[Put Waveblaster daughter board (Yamaha DB50XG) in a box?]

Look, here's another similar project: http://www.joebrown.org.uk/wp/?p=3124

[Put Waveblaster daughter board (Yamaha DB50XG) in a box?]

Mike

Thanks for the explanation! I've already ordered 6N138, now waiting for it. And, another question - R3 and R4, 220 Ohm both, why not to use just one, e.g. 440 Ohm?

BTW, what current does MIDI current loop use, 20 mA or 10 mA?

reboot

good job! Sounds nice.

[Put Waveblaster daughter board (Yamaha DB50XG) in a box?]

That's my scheme. It's without usb connection because i use a usb-midi (2.0) cable avcailable on web for 10€

The pins 12 and 16 are used only for 60xg that have line input, so you don't connect (for that I've done a little aggiuntive board connect to SV5 for supply and to SV4 for Input line)

SV3 is a connector to a potentiometer for volume control

At last increase R8 and R9 at 10K to have minor ampli if you want. (for me it's good like scheme but depends from daughter board, with Roland board was too low volume)

I hope is useful for you, good work

Mike

Hello, Mike! a small question regarding your schema: what is the purpose of R5 and C17?