Tube Power Amps on "How Its Made "

[laatsch55]

Tube power amps here in a few minutes on How its Made...

 

[laatsch55]

They were building Mac 275's...

 

[eminence1963]

Link to the video?

 

[laatsch55]

Don't know, watched it on TV...

 

[Gepetto]

Don't know, watched it on TV...

Was it worth the watch Lee?

 

[laatsch55]

Yes it was, let's just say there's some gravy in a Mac, and I finally got to see how transformers were made...

 

[Gepetto]

Yes it was, let's just say there's some gravy in a Mac, and I finally got to see how transformers were made...

I get the pleasure of touring several transformer factories Lee...not a glamorous industry.

 

[laatsch55]

I couldn't get how the laminations were integrated, now I do...

 

[Lazarus Short]

I couldn't get how the laminations were integrated, now I do...

Same technology as a Master lock?

 

[laatsch55]

Don't know Laz, haven't seen a master lock made...

 

[jbeckva]

I looked for it to repeat in DTV's guide to record, but dang.. I couldn't find it.

Good ole youtube... watching it now!

<iframe src="//www.youtube.com/embed/2HgS6gvokEI?feature=player_detailpage" allowfullscreen="" frameborder="0" height="360" width="640"></iframe>

 

[laatsch55]

That's the one!1

 

[premiumplus]

Very cool video. One point I noticed in the assembly process was that the tube sockets are soldered into place on the PC board before the assembly is mounted into the chassis. If I were doing it I'd have bolted everything up and then soldered the sockets to eliminate stress on the solder joints when the sockets and the board are mounted. The way they do it, the solder joints get pulled or pushed after they're soldered. I like to make all my mechanical assembly first, then do the soldering...a minor point but one that can cause failure down the road.

 

[Gepetto]

Very cool video. One point I noticed in the assembly process was that the tube sockets are soldered into place on the PC board before the assembly is mounted into the chassis. If I were doing it I'd have bolted everything up and then soldered the sockets to eliminate stress on the solder joints when the sockets and the board are mounted. The way they do it, the solder joints get pulled or pushed after they're soldered. I like to make all my mechanical assembly first, then do the soldering...a minor point but one that can cause failure down the road.

Well remember, it is only a McIntosh

 

[Lazarus Short]

​Does McIntosh not cook its trannies in a vacuum like some other manufacturers? I know some of the French tube amp makers do that. Besides that, if the narrator is talking up tube amps, why is the tube amp sitting on top of a solid-state monoblock?

 

[Gepetto]

​Does McIntosh not cook its trannies in a vacuum like some other manufacturers? I know some of the French tube amp makers do that. Besides that, if the narrator is talking up tube amps, why is the tube amp sitting on top of a solid-state monoblock?

It is called vacuum impregnation and all laminate transformer manufacturers I am aware of do it for added insulation and anti-hum/buzz purposes.

Perhaps they skipped that step in the sake of time. Or perhaps they have found the tar serves that purpose well enough.

 

[Web Police]

I looked for it to repeat in DTV's guide to record, but dang.. I couldn't find it.

Good ole youtube... watching it now!

<iframe src="//www.youtube.com/embed/2HgS6gvokEI?feature=player_detailpage" allowfullscreen="" frameborder="0" height="360" width="640"></iframe>

Cool video. Would have thought they would handle the tubes with cotton gloves though. Maybe they wipe em down later on?

 

[marcok]

For my curiosity what do you mean as master clock ? And for what ?
Crystal oscillator , oven , rubidium , cesium or what else ? A/D converter , etc .
Ciao and thank you
Marco

 

[Web Police]

For my curiosity what do you mean as master clock ? And for what ?
Crystal oscillator , oven , rubidium , cesium or what else ? A/D converter , etc .
Ciao and thank you
Marco

I think he said Master Lock as in:

 

[marcok]

Ehm ! Now I have understood ! I was too involved in RF tests . Sorry .
Anyways Mac uses tar after lamination like 50 years ago at least .
Ciao
Marco