Are metal film resistors the same as metal oxide?
No, use metal film in the audio path and metal oxide where handling more current is required. Stick with the plan.
910 ohm wirewounds
No, this will run your NOS 1626 tubes too hot. Keep the 1k 3watt values. You could use either wire wound or metal oxide here.
For other 1k resistors, I have 1.1k Also, Why 475k for the grid resistors? I have 470k
If you have metal or carbon film at 470k those will be fine in place of the 475k.
For the 1k resistors it's better to stick with metal film rather than metal oxide.
Dayton paper in oil caps
If they'll fit on the board then use those. Many audiophiles will use better grade coupling caps. The old Orange Drops are pretty much the domain of guitar amps these days.
PCBs in the future?
I don't think Shannon wants to do that. But Jim Whitmore made a board that's a dead ringer for the Get SET Go board and I bought one. I'm still working out how I want to build the amp for it. You could check and see if he has another one,
viewtopic.php?f=3&t=7050Here's what I found for the BOM:
Locations R19, R20 are for parallel resistors used on the Chubby Clem. The Darling Clem uses R17, R20 only, 1K @ 3 watt. For the Darling build either a MO or WW could be used. The Vishay/Sfernice was a very compact and robust wirewound, but this series has dissapeared on Mouser. These other Vishay wirewounds will also work and are close to the same size in order to fit on the board. You can check the specs against the discontinuted one to compare:
71-ALSR031K000FE12
594-AC03W1K000J, I've used the Draloric's before and they're fine.
R21 in the power supply is also a Vishay/Sfernice resistor that's discontinued. Again the Draloric series will be fine there, I used those on a Get SET Go.
594-AC03W100R0J
The 1 and 2 watt Xicon metal oxide resistors now have a minimum order. You can use the MO resistors by KOA Speer instead, just keep the same values and wattage ratings.
The Vishay/Dale metal film 1/2 watt resistors are in stock, use those.
C1,C2 obsolete from Sprague. Replaced by Cornell Dubilier:
598-715P22454MD3 copy of the old orange drop
5984-940C6P22K-F better quality cap
C3,C4 use 647-UVZ1E221MPD1TD this is in stock
C5,C6 100uF, 100V is out of stock, this is the cathode bypass cap for the output tubes. You can substitute with this one, 647-UVY2A101MPD1TD
C7, C10 and C11, C12 these are in stock
Also see these photos of a Clementine board, yours should look like this:
http://www.diytube.com/clementine/clementine1.jpghttp://www.diytube.com/clementine/clementine3.jpg