamps

Wow, those are some big chunks of iron

Careful moving the pre's too far into that corner, those of us with big paws and right handed have a problem working in that corner

Waiting for the test reports

I second that! But on the 2 V6's I've built I've mounted one the tag strips for the inputs on the side of the chassis instead of in the corner. Makes it a little easier, but still tight quarters.

And you're right - that's some pretty hefty looking iron - especially the OT! I can't say I have a problem with that!

Yes they are a good size and weigh in at about 5.25 lb each, 10.5 lb per set! The 18 watt/15 watt are 7 lb per set.

We'll be careful with the layout. At this point I sure dont want to change too much.

_________________
Stephen
Web: www.trinityamps.com. Facebook: facebook.com/trinityamps. Twitter: @trinityamps

Looks great Stephen! How about a shot of the business section for us wiring guys

Joe G

_________________
Some assembly required,
Brain sold separately...

i am quite excited to build this.
really cool.

Any Sound info on these changes ??

Thank you for the upkeep of detailed info.

_________________
".....black sabbath....i...i don't even think there was anything before black sabbth...i...i..ummm"
- ozzy.

: )

This is the first prototype amp, and the wiring below deck is therefore a little rough, especially after various mods, changes, tweaks, experiments with different grounds, transformers, etc. Stephen has also made some changes to the board, based on what we learned from this prototype. Components are now placed in a more Hiwatt-like rectilinear fashion, and we've optimized their placement for tidier wiring, minimal wire lengths, etc. We're also now using turrets instead of eyelets, there are now two cap cans, and we've altered the position of the power tubes to improve their spacing, relative to the transformers. So there is a gut shot earlier in this thread, but you'll need to bear in mind that the finished product will look somewhat different.

Edit: It looks like Stephen just re-posted that gut shot.

The most immediate difference we found was improved range on the Presence control. I'll be testing the amp some more this week, but we'll really need to get some of the guys with golden ears involved for listening tests.

_________________
Great tones come in small glass jars!

Inside View - Looks something like this old pic!

Not military style but considering it works, is a protoype, required some wiring changes etc. - not bad.

Neds an update pic with the new iron. We'll save that for #2 perhaps.

_________________
Stephen
Web: www.trinityamps.com. Facebook: facebook.com/trinityamps. Twitter: @trinityamps

Looks great for a proto guys. Congratulations and thanks to all involved for sharing this whole process

What impact do you think a tube rectifier would have on the sound and feel of this amp? I'm sort of a "sag" fan.

Joe G

_________________
Some assembly required,
Brain sold separately...

IMO it would lose a big part of the Hiwatt vibe. I know where you're coming from though, as I'm a total Marshall 18W fan. But these amps are very different - solid state power supply with 100uF filter caps, fixed bias, hi-fi spec transformers, etc. They have their own kind of tough charm.

_________________
Great tones come in small glass jars!

I'm with Phil, I think it would compromise the amp. Hiwatt's are all about urgency - the sag would kill that. It ain't a Marshall, but fear not, it's plenty "tooby"... to me it's like a Marshall that's gone to the gym - a bit more testosterone and piss and vinegar...

My advice to anyone with a conceptual hang-up on this thing is... listen first... then decide whether it's a problem for you or not... More clips soon...

_________________
Brent Bodrug
Producer-Engineer/Songwriter

www.slyfichapel.com

Well,I've been playing the amp with the new transformers installed. It sounds GREAT with these big hefty transformers. I've been testing it with my vintage G12H-30 cab, and the tone is very clear and full, with all the chimey cleans and saturated overdrive you could ever want. There is a clarity and evenness in the highs now that I really like. Totally Hiwatt.

PS: I also posted this in the other (long) Triwatt thread, just for completeness

_________________
Great tones come in small glass jars!

swwwwwwweeeeeeeeeeeeeet.
that sounds like what i'm looking forward to hearing.

_________________
".....black sabbath....i...i don't even think there was anything before black sabbth...i...i..ummm"
- ozzy.

: )

Even though this version uses the less complex Partridge OT, it sounds so good that we want to take it into the bgroup music studio to do some extensive recording with it.

I don't really think Brent will have a problem with that. The problem may be wrestling it out of his clutches afterwards!

_________________
Stephen
Web: www.trinityamps.com. Facebook: facebook.com/trinityamps. Twitter: @trinityamps

Why do I forsee a "cold dead hands" quote from Brent some time soon?

I just can't wait to get my hands on one of these puppies!

LOL! Too funny guys... I'll definitely oblige with the "cold dead hands" comment once I have #2 in my clutches! #1 was never mine to start with so it wouldn't really be fair to expect that it should be mine... although I could definitely hold it ransom until #2 is completed!!!

Lots of clips to come... we're working on the day for the handoff and I've already got Rob brushing up on his classic rock repertoire...

_________________
Brent Bodrug
Producer-Engineer/Songwriter

www.slyfichapel.com