![]() a FAT32 formatted USB stick - might ruin file names (capitalization, special characters) copying via different file systems - e.g.Making zip or tar archives with inappropriate settings will strip many file attributes.Handling program bundles with inappropriate tools often will "damage" executable bundles. This is where I quit for the night.There are many possible causes for this problem, and most cannot be fixed using chmod. I still need to solder the wires for the output xformers and a few other things. You have to jumper the filaments of the output tubes as shown. There are no connecting traces, just extra pads to solder to. The output tubes have clearly labeled pads on the edge of the PC board. *Note that the output tubes and voltage amp tubes are on separate filament windings, also on the voltage amp tubes, you have to solder the filament leads on the PC board on a couple extra pads near the tube sockets. The input cable is shielded and the filament wires will go straight down against the chassis. I left plenty of wire so the board can be removed for service if needed without unsoldering. I will wait until the board is mounted and the sockets are level with the chassis before I solder. I did not solder the tube sockets at this point. I found it was best to install the spacers 1st on the PC, then insert the tube sockets. ![]() You have to kinda watch the pins on the tube sockets when inserting to the PC board, Seems like they kind of want to escape. ![]() The others in the circuit wont have as much voltage or ripple. You can see the size difference here on the 22uf 400 vs. I decided to follow Rons advice to some degree and am upgrading the main filter caps and screen caps with some I had from Mouser. Slow and easy takes you all the way here! Take care not to scratch the stainless chassis while assembling. Mark these carefully and drill pilot holes. These are actually solid wood and nicely finished. It's rated at 12w per channel, and can be had on the auction site for the neighborhood of $250, although I bought mine for less on sale. ![]() I'm taking notes as I always do, so if anyone wants to tackle one of these after I get finished, just fire me a PM and I'll send my notes. As in previous offerings, no instructions and need some mods, but so far hasn't been too bad. I think using the PC board will make things simpler. Since this kit uses a PC board, rewiring the socket to use a 6BQ5 or 6V6 isn't easy, so for now, I'll run what is supplied with the kit. My experience with the China tubes probably means a NOS set will find their way into the socket. Pinout on the 6F2 is identical to the 6GH8a, 6U8 and a couple others I think. The pinout is different so it's not a direct swap. They are really a 6P1 set, which is electrically similar to the 6BQ5/EL84 but suppose to be a kinda industrial version. It is the Douk kit using 6 tubes, basically a 6GH8a driver phase splitter and a pair of 6BQ5 outputs in push pull. It's not a Knight or Heath, but really isn't bad. What better way to hibernate on a snowy winter day than to spend the day in the radio room than to grab a tall cup of coffee, open the blind so I can watch it snow and break open a brand new kit! Oh, cant forget the really cool nostalgic music playing on a tube amp I built a few years ago! Ok, so I found a deal on this kit and pulled the trigger.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |