MaCo Super 300 Amateur

[CollinsMan]

Hi - Been a while since I've been here as I've been out of the hobby for a while due to life... However, I've been pulled back in due to finding a very nice Super MaCo 300, chrome top, with four M2057s and one 8950. I've never seen one of these before. Is anyone familiar with them? I had a Super Brute 75 with one M2057 back in the early 80s, but that's the only "super" I've ever owned...

I plan on recapping the amp and using it with a re-crystaled Sonar FS 3023 on 29.010 AM. Lots of locals hang out up there, and I think it will be fun to run an old-time CB set!

Any information, stories, advice, manual or schematic links, etc. would be appreciated. Thanks!

73 - Red Beard/W2VMC

 

[CollinsMan]

Getting her all cleaned up. Here's one of the M2057s!

 

[Shadetree Mechanic]

Nice! I have a Sonar 2340 and a D104 with a Contex 1 driving 4 6lq6. Wouldn't trade it for the world.
Chris

 

[CollinsMan]

Hi Shadetree Mechanic,

Those Sonar 2340s are nice, and you are fortunate to have one!
There are a lot of the 23-channel versions around my neck of the woods, but I've never seen a 40 channel version like yours "in person." Your Contex 1 seems similar to my Super MaCo 300. I've even read where the M2057s can be replaced with 6LQ6s with a filament voltage adjustment. If mine ever go out, I'll probably do this mod. The M2057s are $190.00 each at the one place I could find them!

Nice to meet you!

 

[dozerman]

Thats the same set up as one of my 300's. Orange face 1x4. All 8950's. Im not as big a fan of these as i am my 2x5 maco 300's. Have 3 of those. The are all 6 volt tubes. Sharp looking rig though

 

[drgrant]

Reminds me of a MaCO I sold my friend out in WI.... I have to reconnect with him and find out if it still working, it was a 1 driving 3 8950, but the tech I had set it so the radio drove all four.... much much nicer.

 

[Mark Fetsch]

Maco 300 chrome top,like mine is supposed to have 5 M2057 tubes in there,but the 8950 will work it just will not do as much. The m2057 tube was a beefed up 8950 tube that Maco had GE redesign(that is the rare Maco 300,1x4). and i was told,never did it, you can run all 8950 tubes as well, slightly cheaper tube,(m2057 900vdc, 8950 800vdc) May not last as long either,depends on how you run the amp.

 

[CollinsMan]

Hi Mark,

Cool!

I've been sick since the first part of this year. However, I'll see if I can get back on my "Super Maco 300" project, soon!

 

[Parasito45]

hola, ¿qué tal un gran saludo, disculpa? Tengo un maco 750 que estoy a punto de tirar pero necesito el esquema temático de la bombilla 8950, por casualidad alguien lo tiene, lo único que no me gusta es aterrizar los cátodos y la guala ...

 

[tecnicoloco]

Checa este sitio : https://elektrotanya.com/maco_750_sch.pdf/download.html

Para que te respondan mas rapido en este sitio utiliza tu traductor de google de idioma espaniol a ingles y postea en ingles

Saludos