McMurdo Silver Schematic

[Dave]

Need help with schematics for the Masterpiece 6. There was an early/late version, mine the earlier with dual choke power supply. There may
Be other variations much like Scott.

[Dave]

They are two piece at least for the Masterpiece 6. I would need two 2 caps

[Norman S Braithwaite]

From the photo it looks like you need two tube shields plus the bases.  The tube shield bases on the set appear to have been truncated.

Norman

[Dave]

Also, I could use two (2) valve covers for this set. I know, needle in a haystack!

[Dave]

Thanks Norm, seems tedious but all's well that ends well

[Norman S Braithwaite]

They do not release from the top. They are held down by nuts and lockwashers under the chassis.
Norman

[Dave]

For those who've gone a round with a Masterpiece 6, how do the cans release from chassis top ? Copper like rivets appear to be used as retainers. I can't twist or pull in any manner.

[Dave]

Excellent, Gerry has also filled in a lot of blanks here.

[palegreenthumb]

The power supply still uses both chokes, but in the late version amp, choke L1 is mounted outboard on the speaker pedestal. Electrically, the schematic doesn't really change because of that difference, only the cabling changes.

The early version with 2 chokes on the amp uses a 5-pin connector to the speaker. The late version with 1 choke on the amp uses a 7-pin connector to the speaker; the extra 2 wires connect to L1.