MB-SEQ V3 Gate/Clock output protection resistors?

MIDIbox SEQ
1

Hi,

I am about to put the SEQ V3 on a case. I am using an AOUT_NG and also enabled the Gates on J5.

Should I add protection resistors on the Gates outputs sockets to prevent short-circuits in case of accidentally connecting them to an analog output? I do not want to damage the PIC…

What about the DIN Sync Clock and Run outputs? I am also using one 3’5mm socket for each one.

I guess I’d be on the save side by adding the resistors, but couldn’t find a mention anywhere. Something like 470Ohm or 1K would be fine?

Thanks!

2

470 Ohm should be fine as a short circuit protection.

Please give feedback if this is compatible with your gear once you tested this.

Best Regards, Thorsten.

3

For now all is working great without the protection resistors.

Some of my analog gear needs more than +5V to get triggered and I have to use a comparator or some other way to boost the gates to near +10V. I guess I could add some transistors inside the SEQ, and get the +12V from the AOUT_NG PSU.

I’ll add those 470Ohm and I’ll post about any issues.

Thanks!

4

I have installed the 470 Ohm resistors in my upgraded V4 MB-SEQ. Everything seems to work as before, so no problems adding these protection resistors.

Didn’t try them on V3 but I guess it’ll be just the same.

Thanks again!