In Reply to: 150 or 180 ohms posted by gkargreen on November 26, 2014 at 08:21:44:
Don't forget that you can use two 330 Ohm 10 watt in parallel to make a 165 ohm 20 watter.Mouser Electronics has a selection of 330 ohm 10 watt.
That's the way Scott did it for a while and the parts list for the 299A calls out two 330 ohm 10 watt. R119-120 or R209-210 depending on the schematic and that's what's in my 299A.I don't know what your skill set is but having done a 299A myself with some basic knowledge, lots of thinking things out and consulting the Internet, it wasn't easy because things like having the B+ voltages be high or vary due to different current draw of the 7189's wasn't second nature to me and that threw me off for a while.
Like it isn't bad enough for the reasonably experienced to see high B+ due to the higher line voltages today compared to the schematic voltages that were taken at 117 volts in.
Edits: 11/26/14
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Follow Ups
- RE: 150 or 180 ohms - DaveV 10:56:26 11/26/14 (8)
- RE: 150 or 180 ohms - gkargreen 11:33:31 11/26/14 (7)
- RE: 150 or 180 ohms - DaveV 13:30:32 11/26/14 (6)
- RE: 150 or 180 ohms - gkargreen 16:30:31 11/26/14 (5)
- RE: 150 or 180 ohms - DaveV 18:04:40 11/26/14 (4)
- RE: 150 or 180 ohms - gkargreen 21:30:24 11/26/14 (3)
- RE: 150 or 180 ohms - DaveV 22:33:35 11/26/14 (2)
- RE: 150 or 180 ohms - gkargreen 08:27:08 11/27/14 (1)
- RE: 150 or 180 ohms - DaveV 09:32:43 11/27/14 (0)