prototype setup to test the amplifier before making the final one.
The prototype board is simple - made out of a Veroboard (160x100 mm), two PCB-mounted octal-sockets and a lot of soldering pins placed around the board. The two tube sockets are connected to 16 of the pins, eight around each socket. This makes it easy to build a prototype that are stable enough to test with.
|Close-up of the prototype board.|
|The 250V regulator. This is a light-weight (and cheap) alternative to a choke.|
|6SN7GT dual triode - the active part of the amplifier. Two of there tubes are used for each channel. This picture shows a chinese brand that I got when the amp was made - I will try to test other brands too to see what tubes are best. The small black thing at the right is a transistor in a TO-220 and is put there for size comparison.|
|Internal view - all is hardwired and free-mounted except for the regulators that are mouned at prototype boards.|
|Low voltage regulators for tube heaters. There are two of them at the same board - one for 5V to the rectifier and one 6.3V for the other tubes.|
If you build one yourself, send me a mail and tell me about your sucess - and a picture of the design would be nice. Also, improvements and alternations are welcome if yoy like to share them.
|Amplifier||Shows one channel|
|Power Supply||To be added...|