Classictone Project OT

[Structo]

Have any of you noticed this OT being offered by Magnetic Components?

The 100w Project Output transformer.

It is physically larger than the Fender Twin Reverb OT with a 2" lamination core.
The Twin OT is 1 5/8"
And the mounting feet are farther apart as well so it is not a bolt on part.
You will have to drill new feet holes and wire hole.
It is also taller at 4 3/4" with the Twin OT at 3 1/8"

The primary impedance is 2.2K and the Twin OT is 2.1K, so pretty close there.

My question is, what could be gained by replacing the Twin Reverb OT with this one which is physically much larger?

So here are the specifications, this is the Twin Reverb 100w OT at $68.38
http://www.classictone.net/40-18013.pdf

This is their "Project" OT at $110.98
http://www.classictone.net/40-18072.pdf

It also costs $42 more than the Twin OT.

It states it has a broader bandwidth, which can sometimes mean more fizz at higher volumes....

[John_P_WI]

Tom,

That OT was developed with MC at the request / specs of the Sloclone guys with a much wider bandwidth to achieve the clear, tight bass thump of the high gain amps they build.

John

[ToneMerc]

I had spec'd a similar although slightly thicker lam stack from Heyboer when I did my HV non-hrm build. IIRC, Heyboer can do up to a 3" lam stack in the twin OT style.

TM

[Structo]

Interesting.

The SLO was a dream amp for me years ago.
You really have to be on top of the game to pull one of those builds off.

What does having a thicker lam stack bring to the table tone wise?

[John_P_WI]

Interesting.

The SLO was a dream amp for me years ago.
You really have to be on top of the game to pull one of those builds off.

What does having a thicker lam stack bring to the table tone wise?

Tom with all of your builds you could easily pull off a SLO.

I am no transformer expert, but I would guess that the thicker lam holds up better to the flux fields avoiding core saturation, allowing higher bandwidth at higher power levels. Therefore, more clarity and full power at the lower frequencies resulting in the bottom thump.

John

[blinddog]

Is SLOClone Forum still working? The site looks funky (and not funkalicous) right now and my log in doesn't seem to work (maybe its my memory today)

I though Bob-I here built a SLO.

yep here's the search results. https://tubeamparchive.com/viewtopic.ph ... hlight=slo

I think that is how I learned about SLOClone Forum. Jed used to sell the etched boards.

Good Luck Tom

[Structo]

Yeah, when I was Googling stuff I saw the Slo Forum, it appears dead.

Unfortunately it looks like Bob took down his photos.

If I built one of those amps, I would have to put a plexi glass cover on it and hang it on a wall.

Man are those pretty.

[John_P_WI]

Yeah, when I was Googling stuff I saw the Slo Forum, it appears dead.

Tom, it is still very much alive. Although, there is less activity since some "outside" guys pirated a lot of the work and started selling cheap pcb's and kits.
Understandably so, a lot of the hardcore contributors are reluctant to offer up schemes, ideas and mods etc. Sounds familiar doesn't it?

http://www.slocloneforums.com/