Masco ME-27 schematic

[shane]

Hi folks
Has anyone got a schematic for a Masco ME-27? Or maybe give some info about them, like for instance what phase inverter they used.
Cheers
Shane

[jabguit]

Masco_me-27-sch.pdf

[shane]

Thanks Jack

[sluckey]

The amp uses a paraphase inverter.

[shane]

Thanks Sluckey
Does anyone know the transformer specs for these amps, or where I might find out?

Cheers

[sluckey]

Are you building one, or repairing one, or just curious? Just what are your intentions?

[shane]

Thinking of building something closely based on one.
I saw Rhett Shull's YouTube post about his, the one modded by Eli Lester and one done by a guy over here in the UK, and thought they sounded great.
Cheers.

[LOUDthud]

Note that the schematic specifies the 6L6G. That's the earlier version with the 19W rated plate. Not the 30W rated 6L6GC. The RCA lists a 6000 Ohm OT in it's examples with similar Plate and Screen Voltages for a 31W output.

I don't believe the 11V reading on the cathodes. Should be more like 21V.

[shane]

Thanks Loudthud.
Yes that cathode voltage must be wrong, its even a wee bit low for EL84's never mind 6L6G.

Cheers