• Please note that Audiokarma will be offline briefly for updates early on Monday morning, September 28th.

McIntosh MC275 MK VI Clone

Well the Williamson was expressly published. Not aware of Mac doing the same.
The 1969 edition of the "Audio Cyclopedia" has the circuit description and schematic for the Mc40, Mc275 and the C24, as well as for the Williamson amplifier in great detail. I'd bet Howard Tremaine did not steal the information and it was co-published by Howard W. Sams. The circuit was also described by Frank McIntosh in the December 1949 ssue of Audio Engineering. A patent attorney could weigh in here and prove me wrong but I think the patent has expired. The McIntosh logo and style are a trademark and that is an entirely different manner and possibly why some are less than happy.
 
Last edited:
I guess Ransom Olds shouldn't have dared to make a car since Henry Ford was already producing them?
Pedantic mode (on).
Web search that, the Olds engine works was running long before Ford built his experimental 1896 quadracycle, Olds had an experimental automobile 1896. 1885 Carl Benz motorwagon beat Ford/Olds by 11 years.
Olds intro'ed their first production model 1901, Ford 1903.
History can be messy, Ford endulged himself in promotional puffery.
:beerchug:
 
Last edited:
Pedantic mode (on).
Web search that, the Olds engine works was running long before Ford built his experimental 1896 quadracycle, Olds had an experimental automobile 1896. 1885 Carl Benz motorwagon beat Ford/Olds by 11 years.
Olds intro'ed their first production model 1901, Ford 1903.
History can be messy, Ford endulged himself in promotional puffery.
:beerchug:
Exactly!
In the history books Henry Ford gets the credit for inventing the automobile assembly line,not true.
Ransom Olds invented the automobile assembly line. Henry Ford took the idea and improved and innovated the idea.
 
The unity coupled OPTs are the most difficult part of making a McIntosh topology amp. With OPTs made to the standards, anyone can build a version of one. One of our members did just that with toroid wound unity coupled xformers as a 225 clone.
With the import rebranded visual knock-offs, time will tell on the quality, or lack of same.
 
Pedantic mode (on).
...
:beerchug:

well in that case Henry shouldn't have bothered. The point still stands, just because someone made a thing doesn't mean someone else can't also make a thing. Nobody seems to be up in arms about anyone making exact copies of Dynaco stuff even though the Dynaco company and the people who founded it are gone. Nobody cares that you can build an exact replica of a Shelby Cobra or a Porsche 356 or any number of other things. The fact that a copy exists doesn't make the original thing any less real.
 
well in that case Henry shouldn't have bothered. The point still stands, just because someone made a thing doesn't mean someone else can't also make a thing. Nobody seems to be up in arms about anyone making exact copies of Dynaco stuff even though the Dynaco company and the people who founded it are gone. Nobody cares that you can build an exact replica of a Shelby Cobra or a Porsche 356 or any number of other things. The fact that a copy exists doesn't make the original thing any less real.
There were many working on "horseless carriages" in that period, it was something "in the air" of practicality with many sub concepts coming together in the realm of possibilities. Ford was but one of many fascinated with the possibilities. IC motive power was one of three basic sources concidered that became dominant thru development and refinement with the technology then available.
The team that Ford assembled to develop and produce a standardised simple durable (1908 Model T) automobile was a major milestone to expanding the automobile age forward as a standards-setting base line.
 
Last edited:
Likewise, McIntosh set the standard for a reference standard low distortion global feedback amp with their concept with a different approach from the Williamson, then a series of developments toward a stable lower distortion global feedback amp.
 
Is there value in this amp beyond it's cosmetic resemblance to McIntosh? No harm in making another push pull amp, but when it's a commercial product that mainly profits from the resemblance to an existing *current* product but at a lower price, some might find that somewhat short of the most honorable way of making money. A one-off that isn't sold for profit is something rather different.

Porsche is not making the 356 and Shelby isn't making the Cobra. While those replicas have becomes established, I'm not sure "nobody cares/cared" is entirely accurate, either.
 
I've spent the last 15yrs of my life building two businesses from nothing. When someone takes work that you've done to profit from it without your permission, it's called theft.

But hey, that's apparently now a profession which many can turn a blind eye to because they don't see a problem with it.
 
Elon Musk is not into patents he said in a tour of his space place in Texas. He said it's not right to stifle the innovators coming up behind you that might go on to do great things.
 
Back
Top Bottom